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TWI275873B - Light diffusion plate for direct type backlight module and its manufacturing method - Google Patents

Light diffusion plate for direct type backlight module and its manufacturing method Download PDF

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Publication number
TWI275873B
TWI275873B TW93114492A TW93114492A TWI275873B TW I275873 B TWI275873 B TW I275873B TW 93114492 A TW93114492 A TW 93114492A TW 93114492 A TW93114492 A TW 93114492A TW I275873 B TWI275873 B TW I275873B
Authority
TW
Taiwan
Prior art keywords
light
diffusion plate
light diffusion
light diffusing
backlight module
Prior art date
Application number
TW93114492A
Other languages
Chinese (zh)
Other versions
TW200538810A (en
Inventor
Jen-Huai Chang
Kai-Shin Li
Chih Hung Wang
Original Assignee
Entire Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Entire Technology Co Ltd filed Critical Entire Technology Co Ltd
Priority to TW93114492A priority Critical patent/TWI275873B/en
Priority to JP2004254071A priority patent/JP2005329696A/en
Publication of TW200538810A publication Critical patent/TW200538810A/en
Application granted granted Critical
Publication of TWI275873B publication Critical patent/TWI275873B/en

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  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Planar Illumination Modules (AREA)
  • Optical Elements Other Than Lenses (AREA)
  • Liquid Crystal (AREA)

Abstract

The present invention provides a light diffusion plate in a direct type backlight module and its manufacturing method, in which the light diffusion plate and a light diffusing agent are extruded with an extruder. The optical resin material forming the light diffusion plate has an index of refraction different from that of the light diffusing material. A prism array having an angle corresponding to the used material is carved on the surface of the light diffusion plate. It is possible to refract incident light and control a reflected light angle by the index of refraction of the light diffusion plate and the prism structure formed on the surface, so as to collect diffused light again, reduce consumption of light and increase brightness. Moreover, the light diffusion plate can be formed as a one-dimensional, two-dimensional serrated, or nonequivalent two-dimensional shapes thereby decreasing the vertical and horizontal prisms needed.

Description

時間。 I 101年12月19日更正替換頁. 綜上所述,本發明係實為一具有新穎性、進步性及可 2專業利用者,應符合我國專利法所規定之專利申請要件 =疑’爰依法提出發明專利申請,祈鈞局早日賜准專 , 利,至感為禱。 准以上所述者’僅為本發明之一較佳實施例而已,並 =用來限定本發明實施之範圍,舉凡依本發明申請專利範 所述之形狀、構造、特徵及精神所為之均等變化與修 飾,均應包括於本發明之申請專利範圍内。 餐广 【圖式簡單說明】 第-圖.其係為習知技術之直下式背光模組之結構示 意圖; 第二圖:其係為本發明之一較佳實施例之光擴散板之 製作流程圖; 第-A ® ·其係為本發明之一較佳實施例之光擴散 板之剖視圖; | 第- Β ϋ ·其係為本發明之一較佳實施例之光擴散 - 板之側視圖; 第- C圖·其係為本發明之一較佳實施例之光擴散 板之立體圖; 第四圖.其係為本發明之另一較佳實施例之光擴散板 之側視圖; 第五A ® ’其係為本發明之較佳實施例之光擴 散板之側視圖;以及 1275873 101年12月19日更正替換頁 第五B圖:其係為本發明之一較佳實施例之光擴散 板之俯視圖。 【主要元件符號說明】 10'· · ·反射片 - 1Γ· · ·複數個光源 12' · · ·光擴散板 13'· ··第一稜鏡片(prism sheet)time. I corrected the replacement page on December 19, 101. In summary, the present invention is a novelty, progressive, and professional use, and should meet the requirements of the patent application specified in the Patent Law of China. To file an application for a patent for invention in accordance with the law, the Prayer Council will grant an exclusive and profitable interest as soon as possible. The above description is only a preferred embodiment of the present invention, and is used to define the scope of the present invention, and the shapes, structures, features, and spirits described in the patent application are equally varied. And modifications are intended to be included in the scope of the invention. Meal [Simplified description of the drawing] Fig. - Fig. is a schematic structural view of a direct type backlight module of the prior art; Fig. 2 is a manufacturing process of the light diffusing plate of a preferred embodiment of the present invention Figure-A ® is a cross-sectional view of a light diffusing plate according to a preferred embodiment of the present invention; | - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Figure C is a perspective view of a light diffusing plate according to a preferred embodiment of the present invention; and Figure 4 is a side view of a light diffusing plate according to another preferred embodiment of the present invention; A ® ' is a side view of a light diffusing plate according to a preferred embodiment of the present invention; and 1 285 587 December 19, 2011 Correction Replacement Page 5B: it is a light of a preferred embodiment of the present invention Top view of the diffuser. [Description of main component symbols] 10'· · · Reflective sheet - 1Γ · · · Multiple light sources 12' · · · Light diffusing plate 13'···First prism sheet

