!333574 九、發明說明： . 【發明所屬之技術領域】 本發明是有關於一種液晶顯示器，且特別是有關於 種高亮度之液晶顯示器。 【先前技術】BACKGROUND OF THE INVENTION 1. Field of the Invention This invention relates to a liquid crystal display, and more particularly to a high brightness liquid crystal display. [Prior Art]
近年來光電相關技術不斷推陳出新，加上數位化時代 的到來，進而推動了液晶顯示器市場的蓬勃發展。液晶顯 示器（Liquid Crystal Displayer ; LCD)具有高晝質、體積小、 重量輕、低電壓驅動、低消耗功率及應用範圍廣^優點， 因此被廣泛地應用於可攜式電視、行動電話、筆記型電腦 以及桌上錢示料，;肖費性電子或電腦產品，並逐漸取代 陰極射線管（Cathode Ray Tube ; CRT)成為顯示器的主流。 有赛於液晶本身並不會發光，因此需要使用背光^且 來供應光源，才能達到顯示效果。傳統的液晶顯示哭大部In recent years, optoelectronic related technologies have been continuously introduced, and the arrival of the digital era has promoted the vigorous development of the liquid crystal display market. Liquid crystal display (LCD) is widely used in portable TVs, mobile phones, and notebooks because of its high quality, small size, light weight, low voltage drive, low power consumption, and wide range of applications. Computers and money on the table, Xiao Fei electronic or computer products, and gradually replaced the cathode ray tube (CRT) became the mainstream of the display. There is no competition in the LCD itself, so you need to use the backlight ^ to supply the light source to achieve the display effect. Traditional LCD display crying most
，為背光dH㈣型液晶顯示器，主要包括前端的液晶 顯不面板以及後端的背光模組。 液晶顯示器的亮度是設計上重要的考量項目之一，傳 統上，提高液晶顯示器之亮度的方法不外乎是增加開口率 或是在背光模組中使用增亮膜H料用增加開口率 的方式來提高液晶顯示器的亮度時，不僅會提高製程的難 度’同時也會有增加成本負擔之問題。但是，若 組中使用多張光學膜片來提高亮度時，又會衍生出直他的 問題。例如’當光線在傳遞的過程中，光線不僅會被這此 6 1333574 光學膜片部分吸收而降低了.光線的使用率之外，更會因使 用多張光學膜片而造成材料與組裝成本的負擔。再者，這 些光學膜片更可能會在進行信賴性測試時，造成光學膜片 之間的括擦毁損，進而增加成本的負擔。此外，倘若這些 光學膜片配置不當時，則容易產生干涉條紋，發生疊紋效 應（moire effect) ’而造成視覺上的缺陷。 有鑑於此，美國專利第6,421，1〇5號提出一種改善上述 缺點之方法，其係於液晶顯示面板十之上玻璃基板的表面 上製作微透鏡（micro lens)陣列，利用微透鏡的曲面結構來 提高液晶顯示器之亮度。然而，此方法之最大難處在於， 由於微透鏡之尺寸大小係微米級以下之尺寸，且其表面鲈 構為曲面結構，所以在製作上不容易控制。再者，因受限 於微透鏡之尺寸大小與結構’所以無法再藉由增加微$鏡 之曲面結構的曲度來更加增強液晶顯示器之亮度。 因此，如何在降低成本負擔的情況下，且能同時不增 加製程控制的難度，進而提高液晶顯示器的亮度，為目前 研發的重點之一。 【發明内容】 足以 因此本發明的目的就是在提供一種液晶顯示器 產生下述目的其中至少其—。 ° 本發明的目的就是在提供一種液晶顯示器，可用 少因遮光區而產生之光損耗，進而提高液晶顯 减 本發明的另-目的是在提供一種液晶顯示器；: 7 丄功374 地降低暗態漏光的現象，以.增加液晶顯示器之對比。 小f發明的又一目的是在提供一種液晶顯示器，可以減 J增壳膜之使用數量，進而降低成本負擔。It is a backlight dH (four) type liquid crystal display, which mainly includes a liquid crystal display panel at the front end and a backlight module at the rear end. The brightness of liquid crystal displays is one of the important considerations in design. Traditionally, the way to increase the brightness of liquid crystal displays is to increase the aperture ratio or to increase the aperture ratio by using a brightness enhancement film in the backlight module. When the brightness of the liquid crystal display is increased, not only the difficulty of the process will be increased, but also the problem of increasing the cost burden. However, if multiple optical films are used in the group to increase the brightness, there will be a problem with straightness. For example, when light is transmitted, the light is not only absorbed by the 6 1333574 optical film, but also reduced by the use of light. It also causes material and assembly costs due to the use of multiple optical films. burden. Moreover, these optical films are more likely to cause damage to the optical film during the reliability test, thereby increasing the cost burden. Further, if these optical films are not properly arranged, interference fringes are likely to occur, and a moire effect is caused to cause visual defects. In view of the above, a method for improving the above disadvantages is proposed in U.S. Patent No. 6,421,1,5, which is to form a microlens array on the surface of a glass substrate above the liquid crystal display panel, using a curved surface structure of the microlens. To improve the brightness of the LCD. However, the biggest difficulty of this method is that since the size of the microlens is a size below the micrometer level and the surface structure is a curved surface structure, it is not easy to control in production. Moreover, since it is limited by the size and structure of the microlens, it is no longer possible