TWM293444U - Optical device capable of improving mura phenomenon - Google Patents

Optical device capable of improving mura phenomenon Download PDF

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Publication number
TWM293444U
TWM293444U TW094221787U TW94221787U TWM293444U TW M293444 U TWM293444 U TW M293444U TW 094221787 U TW094221787 U TW 094221787U TW 94221787 U TW94221787 U TW 94221787U TW M293444 U TWM293444 U TW M293444U
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TW
Taiwan
Prior art keywords
light
optical component
layer
micro
sheet
Prior art date
Application number
TW094221787U
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Chinese (zh)
Inventor
Chi-Liang Zseng
Chi-Wen Liao
Original Assignee
Exploit Technology Co Ltd
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Publication date
Application filed by Exploit Technology Co Ltd filed Critical Exploit Technology Co Ltd
Priority to TW094221787U priority Critical patent/TWM293444U/en
Publication of TWM293444U publication Critical patent/TWM293444U/en
Priority to KR1020060093489A priority patent/KR20070064239A/en
Priority to JP2006278515A priority patent/JP2007164146A/en

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Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/02—Diffusing elements; Afocal elements
    • G02B5/0205—Diffusing elements; Afocal elements characterised by the diffusing properties
    • G02B5/021—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place at the element's surface, e.g. by means of surface roughening or microprismatic structures
    • G02B5/0215—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place at the element's surface, e.g. by means of surface roughening or microprismatic structures the surface having a regular structure
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
    • G02B1/10—Optical coatings produced by application to, or surface treatment of, optical elements
    • G02B1/11—Anti-reflection coatings
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/0036—2-D arrangement of prisms, protrusions, indentations or roughened surfaces
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/0038—Linear indentations or grooves, e.g. arc-shaped grooves or meandering grooves, extending over the full length or width of the light guide
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0075—Arrangements of multiple light guides
    • G02B6/0076—Stacked arrangements of multiple light guides of the same or different cross-sectional area

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Elements Other Than Lenses (AREA)
  • Liquid Crystal (AREA)

Description

M293444 八、新型說明： 【新型所屬之技術領域】 本創作有關於諸如光擴散膜片、擴散板、聚光片等等光學元件， 且特別有關於具有可將光線遮蔽、反射、擴散之微結構之光學元件， 可克服因設計或結構需要而衍生之光學元件發光面亮度不均所產生 之明暗帶(輝線)問題。 φ 【先前技術】 如圖1所不之習知技藝，光擴散片丨具有透明基片2、於基片2 之-表面設置之擴散層2a、於基片2該表面之相對表面設置之抗靜 電層2b，光線由抗靜電層2b面向基片2之表面之相對面(入光面健 入’通過基片2，再由擴散層2a面向基片2之表面之相對面(出夠 射出’通過光_丨之光線因擴散層2a之結構而產生均勻散射現M293444 VIII. New description: [New technical field] This work is about optical components such as light diffusion diaphragms, diffusers, concentrating sheets, etc., and especially for microstructures that can shield, reflect, and diffuse light. The optical component can overcome the problem of light and dark band (light line) caused by uneven brightness of the light-emitting surface of the optical component derived from design or structural requirements. φ [Prior Art] As shown in Fig. 1, the light-diffusing sheet has a transparent substrate 2, a diffusion layer 2a disposed on the surface of the substrate 2, and an anti-reflection layer disposed on the opposite surface of the surface of the substrate 2. In the electrostatic layer 2b, the light is directed from the antistatic layer 2b to the opposite surface of the surface of the substrate 2 (the light incident surface is moved in through the substrate 2, and the diffusion layer 2a faces the opposite surface of the surface of the substrate 2 (out of the shot) Uniform scattering occurs by the light of the light ray due to the structure of the diffusion layer 2a

