200931076 九、發明說明 【發明所屬之技術領域】 本發明乃有關波長變換器及使用此之發光裝置，詳細 乃有關將特定的入射光變換爲波長不同之複數種類的螢光 ’及將藉由其波長變換器而從激發光源所放出之激發光， 變換爲相互不同波長之複數種類的螢光而輸出的發光裝置 ❹ 【先前技術】 作爲進行以往典型之照明或顯示的發光裝置，知道有 藉由波長變換器，將由LED等之光源所生成的光，變換 爲對應於濾光片的種類之目視色而輸出之裝置（例如，參 照下記之專利文獻1)。往典型之波長變換器乃含有有機 螢光體之樹脂濾光片（以下，亦稱作「有機螢光濾光片」 )，當可激發有機螢光體之波長的光入射時，至少吸收一 ❹ 部分的入射光，放出對應於有機螢光體之種類的目視色的 光。 使用如以往典型之發光裝置的有機螢光濾光片等之波 長變換器的情況，有機螢光體的壽命乃較激發此之激發光 源，特別是實用性高之LED光源的壽命爲短。另外’來 自有機螢光濾光片的螢光之波長分布的分散爲大。近年， 知道有由半導體物質所成之濾光片或含有由半導體物質所 成之數微米程度粒徑之無機螢光粒子的樹脂濾光片（以下 ，總稱「無機螢光濾光片」），大大改善壽命的長度。但 -5- 200931076 ’在構成無機螢光粒子的物質之價帶及傳導帶之電子能量 位準係因退縮而可得到連續性的能量，而從此所射出的螢 光之波長分布的分散爲大。 專利文獻1 :日本特開平7 - 9 9 3 4 5號公報 【發明內容】 〔發明欲解決之課題〕 〇 以往的發光裝置，特別是進行照明或簡單的顯示之發 光裝置乃容易成爲模仿的對象，即使作爲於發光裝置搭載 識別製造商的資訊，就只設置在可辨識處，此等資訊仍被 模仿。作爲爲如此模仿的對策，考量有經由將爲了使特定 的目視色產生的顏色要素之組合，作爲特定複數色要素的 組合之時’識別發光裝置之製造商者，但如上述，因規定 各色要素之螢光的波長分布的分散爲大，而無法高精確度 地識別者。特別是，對於有機螢光濾光片之情況，因其色 〇 要素乃容易產生經年變化，而辨識則更爲困難。 因此，在本發明之波長變換器及發光裝置中，縮小來 自含有由半導體物質所成之無機螢光體的波長變換器之螢 光波長分布的分散，使經由色要素的識別資訊之識別精確 度提升。 〔爲解決課題之手段〕 爲了解決上述之課題，有關本發明之波長變換器係屬 於將入射光變換爲相互不同峰値波長之複數種類的光，射 -6- 200931076 出特定目視色的射出光之波長變換器’其特徵乃包含由半 導體物質所成，含有依據前述入射光的吸收’產生將較前 述入射光的最短波長爲長的波長作爲峰値波長之第1螢光 的複數個之第1量子點螢光體的第1螢光體群’和由半導 體物質所成，含有依據前述入射光的吸收’產生與較前述 入射光的最短波長爲長的第1螢光不同峰値波長的第2螢 光之複數個之第2量子點螢光體的第2螢光體群’和分散 φ 保持構成第1螢光體群及第2螢光體群的前述第1量子點 螢光體與前述第2量子點螢光體之分散保持體者。 另外，爲了解決上述之課題，有關本發明之發光裝置 乃屬於包含； 生成光的光生成部，和含有將來自前述光生成部的光 變換爲特定目視光的波長變換器之波長變換部’和固定前 述波長變換部與前述光生成部之相對性的配置之固定部的 發光裝置，其特徵乃前述波長變換器乃包含由半導體物質 0 所成，含有吸收來自前述光生成部的光，產生第1螢光的 複數個之第1量子點螢光體的第1螢光體群，和由半導體 物質所成，含有吸收來自前述光生成部的光’產生與第1 螢光不同峰値波長的第2螢光之複數個之第2量子點螢光 體的第2螢光體群，和分散保持構成前述第1螢光體群及 前述第2螢光體群的前述第1量子點螢光體與前述第2量 子點螢光體之分散保持體，來自前述光生成部的光之最短 波長乃較前述第1螢光的峰値波長爲短，且較前述第2螢 光的峰値波長爲短者。 200931076 另外，爲了解決上述之課題，有關本發明之發光裝置 乃屬於包含； 生成光的光生成部，和含有將來自前述光生成部的光 變換爲特定目視光的第1波長變換器之第1波長變換部， 和含有將來自前述光生成部的光變換爲特定目視光的第2 波長變換器之第2波長變換部，和固定前述第1波長變換 部及前述第2波長變換部與前述光生成部之相對性的配置 0 之固定部的發光裝置，其特徵乃前述第1波長變換部乃包 含由半導體物質所成，含有依據來自前述光生成部的光而 產生前述第1螢光的複數個之第1量子點螢光體的第1螢 光體群，和由半導體物質所成，含有依據來自前述光生成 部的光而產生與第1螢光不同峰値波長的第2螢光之複數 個之第2量子點螢光體的第2螢光體群，和分散保持構成 前述第1螢光體群及前述第2螢光體群的前述第1量子點 螢光體與前述第2量子點螢光體之分散保持體，前述第2 φ 波長變換部乃包含由半導體物質所成，依據來自前述光生 成部的光而產生第3螢光的第3量子點螢光體的螢光體群 ，和分散保持構成前述第3量子點螢光體的螢光體群之前 述第3量子點螢光體之分散保持體，來自前述光生成部的 光之最短波長乃較前述第1螢光，前述第2螢光及前述第 3螢光之中峰値波長最短之螢光峰値波長爲短者。 〔發明之效果〕 如爲有關本發明之波長變換器，因特定之目視色乃成 -8- 200931076 爲不同峰値波長之第1螢光及第2螢光的 對於第1螢光及第2螢光之至少一方的至 資訊，使識別資訊作爲存在內部者。另外 子點螢光體產生的峰直播長螢光之波長分 爲較從體螢光體產生的螢光之情況爲小， 於波長變換器之識別資訊作爲多樣化’使 提升者。 0 如爲有關本發明之波長變換器，因經 明之波長變換器，以不同峰値波長之第1 的組合而發光爲特定之目視色，而可經由 螢光波長的資訊，埋入識別資訊者。另外 裝置之識別資訊的精確度提升者更加地， 目視色，但對於藉由第1波長變換部器之 波長變換部器之發光的波長分布爲不同之 由將第1波長變換部與第2波長變換部之 〇 定的圖形或文字地加以配置之時，可將發 訊，作爲發光裝置全體而加以內部存在者 由強調藉由第1波長變換部器之發光與藉 部器之發光的差異之濾光片，觀察來自發 因顯現出圖形或記號，而可更簡便地識別 體之識別資訊。 【實施方式】 對於有關本發明之波長變換器及發光 組合，而可經由 少關連於波長的 ，對應於從各量 布的分散係因成 而可將內部存在 識別此的精確度 由使用有關本發 螢光及第2螢光 至少關連於此等 ，可使識別發光 發光色乃特定之 發光與藉由第2 構成的情況，經 一方，呈表現特 光裝置之識別資 。此情況，如藉 由第2波長變換 光裝置的發光， 作爲發光裝置全 裝置之最佳型態 -9- 200931076 ，加以說明。以下，在對於本發明之槪念的構成加以說明 之後，對於具體之構成，參照圖面同時加以說明。 有關本發明之波長變換器乃將入射光變換爲相互不同 峰値波長之複數種類的光，射出特定之目視色的射出光， 具備含有複數個之第1量子點螢光體的第1螢光體群，和 複數個之第2量子點螢光體的第2螢光體群，和分散保持 構成此等螢光群之量子點螢光體的分散保持體。在此，「 0 目視色」係指經由人眼所辨識的顏色，具體而言，對於射 出光的波長分布（光譜），依據以網膜的相對可視度加權 之波長分布所決定的顏色。更詳細而言，目視色係意味由 色度所辨識的顏色。然而，無法由人眼的解析度所分離之 些微不同的顏色，也就是，在色度圖上，由一點（任意的 色度）之周圍狹窄範圍內的各色度所顯示的顏色乃作爲同 一目視色。例如，對於只有些微峰値波長不同之2個的光 而言，目視色乃同一色，另外，即使1或複數的光的峰値 φ 波長及強度的組合爲不同之情況，此等不同的組合乃對於 特定的組合之情況，目視色亦成爲同一色。另外，「螢光 體群」係指複數個之量子點螢光體的總稱，構成此之複數 個之量子點螢光體係實質上爲同一。然而，複數個之量子 點螢光體乃實質上爲同一係指，預計由材質，形狀相同所 製作者，此等並非嚴格限定爲相同，而同意經由製作誤差 ，嚴格來說並非相同之情況。另外，「量子點螢光體」係 指由半導體物質所成，發現量子尺寸效果之粒徑極小的超 微粒子。量子點螢光體的尺寸係經由粒徑而作指標，量子 -10- 200931076 點螢光體並非指完全球體者，亦可爲大槪爲球體情況或大 槪爲立方體情況或其他的形狀情況。例如，對於量子點螢 光體的粒徑爲6nm的情況，係指對於量子點螢光體之外接 球面的最小直徑爲6nm者。另外，對於粒徑係作爲亦可含 有製作誤差（5者。隨之，構成量子點螢光體之螢光體群的 各量子點螢光體之粒徑係指（6± (5 ) nm之範圍內者。 作爲波長變換器，係可舉出經由樹脂成形等所形成之 0 平板狀的構成，經由印刷而形成固定於基體上之膜狀的構 成，經由裝塡而形成於基體上之立體形狀的構成，封入於 特定形狀的容器之構成。 第1量子點螢光體及第2量子點螢光體乃由半導體物 質所構成。構成第1量子點螢光體之半導體物質與構成第 2量子點螢光體之半導體物質乃亦可爲相同，或亦可爲不 同。作爲構成第1量子點螢光體或第2量子點螢光體之半 導體物質，係例如可舉出CdS、CdTe、CdSe、 Ο ( Agin ) χΖη ( ux) S，針對在以下，對於螢光體之情況， 並無特別侷限，螢光體之構成物質係作爲半導體物質。 量子點螢光體係對應於入射光的吸收，可使較入射光 波長長之螢光產生者。具體而言，對應於較量子點螢光體 之帶隙能量爲高之能量的入射光之吸收，放出將相當於量 子點螢光體之帶隙能量的波長，作爲峰値波長之螢光（以 下，亦稱作「主螢光」）。在此，峰値波長係指從單一之 量子點螢光體，以最大轉變強度（頻繁度）所放出之螢光 的波長。但，量子點螢光體乃因爲爲發現量子尺寸效果之 -11 - 200931076 超微粒子，而對應於粒徑的變化，帶隙能量（傳導帶之電 子的最小能量位準與價帶之電子的最大能量位準之能量差 :禁帶寬度）乃產生變化，也就是，即使爲由同一半導體 物質所成之情況，如粒徑產生變化’所放出之螢光的波長 係亦變化。一般而言，粒徑越大程度，帶隙能量爲小’粒 徑越小程度，帶隙能量爲大。然而，對於對至少一方向而 言，未作爲量子化之螢光體，例如，未發現量子尺寸效果 0 的粒徑之體螢光體的情況，即使使尺寸變化，帶隙能量係 實質尙未有變化。另外，針對在量子點螢光體，價帶之電 子的能量位準及傳導帶之電子的能量位準係與體螢光體的 情況不同，爲了取得能量位準之退縮解除而分散的能量位 準，而對應於主螢光之波長分布的分散則變小。特別是， 量子點螢光體的粒徑之精確度越高，其效果則變越大。然 而，主螢光的強度係可經由螢光體群之實際效力的厚度（ 換算爲半導體結晶情況的厚度）之變化而作控制者。然而 〇 ，實際效力的厚度係對於將分散保持體的體積或重量作爲 一定之情況’亦可經由量子點螢光體的濃度而作指標者。 作爲製作高精細度地控制粒徑的量子點螢光體之技術 ’係例如可舉出尺寸選擇光蝕刻法。對於使用其尺寸選擇 光蝕刻法之情況’係可將從量子點螢光體所放出的螢光之 峰値波長，以數nm單位（1 nm以下的誤差）進行控制。 在此’對於尺寸選擇光蝕刻法，簡單地進行說明。尺寸選 擇光蝕刻法係指預先以公知的方法，製作量子點螢光體之 後，針對在溶氧環境下’於具有其製作之寬粒徑分布的量 -12- 200931076 子點螢光體群，照射特定之單色光。量子點螢光體係爲了 吸收本身之帶隙能量以上之寬度寬之波長頻帶的光’對於 其帶隙能量較對應於單色光之波長的能量微小之情況，係 作爲光激發。此時’由適當地控制容易條件者’可使作爲 光激發的量子點螢光體之其構成作爲光溶解者。經由其光 溶解，量子點螢光體的粒徑則減少，量子點螢光體的帶隙 能量則變大。其反應係在量子點螢光體之帶隙能量超過對 Q 應於照射光的波長之能量的時點停止。由此，可將構成量 子點螢光體群之量子點螢光體的粒徑，彙整爲依存於進行 照射之單色光的波長之特定粒徑者。 來自波長變換器的射出光係對於入射光包含對應於較 第1量子點螢光體之帶隙能量及第2量子點螢光體之帶隙 能量雙方爲高之能量的波長情況，係成爲包含至少對應於 各帶隙能量之第1螢光及第2螢光者。射出光的目視色乃 經由射出光之全體的波長分布所決定。然而，在以下，雖 〇 有從第1量子點螢光體及第2量子點螢光體，各自放出與 第1螢光及第2螢光不同的螢光情況，但對於此等成分係 因強度極弱，而不作爲考慮。作爲射出光的目視色係具體 而言，可舉出經由第1螢光及第2螢光的混合所決定之目 視色的情況，經由第1螢光，第2螢光及透過光（未被吸 收的熱光）的混合所決定之目視色的情況，經由第1螢而 實質上所決定之目視色的情況，經由第1螢光與透過光的 混色而實質上所決定之目視色的情況。在此，經由第1螢 光而實質上所決定之目視色的情況係指，並不限於第2螢 -13- 200931076 光並非可視光而對於射出光的目視色完全未帶來影響之情 況，而亦可爲第2螢光的強度比較於第1螢光的強度爲大 幅度小，對於目視色幾乎未帶來影響之情況者。然而’在 以下，將實質性地決定目視色的主螢光，亦稱作「目視色 要素光」，將對於目視色實質尙未帶來影響之主螢光’亦 稱作「代碼專用要素光」。 分散保持體係分散保持構成第1量子點螢光體之螢光 0 體群及第2量子點螢光體之螢光體群的第1量子點螢光體 與第2量子點螢光體。在此，分散保持係指，於特定的範 圍內，封閉複數之第1量子點營光體與複數之第2量子點 螢光體，在其特定的範圍內，混合分散有此等量子點螢光 體者。作爲分散保持量子點螢光體之情況，係例如可舉出 經由樹脂等之固體的分散媒體所成之分散保持體’固定性 地保持各量子點螢光體之情況，或經由含有密封容器與封 入於密封容器之液體的分散媒體之分散保持體，流動性地 φ 保持各量子點螢光體之情況。做爲構成分散保持體之樹脂 ，例如可舉出丙烯酸樹脂、聚碳酸酯樹脂、環氧樹脂等。 另外，作爲分散保持體之分散媒體，例如可舉出三氯甲烷 等之有機溶劑。 針對在本發明之波長變換器，如至少含有第1量子點 螢光體及第2量子點螢光體即可’更加地亦可含有與第1 螢光及第2螢光雙方不同’且放出相互不同之營光的至少 1種類的量子點螢光體。此情況’來自第1量子點螢光體 及第2量子點螢光體以外之量子點螢光體的螢光乃亦可爲 -14- 200931076 目視色要素光，而亦可爲代碼專用要素光。 構成第1量子點登光體之半導體物質與構成第2量子 點螢光體之半導體物質乃爲同一，第1量子點螢光體的粒 徑與第2量子點螢光體的粒徑乃不同之構成者爲理想。 如爲上述之構成，只由將粒徑作爲不同者，因可在特 定的波長範圍內，實質上連續性地使第1螢光及第2螢光 的峰値波長者，故可簡單地使所期望之多樣的目視色之射 0 出光放出。另外，無需管理維持複數種類之半導體物質所 成的量子點螢光體，而可簡單地製作波長變換器。然而， 對於將粒徑作爲同一，將半導體物質作爲不同之情況，係 即使作爲準備複數種類之半導體物質，射出光的目視色之 多樣性亦變低。 第1量子點螢光體的粒徑乃大體上對應於特定之目視 色的粒徑，第2量子點螢光體的粒徑乃對應於第2螢光的 峰値波長實質上未重複於第1螢光的峰値波長之特定波長 〇 的粒徑，針對在波長變換器之2量子點螢光體的濃度乃理 想爲實質上未使經由第1螢光體群的發色的濃度之構成者 〇 如爲上述的構成，經由將第1螢光作爲目視色要素光 而使用，將第2螢光作爲代碼專用要素光而使用之時，可 簡單且確實使識別資訊存在內部者。另外，因對於第2螢 光之峰値波長的選擇自由度變大，而可將識別資訊作爲多 樣化。此情況，識別資訊乃亦可唯由第2螢光所識別的資 訊，亦可由第1螢光與第2螢光雙方所識別的資訊。例如 -15- 200931076 ，作爲唯由第2螢光所識別的資訊，係可舉出第2螢光的 峰値波長之絕對波長（針對在光譜的絕對位置），第2螢 光的峰値波長之絕對強度，作爲第1螢光與第2螢光雙方 所識別的資訊，係可舉出對於與第1峰値波長與第2螢光 之峰値波長的間隔等之第1螢光之峰値波長的第2螢光之 峰値波長的相對波長，對於第1螢光之峰値波長的第2螢 光之峰値波長的相對強度。作爲代碼專用要素光而使用的 φ 第2螢光乃亦可爲可辨識之可視範圍的光，而亦可爲無法 辨識紅外線範圍或紫外線範圍之可視範圍以外的範圍的光 。然而，即使將第1螢光及第2螢光作爲目視色要素光而 使用，亦可將識別資訊作爲存在於內部者，但可較此情況 ，將識別資訊作爲多樣化。 理想爲更加含有與第2量子點螢光體相同之半導體物 質所成 '依據入射光的吸收，較入射光的最短波長爲長， 與第1螢光與第2螢光峰値波長不同，且將產生相互不同 之螢光的至少1種類之複數個附加量子點螢光體，包含於 種類別之至少1種類的附加螢光體群，至少1種類之附加 量子點螢光體之種類別的各粒徑乃相互不同，且對應於至 少1種類之附加量子點螢光體之各峰値波長，實質上未重 複於第1螢光之波長分布的特定波長之粒徑，針對在波長 變換器之至少1種類之附加量子點螢光體之種類別的各濃 度乃較針對在波長變換器之第1量子點螢光體的濃度爲小 ，實質上未使經由第1螢光體群之發色變色之濃度的構成 者。 -16- 200931076 如爲上述之構成，經由將第1螢光作爲目視色要素光 而使用，與第2螢光同時將從至少1種類之附加量子點螢 光體之至少1種類的螢光（以下，亦稱作「附加螢光」） ，作爲代碼專用要素光而使用之時，較只將第2螢光作爲 代碼專用要素光之情況，可使識別資訊做更多樣化者。此 情況，識別資訊乃亦可由第2螢光及至少1種類之附加螢 光體所識別的資訊，亦可由第1螢光與第2螢光與至少1 φ 種類之附加營光體所識別的資訊。作爲由第2螢光及至少 1種類之附加螢光體所識別的資訊，係可舉出更加複合組 合此等峰値波長之絕對波長的組合，經由此等波長分布之 重複的半寬度，此等峰値波長之相對間隔，此等峰値波長 之相對間隔的組合，此等識別資訊。如將第1螢光之峰値 波長或強度，加上於識別資訊之要素，可更使多樣的識別 資訊作爲存在於內部者。作爲代碼專用要素光而使用的附 加螢光乃亦可爲可辨識之可視範圍的光，而亦可爲無法辨 〇 識紅外線範圍或紫外線範圍之可視範圍以外的範圍的光。 然而，目視色要素光乃可辨識之可視光範圍的光。 第2量子點螢光體及至少1種類之附加量子螢光體的 各種類之濃度乃理想爲相互不同之構成者。 如爲上述的構成，較唯由關連於第2螢光及至少1種 類之附加營光之波長的資訊而使識別資訊作爲存在於內部 之情況，可使識別資訊做更多樣化者。具體而言，可更將 第2螢光及至少1種類之附加螢光之絕對強度或相對強度 的組合，作爲識別資訊之要素而作追加。 -17- 200931076 來自第2螢光體群之第2螢光與來自至少1種類之附 加螢光體群的螢光乃理想爲在第2螢光之峰値波長附近， 使第2螢光與半寬度不同之波長分布的螢光產生的構成者 〇 如爲上述之構成，可將第2螢光與來自至少1種類之 附加螢光體群之螢光的合成光之波長分布的半寬度値，加 上於識別資訊之要素者。另外，一般，較來自1種類的螢 0 光體群的螢光（第2螢光）的半寬度爲大形狀之波長分布 ，係因亦可經由複數種類的螢光體群（第2螢光及至少1 種類之附加螢光體群）之各種組合而合成，而即使作爲經 由分光學解析而了解波長分布，將至複數種類的螢光體群 之組合爲止’進行再現者亦變爲困難，識別資訊的隱蔽性 變高。由此，辨識此構成之波長變換器與經由模仿所製作 之波長變換器之精確度則提升。 將合成與特定目視色相同之目視色的2種類的光，作 ❹ 爲第1目視色要素光及第2目視色要素光，第1量子點螢 光體的粒徑乃爲對應於第1目視色要素光之波長的粒徑， 第2量子點螢光體的粒徑乃爲對應於第2目視色要素光之 波長的粒徑，針對在波長變換器之第1量子點螢光體的濃 度乃爲對應於第1目視色要素光之強度的濃度，針對在波 長變換器之第2量子點螢光體的濃度乃爲對應於第2目視 色要素光之強度的濃度之構成者則爲理想。 如爲上述的構成，經由將第1螢光及第2螢光作爲目 視色要素光而使用之時，可使識別資訊作爲存在於內部者 -18- 200931076 。此情況，識別資訊乃成爲由第1螢光與第2螢光雙方所 識別的資訊。作爲由第1螢光與第2螢光雙方所識別的資 訊，例如可舉出此等峰値波長的絕對波長，相對波長及絕 對波長，相對強度之組合。作爲目視色要素光之第1及第 2螢光乃可辨識之可視光範圍的光。 理想爲更加含有與第1量子點螢光體相同之半導體物 質所成，依據入射光的吸收，較入射光的最短波長爲長， Q 與第1螢光與第2螢光峰値波長不同，且將產生相互不同 之螢光的至少1種類之複數個附加量子點螢光體，包含於 種類別之至少1種類的附加營光體群，至少1種類之附加 量子點螢光體之種類別的各粒徑乃相互不同，第1量子點 螢光體的粒徑及濃度，第2量子點螢光體的粒徑及濃度， 以及至少1種類之附加量子點螢光體的種類別之粒徑及濃 度的組合乃第1螢光，第2螢光及來自各至少1種類之附 加量子點螢光體之營光的混色，與特定之目視色相同之組 〇 合的構成則爲理想。 如爲上述之構成，經由與第1螢光及第2螢光同時將 從至少1種類之附加量子點螢光體之至少1種類的附加螢 光，作爲目視色要素光而使用之時，較將第1螢光及第2 螢光作爲目視色要素光之情況，可使識別資訊做更多樣化 者。此情況，識別資訊乃成爲由第1螢光與第2螢光及至 少1種類的附加螢光所識別的資訊。作爲識別的資訊，例 如可舉出此等峰値波長的絕對波長，相對波長及絕對強度 ，相對強度之組合。作爲目視色要素光之附加螢光乃可辨 -19- 200931076 識之可視光範圍的光。 構成第1量子點螢光體的半導體物質與構成第2量子 點螢光體的半導體物質乃可作爲不同之構成者。 如爲上述之構成’因由將半導體物質作爲不同而可使 第1螢光及第2螢光的峰値波長變化者，故可使所期望之 目視色之射出光放出。然而，爲了得到所期望之目視色， 將半導體物質作爲最佳化。 ^ 有關本發明之發光裝置係使至少一部分的發光色，使 用有關上述之本發明的波長變換器而發色的發光裝置。本 發明之發光裝置係包含光生成部，和含有將來自光生成部 的光變換爲特定目視色之有關本發明之波長變換器之至少 1個的波長變換部，和固定波長變換部與光生成部之相對 性位置的固定部之發光裝置。作爲發光裝置，例如可舉出 顯示裝置及照明裝置。另外，亦可爲組合目視色不同之複 數發光裝置之複合顯示裝置或複合照明裝置。然而，對於 G 爲複合顯示裝置或複合照明裝置之情況，構成此等之至少 一部分的發光裝置，如爲本發明之發光裝置爲佳。發光裝 置係波長變換器乃有關本發明之波長變換器者以外係亦可 爲與以往之任何發光裝置相同之構成。 至少1個之波長變換部乃亦可唯由含有相同之波長變 換器的波長變換部所構成，而亦可爲含有包含內部構成不 同之2種類的波長變換器任一方之複數種類之波長變換部 (第1波長變換部及第2波長變換部）的構成。在此，內 部構成不同係指射出光的波長分布不同者。即使爲使用2 -20- 200931076 種類之波長變換器的情況，來自各波長變換部的射出光之 目視色係爲同一色。使波長變換器之種類不同的第1波長 變換部及第2波長變換部之一方，呈表現特定圖形或文字 或記號地配置者則爲理想。此情況’因亦可使發光裝置知 識別資訊，作爲發光裝置全體而存在於內部者。 更加地，有關本發明之發光裝置係含於第1波長變換 部及第2波長變換部之一方的波長變換器’因如爲有關本 ❹ 發明之波長變換器即可，而含於第1波長變換部及第2波 長變換部雙方之波長變換器，亦可爲有關本發明之波長變 換器。 波長變換部係如爲至少含有波長變換器之構成即可’ 具體而言，可舉出只包含波長變換器之構成，包含基體與 形成於基體上之波長變換器的構成，包含波長變換器與配 設於波長變換器上之導光體的構成，包含反射基體與形成 於反射基體上之波長變換器與形成於波長變換器之上方的 ❹ 導光體之構成。基體係從發光亮度及目視色調整的觀點， 以透明性高之材料加以形成爲佳。反射基體係從發光亮度 的觀點，以反射率高之材料加以構成爲佳。導光體係形成 將來自光生成部的光引導至波長變換器之導波路徑，從發 光亮度及目視色調整的觀點，以透明性高之材料加以形成 爲佳。作爲波長變換器之形狀，例如可舉出平板狀，半球 體狀，凹凸形狀。 在此，對於有關本發明之波長變換器及發光裝置，參 照圖面同時加以具體說明。 -21 - 200931076 〔第1實施例形態〕 第1實施型態之波長變換部器乃對應於入射光的入射 ’射出混合1種類之目視色要素光與1種類之代碼專用要 素光之特定目視色之射出光的構成。圖1乃樣式性地顯示 波長變換器之構成的一例的剖面圖。圖2乃定性地顯示來 自波長變換器之射出光的波長分布之一例說明圖。針對在 Q 圖2，將作爲目視色要素光而發揮機能的螢光，以粗實線 表示，將作爲代碼專用要素光而發揮機能的螢光，以細實 線表示。然而，在以下，針對在顯示來自作爲參照之波長 變換器之射出光的波長分布之各種圖，亦作爲同樣。 如圖1所示，波長變換器乃包含經由分散保持體10 所分散固定之複數個之第1量子點螢光體1，和複數個之 第2量子點螢光體2。第1量子點螢光體1乃由半導體物 質所成，粒徑乃爲dl之超微粒子。第2量子點螢光體2 〇 乃與第1量子點螢光體1相同之半導體物質所成，粒徑乃 較dl爲大之d2之超微粒子。第1量子點螢光體1之濃度 乃pi，第2量子點螢光體2之濃度乃較pi相當小之P2 〇 來自波長變換器的射出光係如圖2所示，含有來自第 1量子點螢光體之螢光體群的第1主螢光L1與來自第2 量子點螢光體之螢光體群的第2主螢光L2。第1主螢光 L 1乃峰値波長對應於所期望之目視色的λ 1 ’半寬度乃 W1。然而，第1量子點螢光體1之粒徑dl係第1主螢光 -22- 200931076 L 1之峰値波長呈λ 1地加以調製。然而，第1量子點螢光 體1之濃度Ρ 1係針對在第1主螢光L1之峰値波長的強 度呈所期望之強度地，也就是成所期望之亮度地加以調製 。第2主螢光L2係顯示與第1主螢光L1隔離之波長分布 ，爲可視範圍的波長，峰値波長乃較λΐ爲長之λ2，半寬 度乃實質上與W1同一之W2。然而，第2量子點螢光體2 之粒徑d2係第2主螢光L2之波長分布與第1主螢光L1 0 之波長分布呈隔離地加以調製。另外，第2量子點螢光體 2之濃度p2係未實質上使經由第1主螢光L1之目視色變 色，但對於遮斷第1主螢光L1之情況，係將第2主螢光 L2，調整爲可經由目視觀察程度之濃度。 將來自波長變換器的射出光，藉由至少遮斷λ 1附近 之波長，但未遮斷λ2附近之波長之濾光片等而進行觀察 時，觀察到對應於λ 2之波長的發光。由此，可識別本形 態之波長變換器，和變換爲同一目視色之其他波長變換器 φ 者。例如，經由決定各製造商等，對於各製造商，如決定 第2量子點螢光體2之粒徑，可特定製造商者。即使作爲 模仿波長變換器之外觀及目視色，因模仿射出光的全體之 波長分布者爲困難，而可特定模仿品或原本品。 針對在上述，對於使用專用濾光片，經由辨識而確認 第2主螢光L2的波長之構成，已做過說明’但亦可爲經 由分光學的手法而確認之構成。另外，亦可爲經由辨識無 法確認，但可經由分光學的手法而確認之構成。例如，可 舉出更使第2量子點營光體2之濃度下降’第2主螢光 -23- 200931076 L2乃變更爲經由辨識而無法確認之強度，或加大第2量 子點螢光體2之粒徑，將第2主螢光L2的峰値波長，縮 小紅外線範圍之波長或第2量子點螢光體2之粒徑而變更 爲紫外線範圍之波長之構成。 針對在上述，將第2主螢光L2之峰値波長的絕對波 長作爲識別資訊而利用，但對於經由分光學的手法而確認 之情況，係亦可將第1主螢光L1與第2主螢光L2之峰値 0 波長的間隔，第2主螢光L2之峰値波長的絕對強度，第 1主營光L1與第2主螢光L2之相對強度，作爲識別資訊 者。此情況，因識別要素增加，而可將識別資訊作爲多樣 化。另外，作爲構成識別資訊之要素，亦可將第1主螢光 之峰値波長L 1的絕對波長，加上於識別要素者。更加地 ，亦可將此等之識別要素的組合，作爲識別資訊。此情況 ，因識別要素增加，而可將識別資訊作爲多樣化。 針對在上述，對於使第1主螢光L1之峰値波長的波 〇 長分布與第2主螢光L2之波長的波長分布作爲隔離之情 況，已進行過說明，但如隔離爲至少顯示雙頭之峰値的程 度即可。此情況，如與分光學的手法同時援用峰値分解之 解析手法爲佳。 針對在上述，作爲代碼專用要素光而使用1種類的螢 光，但作爲代碼專用要素光，更加地亦可至少使用1種類 的螢光。此情況，波長變換部器乃如作爲含有與第1量子 點螢光體及第2量子點螢光體雙方粒徑不同之量子點螢光 體的構成爲佳。如爲此構成，因更加地識別要素增加，而 -24- 200931076 可較使用1種類之代碼專用要素光的情況，更將識別資訊 作爲多樣化。然而，對於使用複數種類之代碼專用要素光 的情況，係呈未顯示雙頭之峰値地，成爲將複數種類之代 碼專用要素光的峰値波長作爲接近之波長地選擇粒徑，亦 可將經由此等重疊之單頭峰値之半寬度或分散作爲識別要 素者。 在此，對於波長變換部器乃更含有至少1種類之量子 0 點螢光體群，使此等各種量子點螢光體群作爲代碼專用要 素光而發揮機能之變化例的構成加以說明。圖3〜圖6乃 定性地顯示來自變化例之波長變換器之射出光的波長分布 之一例說明圖。 第1變化例之波長變換部器（未圖示）乃加上於第1 量子點螢光體1所成之螢光體群及第2量子點螢光體2所 成之螢光體群，包含第3量子點螢光體（附加量子點螢光 體）所成之螢光體群。來自第1變化例之波長變換器的射 〇 出光係如圖3所示，含有第1主螢光L1與第2主螢光L2 與第3主螢光L3。第3主螢光L3係顯示與第1主螢光L1 及第2主螢光L2雙方實質上隔離之波長分布’爲可視範 圍的波長，峰値波長乃較爲長之λ3。然而’第3量子 點螢光體乃與第1量子點螢光體1或第2量子點螢光體2 同一之半導體物質所成，第3主螢光L3之峰値波長乃呈 λ3地調製其粒徑。另外’第3量子點螢光體之濃度係針 對在第3主螢光L3之峰値波長λ3之強度乃呈與針對在 第2主螢光L2之峰値波長Α2之強度實質上同一地加以 -25- 200931076 調整，第3主螢光L3乃作爲代碼專用要素光而發揮機能 。第1變化例之波長變換部器係比較於上述實施形態1之 波長變換部器，因構成識別資訊之要素增加，而識別資訊 產生複雜化，模仿等乃變爲困難。另外，將來自波長變換 器的射出光，藉由至少遮斷λ 1附近之波長，但未遮斷入2 及λ3雙方附近之波長之濾光片等而進行觀察時，觀察到 複合對應於λ2之波長的發光與對應於λ3之波長的發光 0 光，另外，藉由至少遮斷λΐ及；12附近之波長，但未遮 斷Λ3附近之波長之濾光片等而進行觀察時，因觀察到對 應於；13之波長的發光，而識別第1變化例之波長變換部 器與其他之波長變換部器的精確度則提升。 第2變化例之波長變換部器（未圖示）乃加上於第1 量子點螢光體1所成之螢光體群及第2量子點螢光體2所 成之螢光體群，包含第3量子點螢光體（附加量子點螢光 體）所成之螢光體群，和第4量子點螢光體（附加量子點 〇 螢光體）所成之螢光體群。來自第2變化例之波長變換器 的射出光係如圖4所示，含有第1主螢光L1與第2主螢 光L2與第3主螢光L3與第4主螢光L4。第4主螢光L4 係顯示與各第1主螢光L1〜第3主螢光L3’實質上隔離之 波長分布，爲可視範圍的波長，峰値波長乃較λ 3爲長之 λ4。然而，第4量子點螢光體乃與第1量子點螢光體1~ 第3量子點螢光體2同一之半導體物質所成’第4主螢光 L4之峰値波長乃呈λ 4地調製其粒徑。另外，各第3量子 點螢光體之濃度及第4量子點螢光體之濃度係未實質上使 -26- 200931076 經由第1主螢光L1之目視色變色，但對 光L1之情況，係將第3主螢光L3及第 整爲可經由目視觀察程度之濃度。然而，： 體之濃度及第4量子點螢光體之濃度乃與 體之濃度不同，又，爲相互不同之濃度。 L3’及第4主螢光L4係作爲代碼專用要素 第2變化例之波長變換部器係比較於上述 0 長變換部器，因構成識別資訊之要素增加 爲複雜化，模仿等乃變爲更困難。