to enhance the brightness of the liquid crystal display by increasing the curvature of the curved surface structure of the micro mirror. Therefore, how to reduce the cost burden and not increase the difficulty of process control at the same time, and thus improve the brightness of the liquid crystal display, is one of the current research and development priorities. SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a liquid crystal display that produces at least the following objects. The object of the present invention is to provide a liquid crystal display which can reduce the light loss caused by the light-shielding region and thereby improve the liquid crystal display. The other object of the present invention is to provide a liquid crystal display; 7 丄 374 to reduce the dark state The phenomenon of light leakage increases the contrast of liquid crystal displays. A further object of the invention is to provide a liquid crystal display which can reduce the number of use of the shell-increasing film, thereby reducing the cost burden.
根據本發明之上述目的之中至少其一’提出一種液晶 .‘、、員示器。上述之液晶顯示器包含具有光出射面之背光模 ’且、问分子膜層以及液晶顯示面板。其中，高分子膜層係 «又置於月光模組之光出射面之一側。高分子膜層具有複數 個高折射率區與複數個低折射率區，且高折射率區與低折 射率區可以父錯设置。液晶顯示面板係設置於高分子獏層 之上，且具有複數個可透光區與複數個遮光區，高折射率 區係搭配可透光區而設置，可透光區係位於高分子膜層中 U折射率區之上方。其中’當光線穿過高分子膜層中之 阿折射率區且到達高折射率與低折射率區之介面上時，高 折射率與低折射率區之介面上會形成反射現象，而將光: 反射至該液晶顯示面板中之可透光區，進而提高液晶顯示 器之亮度。因高分子膜層是一具有聚光效果之聚光膜 依照本發明-較佳實施例，上述之高分子膜層之高折 射率區之折射率係介於1.45至1.80之間。 依照本發明-較佳實施例，上述之高分子膜層之低折 射率區之折射率係介於1_25至1.60之間。 依…本土月較佳貫施例，高分子膜層之厚度係介於5 /zm至3GG"m之間’更佳係介於⑽心至之間。 因此，本發明係用光線在不同折射率的介質之介面上 1333574 g滿足折射疋律（Snell.’s Law )’讓入射光通過不同折射率 的介質之介面上時’產生反射現象而將光線反射至液晶顯 不面板之可透光區中，以減少因經過遮光區之光線損耗， 進而增加光線的使用率，且同時提高液錢㈣的亮度。 再者，應用本發明之方法可以有效地降低暗態漏光的現 象，以增加液晶顯示器之對比。且本發明之方法不僅可以 減少增亮膜之使用數量，更可以降低成本負擔。 除此之外，更可選擇性地搭配遮光區而設置低折射率 區，讓穿過低折射率區之光線，在不同折射率的介質之介 面上產生折射的效果，使得光線能更有效地集中於可透光 區，以進一步地提高液晶顯示器的亮度。其中，遮光區係 位於高分子膜層中之低折射率區之上方。 【實施方式】 請參照第1圖，其繪示依照本發明一較佳實施例的一 種液晶顯示器的剖面結構示意圖。在第1圖中，液晶顯示 器100依序包含背光模組102、第一偏光板104、箄一透明 基板106、液晶層110、第二基板以及第二偏光板n6。 背光模組102係包含一光出射面1〇1。第一偏光板ι〇4係設 置於月光模組10 2之光出射面1 〇 1之·一側〇第一透明基板 106之一表面内且鄰近第一偏光板丨〇4之一面具有複數個 高折射率區108。第二基板114係一彩色濾光基板，且第一 透明基板106與第二基板114之間夾置液晶層uo。上述之 第二基板114更包含可透光區112 a與遮光區112b，高折 9 1333574 /率區⑽係搭配可透統U2a而設置，且可透光區ιΐ2& t位於高折射率區1〇8之上方。上述之可透光區仙所 毛射出之至少三種不同色光包含紅綠藍三色光。可透光區 u2a佔據第—基板114之表面積較佳料於高折射率區 1〇8佔據第一透明基板106之表面積。 其中，高折射率區⑽之較佳為—高分子材料。且高 折射率區H)8之折射率係大於第—透明_ ι〇6之折射According to at least one of the above objects of the present invention, a liquid crystal display is provided. The liquid crystal display described above includes a backlight module having a light exit surface, a molecular film layer, and a liquid crystal display panel. Among them, the polymer film layer «is placed on one side of the light exit surface of the moonlight module. The polymer film layer has a plurality of high refractive index regions and a plurality of low refractive index regions, and the high refractive index region and the low refractive index region can be set by a parent. The liquid crystal display panel is disposed on the polymer germanium layer, and has a plurality of light transmissive regions and a plurality of light shielding regions, and the high refractive index region is disposed with the light transmissive region, and the light transmissive region is located in the polymer film layer. Above the medium U refractive index zone. Wherein when the light passes through the refractive index region in the polymer film layer and reaches the interface between the high refractive index and the low refractive index region, a reflection phenomenon is formed on the interface between the high refractive index and the low refractive index region, and the light is formed : Reflecting into the light transmissive area of the liquid crystal display panel, thereby improving the brightness of the liquid crystal display. Since the polymer film layer is a concentrating film having a condensing effect, according to the preferred embodiment of the present invention, the refractive index of the high refractive index region of the above polymer film layer is between 1.45 