象0 當繊片i應用於背光模組時，由於背光模組實際設計與結構 運用上之綠，使得麵會纽干涉魏，”致光驗P出光面 之出光均勻瓣麵—致，軸w_，挪靡於供小 尺寸液麻剛幾咖㈣輪㈣目前尚無相關 技術可克服此問題。 又如圖2所示之构，於光概片3之麵2a (或抗靜電 5 M293444 M 2b)邊緣之無效發光區印刷一帶狀黑色遮蔽層2c，用以遮蔽或減少 月光模組邊緣處之漏光及明暗帶。但此種做法對於發生在有效發光區 域之明暗帶無法改善，且僅有遮蔽功能，無法控制其光線通過量，亦 無法將光線反射回原始光通路進行再利用，使整體發光效率下降。 【新型内容】 本創作主要目的係為提供一種可改善光線輝線現象之光學元 • #，在光學元件呈_暗獨(輝線)之任何區域(可·域及不可視區 域)之上或下表面上設置至少一微結構層，使通過微結構層之光通量 衣減，而達到減少或消除明暗不均(輝線)之改善功能，該微結構層可 施作於諸如光擴散膜片、擴散板、聚光片等等光學元件上。 本創作之又-目的在於，設置於光學元件上之觀構層可將光線 部分反射回原始光通路再次利用，可提升光學元件之整體發光效率。 φ 本創作之另一目的在於，設置於光學元件上之微結構層具有透光 性，當光線通過該微賴層時，將產生漫射現象，進而使該區域之發 光於各視野角更加均勻。 依本創作之-方面，-種可改善光線輝線現象之光學元件具有一 入光面及-出光面，可供光線經由該人光面至出光面而通過該光學元 件’該光學元件包含至少-微結構層，置於該人絲或出光面之一 面上，該至少-微結構層具有多個分開之微區域，該多個分開之微區 6 M293444 域形成-默圖案，用赋變該光學元件之透絲，藉㈣善光線輝 線現象。 【實施方式】When 0 is applied to the backlight module, the actual design and structure of the backlight module are green, so that the surface will interfere with Wei," , 靡 靡 供 供 供 供 供 供 供 供 供 供 供 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四The inactive light-emitting area of the edge prints a strip of black masking layer 2c for shielding or reducing light leakage and light and dark bands at the edge of the moonlight module. However, this method cannot improve the light and dark bands occurring in the effective light-emitting area, and only The shielding function can not control the light throughput, and can not reflect the light back to the original light path for reuse, so that the overall luminous efficiency is reduced. [New content] The main purpose of this creation is to provide an optical element that can improve the phenomenon of light rays. #, at least one microstructure layer is disposed on the upper surface or the lower surface of the optical element in any region (the field and the invisible region) of the optical element, so that the light flux through the microstructure layer is reduced, thereby reducing Or to eliminate the improvement function of the uneven brightness (light line), the microstructure layer can be applied to optical elements such as a light diffusion film, a diffusion plate, a concentrating sheet, etc. The purpose of the creation is to provide the optical element. The upper viewing layer can reflect the light portion back to the original light path for reuse, which can improve the overall luminous efficiency of the optical element. φ Another purpose of the creation is that the microstructure layer disposed on the optical element has light transmissivity. When the light passes through the micro-layer, a phenomenon of diffusion occurs, and the light of the region is more uniform in each viewing angle. According to the aspect of the present invention, an optical element capable of improving the phenomenon of light rays has a light incident surface and a light-emitting surface through which the light passes through the optical surface to the light-emitting surface, the optical element comprising at least a microstructure layer disposed on one side of the human filament or the light-emitting surface, the at least-microstructure layer having a plurality of separate micro-regions, the plurality of separate micro-regions 6 M293444 domains forming a silent pattern, which is used to transform the optical element of the optical element, and the (four) good light ray phenomenon.