另外， 變換部器的射出光，使用3種類以上的瀘 到3階段的顏色變化者，辨識第2變化例 與其他的之波長變換部器之精確度則更爲3 第3變化例之波長變換部器（未圖示 量子點螢光體1所成之螢光體群及第2量 成之螢光體群，包含第5量子點螢光體（ Q 體）所成之螢光體群，和第6量子點螢光 螢光體）所成之螢光體群。來自第3變化 的射出光係如圖5所示，含有第1主螢光 光L2’與第5主螢光L5與第6主螢光L6< 及第6主螢光L6乃大約從各第2主螢光 第2主螢光L2’依序隔離之波長分布，峰fjl 及λ6。然而，各第5量子點螢光體及第 乃與第1量子點螢光體1或第2量子點螢 導體物質所成，第5主螢光L5及第6量 於遮斷第I主螢 4主螢光L4，調 第3量子點螢光 第2量子點螢光 各第3主螢光 光而發揮機能。 第1變化例之波 ，而識別資訊更 經由將來自波長 光片等而可觀察 之波長變換部器 是升。 )乃加上於第1 子點螢光體2所 附加量子點螢光 體（附加量子點 例之波長變換器 L1與第2主螢 第5主螢光L5 L2’之半寬度之 I波長乃各爲λ 5 6量子點螢光體 光體2同一之半 子點螢光體之峰 -27- 200931076 値波長乃呈λ5及λ6地調製其粒徑。另外，第5量子點 螢光體之濃度及第6量子點螢光體之濃度係針對在第5主 螢光L5之峰値波長λ5之強度及針對在第6主螢光L6之 峰値波長λ6之強度乃呈與針對在第2主螢光L2之峰値 波長λ 2之強度實質上同一地加以調整，各第5主螢光L5 及第6主螢光L6乃作爲代碼專用要素光而發揮機能。另 外，第2主螢光L2’，第5主螢光L5及第6主螢光L6之 Q 合成光LA乃大略成爲台形狀。第3變化例之波長變換部 器係作爲構成識別資訊之識別要素，可利用寬度WA的値 者。另外，如此之台形狀係因亦可經由各種螢光體群之組 合而實現，將至同一之內部構成爲止，進行再現之情況係 爲困難，模仿等變爲極爲困難。另外，經由將來自波長變 換部器的射出光，使用複數種類以上的濾光片等而可觀察 到多階段的顏色變化者，辨識第3變化例之波長變換部器 與其他的之波長變換部器之精確度則提升。 ❹ 第4變化例之波長變換部器（未圖示）乃加上於第1 量子點螢光體1所成之螢光體群及第2量子點螢光體2所 成之螢光體群，包含第7量子點螢光體（附加量子點螢光 體）所成之螢光體群，和第8量子點螢光體（附加量子點 螢光體）所成之螢光體群。來自第4變化例之波長變換器 的射出光係如圖6所示，含有第1主螢光L1與第2主螢 光L2與第7主螢光L7與第8主螢光L8。然而，第7主 螢光7及第8主登光L8係爲可視範圍的波長，峰値波長 乃各爲λ7及Λ9。然而，各第7量子點螢光體及第8量子 -28- 200931076 點螢光體乃與第1量子點螢光體1或第2量子點螢光體2 同一之半導體物質所成，第7主螢光L7及第8量子點螢 光體之峰値波長乃各呈λ7及Λ7地調製其粒徑。另外’ 各第7量子點螢光體之濃度及第8量子點螢光體之濃度係 未實質上使經由第1主螢光L1之目視色變色，但對於遮 斷第1主螢光L1之情況，係將第7主螢光L7及第8主螢 光L8，調整爲可經由目視觀察程度之濃度，第2主螢光 0 L2，第7主螢光L7及第8主螢光L8之合成光LB的波長 分布乃呈與第1主螢光L1不同之半寬度WB的峰値形狀 地加以調整。各第7主螢光L7及第8主螢光L8係作爲代 碼專用要素光而發揮機能。第4變化例之波長變換部器係 作爲構成識別資訊之識別要素，可利用寬度的値者。另外 ，如此之合成光的峰値形狀係因亦可經由各種螢光體群之 組合而實現，更加地，即使作爲解析來自波長變換部器之 射出光的波長分布，調整至作爲合成前之螢光的寬度者因 〇 亦不易發覺到，而將同一之內部構成進行再現之情況係爲 困難，模仿等變爲極爲困難。另外，經由將來自波長變換 部器的射出光，使用複數種類以上的濾光片等而可觀察到 多階段的顏色變化者，辨識第4變化例之波長變換部器與 其他的之波長變換部器之精確度則提升。 針對在上述，在識別資訊的判讀，如圖1所示，對於 利用射出於與入射光的入射側相反側之螢光情況（透過利 用），已做過說明，但針對在本發明，亦可爲射入光的一 部分乃透過波長變換部器而加以射出，與第1螢光及第2 -29- 200931076 螢光同時利用透過光之情況。另外，對於利用射出於與入 射光的入射側相反側的光情況，已做過說明，但亦可爲第 1螢光及第2螢光乃並非只射出於與入射光之傳播方向同 一方向，而因放出於各種方向，如圖7所示，利用射出於 與入射光的入射側同一側的光之構成（反射利用）。更加 地，亦可爲如圖8所示，設置反射板2 0，使放出於與入射 側相反側的光，射出於與入射側同一側的構成。然而，對 0 於顯示裝置或照明裝置之發光控制，利用波長變換部器之 情況，主要經由透過利用形態所使用，對於利用於標牌等 之情況或波長變換部器乃形成製品之一部分之情況，主要 經由反射利用形態所使用。 〔第2實施例形態〕 第2實施型態之波長變換部器乃對應於入射光的入射 ，射出混合2種類之目視色要素光之特定目視色之射出光 〇 的構成。圖9乃模式性地顯示來自波長變換器之射出光的 波長分布之一例說明圖。然而，本形態之波長變換部器係 對於模式性而言，因與第1實施形態相同之構成所顯示’ 而亦參照圖1。 本形態之波長變換部器係如圖1所示’包含經由分散 保持體10所分散固定之複數個之第1量子點螢光體〗，和 複數個之第2量子點螢光體2。第1量子點螢光體1乃由 半導體物質所成，粒徑乃爲d3之超微粒子。第2量子點 螢光體2乃與第1量子點螢光體1相同之半導體物質所成 -30- 200931076 ，粒徑乃較d3爲大之d4之超微粒子。第1量子點螢光體 1之濃度乃P3，第2量子點螢光體2之濃度乃p4。 來自波長變換器的射出光係如圖9所示’含有來自第 1量子點螢光體之螢光體群的第1主螢光L11與來自第2 量子點螢光體之螢光體群的第2主螢光L12。第1主螢光 L11係峰値波長乃可視範圍之波長的λ 11，半寬度乃W11 。第2主螢光L12係顯示與第1主螢光L11隔離之波長分 0 布，爲可視範圍的波長，峰値波長乃較λΐΐ爲長之λ12, 半寬度乃實質上與W11同一之W12。第1量子點螢光體1 之粒徑d3及第2量子點螢光體2之粒徑d4乃調整爲可發 光成所期望之目視色的組合。另外，第1量子點螢光體1 之粒徑濃度P 3及第2量子點螢光體2之濃度p 34的相對 値乃調整爲可發光成所期望之目視色的組合。另外，第1 量子點螢光體1之粒徑濃度P3及第2量子點螢光體2之 濃度！〇 3 4的絕對値乃呈所期望之亮度地加以調整。然而， G 第1量子點螢光體1及第2量子點螢光體2之粒徑係第1 主螢光L11之波長分布與第2主螢光L12之波長分布呈隔 離地加以調製。來自波長變換器的射出光之目視色乃第1 主螢光L11之發色與第2主螢光L12之發色的混色。然而 ，經由其混色之目視色，係與以特定的濃度，調配將特定 之波長AC作爲峰値波長之1種類的量子點營光體所成之 螢光體群情況之主螢光LC同一色。 將來自波長變換器的射出光，藉由遮斷λΐΐ或A12 附近之波長的濾光片等而進行觀察時，觀察到各自對應於 -31 - 200931076 λΐΐ或λ 12之波長的發光。由此，可識別本形態之波長 變換部器，和變換爲同一之目視色的其他之波長變換部器 者。例如，經由決定各製造商等，對於各製造商，如決定 第1量子點螢光體1及第2量子點螢光體2之粒徑，因清 楚地決定峰値波長，故可特定製造商者。另外，即使作爲 模仿波長變換器之外觀及目視色，因模仿射出光的全體之 波長分布者爲困難，而可特定模仿品或原本品。 0 針對在上述，對於使用專用濾光片，經由辨識而確認 第1主螢光L11或第2主螢光L12的波長之構成，已做過 說明，但亦可爲經由分光學的手法而確認。 針對在上述，將第1主螢光L11或第2主螢光L12之 峰値波長的絕對波長作爲識別資訊而利用，但亦可將第1 主螢光L 1 1與第2主螢光L 1 2之峰値波長的組合，或此等 之間隔，第1主螢光L11或第2主螢光L12之峰値波長的 絕對強度，第1主螢光L11與第2主螢光L12之峰値波長 〇 的相對強度，作爲識別資訊者。此情況，因識別要素增加 ’而可將識別資訊作爲多樣化。另外，亦可將此等之識別 要素的組合’作爲識別資訊。此情況，因識別要素增加， 而可將識別資訊作爲更多樣化。 針對在上述，對於使第1主螢光L11之峰値波長的波 長分布與第2主螢光L12之波長的波長分布作爲隔離之情 況’已進行過說明’但如隔離爲至少顯示雙頭之峰値的程 度爲佳。此情況，如與分光學的手法同時援用峰値分解之 解析手法爲佳。 -32- 200931076 針對在上述，對於作爲目視色要素光而使用2種類的 螢光（第1主螢光L11及第2主螢光L12)之情況，已做 過說明’但作爲目視色要素光，更加地亦可至少使用1種 類的螢光。此情況，波長變換器乃作爲包含第i量子點螢 光體1及第2量子點螢光體2雙方與粒徑不同之量子點螢 光體之構成’由此等3種類之粒徑的組合及此等3種類之 濃度的組合’使所期望之目視色發色。如爲此構成，因更 0 加地識別要素增加，而可較使用2種類之目視色要素光的 情況’更將識別資訊作爲多樣化。然而，對於使用複數種 類之目視色要素光的情況，係至少2個目視色要素光呈未 顯示雙頭之峰値地，成爲將複數種類之目視色要素光的峰 値波長作爲接近之波長地選擇粒徑，亦可將經由此等重疊 之單頭峰値之半寬度或分散作爲識別要素者。 在此，對於波長變換部器乃更含有至少1種類之量子 點螢光體群，使此等各種量子點螢光體群作爲目視色要素 Φ 光而發揮機能之變化例的構成加以說明。圖1 〇乃定性地 顯示來自變化例之波長變換器之射出光的波長分布之一例 說明圖。變化例之波長變換部器（未圖示）乃加上於第1 量子點螢光體1所成之螢光體群及第2量子點螢光體2所 成之螢光體群，包含第3量子點螢光體（[附加量子點螢 光體])所成之螢光體群。來自變化例之波長變換器的射 出光係如圖10所示，含有第1主螢光LU與第2主螢光 L12與第3主螢光L13。第3主螢光L13係顯示與第1主 螢光L11及第2主營光L12雙方實質上隔離之波長分布， -33- 200931076 爲可視範圍的波長，峰値波長乃較入12爲長之λ13。然而 ，第3量子點螢光體乃與第1量子點螢光體1或第2量子 點螢光體2同一之半導體物質所成’第3主螢光L13之峰 値波長乃呈λ3地調製其粒徑。第1量子點螢光體之濃度 ，第2量子點螢光體之濃度及第3量子點螢光體之濃度係 第1主螢光L11與第2主螢光L12與第3主營光L13之發 色的混色呈所期望之目視色地加以調製。隨之’第3主螢 φ 光L13亦作爲目視色要素光而發揮機能。然而’其混色之 目視色，係與以特定的濃度，調配將特定之波長作爲 峰値波長之1種類的量子點螢光體所成之螢光體群情況之 主螢光LD同一色。變化例之波長變換部器係比較於上述 第2實施形態之波長變換部器，因構成識別資訊之要素增 加，而識別資訊產生複雜化，模仿等乃變爲困難。另外， 將來自波長變換器的射出光，藉由至少遮斷λΐΐ附近之波 長，但未遮斷λ12及Λ13雙方附近之波長之濾光片等而 〇 進行觀察時，觀察到複合對應於λ12之波長的發光與對應 於λ13之波長的發光光，另外，藉由至少遮斷λΐΐ及入 1 2附近之波長，但未遮斷λ 1 3附近之波長之濾光片等而 進行觀察時，因觀察到對應於λ 3之波長的發光，而識別 變化例之波長變換器，和由同一目視色而發色之其他的波 長變換器之精確度則提升。 〔第3實施例形態〕 第3實施形態之發光裝置乃具備形成爲矩陣狀之複數 -34- 200931076 的單位發光要素。圖11乃膜式性地顯示發光裝置之單位 發光要素的構成之一例的剖面圖。單位發光要素乃如圖11 所示，具備激發光源部（[光生成部])，和設置於來自激 發光源之激發光的放出側，波長變換器112乃形成於透明 基板111上之波長變換部110，和固定此等之固定部（未 圖示）。然而，波長變換器112之構成乃與圖1所示之情 況同一之有關本發明之構成。 0 如爲本形態之發光裝置，因以不同峰値波長之第1螢 光及第2螢光的組合而發光爲特定之目視色，而如在上述 之第1實施形態及第2實施形態所說明地，可埋入識別資 訊者。由此，可進行製造商之識別或真赝的判定。 波長變換器112係亦可呈對各單位發光要素隔離地加 以形成，而亦可呈以複數之單位發光要素所加以共用地， 遍佈此等範圍所形成，亦可呈以形成爲矩陣狀之複數之單 位發光要素之全體所加以共用地，遍佈全範圍所形成。 〇 針對在上述，對於針對在複數之單位發光要素之所有 ，使用本發明之波長變換部器之情況，已做過說明，但對 於複數之單位發光要素之一部分而言，亦可適用。另外， 對於在上述使用1種類之波長變換部器的情況，已做過說 明，但實質上產生同一之目視色，但其波長分布係亦可爲 使用不同之至少2種類的波長變換部器之構成。例如，可 舉出複數之單位發光要素乃由藉由第1波長變換部器而發 光之第1單位發光要素群（[第1波長變換部部])，和生 成實質上與第1波長變換部器同一之目視色的光，但其波 -35- 200931076 長分布係藉由不同之第2波長變換部器而發光之第2單位 發光要素群（[第2波長變換部])所構成，第1單位發光 要素群及第2單位發光要素群之一方乃以對應於特定之圖 形或文字或記號之圖案而加以配置之構成。如爲此構成， 對於在通常使發光裝置動作之狀態，藉由特定的濾光片而 觀察來自發光裝置的發光情況，經由第1單位發光要素群 之目視色與第2單位發光要素群之目視色不同者，顯示特 0 定之圖形或文字或記號者。如此，利用藉由複數種類之波 長變換部器的發光之相對性變化，亦可作爲發光裝置全體 而使發光裝置之識別資訊作爲存在於內部者。然而，對於 爲具備複數種類之波長變換部器的構成情況，至少1種類 之波長變換部器，如爲本發明之波長變換部器爲佳。 〔第4實施例形態〕 第4實施形態之複合發光裝置乃具備複數的單位發光 〇 要素。圖12乃模式性地顯示複合發光裝置之一例的斜視 圖，圖1 3乃模式性地顯示單位發光裝置之一例的分解斜 視圖。如圖12所示，複合發光裝置200乃具備基框201， 組裝於基框201之複數的單位發光裝置211-219。各單位 發光裝置211〜2 19係雖發光面積或發光色不同，但內部構 造係因實質上爲相同，而針對在以下，只對於單位發光裝 置211做詳細說明。單位發光裝置211乃具備框體221， 和激發光源222 ([光生成部])，和設置於來自激發光源 222之激發光的放出側之光擴散板23 1，和層積於光擴散 -36- 200931076 板23 1上之波長變換部器23 2 ([波長變換部])，和層積 於波長變換部器23 1上之記名板23 3 ’和層積於記名板 233上之保護板234，和於框體221 ’固定光擴散板231， 波長變換部器232，記名板23 3及保護板234的固定框 223 ([固定部])。波長變換器23 2乃與圖1所示之情況同 一之有關本發明之波長變換部器。然而，針對在單位發光 裝置211〜219之波長變換部器亦爲有關本發明之波長變換 ❹ 部器。 如爲複合發光裝置200，經由使用對於各複數之單位 發光裝置211〜219的特定濾光片之色變化的觀察或發光色 之成分分析，比較於單一之發光裝置的情況，識別複合發 光裝置200與其他之複合發光裝置的精確度則更爲提升。 另外，例如，針對在複數之單位發光裝置21 1〜219之中2 個的單位發光裝置乃以同一之目視色而發色之構成的情況 ，經由將針對在此等單位發光裝置之波長變換器232的內 〇 部構成作爲不同之時，在通常的發光情況與藉由特定之濾 光片而觀察之情況，亦可相對性將此等單位發光裝置之發 色作爲不同者。由此，可極簡單地識別複合發光裝置200 與其他之複合發光裝置者。 針對在上述，關於對於單位發光裝置211具備1個之 波長變換器232的構成，已做過說明，但如圖14所示地 ’亦可取代波長變換器232，作爲於光擴散板23 1與記名 板233之間，具備波長變換部器235與波長變換部器236 ’經由波長變換部器23 5與波長變換部器236，以與波長 -37- 200931076 變換器232相同的目視色而發色之構成者。另外，如表示 圖15之底面圖及圖15中之A-A剖面的圖16之剖面圖所 示，亦可取代波長變換器232，作爲具備包含生成形成於 基板232C上之特定的目視色之第1波長變換膜232A ( f 第1波長變換部])，和生成與第1波長變換膜232A相同 之目視色，形成特定文字圖案之第2波長變換膜23 2B ( f 第2波長變換部])的波長變換器232’之構成者。單位發 Q 光裝置211係對於具備波長變換器232’之情況，係在通常 之發光時，在全面以同一之目視色而發色，另一方面，於 藉由特定之濾光片而觀察之情況，經由藉由第1波長變換 膜232A之發色與藉由第2波長變換膜232B之發色不同者 ，特定的圖案（圖中之IDEC )則浮現。由此，可極簡單 地識別複合發光裝置200與其他之複合發光裝置者。 另外，針對在上述之各實施形態，對於入射光，實質 上由各種的量子點螢光體所吸收，透過光實質上未產生之 ❹ 構成，已做過說明，但針對在本發明，亦可爲將入射光的 一部分作爲透過光而射出之構成。此情況，對於入射光乃 可視範圍的光之情況，透過光係作爲目視色要素光而發揮 機能，對於入射光乃可視範圍以外的光之情況，透過光係 成爲作爲代碼專用要素光而發揮機能者。對於透過光係作 爲目視色要素光而發揮機能之情況，細考慮此等影響，決 定各種量子點螢光體之粒徑或濃度。 在此，針對在放出圖2及圖9所示之螢光的波長變換 器之情況，對於入射光的一部分乃作爲目視色要素光而發 -38- 200931076 揮機能之情況，進行說明。圖1 7及圖1 8乃定性地顯示來 自針對在入射光的一部分乃作爲目視色要素光而發揮機能 之情況之波長變換器的射出光之波長分布的圖表。如圖17 及圖18所示地，峰値波長乃可視範圍內之波長λ 0之入射 光L0之中，未在波長變換器所吸收而透過之透過光L0’ 之發光強度乃對於使主螢光L1或主螢光L11之發色光變 化的程度大的情況，透過光L 0係成爲作爲目視色要素光 Q 而發揮機能者。也就是，來自波長變換器之射出光的目視 色係針對在圖17所示之情況，係由透過光L0’之發色與主 螢光L1之發色的混色而加以決定，針對在圖18所示之情 況，係由透過光L0’之發色與主螢光L11之發色與主營光 L 1 2之發色的混色而加以決定。 另外’針對在上述之各實施形態，對於使用1種類之 目視色要素光與至少1種類之代碼專用要素光的構成或使 用至少1種類之目視色要素光的構成，已做過說明，但針 〇 對在本發明’係可作爲組合此等之構成的構成，具體而言 ’係可作爲使用至少1種類之目視色要素光與至少1種類 之代碼專用要素光的構成者。 另外’針對在上述各實施形態，對於放出目視色要素 光或代碼專用要素光之量子點螢光體乃由同一種類之半導 體物質所形成之情況，已做過說明，但針對在本發明，放 出目視色要素光或代碼專用要素光之至少1種類的量子點 螢光體群乃亦可由與構成其他量子點螢光體之半導體物質 不同之半導體物質所構成。 -39- 200931076 〔產業上之可利用性〕 本發明係可適用於波長變換器，或使用波長變換器之 顯示裝置’特別是將產業機器之動作狀態或危險狀態等之 簡單的資訊通知於操作者之產業用顯示裝置，或使用波長 變換器之照明裝置。 0 【圖式簡單說明】 圖1乃模式性地顯示第1實施形態之波長變換器之一 例的剖面圖。 圖2乃定性地顯示來自第1實施形態之波長變換器之 射出光的波長分布之一例圖表。 圖3乃定性地顯示來自第1變化例之波長變換器之射 出光的波長分布之一例圖表。 圖4乃定性地顯示來自第2變化例之波長變換器之射 Q 出光的波長分布之一例圖表。 圖5乃定性地顯示來自第3變化例之波長變換器之射 出光的波長分布之一例圖表。 圖6乃定性地顯示來自第4變化例之波長變換器之射 出光的波長分布之一例圖表。 圖7乃模式性地顯示波長變換器之利用形態之其他一 例的剖面圖。 圖8乃模式性地顯示波長變換器之利用形態之其他一 例的剖面圖。 -40- 200931076 圖9乃定性地顯示來自第2實施形態之波長變換器之 射出光的波長分布之一例圖表。 圖10乃定性地顯示來自第2實施形態之波長變換器 之射出光的波長分布之其他一例圖表。 圖11乃模式性地顯示第3實施形態之發光裝置之單 位發光要素之一例的剖面圖。 圖12乃模式性地顯示第4實施形態之複合發光裝置 u 之一例的斜視圖。 圖1 3乃模式性地顯示第4實施形態之單位發光裝置 之一例的分解斜視圖。 圖1 4乃模式性地顯示第4實施形態之單位發光裝置 之其他一例的分解斜視圖。 圖1 5乃模式性地顯示在第4實施形態之單位發光裝 置之波長變換器的其他一例的底面圖。 圖1 6乃模式性地顯示在第4實施形態之單位發光裝 〇 置之波長變換器的其他一例的剖面圖。 圖1 7乃定性地顯示來自第4實施形態之單位發光裝 置之射出光的其他一例圖表。 圖18乃定性地顯示來自第4實施形態之單位發光裝 置之射出光的其他一例圖表。 【主要元件符號說明】 1 :第1量子點螢光體 2:第2量子點螢光體 -41 - 200931076200931076 IX. [Technical Field] The present invention relates to a wavelength converter and a light-emitting device using the same, The details relate to converting a specific incident light into a plurality of types of fluorescent light having different wavelengths and exciting light emitted from the excitation light source by the wavelength converter. A light-emitting device that converts into a plurality of types of fluorescent light of different wavelengths and outputs ❹ [Prior Art] As a light-emitting device that performs conventional illumination or display, Know that there is a wavelength converter, Light generated by a light source such as an LED, A device that is converted to a visual color corresponding to the type of the filter (for example, Refer to the patent document 1) below. A typical wavelength converter is a resin filter containing an organic phosphor (hereinafter, Also known as "organic fluorescent filter"), When light that excites the wavelength of the organic phosphor is incident, At least one part of the incident light is absorbed, Light of a visual color corresponding to the type of the organic phosphor is emitted. In the case of a wavelength converter such as an organic fluorescent filter which is a conventional light-emitting device, The lifetime of the organic phosphor is more exciting than the excitation source. In particular, the life of an LED light source with high practicality is short. Further, the dispersion of the wavelength distribution of the fluorescent light from the organic fluorescent filter is large. in recent years, It is known that there are a filter made of a semiconductor material or a resin filter containing inorganic fluorescent particles having a particle diameter of several micrometers formed of a semiconductor material (hereinafter, Collectively referred to as "inorganic fluorescent filter"), Greatly improve the length of life. However, -5- 200931076 'the valence band of the substance constituting the inorganic fluorescent particles and the electron energy level of the conduction band are retracted to obtain continuous energy. The dispersion of the wavelength distribution of the fluorescent light emitted therefrom is large. Patent Document 1: Japanese Patent Laid-Open Publication No. Hei 7- 9 9 3 4 5 [Disclosed] [Problems to be Solved by the Invention] 以往 A conventional light-emitting device In particular, a lighting device that performs illumination or simple display is easy to be an object of imitation. Even if it is equipped with information to identify the manufacturer on the light-emitting device, It is only set in the identifiable place, This information is still being imitated. As a countermeasure for such imitation, Considering the combination of color elements that will be produced to make a specific visual color, As a combination of specific complex color elements, the manufacturer of the recognition light-emitting device, But as mentioned above, Because the dispersion of the wavelength distribution of the fluorescent light of each color element is large, It is impossible to identify people with high precision. especially, For the case of organic fluorescent filters, Because of its color, the elements are prone to change over the years. Identification is more difficult. therefore, In the wavelength converter and the light-emitting device of the present invention, Reducing the dispersion of the wavelength distribution of the fluorescent light from a wavelength converter containing an inorganic phosphor formed of a semiconductor material, The recognition accuracy of the identification information via the color element is improved. [Means to solve the problem] In order to solve the above problems, The wavelength converter according to the present invention is a plurality of types of light that convert incident light into mutually different peak-to-peak wavelengths, -6-200931076 A wavelength converter that emits light of a specific visual color' is characterized by a semiconductor material. a first phosphor group 'in which a plurality of first quantum dot phosphors having a wavelength longer than a shortest wavelength of the incident light as a first fluorescence of a peak wavelength is generated based on the absorption of the incident light Made of semiconductor materials, a second phosphor of a second quantum dot phosphor containing a plurality of second fluorescent light having a different peak wavelength than the shortest wavelength of the incident light based on the absorption of the incident light The group 'and the dispersion φ hold the dispersion of the first quantum dot phosphor and the second quantum dot phosphor that constitute the first phosphor group and the second phosphor group. In addition, In order to solve the above problems, A light-emitting device according to the present invention is included; a light generating unit that generates light, And a light-emitting device including a wavelength conversion unit of a wavelength converter that converts light from the light-generating unit into a specific visible light, and a fixing unit that fixes the relative relationship between the wavelength conversion unit and the light-generating unit. The feature is that the wavelength converter comprises a semiconductor material 0, Containing light that absorbs light from the aforementioned light generating portion, a first phosphor group of a plurality of first quantum dot phosphors that generate the first fluorescent light, And made of semiconductor materials, a second phosphor group including a plurality of second quantum dot phosphors that absorb light from the light generating portion and generate a second fluorescent light having a different peak wavelength from the first fluorescent light. And dispersing and holding the first quantum dot phosphor constituting the first phosphor group and the second phosphor group and the dispersion holding body of the second quantum dot phosphor; The shortest wavelength of light from the light generating portion is shorter than the peak wavelength of the first fluorescent light. It is shorter than the peak wavelength of the second fluorescent light. 