14’· ··第二棱鏡片 15' · · ·增亮膜 1 · · ·光擴散板 10 · · ·光學樹脂 12 · · ·光擴散劑 14 · · ·紋路 16· · ·頂角 P· · ·兩頂角之距離 Θ···頂角之角度 (本說明書格式、順序,請勿任意更動, ※申請案號:仏丨144^之 現邹分請勿填寫) ※申請日:※心分類 一、 發明名稱:(中文/英文) 直下式月光換組之光擴散板及其製作方法 二、 中文發明摘要: 霆 本發明係有關於-種直下式背光模组之光擴散板及 其製作方法,其係揭示利用押出技術,以押出機押出一光 擴散板與-光擴㈣。該光擴散板使用不同材質的折射 率’在滾輪表面也要對應於所使用之材質刻出不同角度的 稜鏡陣列’利用折射率還树鏡结構的棱鏡角度把入射光 經折射之後,通過鋸齒狀的板面控制其出光角度,讓原已 擴散開來的光線再度集中、減少光耗損率,故可增加亮 度。再者’將該光擴散板設計成一維或二維鋸齒狀或不相 等之二維形狀’而減少同時需要水平和垂直的棱鏡片。 英文發明摘要: ·; 1 101年12月19曰更正替換頁·14'···Second prism sheet 15' · · · Brightening film 1 · · · Light diffusing plate 10 · · · Optical resin 12 · · · Light diffusing agent 14 · · · Grain 16 · · · Top angle P · · · The distance between the two corners Θ···The angle of the apex angle (Do not change the format and order of this manual. ※Application number: 仏丨144^ The current Zou points do not fill in) ※Application date: ※心Classification I. Name of the invention: (Chinese/English) Light diffusing plate for direct-lit moonlight-changing group and its manufacturing method II. Abstract of Chinese invention: The present invention relates to a light diffusing plate of a direct-type backlight module and its fabrication The method, which reveals the use of extrusion technology, is used to extrude a light diffusing plate and a light diffusing (four). The light diffusing plate uses a refractive index of different materials. 'The array of rollers on the surface of the roller corresponding to the material used to etch different angles' uses the prism angle of the refractive index and the tree mirror structure to refract incident light, and then through the sawtooth The shape of the plate controls the angle of light, so that the originally diffused light is again concentrated and the light loss rate is reduced, so that the brightness can be increased. Furthermore, the light diffusing plate is designed to be one-dimensional or two-dimensional jagged or unequal two-dimensional shape' to reduce the need for horizontal and vertical prism sheets. English Abstract: ·; 1 December 19, 2011 Correction Replacement Page·

+、申請專利範圍: -一-J 1. 一種直下式背光模組之光擴散板之製作方法,其主要步 驟係包括: 使用一押出機將一光學樹脂與一光擴散劑加熱,以進行 - 熔融混鍊;以及 於押出成形一光擴散板時,使用一滾輪滾壓該光擴散板 之至少一表面,其中該滾輪之表面係具有複數個刻 紋’其中該光擴散板經過該滾輪滾壓後,形成X方向 之一鋸齒形狀以及Y方向之不同於X方向之形狀。 霞 2. 如申請專利範圍第1項所述之直下式背光模組之光擴散 板之製作方法,其中該光學樹脂係選自聚碳酸酯 (Polycarbonate)、PMMA、MS、ABS、PET、PETG、PS、 MBS與C0C所組成之群組之一者。 3. 如申請專利範圍第〗項所述之直下式背光模組之光擴散 板之製作方法’其中該光擴散劑係選自、Ms、 ABS、PS、PU、含 Si02、Mg(0H)2、CaC03、BaS04、 A1203、Ti02 粉末。 · 4. 如申請專利範圍第i項所述之直下式背光模組之光擴散 板之製作方法,其中光擴散基板尚包含一抗靜電劑、紫 . 外線吸收劑、耐燃劑、抗氧化劑等加工助劑之其中之一 者或其任意組合者。 5. 如申請專利範圍第】項所述之直下式背光模組之光擴散 板之製作方法,其中該光擴散基板之厚度在 1mm〜10mm 〇 6. 如申睛專利範圍第i項所述之直下式背光模組之光擴散 1275873+, the scope of application for patents: -1 - J 1. A method for fabricating a light diffusing plate of a direct type backlight module, the main steps of which include: heating an optical resin and a light diffusing agent using an extruder to carry out - Melting the mixed chain; and when extruding a light diffusing plate, using a roller to press at least one surface of the light diffusing plate, wherein the surface of the roller has a plurality of grooves, wherein the light diffusing plate is rolled through the roller Thereafter, a sawtooth shape in the X direction and a shape different from the X direction in the Y direction are formed. The method of manufacturing a light diffusing plate for a direct type backlight module according to claim 1, wherein the optical resin is selected from the group consisting of polycarbonate (Polycarbonate), PMMA, MS, ABS, PET, PETG, One of the groups consisting of PS, MBS and C0C. 3. The method for fabricating a light diffusing plate of a direct type backlight module as described in claim </ RTI> wherein the light diffusing agent is selected from the group consisting of: Ms, ABS, PS, PU, SiO2, Mg(0H)2 , CaC03, BaS04, A1203, Ti02 powder. 4. The method for fabricating a light diffusing plate of a direct type backlight module as described in claim i, wherein the light diffusing substrate further comprises an antistatic agent, a purple outer line absorbent, a flame resistant agent, an antioxidant, and the like. One of the auxiliaries or any combination thereof. 5. The method for fabricating a light diffusing plate of a direct type backlight module according to the invention, wherein the thickness of the light diffusing substrate is 1 mm to 10 mm 〇6. Direct-lit backlight module light diffusion 1285873