and 1.80. According to a preferred embodiment of the present invention, the refractive index of the low refractive index region of the polymer film layer is between 1 and 25 and 1.60. According to the local monthly preferred embodiment, the thickness of the polymer film layer is between 5 /zm and 3GG"m', and the system is between (10) and the heart. Therefore, the present invention uses light at a dielectric of different refractive indices on the interface of 1333574 g to satisfy the refractive law (Snell.'s Law), which allows the incident light to pass through the interface of a medium of different refractive index to generate a reflection phenomenon. It is reflected into the light-transmissive area of the liquid crystal display panel to reduce the light loss through the light-shielding area, thereby increasing the light usage rate and simultaneously increasing the brightness of the liquid money (4). Moreover, the method of the present invention can effectively reduce the phenomenon of dark state light leakage to increase the contrast of the liquid crystal display. Moreover, the method of the present invention can not only reduce the number of use of the brightness enhancement film, but also reduce the cost burden. In addition, the low refractive index region can be selectively matched with the light shielding region, so that the light passing through the low refractive index region has a refraction effect on the interface of the medium with different refractive indexes, so that the light can be more effectively Focus on the light transmissive area to further increase the brightness of the liquid crystal display. Wherein, the light shielding region is located above the low refractive index region in the polymer film layer. Embodiments Please refer to FIG. 1 , which is a cross-sectional structural view of a liquid crystal display according to a preferred embodiment of the present invention. In the first embodiment, the liquid crystal display device 100 sequentially includes a backlight module 102, a first polarizing plate 104, a transparent substrate 106, a liquid crystal layer 110, a second substrate, and a second polarizing plate n6. The backlight module 102 includes a light exit surface 1〇1. The first polarizing plate ι 4 is disposed on one side of the light emitting surface 1 〇 1 of the moonlight module 10 2 and is located in one surface of the first transparent substrate 106 and has a plurality of faces adjacent to the first polarizing plate 丨〇 4 High refractive index zone 108. The second substrate 114 is a color filter substrate, and the liquid crystal layer uo is interposed between the first transparent substrate 106 and the second substrate 114. The second substrate 114 further includes a light transmissive region 112 a and a light shielding region 112 b , and a high fold 9 1333574 / rate region ( 10 ) is disposed with the permeable U2a, and the light transmissive region ιΐ2 & t is located in the high refractive index region 1 Above the 〇8. At least three different color lights emitted by the above-mentioned permeable area are contained in red, green and blue. The light-permeable region u2a occupies a surface area of the first substrate 114. Preferably, the high refractive index region 1 〇 8 occupies a surface area of the first transparent substrate 106. Among them, the high refractive index region (10) is preferably a polymer material. And the refractive index of the high refractive index region H) 8 is greater than the refractive index of the first transparent _ 〇 〇 6