200931076 In addition, In order to solve the above problems, A light-emitting device according to the present invention is included; a light generating unit that generates light, And a first wavelength conversion unit including a first wavelength converter that converts light from the light generating unit into specific visible light, And a second wavelength conversion unit including a second wavelength converter that converts light from the light generating unit into specific visible light, And a light-emitting device that fixes the fixed portion of the arrangement 0 of the first wavelength conversion unit and the second wavelength conversion unit and the light generation unit, The first wavelength conversion unit is formed of a semiconductor material. a first phosphor group including a plurality of first quantum dot phosphors that generate the first fluorescent light based on light from the light generating unit, And made of semiconductor materials, a second phosphor group including a plurality of second quantum dot phosphors that generate a second fluorescent light having a peak-to-peak wavelength different from that of the first fluorescent light based on light from the light generating portion. And the dispersion-maintaining body of the first quantum dot phosphor and the second quantum dot phosphor of the first phosphor group and the second phosphor group, The second φ wavelength conversion unit includes a semiconductor material. a phosphor group of a third quantum dot fluorescent body that generates third fluorescent light based on light from the light generating portion, And a dispersion holding body of the third quantum dot phosphor described above, in which the phosphor group constituting the third quantum dot phosphor is dispersed and held, The shortest wavelength of light from the light generating portion is higher than the first fluorescent light. Among the second fluorescent light and the third fluorescent light, the fluorescence peak wavelength of the shortest peak wavelength is short. [Effect of the Invention] As the wavelength converter relating to the present invention, The specific visual color is -8- 200931076 is the first fluorescent light of the different peak wavelengths and the second fluorescent light. For at least one of the first fluorescent light and the second fluorescent light, Make the identification information as an insider. In addition, the wavelength of the peak long-lived fluorescence generated by the sub-point phosphor is smaller than that of the fluorescent light generated from the bulk phosphor. The identification information of the wavelength converter is used as a diversification. 0 as a wavelength converter relating to the present invention, Because of the wavelength converter of the Ming Dynasty, Lights up to a specific visual color with a combination of the first peaks of different peak wavelengths. And through the information of the fluorescent wavelength, Buried to identify information. In addition, the accuracy of the identification information of the device is increased more, Visual color, However, when the wavelength distribution of the light emission by the wavelength converting unit of the first wavelength converting unit is different, the pattern or the character of the first wavelength converting unit and the second wavelength converting unit are arranged. Can send a message, A filter that emphasizes the difference between the light emitted by the first wavelength conversion unit and the light emitted from the borrower, which is internally present as the entire light-emitting device, Observing the pattern or mark from the cause, It is easier to identify the identification information of the body. [Embodiment] With respect to the wavelength converter and the illumination combination of the present invention, And can be connected to wavelengths, Corresponding to the dispersion of the various cloths, the internal presence can be recognized by the accuracy of the use of the relevant fluorescence and the second fluorescent light at least. It is possible to recognize that the illuminating illuminating color is a specific illuminating light and the second constituting By one party, It is a recognition of the performance of the special light device. In this case, If the light is emitted by the second wavelength conversion optical device, As the best type of illuminating device, -9- 200931076 Explain. the following, After explaining the constitution of the commemoration of the present invention, For the specific composition, Refer to the drawing to explain at the same time. The wavelength converter according to the present invention converts incident light into a plurality of types of light having mutually different peak-to-peak wavelengths, Shooting light of a specific visual color, a first phosphor group including a plurality of first quantum dot phosphors, And a second phosphor group of a plurality of second quantum dot phosphors, And a dispersion-maintaining dispersion of the quantum dot phosphor constituting the phosphor group. here, “0 visual color” means the color recognized by the human eye. in particular, For the wavelength distribution (spectrum) of the emitted light, The color is determined by the wavelength distribution weighted by the relative visibility of the omentum. In more detail, The visual color means the color recognized by the chromaticity. however, Some of the slightly different colors that cannot be separated by the resolution of the human eye, That is, On the chromaticity diagram, The color displayed by each chromaticity in the narrow range around one point (arbitrary chromaticity) is used as the same visual color. E.g, For light with only two different peaks and ytterbium wavelengths, The visual color is the same color. In addition, Even if the combination of the peak 値 φ wavelength and intensity of 1 or a plurality of lights is different, These different combinations are for a particular combination, The visual color also becomes the same color. In addition, "Fluorescent group" is a general term for a plurality of quantum dot phosphors. The plurality of quantum dot fluorescent systems constituting this are substantially identical. however, A plurality of quantum dot phosphors are essentially the same finger, Expected by material, Authors of the same shape, These are not strictly limited to the same, And agree to the production error, Strictly speaking, it is not the same situation. In addition, "Quantum point phosphor" means a semiconductor material. Ultrafine particles with extremely small particle size were found for quantum size effects. The size of the quantum dot phosphor is measured by the particle size. Quantum -10- 200931076 Point phosphor does not refer to a complete sphere, It can also be a big ball or a big cube or other shape. E.g, For the case where the quantum dot phosphor has a particle diameter of 6 nm, It refers to the minimum diameter of 6 nm for the spherical surface of the quantum dot phosphor. In addition, For the particle size system, it may also contain manufacturing errors (5). Then, The particle diameter of each quantum dot phosphor constituting the phosphor group of the quantum dot phosphor is (6 ± (5) nm). As a wavelength converter, The structure of a 0 flat plate formed by resin molding or the like is exemplified. Forming a film-like structure fixed to the substrate by printing, a three-dimensional shape formed on a substrate via mounting, The composition of a container enclosed in a specific shape. The first quantum dot phosphor and the second quantum dot phosphor are composed of a semiconductor material. The semiconductor material constituting the first quantum dot phosphor may be the same as the semiconductor material constituting the second quantum dot phosphor. Or it can be different. As a semiconductor material constituting the first quantum dot phosphor or the second quantum dot phosphor, For example, CdS, CdTe, CdSe, Ο ( Agin ) χΖη ( ux) S, Targeted below, For the case of phosphors, There are no special restrictions, The constituent material of the phosphor is a semiconductor material. The quantum dot fluorescent system corresponds to the absorption of incident light, A fluorescent generator that can be longer than the wavelength of incident light. in particular, An absorption of incident light corresponding to a higher energy of the band gap energy of the quantum dot phosphor, Release a wavelength that will be equivalent to the band gap energy of the quantum dot phosphor, Fluorescence as the peak wavelength (below, Also known as "main fluorescent"). here, The peak wavelength refers to a single quantum dot phosphor, The wavelength of the fluorescence emitted by the maximum transition intensity (frequency). but, Quantum dot phosphors are due to the discovery of quantum size effects -11 - 200931076 ultrafine particles, And corresponding to the change in particle size, Band gap energy (the energy difference between the minimum energy level of the electrons in the conduction band and the maximum energy level of the electrons in the valence band: Forbidden band width) is a change, That is, Even if it is made of the same semiconductor material, The wavelength of the fluorescent light emitted by the change in particle size also changes. In general, The larger the particle size, The band gap energy is small, and the smaller the particle diameter, The band gap energy is large. however, For at least one direction, Not used as a quantized phosphor, E.g, The case of a bulk phosphor having a quantum size effect of 0 is not found, Even if the size changes, The band gap energy system has not changed substantially. In addition, Targeting quantum dots in phosphors, The energy level of the electrons in the valence band and the energy level of the electrons in the conduction band are different from those in the bulk phosphor. In order to obtain the energy level dispersed by the withdrawal of the energy level, The dispersion corresponding to the wavelength distribution of the main fluorescent light becomes small. especially, The higher the particle size of the quantum dot phosphor, the higher the accuracy. The effect is getting bigger. However, The intensity of the main fluorescent light can be controlled by the change in the thickness of the actual effectiveness of the phosphor group (converted to the thickness of the semiconductor crystal). However, hey, The thickness of the actual potency can be determined by the concentration of the quantum dot phosphor in the case where the volume or weight of the dispersion holder is constant. As a technique for producing a quantum dot phosphor having a high-definition particle size control, for example, a size selective photolithography method can be mentioned. For the case where the size is selected by photolithography, the peak wavelength of the fluorescence emitted from the quantum dot phosphor can be Control is performed in units of several nm (errors below 1 nm). Here, for the size selective photoetching method, Briefly explain. The size selective photoetching method refers to a method known in advance, After making a quantum dot phosphor, For the amount of -12-200931076 sub-point phosphors in a dissolved oxygen environment with a wide particle size distribution Irradiate specific monochromatic light. The quantum dot fluorescent system absorbs light having a wide wavelength band above a band gap energy of its own, for a case where the band gap energy is smaller than the energy corresponding to the wavelength of the monochromatic