板之製作方法,其中該光擴散板於完成製作後係包含複 數個頂角》 7. 如申請專利範圍第6項所述之直下式背光模組之光擴散 板之製作方法,其中該頂角的角度為80〜110度。 9 8. 如申請專利範圍第一6項所述之直下式背光模組i光邊散 板之製作方法,其中該頂角相距之距離為5〜2〇〇em。 一種直下式背光模組光擴散板,其係透過使用一押出機 將一光學樹脂與—光擴散劑加熱,以進行溶融混鍊,並 押出成形-光擴散板,該光擴散板用一滾輪滾壓形 ==方其中該複數侧紋具有X方向之-鋸齒形 向之不同於X方向之形狀。The method for manufacturing a plate, wherein the light diffusing plate comprises a plurality of vertices after completion of the production. 7. The method for manufacturing a light diffusing plate of a direct type backlight module according to claim 6 of the patent application, wherein the apex angle The angle is 80 to 110 degrees. 9 8. The method for manufacturing a direct-lit backlight module i-light-edge plate as described in claim 6 of the patent application, wherein the distance between the apex angles is 5 to 2 〇〇em. A direct type backlight module light diffusing plate is obtained by heating an optical resin and a light diffusing agent by using an extruder to melt a mixed chain, and extruding a forming-light diffusing plate, and the light diffusing plate is rolled by a roller The press shape == square where the complex side flake has a shape in the X direction which is different from the X direction.

12 1275873 101年12月19日更正替換頁, 四、指定代表圖: (一) 本案指定代表圖為:第(二)圖。 (二) 本代表圖之元件符號簡單說明: 無.12 1275873 Correction page on December 19, 101, 4. Designated representative map: (1) The representative representative of the case is: (2). (2) A brief description of the symbol of the representative figure: None.

五、本案若有化學式時,請揭示最能顯示發明特徵的化學式:5. If there is a chemical formula in this case, please disclose the chemical formula that best shows the characteristics of the invention:

TW93114492A 2004-05-21 2004-05-21 Light diffusion plate for direct type backlight module and its manufacturing method TWI275873B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
TW93114492A TWI275873B (en) 2004-05-21 2004-05-21 Light diffusion plate for direct type backlight module and its manufacturing method
JP2004254071A JP2005329696A (en) 2004-05-21 2004-09-01 Light diffusion plate for direct type backlight module, and its manufacturing method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
TW93114492A TWI275873B (en) 2004-05-21 2004-05-21 Light diffusion plate for direct type backlight module and its manufacturing method

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TW200538810A TW200538810A (en) 2005-12-01
TWI275873B true TWI275873B (en) 2007-03-11

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Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007187881A (en) * 2006-01-13 2007-07-26 Asahi Kasei Chemicals Corp Laminated resin plate
US7777166B2 (en) 2006-04-21 2010-08-17 Cree, Inc. Solid state luminaires for general illumination including closed loop feedback control
US11026303B2 (en) 2018-10-30 2021-06-01 Himax Technologies Limited Illuminator
TWI677997B (en) * 2018-11-01 2019-11-21 奇景光電股份有限公司 Illuminator
CN115895007B (en) * 2022-12-17 2023-08-08 常熟卓辉光电科技股份有限公司 Light guide plate and manufacturing method thereof

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* Cited by examiner, † Cited by third party
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JP3732253B2 (en) * 1995-05-18 2006-01-05 大日本印刷株式会社 Manufacturing method of lens sheet for liquid crystal display device
JPH09304606A (en) * 1996-05-15 1997-11-28 Mitsubishi Plastics Ind Ltd Light diffusing prism sheet

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JP2005329696A (en) 2005-12-02

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