率，尚折射輕⑽之折射率較佳約介於145〜18〇之間， 第一透明基板106之折射率較佳約介於i⑹6〇之間。上 述之高折射率區108之厚度較佳係介於5"m〜3〇〇”之 間，更佳係介於l〇〇#m〜200/zm之間，但並不用以限定本 發明之範圍。 或者，如第1A圖所示，更可以選擇性地搭配遮光區 U2b設置低折射率區109’但並不用以限定本發明之範圍。 其中，遮光區112b係位於低折射率區1〇9之上方。 清參照第2圖，其繪示依照本發明另一較佳實施例的 一種液晶顯不器的剖面結構示意圖。在第2圖中，液晶顯 示器200依序包含背光模組2〇2、高分子膜層2〇8、第一偏 光板204、第-透明基板2Q6、液晶層21。、第二基板叫 以及第二偏光板2 16。背光模組202係包含一光出射面 201〇第一基板214係一彩色濾光基板且第一透明基板2⑽ 與第二基板214之間夾置液晶層21〇。其中，高分子膜層 2〇8具有高折射率區2〇8a與低折射率區2〇8b，且高折射率 區208a與低折射率區2〇8b係交錯設置。上述之第二基板 1333574 H4更包含可透光區212a與遮光區212b，高折射率區2〇8a 係搭配可透光區212a而設置，且可透光區212&係位於高 分子膜層208中之高折射率區208a之上方。低折射率區 2〇8b係搭配遮光212b區而設置，且遮光區21沘係位於高 分子膜層208中之低折射率區208b之上方。可透光區2na 佔據第二基板之表面積較佳係等於高折射率區⑼“佔 據高分子膜層208之表面積。 高分子膜層208之較佳材質為一高分子材料，且其較 佳厚度係介於5 // m〜300 # m之間，更佳係介於丨〇〇 #爪〜2〇〇 从m之間。高折射率區208a之較佳折射率係介於丄〜1肋 之間，低折射率區208b之折射率較佳約介於125〜16〇之 間。在本發明之另-較佳實施例中，第一偏光板2〇4之折 射率較佳係大於高折射率區208&之折射率，以更進一步提 高光線的利用率，但並不用以限定本發明之範圍。少 在本發明之再-較佳實施例中，如第3圖所示，也可 以將高分子膜層208設置於第一透明基板2〇6之下、第一 偏光板204之上，但並不用以限定本發明之範圍。 本發明係利用光線在不同折射率的介質之介面上需滿 :折射定律（Snell’s Law)，讓入射光通過不同折射率的介 貝之"面上時’產生反射現象而將光線反射至液晶顯示面 板之可透光區中，進而提高光線的使用率。請參照第4盘5 圖’係為第！圖中第-透明基板上之高折射率㊣⑽的局 部放大示意圓。在第4圖中，高折射率區刚之折射率係 為⑴’第一透明基板106之折射率為n2，高折射率區1〇8 η 1333574 與第一透明基板106之接觸.介面係為接觸面1〇7，且入射角 為0 ! ’折射角為Θ 2。其中，高折射率區1〇8之折射率〜 大於第一透明基板1〇6之折射率η”因此，根據折射定律 (Snell’s Law) ( 1 ): η, X sin 0 , = n2 X sin β 2 ^ j ^ 當入射光103由高折射率區i〇8(密介質）進入第一透明基板 1〇6 (疏介質）時，折射角02會大於入射角0〗。若當折射角 0 2等於90。時，折射後的光線1 〇5會在接觸面丨〇7上行進。 此時’入射角Θ ,則稱為全反射之臨界角。所以折射定 律公式（1 )可改寫成： Θ c= sin''( η2/ Πι) ( 2 ) 所以由第（2)可知，當入射角0!大於全反射的臨界角 時，則會發生全反射的現象，如第5圖所示，於接觸面1 〇7 上產生反射之光線105a。 請再參照第1圖，並同時參照第4與5圖。首先，背 光模組102投射出的光線會進入第一偏光板1〇4。接著，入 射光103經過高折射率區108之後，會在接觸面107上產 生反射之光線105。隨後，光線105沿著高折射區108與第 一透明基板106之介面前進，在穿過第一透明基板106之 後，依序進入液晶層110與第二基板114中之可透光區 112a、第二基板114以及第二偏光板116。此為前述之全反 射臨界角Θ c之狀況。而入射光線1 〇3a則為全反射之狀況， 全反射後之光線l〇5a亦是穿越過第二基板114之可透光區 112a，以提高液晶顯示器的亮度。 12 1333574 更具體地說，本發明係用光線在不同折射率的介質之 介面上需滿足折射定律（Snell’s Law)，讓入射光通過不同 折射率的介質之介面上時，產生反射現象而將光線反射至 液晶顯示面板之可透光區112a中，以減少因經過第二基板 Π4遮光區U2b之光線損耗，進而增加光線的使用率，且 同時提高液晶顯示器的亮度。 除此之外’本發明之方法更可以讓穿過折射率較低的 第一透明基板106之入射光103b，在不同折射率的介質之 介面（如高折射區108與第一透明基板1〇6之介面）上產生折 射的效果，使得光線105b能更有效地集中於第二基板ιΐ4 之可透光區112a，以更進一步地提高液晶顯示器的亮度。 以下將針對本發明較佳實施例中之高折射率區之製造 方法做一詳細說明，但此製造方法並不用以限定本發明之 範圍。 又 製作方法一 請參照第6A圖至第6E圖，係繪示依據本發明之一較 佳實施例之於透明基板上製作高折射率區之製程步驟的处 構示意圖。在帛6A圖中，提供一透明基板術，並於透明口 基板402上形成一光阻層4〇〇接著，在第吒圖中對光 阻層4〇4進行—微影製程，以形成圖案化光阻406。在第 6C圖中，钱刻未為圖案化光阻傷覆蓋之透明基板4仏 以於透明基板402上形成凹槽其中，凹槽4〇8係搭配 第二基板之可透光區（未繪示）而設置。隨後，移除圖案化光 13 1333574 阻 406。 在第6D圖中，利用旋塗法形成一高分子材料4i〇於凹 槽408之内與透明基板4〇2之上。其中，高分子材料41〇 之折射率係大於透明基板402之折射率。接著，再利用紫 外光線照射高分材料410’以硬化高分子材料41〇。在第6£ 圖中，進行一蝕刻製程與研磨製程，以於透明基板4〇2之 表面上形成一平整的表面，同時形成複數個高折射率區 412❶如此一來，即可於透明基板上完成高折射率區4丨2之 製作。 或者，更可以依需求於透明基板上形成複數個低折射 率區’但並不帛以限定本發明之範圍H㈣射率區 係搭配第二基板之遮光區而設置。 t作方法二 請參照帛7A圖至帛7D B1，係繪示依據本發明之另一 較佳實施例之於透明基板上製作高折射率區之製程步驟的 結構示意圖。在第7A圖十，於透明基板5〇2上形成一光阻 層（未繪示），接著對光阻層進行—微影製程以形成圖案化 光阻504。在第7B圖中，蝕刻未為圖案化光阻5〇4覆蓋之 透明基板502，以於透明基板5〇2上形成凹槽寫。直中， ^槽506係搭配第二基板之可透光區（未繪示3而設置。隨 後’移除圖案化光阻504。 在第7C圖中，於偏光板508上塗佈_層黏著層51〇。 其中’上述之黏著層5H)之材料較佳為_高分子材料，黏 14 1333574 著層510之厚度較佳係介於·5 至3〇〇 "爪之間更佳 係介於100 "m至200 之間。且上述之黏著層51〇之 折射率係大於透明基板502之折射率。然後，如第7〇圖所 不，透過黏著層510將偏光板508與透明基板5〇2黏貼在 一起。如此一來，即可於透明基板上完成高折射率區512 之製作。 或者，更可以依需求於透明基板上形成複數個低折射 率區，但並不用以限定本發明之範圍。其中，低折射率區 係搭配第二基板之遮光區而設置。 製作方法三 請參照第8A圖至第8D圖，係繪示依據本發明之再一 較佳實施例之於透明基板上製作高分子膜層之製程步驟的 結構示意圖。在第8A圖中，提供一透明基板6〇2。接著， 在第8B圖中，形成一高分子膜層604於透明基板6〇2之 上。上述形成高分子膜層6〇4之方法較佳為旋塗法，但並 不用以限定本發明之範圍。 ^隨後，於第8C圖中，利用光罩與紫外光6〇8對高 分子膜層604進行曝光’以形成如帛8D圖所示之高折射率 區:04a與低折射率區6〇4b。其中，上述之高分子膜層_ 係藉由控制曝光時間與曝光強度而得到不同折射率之高折 射率區604a與低折射率區6〇仆。如此一來，即可於透=基 板上完成高折射率區與低分子折射率區之製作。或者，： 本七月之另-較佳實施例中’更可以於偏光板上形成高分 15 1333574 子膜層’使得偏光板上具有·高折㈣區與低㈣率區，但 並不用以限定本發明之範圍。 一 由上述本發明之較佳實施例可知，應用本發明具有下 列優點纟發明之液晶顯示器不僅可以減少因經過遮光區 而產生之之光損耗，更可以集中光場分布’進而提高液晶 員不益之亮度。再者，應用本發明之方法可以有效地降低 暗態漏光的現象，以增加液晶顯示器之對比。且本發明之 方法不僅可以減少增亮膜之使用數量，更可以降低‘本。 除此之外，本發明之方法更可以讓穿過低折射率區之光 線’在不同折射率的介質之介面上產生折射的效果，使得 光，更f效地集中於可透光區’以更進—步地提高液晶顯 不益的党度。 雖然本發明已以較佳實施例揭露如上，然其並非用以 限定本發明，任何熟習此技藝者，在不脫離本發明之精神 =範圍内，當可作各種之更動與㈣，因此本發明之保護 範圍當視後附之中請專利範圍所界定者為準。 【圖式簡單說明】 為讓本發明之上述和其他目的、特徵、優點與實施例 能更明顯易懂’所附圖式之詳細說明如下： 第1 〃、第1A圖，其繪示依照本發明較佳實施例的一種 液晶顯示器的剖面結構示意圖。 曰第γ圖，其繪示依照本發明另一較佳實施例的一種液 晶顯示器的剖面結構示意圖。 1333574 第3圖，其繪示依照本發明 — 晶顯示器的剖面結構示意圖。 …圭貫施例的-種液 第4與第5目’係為第i圖中第 大示意目。 《相隸之局部放 第6A圖至第犯圖，係繪示依據本發明之一較 例之於透明基板上製作高折射率區之製程步驟的結構示意 圖。 , 第7A圖至第7〇圖，係繪示依據本發明之另一較 =之於透明基板上製作高折射率區之製程步驟的結構示 思、圖。 第8A圖至第8〇圖，係繪示依據本發明之再一較 =例之於透明基板上製作高分子膜層之製程步驟的結^示 思圖。 【主要元件符號說明】 100、200 :液晶顯示器 2〇1 :光出射面 204 :第一偏光板 208 .向折射率區 604b :低折射率 216 :第二偏光板 105a :光線 接觸面 101 104 108 109 116 105 107 208a :高折射率區 102 ' 202 ： 背光模組 106、206 :第—透明基板 110、210 :液晶層 114、214:第二基板 區 103、103a :入射光 2 0 8 b .