light, It is excited as light. At this time, the composition of the quantum dot phosphor which is excited by light can be made into a light dissolver by appropriately controlling the easy condition. Through its light dissolution, The particle size of the quantum dot phosphor is reduced. The band gap energy of the quantum dot phosphor becomes larger. The reaction is stopped when the band gap energy of the quantum dot phosphor exceeds the energy of the wavelength at which Q should be irradiated. thus, The particle size of the quantum dot phosphor constituting the quantum dot phosphor group, Convergence is a specific particle size depending on the wavelength of the monochromatic light to be irradiated. The emitted light from the wavelength converter includes, for incident light, a wavelength corresponding to the energy of the band gap energy of the first quantum dot phosphor and the band gap energy of the second quantum dot phosphor. The first fluorescent light and the second fluorescent light including at least the band gap energy are included. The visual color of the emitted light is determined by the wavelength distribution of the entire emitted light. however, In the following, Although there are 第 from the first quantum dot phosphor and the second quantum dot phosphor, Each of them emits a fluorescent light different from the first fluorescent light and the second fluorescent light, However, the strength of these components is extremely weak. Not considered. As the visual color of the emitted light, specifically, The case where the visual color determined by the mixing of the first fluorescent light and the second fluorescent light is used may be mentioned. Via the first fluorescent light, The visual color determined by the mixing of the second fluorescent light and the transmitted light (unabsorbed thermal light), In the case of the visual color determined substantially by the first firefly, The case where the visual color is substantially determined by the color mixing of the first fluorescent light and the transmitted light. here, The case where the visual color is substantially determined by the first fluorescent light means It is not limited to the second fire -13- 200931076 Light is not visible light and does not affect the visual color of the emitted light at all. Alternatively, the intensity of the second fluorescent light may be significantly smaller than the intensity of the first fluorescent light. For those who have little influence on the visual color. However, below, The main fluorescent light that will substantially determine the visual color, Also known as "visual color element light", The main fluorescent light that does not affect the visual color is also called "code-specific element light". The dispersion holding system disperses and holds the first quantum dot phosphor and the second quantum dot phosphor which constitute the phosphor group of the first quantum dot phosphor and the phosphor group of the second quantum dot phosphor. here, Decentralized retention means Within a certain range, Closing the first quantum dot luminescence body of the complex number and the second quantum dot phosphor of the plural number, Within its specific scope, Those in which the quantum dot phosphors are mixed and dispersed. As a case of dispersing and holding a quantum dot phosphor, For example, a dispersion holding body made of a solid dispersion medium such as a resin can hold the quantum dot phosphors in a fixed manner. Or via a dispersion holder comprising a sealed container and a dispersion medium enclosing the liquid in the sealed container, The fluidity φ maintains the state of each quantum dot phosphor. As a resin constituting a dispersion retaining body, For example, acrylic resin, Polycarbonate resin, Epoxy resin, etc. In addition, As a dispersion medium for the dispersion holder, For example, an organic solvent such as chloroform can be mentioned. For the wavelength converter in the present invention, When at least the first quantum dot phosphor and the second quantum dot phosphor are contained, at least one type of camp light that is different from the first fluorescent light and the second fluorescent light may be added Quantum dot phosphor. In this case, the fluorescence of the quantum dot phosphor other than the first quantum dot phosphor and the second quantum dot phosphor may be -14-200931076 visual color element light. It can also be a code-specific element light. The semiconductor material constituting the first quantum dot light-emitting body is the same as the semiconductor material constituting the second quantum dot phosphor. It is preferable that the particle diameter of the first quantum dot phosphor is different from the particle diameter of the second quantum dot phosphor. If it is the above composition, Only by using the particle size as a different one, Because it can be in a specific wavelength range, The peak wavelength of the first fluorescent light and the second fluorescent light are substantially continuously made, Therefore, it is possible to easily emit a desired variety of visual colors. In addition, There is no need to manage quantum dot phosphors that maintain a plurality of semiconductor materials, A wavelength converter can be simply fabricated. however, For the particle size as the same, Taking semiconductor materials as different situations, Even as a preparation for a plurality of types of semiconductor materials, The diversity of the visual color of the emitted light is also low. The particle diameter of the first quantum dot phosphor is substantially corresponding to the particle size of a specific visual color. The particle diameter of the second quantum dot phosphor is a particle diameter corresponding to a specific wavelength 〇 of the peak wavelength of the second fluorescent light, which is substantially not overlapped with the peak wavelength of the first fluorescent light. The concentration of the quantum dot phosphor of the wavelength converter is preferably such that the composition of the concentration of the color developed by the first phosphor group is not substantially the same as described above. By using the first fluorescent light as the visual color element light, When the second fluorescent light is used as the code-specific element light, It is simple and sure to make the identification information exist inside. In addition, Since the degree of freedom in selecting the peak wavelength of the second fluorescent light becomes large, The identification information can be diversified. In this case, The identification information is also the information identified by the second fluorescent light. Information that is recognized by both the first fluorescent light and the second fluorescent light. For example, -15- 200931076, As information only recognized by the second fluorescent light, The absolute wavelength of the peak wavelength of the second fluorescent light (for the absolute position in the spectrum), The absolute intensity of the peak wavelength of the second fluorescent light, As information recognized by both the first fluorescent light and the second fluorescent light, The relative wavelength of the peak wavelength of the second fluorescence of the first fluorescence peak wavelength and the like between the first peak wavelength and the peak wavelength of the second fluorescent light, etc., may be mentioned. The relative intensity of the peak wavelength of the second fluorescence of the peak wavelength of the first fluorescence. φ used as the code-specific element light φ The second fluorescent light can also be a identifiable visible range of light. It is also possible to recognize light in a range other than the infrared range or the visible range of the ultraviolet range. however, Even if the first fluorescent light and the second fluorescent light are used as the visual color element light, You can also use the identification information as a person who exists inside. But this can be the case, Identify information as a diversification. It is desirable to further contain the same semiconductor material as the second quantum dot phosphor, 'according to the absorption of incident light, The shortest wavelength of the incident light is longer. Different from the wavelengths of the first fluorescent light and the second fluorescent peak, And generating at least one type of additional quantum dot phosphors of mutually different types of fluorescent light, An additional phosphor group included in at least one type of the species, The particle diameters of at least one type of additional quantum dot phosphor are different from each other. And corresponding to each peak wavelength of at least one type of additional quantum dot phosphor, a particle diameter of a specific wavelength that does not substantially overlap the wavelength distribution of the first fluorescent light, The concentration of each of the quantum dot phosphors of at least one type of the wavelength converter is smaller than the concentration of the first quantum dot phosphor of the wavelength converter. A composition that does not substantially change the concentration of the color developed by the first phosphor group. -16- 200931076 If it is the above composition, By using the first fluorescent light as the visual color element light, At least one type of fluorescent light from at least one type of additional quantum dot fluorescent material is emitted simultaneously with the second fluorescent light (hereinafter, Also known as "additional fluorescence"), When used as a code-specific element light, The case where only the second fluorescent light is used as the code-specific element light, It can make the identification information more diverse. In this case, The identification information may also be information identified by the second fluorescent light and at least one type of additional fluorescent light. Information that is recognized by the first fluorescent light and the second fluorescent light and at least one φ type of additional light-emitting body. As information recognized by the second fluorescent light and at least one type of additional fluorescent material, A combination of absolute wavelengths of these peak-to-peak wavelengths can be exemplified. Through the repeated half width of the equal wavelength distribution, The relative spacing of these peak wavelengths, a combination of relative intervals of these peak wavelengths, Such identification information. For example, if the peak of the first fluorescence is 波长 wavelength or intensity, Plus the elements of identifying information, It is possible to make a variety of identification information as an insider. The additional fluorescence used as the code-specific element light can also be a identifiable visible range of light. It is also possible to distinguish light in a range other than the visible range of the infrared range or the ultraviolet range. however, The visual color element light is the light of the identifiable visible light range. The concentrations of the various types of the second quantum dot phosphor and at least one type of additional quantum phosphor are preferably different from each other. If it is the above composition, The identification information is present in the internal information only by the information related to the wavelength of the second fluorescent light and the additional camping light of at least one type. It can make the identification information more diverse. in particular, a combination of absolute intensity or relative intensity of the second fluorescent light and at least one type of additional fluorescent light, It is added as an element of identification information. -17- 200931076 The second fluorescent light from the second phosphor group and the fluorescent light from at least one type of additional phosphor group are preferably near the peak wavelength of the second fluorescent light. The constituents of the fluorescence generated by the wavelength distribution of the second fluorescent light and the half width are as described above. The half width of the wavelength distribution of the combined light of the second fluorescent light and the fluorescent light from at least one of the additional phosphor groups can be Add to the element that identifies the information. In addition, general, The half width of the fluorescence (second fluorescence) from the one type of the phosphorescent group is a large-shaped wavelength distribution. It can also be synthesized by various combinations of a plurality of types of phosphor groups (second fluorescent light and at least one type of additional fluorescent light group). Even if the wavelength distribution is understood as a resolution by the optical separation, It is difficult to reproduce the combination of a plurality of types of phosphor groups. The concealment of identifying information becomes higher. thus, The accuracy of identifying the wavelength converter of this configuration and the wavelength converter fabricated by the simulation is improved. Two types of light that combine the same visual color as a specific visual color, ❹ is the first visual color element light and the second visual color element light, The particle diameter of the first quantum dot phosphor