為了讓本創作之上述之目的、功能特徵、和優點能更明確被瞭 解，下文將本創作以較佳之實例，並配合所附圖式，作詳細說明如下； 請參照圖3所示，本創作第—實施例之可改善光線輝線現象之光 擴散片4包含基片2、於基片2之—表面設置之擴散層2a、於基片2 該表面之姆表面設置之抗靜簡2b、於抗靜縣⑪面向基片2之 表面之相對面(入光面)設置之微結構層2d，或者微結構層％可設置 於擴散層2a面向基片2之表面之相對面（出光面）。 微結構層2d係依據實際輝線發生之區域而設置，其具有由下至 上排成多狀多個微區域2e，各微區域形狀_形且大小相同，各 列微區域中相鄰微區域間之間距以及相鄰兩列微區域間之間距自下 而上逐漸變化，形成疏密度逐漸變化之一特定圖案。 因此，藉由改變多條區域列之疏密度，使得微結構層如 具有相當之透光率，可改變光線之通過量，使該區域之透光率改變， 來控制輝賴域之光線分布，而麵齡賴轉線之改善目的。以 類似方式，藉由改變多個微區域2e之透明度亦可達成相同目的。 多個微區域2e可利用不透明或部分透明之抗紫外線油黑實 M293444 施網點印刷（dot printing)來形成，或利用包含但不僅限於聚 碳酸酯（pc)之半透明材料，經由塗佈（coating)、真空蒸鍍或 離子濺鍍等等加工方式來形成。 其次，由於微結構層Μ並非整體為黑色遮蔽物質，光線在通過 時會產生部份反射，使光線重咖到原始之光通路巾錄细，可提 升光擴散片4之整體發光效率，而且當光線通過由多個微區域^形 • 成之微結構層&時會產生漫射現象，進而使該區域之發光於各視野 角更加均勻。 圖4為本創作第二實施例之可改善光線輝線現象之光擴散片$， 其與圖3主要絲在於，微結構層料有由左至右排成多列之多個 微區域2g，各微區域形狀為方形，且各列中各微區域之大小由左至 右逐漸變小’各列微區域中相鄰微區域間之間距以及相鄰兩列微區域In order to make the above objects, functional features, and advantages of the present invention more clearly understood, the present invention will be described in detail below with reference to the accompanying drawings. The light diffusing sheet 4 of the first embodiment capable of improving the phenomenon of light rays comprises a substrate 2, a diffusion layer 2a disposed on the surface of the substrate 2, and an antistatic element 2b disposed on the surface of the surface of the substrate 2, The microstructure layer 2d provided by the anti-static county 11 facing the opposite surface (light-incident surface) of the surface of the substrate 2, or the microstructure layer % may be disposed on the opposite surface (light-emitting surface) of the surface of the diffusion layer 2a facing the substrate 2. The microstructure layer 2d is disposed according to the region where the actual glow line occurs, and has a plurality of micro-regions 2e arranged in a plurality of shapes from bottom to top, each micro-region having a shape _ shape and the same size, and between adjacent micro-regions in each column micro-region The pitch and the distance between adjacent two columns of micro-regions gradually change from bottom to top, forming a specific pattern in which the density gradually changes. Therefore, by changing the density of the plurality of regions, the microstructure layer can change the light transmittance by changing the light transmittance of the region, such as having a relatively high transmittance, to control the light distribution of the region. And the purpose of improving the face age. In a similar manner, the same purpose can be achieved by changing the transparency of the plurality of micro-regions 2e. The plurality of micro-regions 2e may be formed by opaque or partially transparent UV-resistant oil black M293444 dot printing, or by coating with a translucent material including but not limited to polycarbonate (pc). ), vacuum evaporation or ion sputtering, etc. to form. Secondly, since the microstructure layer is not a black masking substance as a whole, a partial reflection occurs when the light passes through, so that the light is transferred to the original light passage towel, and the overall luminous efficiency of the light diffusion sheet 4 can be improved. When the light passes through a plurality of micro-regions, the microstructure layer & will cause a phenomenon of diffusion, which makes the light of the region more uniform in each viewing angle. 4 is a light diffusing sheet $ which can improve the phenomenon of light rays in the second embodiment of the present invention, and the main thread of FIG. 3 is that the microstructure layer has a plurality of micro-areas 2g arranged in a plurality of rows from left to right, each of which The shape of the micro-region is square, and the size of each micro-region in each column gradually decreases from left to right. The distance between adjacent micro-regions in each column micro-region and the adjacent two columns of micro-regions

間之間距自左而右逐漸變化，形成疏密度逐漸變化之—特定圖宰，藉 此使該區域之透光率改變，來控制輝線區域之光線分布，即可達職 少或消除輝線之改善目的。 前述微結構層况或2f亦可應用於其他光學元件，例如聚光片。 一般聚光>1結構類似於前述光_，主要包含，及—猶， 聚光層設於該基狀-表面，與縣_對之另—基片表面做為入曰光 面’聚先獅吻鳴恤片係偏 8 M293444 光式聚光片時，前述微結構層可設置於出光面或入光面之一面上，當 聚光片係菱鏡式聚光片時，前述微結構層係設置於入光面上。 雖然本創作已利用上述之較佳實例詳細揭示，然其並非用以限定 本創作，凡热習此一創作者，在不脫離本創作之精神和範圍内，可進 行各種更動及修改，因此本創作之保護範圍係以後附之申請專利範圍 所界定者為準。 【圖式簡單說明】 圖1為習知光擴散片之示意結構圖； 圖2為習知具有邊緣遮蔽層之光擴散片的示意結構圖； 圖3為本創作第一實施例之可改善光線輝線現象之光擴散片的示 思結構圖； φ 圖4為本創作第二實施例之可改善光線輝線現象之光擴散片的示 意結構 圖。 【疋件符號說明】 1 光擴散片 2 基片 2a 擴散層 2b 抗靜電層 9 M293444 2c 遮蔽層 2d 微結構層 2e 多個微區域 2f 微結構層 2g 多個微區域 3 具遮蔽層之光擴散片 4 具微結構層之光擴散片 5 具微結構層之光擴散片The distance between the two gradually changes from left to right, forming a specific pattern of gradual change in density, thereby changing the light transmittance of the area to control the light distribution in the area of the ray line, so as to achieve less or eliminate the improvement of the ray line. purpose. The aforementioned microstructured layer condition or 2f can also be applied to other optical components, such as concentrating sheets. The general concentrating > 1 structure is similar to the above-mentioned light _, mainly including, and - y, the concentrating layer is disposed on the base-surface, and the surface of the _ _ _ _ _ _ _ _ _ When the lion kiss is a 8 M293444 optical concentrating sheet, the micro-structure layer may be disposed on one side of the light-emitting surface or the light-incident surface, and when the concentrating sheet is a smear-type concentrating sheet, the micro-structure layer It is set on the light incident surface. Although the present invention has been disclosed in detail using the above-described preferred examples, it is not intended to limit the present invention. Anyone who is interested in this creator can make various changes and modifications without departing from the spirit and scope of the present invention. The scope of protection of the creation is subject to the definition of the patent application scope attached. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic structural view of a conventional light diffusing sheet; FIG. 2 is a schematic structural view of a light diffusing sheet having an edge shielding layer; FIG. 3 is a schematic view of the first embodiment of the present invention. Schematic diagram of the light diffusing sheet; φ Fig. 4 is a schematic structural view of the light diffusing sheet which can improve the phenomenon of light rays in the second embodiment. [Description of the symbol] 1 Light diffuser 2 Substrate 2a Diffusion layer 2b Antistatic layer 9 M293444 2c Masking layer 2d Microstructure layer 2e Multiple microdomains 2f Microstructure layer 2g Multiple microdomains 3 Light diffusion with shielding layer Sheet 4 Light diffusing sheet with microstructure layer 5 Light diffusing sheet with microstructure layer