低折射率區 112b ' 212b :遮光區 404 :光阻層 408 ' 506 ·凹槽 1333574 112a 402 ' 406、 508 : 604 ： 608 ： θ ,： 、212a :可透光區 502、602 :透明基板 504 :圖案化光阻層 偏光板 高分子膜層 紫外光線 入射角 412、512:高折射率區 410 :高分子材料 510 :黏著層 604a :高折射率 606 :光罩 rh、n2 :折射率 0 2 :折射角The refractive index of the light refracting light (10) is preferably between about 145 and 18 Å, and the refractive index of the first transparent substrate 106 is preferably between about (6) and 6 Å. The thickness of the high refractive index region 108 is preferably between 5 "m~3〇〇", more preferably between l〇〇#m~200/zm, but is not intended to limit the invention. Alternatively, as shown in FIG. 1A, the low refractive index region 109' may be selectively disposed in combination with the light shielding region U2b, but is not intended to limit the scope of the present invention. The light shielding region 112b is located in the low refractive index region. 9 is a schematic cross-sectional view of a liquid crystal display device according to another preferred embodiment of the present invention. In FIG. 2, the liquid crystal display device 200 includes a backlight module 2 in sequence. 2. The polymer film layer 2〇8, the first polarizing plate 204, the first transparent substrate 2Q6, the liquid crystal layer 21. The second substrate is called the second polarizing plate 216. The backlight module 202 includes a light emitting surface 201. The first substrate 214 is a color filter substrate and the liquid crystal layer 21 is interposed between the first transparent substrate 2 (10) and the second substrate 214. The polymer film layer 2〇8 has a high refractive index region 2〇8a and low. The refractive index region 2〇8b, and the high refractive index region 208a and the low refractive index region 2〇8b are alternately arranged. The two substrates 1333574 H4 further comprise a light transmissive region 212a and a light shielding region 212b, the high refractive index region 2〇8a is disposed with the light transmissive region 212a, and the light transmissive region 212& is located in the polymer film layer 208. Above the refractive index region 208a, the low refractive index region 2〇8b is disposed with the light shielding 212b region, and the light shielding region 21 is located above the low refractive index region 208b in the polymer film layer 208. The light transmissive region 2na occupies The surface area of the second substrate is preferably equal to the high refractive index region (9) "occupying the surface area of the polymer film layer 208. The preferred material of the polymer film layer 208 is a polymer material, and the preferred thickness thereof is between 5 // m and 300 # m, and more preferably between 丨〇〇#爪~2〇〇from m between. The preferred refractive index of the high refractive index region 208a is between 丄1 and 1 rib, and the refractive index of the low refractive index region 208b is preferably between about 125 and 16 Å. In another preferred embodiment of the present invention, the refractive index of the first polarizing plate 2〇4 is preferably greater than the refractive index of the high refractive index region 208& to further improve the utilization of light, but is not limited thereto. The scope of the invention. In the re-preferred embodiment of the present invention, as shown in FIG. 3, the polymer film layer 208 may be disposed under the first transparent substrate 2〇6 and above the first polarizing plate 204, but It is not intended to limit the scope of the invention. The invention utilizes the light to meet the interface of the medium of different refractive index: the law of refraction (Snell's Law), so that the incident light passes through the different refractive index of the quotient on the surface to reflect the phenomenon and reflect the light to the liquid crystal. The light transmissive area of the display panel further increases the utilization rate of light. Please refer to the 4th plate 5 figure ' is the first! A partially enlarged schematic circle of the high refractive index positive (10) on the first transparent substrate in the figure. In Fig. 4, the refractive index of the high refractive index region is (1) 'the refractive index of the first transparent substrate 106 is n2, and the high refractive index region 1 〇 8 η 1333574 is in contact with the first transparent substrate 106. The interface is The contact surface is 1〇7 and the incident angle is 0 ! 