is a particle diameter corresponding to the wavelength of the light of the first visual color element. The particle diameter of the second quantum dot phosphor is a particle diameter corresponding to the wavelength of the light of the second visual color element. The concentration of the first quantum dot phosphor in the wavelength converter is the concentration corresponding to the intensity of the light of the first visual color element. It is preferable that the concentration of the phosphor of the second quantum dot in the wavelength converter is a concentration corresponding to the intensity of the light of the second visible color element. If it is the above composition, When the first fluorescent light and the second fluorescent light are used as the visual color element light, The identification information can be made to exist in the inside -18- 200931076. In this case, The identification information is information recognized by both the first fluorescent light and the second fluorescent light. As the information recognized by both the first fluorescent light and the second fluorescent light, For example, the absolute wavelengths of these peak wavelengths can be mentioned. Relative wavelength and absolute wavelength, A combination of relative strengths. The first and second fluorescent lights, which are visible color elements, are light of a visible light range that can be recognized. It is desirable to further contain the same semiconductor material as the first quantum dot phosphor. According to the absorption of incident light, The shortest wavelength of the incident light is longer. Q is different from the first fluorescent light and the second fluorescent peak wavelength. And generating at least one type of additional quantum dot phosphors of mutually different types of fluorescent light, An additional group of camps included in at least one of the categories, The particle diameters of at least one type of additional quantum dot phosphor are different from each other. The first quantum dot, the particle size and concentration of the phosphor, The particle size and concentration of the second quantum dot phosphor, And the combination of the particle size and the concentration of the type of the additional quantum dot phosphor of at least one type is the first fluorescent light, The second fluorescent light and the mixed color of the camping light of each of the at least one type of additional quantum dot phosphors, The composition of the same group as the specific visual color is ideal. If it is the above composition, At least one type of additional fluorescent light from at least one type of additional quantum dot phosphor is simultaneously supplied with the first fluorescent light and the second fluorescent light. When used as a visual color element light, When the first fluorescent light and the second fluorescent light are used as the visual color element light, It can make the identification information more diversified. In this case, The identification information is information recognized by the first fluorescent light, the second fluorescent light, and at least one type of additional fluorescent light. As identification information, For example, the absolute wavelengths of these peak wavelengths can be mentioned. Relative wavelength and absolute intensity, A combination of relative strengths. As the visual color element, the additional fluorescence of the light is identifiable. -19- 200931076 The light of the visible light range is recognized. The semiconductor material constituting the first quantum dot phosphor and the semiconductor material constituting the second quantum dot phosphor may be different components. In the above configuration, the peak wavelength of the first fluorescent light and the second fluorescent light can be changed depending on the semiconductor material. Therefore, the desired light of the visual color can be emitted. however, In order to get the desired visual color, The semiconductor material is optimized. ^ The illuminating device according to the present invention is such that at least a portion of the luminescent color, A light-emitting device that emits color using the wavelength converter of the present invention described above is used. The light-emitting device of the present invention includes a light generating unit, And a wavelength conversion unit including at least one of the wavelength converters of the present invention that converts light from the light generating unit into a specific visual color. A light-emitting device that fixes a fixed portion of a relative position between the wavelength conversion unit and the light generating unit. As a light-emitting device, For example, a display device and a lighting device can be cited. In addition, It may also be a composite display device or a composite lighting device in which a plurality of complex light-emitting devices having different visual colors are combined. however, For the case where G is a composite display device or a composite lighting device, a light-emitting device constituting at least a part of such, For example, the light-emitting device of the present invention is preferred. The light-emitting device-based wavelength converter may be of the same configuration as any of the conventional light-emitting devices except for the wavelength converter of the present invention. At least one of the wavelength converting units may be constituted by only a wavelength converting unit including the same wavelength converter. Further, it may be configured to include a plurality of types of wavelength converting units (a first wavelength converting unit and a second wavelength converting unit) including one of two types of wavelength converters having different internal configurations. here, The difference in internal composition means that the wavelength distribution of the emitted light is different. Even in the case of using a wavelength converter of the type 2-20-200931076, The visual colors of the emitted light from the respective wavelength converting sections are the same color. One of the first wavelength conversion unit and the second wavelength conversion unit having different types of wavelength converters, Ideal for those who are represented by a particular graphic or text or symbol. In this case, the illuminating device can also be made aware of the information. It exists in the inside as a whole light-emitting device. More, The light-emitting device of the present invention is a wavelength converter that is included in one of the first wavelength conversion unit and the second wavelength conversion unit, and is a wavelength converter according to the present invention. The wavelength converter included in both the first wavelength conversion unit and the second wavelength conversion unit is It may also be a wavelength converter relating to the present invention. The wavelength conversion unit may have a configuration including at least a wavelength converter. Specifically, A configuration including only a wavelength converter can be cited. a structure comprising a substrate and a wavelength converter formed on the substrate, a structure including a wavelength converter and a light guide disposed on the wavelength converter, It comprises a reflective substrate and a wavelength converter formed on the reflective substrate and a ❹ light guide formed above the wavelength converter. The base system is based on the viewpoint of brightness and visual color adjustment. It is preferable to form it with a material having high transparency. The reflection-based system is based on the brightness of the light, It is preferable to form a material having a high reflectance. Light guiding system formation guides light from the light generating portion to a guided wave path of the wavelength converter, From the viewpoint of brightness and visual color adjustment, It is preferable to form it with a material having high transparency. As the shape of the wavelength converter, For example, a flat plate shape can be cited. Hemisphere, Concave shape. here, For the wavelength converter and the light-emitting device of the present invention, Refer to the drawing and specify it at the same time. -21 - 200931076 [1st embodiment] The wavelength conversion unit of the first embodiment is configured to emit and mix one type of visual color element light and one type of code-specific element light in accordance with the incident light incident. The composition of the emitted light. Fig. 1 is a cross-sectional view schematically showing an example of a configuration of a wavelength converter. Fig. 2 is an explanatory diagram showing an example of a wavelength distribution of light emitted from a wavelength converter qualitatively. For the Q in Figure 2, The fluorescent function that functions as a visual color element light, Expressed in thick solid lines, Fluorescence that functions as a code-specific element light, Expressed in thin solid lines. however, In the following, For various diagrams showing the wavelength distribution of the emitted light from the wavelength converter as a reference, Also as the same. As shown in Figure 1, The wavelength converter includes a plurality of first quantum dot phosphors 1 dispersed and fixed via the dispersion holder 10. And a plurality of second quantum dot phosphors 2. The first quantum dot phosphor 1 is made of a semiconductor material. The particle size is ultrafine particles of dl. The second quantum dot phosphor 2 〇 is formed of the same semiconductor material as the first quantum dot phosphor 1 The particle size is ultrafine particles of d2 which is larger than dl. The concentration of the first quantum dot phosphor 1 is pi, The concentration of the second quantum dot phosphor 2 is relatively small compared to pi P2 射 The emission light from the wavelength converter is as shown in FIG. 2 . The first main fluorescent light L1 containing the phosphor group of the first quantum dot fluorescent body and the second main fluorescent light L2 of the fluorescent body group of the second quantum dot fluorescent body. The first main fluorescent light L 1 has a peak wavelength corresponding to a desired visual color of λ 1 'half width of W1. however, The particle diameter dl of the first quantum dot phosphor 1 is the first main fluorescent -22-200931076. The peak wavelength of L 1 is λ 1 and modulated. however, The concentration Ρ 1 of the first quantum dot phosphor 1 has a desired intensity with respect to the intensity of the peak wavelength of the first main fluorescent light L1. That is, it is modulated to the desired brightness. The second main fluorescent light L2 shows a wavelength distribution isolated from the first main fluorescent light L1, For the wavelength of the visible range, The peak wavelength is λ2 longer than λΐ. The half width is substantially the same as W1 of W1. however, The particle diameter d2 of the second quantum dot phosphor 2 is modulated such that the wavelength distribution of the second main fluorescent light L2 is isolated from the wavelength distribution of the first main fluorescent light L1 0 . In addition, The concentration p2 of the second quantum dot phosphor 2 does not substantially change the visual color of the first main fluorescent light L1. However, in the case of blocking the first main fluorescent light L1, The second main fluorescent light L2, Adjusted to a concentration that can be visually observed. Shooting light from the wavelength converter, By at least blocking the wavelength near λ 1 , However, when the filter such as the wavelength near λ2 is not blocked, the observation is performed. Luminescence corresponding to the wavelength of λ 2 was observed. thus, A wavelength converter that recognizes this form, And other wavelength converters φ that are converted to the same visual color. E.g, By deciding each manufacturer, etc. For each manufacturer, If the particle size of the second quantum dot phosphor 2 is determined, Can be specific to the manufacturer. Even as an imitation of the appearance and visual color of the wavelength converter, It is difficult to imitate the wavelength distribution of the entire emitted light. It can be a specific imitation or original product. For the above, For the use of dedicated filters, Confirming the composition of the wavelength of the second main fluorescent light L2 by identification, It has been explained', but it can also be confirmed by the method of spectroscopy. In addition, Can also be confirmed by identification, However, it can be confirmed by means of a spectroscopic method. E.g, In addition, the concentration of the second quantum dot camping body 2 is lowered. The second main fluorescent light -23- 200931076 L2 is changed to an intensity that cannot be confirmed by identification. Or increase the particle size of the second quantum dot phosphor 2, The peak wavelength of the second main fluorescent light L2, The wavelength of the infrared ray range or the particle diameter of the second quantum dot phosphor 2 is reduced to a wavelength of the ultraviolet ray range. For the above, The absolute wavelength of the peak 値 wavelength of the second main luminescence L2 is used as identification information. However, in the case of confirmation by