'The angle of refraction is Θ 2. Wherein, the refractive index of the high refractive index region 〇8 is greater than the refractive index η of the first transparent substrate 〇6. Therefore, according to the law of refraction (Snell's Law) (1): η, X sin 0 , = n2 X sin β 2 ^ j ^ When the incident light 103 enters the first transparent substrate 1〇6 (sparse medium) from the high refractive index region i〇8 (dense medium), the refraction angle 02 will be greater than the incident angle 0. If the refraction angle is 0 2 When it is equal to 90., the refracted light 1 〇5 will travel on the contact surface 。7. At this time, the incident angle Θ is called the critical angle of total reflection. Therefore, the refractive law formula (1) can be rewritten as: Θ c= sin''( η2/ Πι) ( 2 ) Therefore, it can be seen from (2) that when the incident angle 0! is greater than the critical angle of total reflection, total reflection occurs, as shown in Fig. 5 The reflected light 105a is generated on the contact surface 1 〇 7. Please refer to Fig. 1 and refer to Figures 4 and 5. At the same time, the light projected by the backlight module 102 enters the first polarizing plate 1〇4. After the incident light 103 passes through the high refractive index region 108, a reflected light 105 is generated on the contact surface 107. Subsequently, the light 105 is along the high refractive region 108 and the first The interface of the substrate 106 advances, and after passing through the first transparent substrate 106, sequentially enters the light transmissive region 112a, the second substrate 114, and the second polarizer 116 in the liquid crystal layer 110 and the second substrate 114. This is the foregoing The total reflection critical angle Θ c is the condition, and the incident light 1 〇 3a is the state of total reflection, and the total reflected light l 〇 5a is also passed through the permeable region 112a of the second substrate 114 to improve the liquid crystal display More specifically, the present invention relates to the use of light at the interface of media of different refractive indices to satisfy the law of refraction (Snell's Law), which causes reflection when incident light passes through the interface of media of different refractive indices. The light is reflected into the light transmissive area 112a of the liquid crystal display panel to reduce the light loss caused by the light shielding area U2b passing through the second substrate 4, thereby increasing the light usage rate and simultaneously increasing the brightness of the liquid crystal display. The method of the present invention allows the incident light 103b passing through the first transparent substrate 106 having a lower refractive index to be interfaced with a medium having a different refractive index (such as the high refractive region 108 and the first transparent substrate). The effect of refraction is generated on the interface of the board 1〇6, so that the light 105b can be more effectively concentrated on the light transmissive area 112a of the second substrate ι4 to further improve the brightness of the liquid crystal display. The manufacturing method of the high refractive index region in the embodiment is described in detail, but the manufacturing method is not intended to limit the scope of the present invention. The manufacturing method is as shown in FIGS. 6A to 6E, which is based on the present invention. A schematic diagram of a process step of fabricating a high refractive index region on a transparent substrate in accordance with a preferred embodiment. In FIG. 6A, a transparent substrate is provided, and a photoresist layer 4 is formed on the transparent substrate 402. Then, the photoresist layer 4〇4 is subjected to a lithography process to form a pattern. Photoresist 406. In FIG. 6C, the transparent substrate 4 that is not covered by the patterned photoresist is formed to form a groove on the transparent substrate 402, and the groove 4〇8 is matched with the light transmissive area of the second substrate (not drawn) Set). Subsequently, the patterned light 13 1333574 is removed 406. In Fig. 6D, a polymer material 4i is formed by spin coating in the inside of the recess 408 and on the transparent substrate 4?. The refractive index of the polymer material 41 系 is larger than the refractive index of the transparent substrate 402. Next, the high-part material 410' is irradiated with ultraviolet light to harden the polymer material 41. In the sixth drawing, an etching process and a polishing process are performed to form a flat surface on the surface of the transparent substrate 4〇2, and a plurality of high refractive index regions 412 are formed at the same time, so that the transparent substrate can be formed on the transparent substrate. The fabrication of the high refractive index region 4丨2 is completed. Alternatively, a plurality of low refractive index regions may be formed on the transparent substrate as needed, but are not provided to limit the H (four) transmittance region of the present invention to the light shielding region of the second substrate. Referring to Figures 7A to 7D B1, there is shown a schematic structural view of a process for fabricating a high refractive index region on a transparent substrate in accordance with another preferred embodiment of the present invention. In FIG. 7A, a photoresist layer (not shown) is formed on the transparent substrate 5〇2, and then the photoresist layer is subjected to a lithography process to form a patterned photoresist 504. In Fig. 7B, the transparent substrate 502 which is not covered by the patterned photoresist 5?4 is etched to form a groove write on the transparent substrate 5?. Straight, the groove 506 is matched with the light transmissive area of the second substrate (not shown as 3. Then the patterned photoresist 504 is removed. In the 7C picture, the layer is adhered to the polarizing plate 508. The layer 51〇. The material of the above-mentioned adhesive layer 5H is preferably a polymer material, and the thickness of the layer 14 510574 is preferably between 5 and 3 〇〇" Between 100 "m to 200. Further, the refractive index of the adhesive layer 51 is larger than the refractive index of the transparent substrate 502. Then, as shown in Fig. 7, the polarizing plate 508 is adhered to the transparent substrate 5〇2 through the adhesive layer 510. In this way, the fabrication of the high refractive index region 512 can be completed on the transparent substrate. Alternatively, a plurality of low refractive index regions may be formed on the transparent substrate as needed, but are not intended to limit the scope of the invention. Wherein, the low refractive index region is provided in combination with the light shielding region of the second substrate. [Production Method 3] Referring to Figures 8A to 8D, there is shown a schematic structural view of a process for fabricating a polymer film layer on a transparent substrate according to still another preferred embodiment of the present invention. In Fig. 8A, a transparent substrate 6〇2 is provided. Next, in Fig. 8B, a polymer film layer 604 is formed on the transparent substrate 6〇2. The above method of forming the polymer film layer 6〇4 is preferably a spin coating method, but is not intended to limit the scope of the invention. ^ Subsequently, in FIG. 8C, the polymer film layer 604 is exposed by a photomask and ultraviolet light 6〇8 to form a high refractive index region as shown in FIG. 8D: 04a and a low refractive index region 6〇4b. . Here, the above-mentioned polymer film layer _ is obtained by controlling the exposure time and the exposure intensity to obtain a high refractive index region 604a and a low refractive index region 6 having different refractive indexes. In this way, the fabrication of the high refractive index region and the low molecular