means of spectroscopy, The interval between the first main fluorescent light L1 and the second main fluorescent light L2 値 0 wavelength may be The absolute intensity of the peak wavelength of the second main fluorescent light L2, The relative intensity of the first main light L1 and the second main fluorescent light L2, As an identification information. In this case, Due to the increase in identification factors, The identification information can be diversified. In addition, As an element that constitutes identification information, It is also possible to set the peak wavelength of the first main fluorescent light to the absolute wavelength of the wavelength L 1 , Added to the identification element. More ground, Can also combine these identification elements, As identification information. In this case, Due to the increase in identification factors, The identification information can be diversified. For the above, For the case where the wavelength distribution of the peak wavelength of the first main fluorescent light L1 and the wavelength distribution of the wavelength of the second main fluorescent light L2 are isolated, Has been explained, However, if the isolation is at least the degree of the peak of the double head is displayed. In this case, For example, it is better to use the analytical method of peak decomposition at the same time as the method of splitting optics. For the above, One type of fluorescence is used as the code-specific element light. But as a code-specific element light, It is also possible to use at least one type of fluorescent light. In this case, The wavelength conversion unit is preferably configured to include a quantum dot phosphor having a particle diameter different from that of the first quantum dot phosphor and the second quantum dot phosphor. If it is constituted for this purpose, As more recognition elements increase, And -24- 200931076 can be compared with the case where one type of code-specific element light is used. The identification information is more diversified. however, For the case of using a plurality of types of code-specific element lights, It is a peak that does not show the double head. The peak-to-peak wavelength of the light of the code-specific element of the plural type is selected as the wavelength close to the wavelength. It is also possible to use the half width or dispersion of the overlapping single peaks as the identifying elements. here, The wavelength conversion unit further includes at least one type of quantum zero-point phosphor group. A description will be given of a configuration in which various quantum dot phosphor groups are used as code-specific elements to function as a variation of the function. Fig. 3 to Fig. 6 are explanatory diagrams showing an example of the wavelength distribution of the light emitted from the wavelength converter of the modification. The wavelength conversion unit (not shown) of the first modification is a phosphor group formed by the phosphor group formed by the first quantum dot phosphor 1 and the second quantum dot phosphor 2, A phosphor group composed of a third quantum dot phosphor (additional quantum dot phosphor). The light exiting system of the wavelength converter from the first variation is as shown in FIG. The first main fluorescent light L1, the second main fluorescent light L2, and the third main fluorescent light L3 are included. The third main fluorescent light L3 displays a wavelength distribution in which the wavelength distribution 'which is substantially isolated from both the first main fluorescent light L1 and the second main fluorescent light L2 is a visible wavelength. The peak wavelength is a relatively long λ3. However, the third quantum dot phosphor is formed of the same semiconductor material as the first quantum dot phosphor 1 or the second quantum dot phosphor 2, The peak wavelength of the third main fluorescent light L3 is λ3 to modulate its particle diameter. Further, the concentration of the third quantum dot phosphor is substantially the same as the intensity at the peak 値 wavelength λ3 of the third main fluorescent light L3 and the intensity at the peak 値 wavelength Α2 of the second main fluorescent light L2. -25- 200931076 Adjustment, The third main fluorescent light L3 functions as a code-specific element light. The wavelength conversion unit of the first modification is compared with the wavelength conversion unit of the first embodiment. Due to the increase in the elements that constitute identification information, And identifying information is complicated, Imitation and so on become difficult. In addition, The emitted light from the wavelength converter, By at least blocking the wavelength near λ 1 , However, when observing the filters of wavelengths in the vicinity of 2 and λ3, the observation is performed. It is observed that the luminescence corresponding to the wavelength of λ2 is combined with the luminescence 0 light corresponding to the wavelength of λ3, In addition, By at least blocking λΐ and; The wavelength near 12, However, when observing a filter such as a wavelength near the Λ3, Observed to be observed; 13 wavelengths of light, On the other hand, the accuracy of the wavelength conversion unit and the other wavelength conversion unit of the first modification is improved. The wavelength conversion unit (not shown) of the second modification is a phosphor group formed by the phosphor group formed by the first quantum dot phosphor 1 and the second quantum dot phosphor 2, a phosphor group comprising a third quantum dot phosphor (additional quantum dot phosphor), And a phosphor group formed by a fourth quantum dot phosphor (added quantum dot 萤 phosphor). The light output from the wavelength converter of the second variation is as shown in FIG. The first main fluorescent light L1 and the second main fluorescent light L2, the third main fluorescent light L3, and the fourth main fluorescent light L4 are included. The fourth main fluorescent light L4 displays a wavelength distribution substantially separated from each of the first main fluorescent light L1 to the third main fluorescent light L3'. For the wavelength of the visible range, The peak wavelength is λ4 longer than λ 3 . however, The fourth quantum dot phosphor is formed by the semiconductor material of the first quantum dot phosphor 1 to the third quantum dot phosphor 2, and the peak wavelength of the fourth main fluorescent light L4 is λ 4 . Particle size. In addition, The concentration of each of the third quantum dot phosphors and the concentration of the fourth quantum dot phosphor do not substantially change the visual color of the first main fluorescent light L1 from -26 to 200931076. But in the case of light L1, The third main fluorescent light L3 and the third is the concentration that can be visually observed. however, : The concentration of the body and the concentration of the fourth quantum dot phosphor are different from the concentration of the body. also, For different concentrations. L3' and the fourth main luminescence L4 are code-specific elements. The wavelength conversion unit of the second modification is compared with the above-described 0-length conversion unit. The complexity of the elements that make up the identification information is complicated. Imitation and so on become more difficult. In addition, The light emitted by the transform unit, Use 3 or more types of 泸 to 3 stages of color change, Further, the accuracy of the second variation and the other wavelength conversion unit is further improved. The wavelength conversion unit of the third variation (the phosphor group and the second amount of the quantum dot phosphor 1 are not shown). a group of fluorescent bodies, a phosphor group comprising a fifth quantum dot phosphor (Q body), And the phosphor group formed by the sixth quantum dot fluorescent phosphor. The emitted light from the third variation is shown in Figure 5. The first main fluorescent light L2' and the fifth main fluorescent light L5 and the sixth main fluorescent light L6 are included. < and the sixth main fluorescent light L6 is a wavelength distribution, peaks fj1 and λ6, which are sequentially separated from each of the second main fluorescent second main fluorescent light L2'. However, each of the fifth quantum dot phosphors and the first and first quantum dot phosphors 1 or the second quantum dot fluorescent material is formed, and the fifth main fluorescent light L5 and the sixth quantum are blocked by the first main fluorescent light. In the third main fluorescent light, the third main fluorescent light, the third quantum dot fluorescent, and the third main fluorescent light are used to function. In the wave of the first variation, the identification information is increased by a wavelength conversion unit that can be observed from a wavelength light sheet or the like. The I-wavelength of the half-width of the quantum dot phosphor added to the first sub-point phosphor 2 (the wavelength converter L1 of the quantum dot and the second main fluorescent light L5 L2') Each of the peaks of the same half-point phosphor of the λ 5 6 quantum dot phosphor body 2-27-200931076 The wavelength of the 値 5 6 is modulated by λ5 and λ6. In addition, the fifth quantum dot phosphor The concentration and the concentration of the sixth quantum dot phosphor are based on the intensity at the peak 値 wavelength λ5 of the fifth main luminescence L5 and the intensity at the peak 値 wavelength λ6 at the sixth main luminescence L6. The intensity of the peak wavelength λ 2 of the main fluorescent light L2 is substantially the same, and each of the fifth main fluorescent light L5 and the sixth main fluorescent light L6 functions as a code-specific element light. The second main fluorescent light L2', the Q-synthesis light LA of the fifth main luminescence L5 and the sixth main luminescence L6 is substantially in the shape of a table. The wavelength conversion unit of the third modification is an identification element constituting the identification information, and the width WA can be used. In addition, such a shape can also be realized by a combination of various phosphor groups, and the internal structure is the same. In the case of the reproduction, it is extremely difficult, and it is extremely difficult to imitate, etc. Further, by using a plurality of types of filters or the like by using the light emitted from the wavelength conversion unit, it is possible to observe a multi-stage color change. The accuracy of the wavelength conversion unit of the third variation and the other wavelength conversion unit is improved. 波长 The wavelength conversion unit (not shown) of the fourth modification is added to the first quantum dot phosphor 1 The phosphor group formed by the phosphor group and the second quantum dot phosphor 2 includes a phosphor group formed by a seventh quantum dot phosphor (added quantum dot phosphor), and a phosphor group formed by a quantum dot phosphor (additional quantum dot phosphor). The emission light from the wavelength converter of the fourth modification includes the first main fluorescent light L1 and the first 2 main fluorescent light L2 and seventh main fluorescent light L7 and eighth main fluorescent light L8. However, the seventh main fluorescent light 7 and the eighth main light emitting L8 are wavelengths of the visible range, and the peak wavelengths are each λ7 and Λ 9. However, each of the seventh quantum dot phosphors and the eighth quantum-28-200931076 point phosphor are the first quantum dot phosphor 1 or 2 Quantum dot phosphor 2 is formed by the same semiconductor material, and the peak wavelengths of the seventh main fluorescent L7 and the eighth quantum dot phosphor are λ7 and Λ7, respectively, and the particle size is modulated. The concentration of the spot phosphor and the concentration of the eighth quantum dot phosphor are not substantially discolored by the visual color of the first main fluorescent light L1, but the seventh main fluorescent L1 is blocked. The main fluorescent light L7 and the eighth main fluorescent light L8 are adjusted to have a concentration which can be visually observed, and the wavelength distribution of the synthesized light LB of the second main fluorescent light 0 L2, the seventh main fluorescent light L7, and the eighth main fluorescent light L8 It is adjusted in the shape of a peak of the half width WB different from the first main fluorescent light L1. Each of the seventh main fluorescent light L7 and the eighth main fluorescent light L8 functions as code-specific element light. The wavelength conversion unit of the fourth modification can be used as an identification element constituting the identification information. In addition, the peak shape of the combined light can be realized by a combination of various phosphor groups, and even if the wavelength distribution of the light emitted from the wavelength conversion unit is analyzed, it is adjusted to be a pre-synthesis The width of the light is also difficult to detect due to flaws, and it is difficult to reproduce the same internal structure, and it is extremely difficult to imitate. In addition, by using a plurality of types of filters or the like, the multi-stage color change can be observed by the light emitted from the wavelength conversion unit, and the wavelength conversion unit and the other wavelength conversion unit of the fourth variation are recognized. The accuracy of the device is improved. As described above, in the interpretation of the identification information, as shown in FIG. 1, the case where the fluorescence is emitted from the side opposite to the incident side of the incident light has been described. However, in the present invention, A part of the incident light is emitted through the wavelength conversion unit, and the transmitted light is used together with the first fluorescent light and the second -29-200931076 fluorescent light. In addition, although the case where the light emitted from the side opposite to the incident side of the incident light is used has been described, the first fluorescent light and the second fluorescent light may not be emitted in the same direction as the propagation direction of the incident light. On the other hand, as shown in FIG. 7, the light is emitted from the same side as the incident side of the incident light (reflection utilization). Further, as shown in Fig. 8, the reflecting plate 20 may be provided so that the light emitted on the side opposite to the incident side is emitted on the same side as the incident side. However, in the case of using the wavelength conversion unit for the light emission control of the display device or the illumination device, the use of the wavelength conversion unit is mainly used by the transmission use pattern, and when the signage or the like is used, or the wavelength conversion unit is formed as part of the product, It is mainly used by reflection utilization form. [Embodiment of the second embodiment] The wavelength conversion unit of the second embodiment is configured to emit an emission pupil of a specific visual color of two kinds of visual color element lights in accordance with incidence of incident light. Fig. 9 is an explanatory view schematically showing an example of a wavelength distribution of light emitted from a wavelength converter. However, the wavelength conversion unit of the present embodiment is similar to that of the first embodiment in terms of mode, and also refers to Fig. 1. As shown in Fig. 1, the wavelength conversion unit of the present embodiment includes a plurality of first quantum dot phosphors dispersed and fixed by the dispersion holding body 10, and a plurality of second quantum dot phosphors 2. The first quantum dot phosphor 1 is made of a semiconductor material and has a particle size of ultrafine particles of d3. The second quantum dot phosphor 2 is made of the same semiconductor material as the first quantum dot phosphor 1 -30-200931076, and the particle size is ultrafine particles of d4 which is larger than d3. The concentration of the first quantum dot phosphor 1 is P3, and the concentration of the second quantum dot phosphor 2 is p4. The emitted light from the wavelength converter is as shown in FIG. 9 'the first main fluorescent light L11 containing the phosphor group from the first quantum dot fluorescent body and the phosphor group from the second quantum dot fluorescent body. The second main fluorescent light L12. The first main fluorescence L11 is the peak wavelength of λ 11, which is the wavelength of the visible range, and the half width is W11. The second main fluorescent light L12 displays a wavelength division 0 which is isolated from the first main fluorescent light L11, and is a wavelength of the visible range. The peak wavelength is λ12 which is longer than λΐΐ, and the half width is W12 which is substantially the same as W11. The particle diameter d3 of the first quantum dot phosphor 1 and the particle diameter d4 of the second quantum dot phosphor 2 are adjusted to be combinations capable of emitting a desired visual color. Further, the relative density of the particle diameter concentration P 3 of the first quantum dot phosphor 1 and the concentration p 34 of the second quantum dot phosphor 2 is adjusted to be a combination of a desired visible color. Further, the particle size concentration P3 of the first quantum dot phosphor 1 and the concentration of the second quantum dot phosphor 2! The absolute value of 〇 3 4 is adjusted to the desired brightness. However, the particle diameters of the first quantum dot phosphor 1 and the second quantum dot phosphor 2 are modulated such that the wavelength distribution of the first main fluorescent light L11 is separated from the wavelength distribution of the second main fluorescent light L12. The visual color of the emitted light from the wavelength converter is a color mixture of the color of the first main fluorescent light L11 and the color of the second main fluorescent light L12. However, the color of the mixed color is the same as that of the phosphor group formed by the quantum dot camping body of a type having a specific wavelength AC as the peak-to-peak wavelength at a specific concentration. . When the light emitted from the wavelength converter is observed by blocking a filter having a wavelength near λ ΐΐ or A12, light emission corresponding to a wavelength of -31 - 200931076 λ ΐΐ or λ 12 is observed. Thereby, the wavelength converting unit of the present embodiment can be recognized, and the other wavelength converting unit that converts to the same visual color can be used. For example, by determining the particle size of the first quantum dot phosphor 1 and the second quantum dot phosphor 2 for each manufacturer by determining each manufacturer or the like, the peak wavelength is clearly determined, so that the manufacturer can be specified. By. Further, even if the appearance and the visual color of the wavelength converter are simulated, it is difficult to imitate the entire wavelength distribution of the emitted light, and the imitation product or the original product can be specified. In the above, the configuration in which the wavelength of the first main fluorescent light L11 or the second main fluorescent light L12 is confirmed by identification using a dedicated filter has been described. However, it may be confirmed by a method of separating the optical fibers. . In the above, the absolute wavelength of the peak-to-peak wavelength of the first main fluorescent light L11 or the second main fluorescent light L12 is used as the identification information, but the first main fluorescent light L 1 1 and the second main fluorescent light L may be used. The combination of the peak wavelengths of 1 2, or such intervals, the absolute intensity of the peak wavelength of the first main fluorescent light L11 or the second main fluorescent light L12, and the first main fluorescent light L11 and the second main fluorescent light L12 The relative intensity of the peak wavelength 〇 is used as the identification information. In this case, the identification information can be diversified because the identification element is increased. In addition, the combination of these identification elements can also be used as identification information. In this case, the identification information can be more diversified because the identification elements are increased. In the above, the case where the wavelength distribution of the peak 値 wavelength of the first main luminescence L11 and the wavelength distribution of the wavelength of the second main luminescence L12 are separated as described above has been described, but if the isolation is at least double-headed The degree of peaks is good. In this case, it is better to use the analytical method of peak decomposition in conjunction with the method of splitting optics. -32- 200931076 In the above, the case where two types of fluorescent light (the first main fluorescent light L11 and the second main fluorescent light L12) are used as the visual color element light has been described, but as a visual color element light It is also possible to use at least one type of fluorescent light. In this case, the wavelength converter is a combination of the three types of particle diameters including the configuration of the quantum dot phosphors having different particle diameters of the i-th quantum dot phosphor 1 and the second quantum dot phosphor 2; And the combination of these three types of concentrations 'colors the desired visual color. According to this configuration, the identification information is increased, and the identification information can be diversified more than the case where the two types of visual color element light are used. However, when a plurality of kinds of visual color element lights are used, at least two of the visual color element lights are not peaks of double heads, and the peak wavelengths of the plurality of types of visual color element lights are close to the wavelength. The particle size may be selected, and the half width or dispersion of the overlapping single peaks may be used as the identification element. Here, the wavelength conversion unit further includes at least one type of quantum dot phosphor group, and a configuration in which these various quantum dot phosphor groups exhibit a change in function as a visual color element Φ light will be described. Fig. 1 is a diagram showing an example of a wavelength distribution of emitted light from a wavelength converter of a variation. The wavelength conversion unit (not shown) of the variation is a phosphor group formed by the phosphor group formed by the first quantum dot phosphor 1 and the second quantum dot phosphor 2, and includes the first A group of phosphors formed by a quantum dot phosphor ([additional quantum dot phosphor]). As shown in Fig. 10, the light output from the wavelength converter of the variation includes the first main fluorescent LU, the second main fluorescent light L12, and the third main fluorescent light L13. The third main fluorescent light L13 displays a wavelength distribution substantially separated from both the first main fluorescent light L11 and the second main light L12, and -33-200931076 is a wavelength of the visible range, and the peak wavelength is longer than 12 Λ13. However, the third quantum dot phosphor is modulated by the semiconductor material of the first quantum dot phosphor 1 or the second quantum dot phosphor 2, and the peak wavelength of the third main fluorescent light L13 is λ3. Its particle size. The concentration of the first quantum dot phosphor, the concentration of the second quantum dot phosphor, and the concentration of the third quantum dot phosphor are the first main fluorescent light L11, the second main fluorescent light L12, and the third main fluorescent light L13. The color mixture of the hair color is modulated in a desired visual color. Then, the third main flash φ light L13 also functions as a visual color element light. However, the visual color of the color mixture is the same as that of the main fluorescent LD in the case of a phosphor group formed by a quantum dot phosphor having a specific wavelength as a peak-to-peak wavelength at a specific concentration. In the wavelength conversion unit of the second embodiment, the wavelength conversion unit of the second embodiment is more complicated because the elements constituting the identification information are increased, and the identification information is complicated. In addition, when the light emitted from the wavelength converter is blocked by at least the wavelength near λΐΐ, but the filter of the wavelength near λ12 and Λ13 is not blocked, the composite is observed to correspond to λ12. When the wavelength is illuminating and the illuminating light of the wavelength corresponding to λ13 is blocked, the wavelength of the vicinity of λ ΐΐ and the wavelength of 1 2 is blocked, but the filter of the wavelength near λ 1 3 is not blocked, and the observation is performed. The illuminance corresponding to the wavelength of λ 3 is observed, and the accuracy of the wavelength converter that recognizes the variation and the other wavelength converters that are colored by the same visual color is improved. [Embodiment of the third embodiment] The light-emitting device of the third embodiment includes a unit light-emitting element of a plurality of -34 to 200931076 which are formed in a matrix. Fig. 11 is a cross-sectional view showing an example of a configuration of a unit light-emitting element of a light-emitting device in a film type. As shown in FIG. 11, the unit light-emitting element includes an excitation light source unit ([light generation unit]), and a wavelength conversion portion that is provided on the emission side of the excitation light from the excitation light source, and the wavelength converter 112 is formed on the transparent substrate 111. 110, and fixing such fixed parts (not shown). However, the configuration of the wavelength converter 112 is the same as that of the case shown in Fig. 1. 0. The light-emitting device of the present embodiment emits light into a specific visual color by a combination of the first fluorescent light and the second fluorescent light having different peak wavelengths, as in the first embodiment and the second embodiment described above. Explain that the information can be buried. Thereby, the identification of the manufacturer or the determination of the true meaning can be performed. The wavelength converter 112 may be formed to be isolated from each unit of the light-emitting elements, or may be formed by a plurality of unit light-emitting elements, and may be formed in a plurality of units, or may be formed in a matrix. The entire unit light-emitting elements are shared by the entire range and formed over the entire range. 