refractive index region can be completed on the transparent substrate. Alternatively, in the other embodiment of the present invention, in the preferred embodiment, a higher score of 15 1333574 sub-film layer may be formed on the polarizing plate such that the polarizing plate has a high-definition (four) region and a low (four) region, but is not used. The scope of the invention is defined. It can be seen from the above preferred embodiments of the present invention that the application of the present invention has the following advantages. The liquid crystal display of the invention can not only reduce the optical loss caused by the light-shielding region, but also concentrate the light field distribution to further improve the liquid crystals. Brightness. Furthermore, the method of the present invention can effectively reduce the phenomenon of light leakage in the dark state to increase the contrast of the liquid crystal display. Moreover, the method of the present invention can not only reduce the number of use of the brightness enhancement film, but also reduce the 'this. In addition, the method of the present invention can make the light passing through the low refractive index region 'refractive effect on the interface of the medium with different refractive indexes, so that the light is more concentrated in the light transmissive region' To further improve the party's degree of LCD display. While the invention has been described above by way of a preferred embodiment, it is not intended to limit the invention, and the present invention may be modified and/or varied without departing from the spirit and scope of the invention. The scope of protection shall be subject to the definition of patent scope in the attached annex. BRIEF DESCRIPTION OF THE DRAWINGS The above and other objects, features, advantages and embodiments of the present invention will become more <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; A schematic cross-sectional view of a liquid crystal display according to a preferred embodiment of the invention. Figure γ is a cross-sectional view showing a liquid crystal display according to another preferred embodiment of the present invention. 1333574 FIG. 3 is a cross-sectional view showing the structure of a crystal display in accordance with the present invention. ...the fourth and fifth items of the example of the application of the genus of the genus is the first indication in the figure i. Fig. 6A to Fig. 3 are schematic structural views showing a process step of fabricating a high refractive index region on a transparent substrate according to a comparative example of the present invention. 7A to 7B are structural diagrams and diagrams showing another process step of fabricating a high refractive index region on a transparent substrate according to the present invention. 8A to 8D are diagrams showing a process of fabricating a polymer film layer on a transparent substrate according to still another embodiment of the present invention. [Description of main component symbols] 100, 200: Liquid crystal display 2〇1: Light exit surface 204: First polarizing plate 208. Forward refractive index region 604b: Low refractive index 216: Second polarizing plate 105a: Light contact surface 101 104 108 109 116 105 107 208a: high refractive index region 102 '202 : backlight module 106, 206: first transparent substrate 110, 210: liquid crystal layer 114, 214: second substrate region 103, 103a: incident light 2 0 8 b . Low refractive index region 112b ' 212b : light shielding region 404 : photoresist layer 408 ' 506 · groove 1333574 112a 402 ' 406 , 508 : 604 : 608 : θ , : , 212a : light transmissive region 502 , 602 : transparent substrate 504 : patterned photoresist layer polarizing plate polymer film layer ultraviolet light incident angle 412, 512: high refractive index region 410: polymer material 510: adhesive layer 604a: high refractive index 606: mask rh, n2: refractive index 0 2 : refraction angle
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