〇 In the above, the case where the wavelength conversion unit of the present invention is used for all of the plurality of unit light-emitting elements has been described, but it is also applicable to a part of the plurality of unit light-emitting elements. Further, although the case where one type of wavelength conversion unit is used as described above has been described, substantially the same visual color is generated, but the wavelength distribution may be at least two types of wavelength conversion units. Composition. For example, the plurality of unit light-emitting elements are the first unit light-emitting element group ([first wavelength conversion unit]) that emits light by the first wavelength conversion unit, and the first wavelength conversion unit is substantially generated. The light of the same visual color is formed by the second unit light-emitting element group ([second wavelength conversion unit]) which emits light by the second wavelength conversion unit, and the wave-35-200931076 long distribution One of the one-unit light-emitting element group and the second-unit light-emitting element group is configured to correspond to a specific pattern or a pattern of characters or symbols. According to this configuration, in a state in which the light-emitting device is normally operated, the light emission from the light-emitting device is observed by a specific filter, and the visual color of the first unit light-emitting element group and the second unit light-emitting element group are visually observed. If the color is different, the graphic or text or symbol is displayed. In this way, by using the relative change in the light emission of the plurality of types of wavelength converting means, the identification information of the light-emitting device can be used as the entire light-emitting device. However, in the case of a configuration including a plurality of types of wavelength converting units, at least one type of wavelength converting unit is preferably the wavelength converting unit of the present invention. [Fourth Embodiment] The composite light-emitting device of the fourth embodiment includes a plurality of unit light-emitting elements. Fig. 12 is a perspective view schematically showing an example of a composite light-emitting device, and Fig. 13 is an exploded perspective view schematically showing an example of a unit light-emitting device. As shown in FIG. 12, the composite light-emitting device 200 includes a base frame 201 and a plurality of unit light-emitting devices 211-219 assembled in the base frame 201. The unit light-emitting devices 211 to 2 19 have different light-emitting areas or illuminating colors, but the internal structures are substantially the same, and only the unit light-emitting device 211 will be described in detail below. The unit light-emitting device 211 includes a housing 221, an excitation light source 222 ([light generation unit]), and a light diffusion plate 23 1 disposed on the emission side of the excitation light from the excitation light source 222, and a light diffusion-36 layer. - 200931076 Wavelength conversion unit 23 2 on the board 23 1 ([wavelength conversion unit]), and a registration board 23 3 ' laminated on the wavelength conversion unit 23 1 and a protection board 234 laminated on the registration board 233 And the frame 221' fixes the light diffusing plate 231, the wavelength converting unit 232, the registered plate 23 3, and the fixing frame 223 of the protective plate 234 ([fixed portion]). The wavelength converter 23 2 is the wavelength conversion unit of the present invention which is the same as the case shown in Fig. 1. However, the wavelength conversion unit for the unit light-emitting devices 211 to 219 is also a wavelength conversion unit according to the present invention. In the case of the composite light-emitting device 200, the composite light-emitting device 200 is identified by comparing the color change of the specific filter for each of the plurality of unit light-emitting devices 211 to 219 or the component analysis of the light-emitting color in comparison with the case of a single light-emitting device. The accuracy of the composite light-emitting device is further improved. Further, for example, in the case where the unit light-emitting devices of the plurality of unit light-emitting devices 21 1 to 219 are configured to emit color by the same visual color, the wavelength converter for the unit light-emitting device is used. When the internal enthalpy of the 232 is different, the color of the unit illuminating device may be different depending on the normal illuminating condition and the observation by the specific filter. Thereby, the composite light-emitting device 200 and other composite light-emitting devices can be easily recognized. In the above description, the configuration in which the unit light-emitting device 211 includes one wavelength converter 232 has been described. However, as shown in FIG. 14, the wavelength converter 232 may be replaced as the light-diffusing plate 23 1 and Between the registration plates 233, the wavelength conversion unit 235 and the wavelength conversion unit 236' are colored by the wavelength conversion unit 253 and the wavelength conversion unit 236 in the same visual color as the wavelength -37-200931076 inverter 232. The constituents. Further, as shown in the cross-sectional view of FIG. 15 and the cross-sectional view of FIG. 16 in the AA cross section of FIG. 15, the wavelength converter 232 may be included as the first visual color including the specific color formed on the substrate 232C. The wavelength conversion film 232A (f first wavelength conversion unit) and the second wavelength conversion film 23 2B (f second wavelength conversion unit) that generates the same character pattern as the first wavelength conversion film 232A and forms a specific character pattern. The constituent of the wavelength converter 232'. In the case where the wavelength converter 232' is provided, the unit-emitting Q-light device 211 emits light in the same visual color when it is normally illuminated, and is observed by a specific filter. In the case where the color development by the first wavelength conversion film 232A and the color development by the second wavelength conversion film 232B are different, a specific pattern (IDEC in the drawing) appears. Thereby, the composite light-emitting device 200 and other composite light-emitting devices can be easily recognized. Further, in each of the above-described embodiments, the incident light is substantially absorbed by various quantum dot phosphors, and the transmitted light is substantially not generated. However, the present invention can also be described. A configuration in which a part of incident light is emitted as transmitted light. In this case, in the case where the incident light is in the visible range of light, the transmitted light system functions as the visual color element light, and when the incident light is light outside the visible range, the transmitted light system functions as a code-specific element light. By. In the case where the light transmission system functions as a visual color element light, the influence of these effects is considered to determine the particle size or concentration of various quantum dot phosphors. Here, in the case of the wavelength converter in which the fluorescence shown in Fig. 2 and Fig. 9 is emitted, a case where a part of the incident light is emitted as the visual color element light will be described. Figs. 17 and 18 are graphs qualitatively showing the wavelength distribution of the light emitted from the wavelength converter when a part of the incident light functions as the visual color element light. As shown in FIG. 17 and FIG. 18, the peak-to-peak wavelength is the incident light L0 of the wavelength λ 0 in the visible range, and the light-emitting intensity of the transmitted light L0' that is not absorbed by the wavelength converter is When the degree of change in the color light of the light L1 or the main fluorescent light L11 is large, the transmitted light L0 functions as the visual color element light Q. That is, the visual color of the light emitted from the wavelength converter is determined by the color mixture of the color of the transmitted light L0' and the color of the main fluorescent light L1 as shown in Fig. 17, for Fig. 18 The case shown is determined by the color of the transmitted light L0' and the color mixture of the main fluorescent light L11 and the color of the main light L1 2 . In addition, in each of the above-described embodiments, a configuration in which one type of visual color element light and at least one type of code-dedicated element light are used or a configuration in which at least one type of visual color element light is used has been described, but the configuration has been described. In the present invention, a configuration that can be combined as such a composition can be used as a component that uses at least one type of visual color element light and at least one type of code-specific element light. Further, in the above embodiments, the quantum dot phosphor in which the visible color element light or the code-dedicated element light is emitted is formed of the same type of semiconductor material, but in the present invention, the release is performed. At least one type of quantum dot phosphor group of the visible color element light or the code-specific element light may be composed of a semiconductor material different from the semiconductor material constituting the other quantum dot phosphor. -39- 200931076 [Industrial Applicability] The present invention is applicable to a wavelength converter or a display device using a wavelength converter, in particular, a simple information such as an operating state or a dangerous state of an industrial machine is notified to an operation. A display device for industrial use or a lighting device using a wavelength converter. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a cross-sectional view schematically showing an example of a wavelength converter according to a first embodiment. Fig. 2 is a graph showing an example of a wavelength distribution of emitted light from the wavelength converter of the first embodiment. Fig. 3 is a graph showing an example of a wavelength distribution of emitted light from the wavelength converter of the first modification. Fig. 4 is a graph showing an example of a wavelength distribution of the light emitted from the Q-switch of the wavelength converter of the second modification. Fig. 5 is a graph showing an example of a wavelength distribution of emitted light from the wavelength converter of the third modification. Fig. 6 is a graph showing an example of a wavelength distribution of emitted light from the wavelength converter of the fourth modification. Fig. 7 is a cross-sectional view schematically showing another example of the utilization form of the wavelength converter. Fig. 8 is a cross-sectional view schematically showing another example of the utilization form of the wavelength converter. -40- 200931076 Fig. 9 is a graph showing an example of a wavelength distribution of emitted light from the wavelength converter of the second embodiment. Fig. 10 is a graph showing another example of the wavelength distribution of the light emitted from the wavelength converter of the second embodiment. Fig. 11 is a cross-sectional view schematically showing an example of the unit light-emitting elements of the light-emitting device of the third embodiment. Fig. 12 is a perspective view schematically showing an example of the composite light-emitting device u of the fourth embodiment. Fig. 13 is an exploded perspective view schematically showing an example of the unit light-emitting device of the fourth embodiment. Fig. 14 is an exploded perspective view schematically showing another example of the unit light-emitting device of the fourth embodiment. Fig. 15 is a bottom view schematically showing another example of the wavelength converter of the unit light-emitting device of the fourth embodiment. Fig. 16 is a cross-sectional view schematically showing another example of the wavelength converter of the unit light-emitting device of the fourth embodiment. Fig. 17 is a graph showing another example of the light emitted from the unit light-emitting device of the fourth embodiment qualitatively. Fig. 18 is a chart showing another example of the light emitted from the unit light-emitting device of the fourth embodiment qualitatively. [Description of main component symbols] 1: First quantum dot phosphor 2: Second quantum dot phosphor -41 - 200931076
I 〇 :分散保持體 100 :激發光源 II 〇 :波長變換部 1 1 1 :透明基板 1 1 2 :波長變換器 -42I 〇 : dispersion holding body 100 : excitation light source II 〇 : wavelength conversion unit 1 1 1 : transparent substrate 1 1 2 : wavelength converter - 42