Claims (1)

M293444 九、申請專利範圍·· L -種可改善光線輝線現象之光學元件，其具有一入光面 一：出光面，可供光線經由該人光面至出光面而通過該 光學元件，該光學元件包含·· 至少—微結構層，設置於該入光面或出光面之一面上， »亥至少-微結構層具有多個分開之微區域，該多個分開 之微區域形成—預定®案，用収變該光學元件之透光 φ 率，藉以改善光線輝線現象。 2· ^申請專利範圍第丨項之光學元件，其中預定圖案之疏 密度係經設計，俾用以改變該光學元件之透光率，藉以 改善光線輝線現象。 3·如申請專利範圍第2項之光學元件，其中疏密度之設計 係藉由改變各微區域之形狀、大小或相鄰微區域間之間 距來達成。 4·如申請專利範圍第1項之光學元件，其中各微區域之透 Φ 明度係經設計，俾用以改變該光學元件之透光率，藉以 改善光線輝線現象。 5·如申請專利範圍第4項之光學元件，其中透明度之設計 係藉由改變各微區域之材料來達成。 6·如申請專利範圍第1項之光學元件，其中各微區域係印 刷網點。 7，如申請專利範圍第6項之光學元件，其中印刷網點係由 抗紫外線(UV)油墨形成。 8·如申請專利範圍第7項之光學元件，其中抗紫外線油墨 11 M293444 係不透明。 9·如申請專利範圍第7項之光學元件，其中抗紫外線油墨 係部分透明。 1〇·如申請專利範圍第1項之光學元件，其中各微區域係由 半透明材料形成。 申明專利範圍第1 0項之光學元件，其中該半透明材料 係聚碳酸酯（PC)。 如申请專利範圍第11項之光學元件，其中該半透明材料 U係以塗佈（coating)、真空蒸鍍或離子濺鍍方式來形成。 3·如申請專利範圍第丨至12項任一項之光學元件，其中光 學元件係光擴散片。 14. 如申請專利範圍第13項之光學元件，其中光擴散片包 括： 一基片，具有第一表面及與第一表面相對之第二表面； 於第一表面之擴散層，擴散層具有第三表面面向該 _ ""表面，且具有與第三表面相對之第四表面做為出光 面；以及 2於第二表面之抗靜電層，抗靜電層具有第五表面面 二第二表面’且具有與第五表面相對之第六表面做為入 光面， 其中至少一微結構層係設置於出光面或入光面之一面 上0 15. t申請專利範圍第1至12項任-項之光學元件，其中光 予凡件係聚光片。 12 M293444 16.如申請專利範圍第15項之光學元件，其中聚光片包含 基片，具有第一表面及與第一表面相對之第二表面， 第一表面做為入光面；以及 -設於第二表面之聚光層，聚光層具有第三表面面向第 二表面，i具有與第三表面相對之第四表面做為出光 面， 其中至少一微結構層係設置於出光面或入光面之一面 上。 17·如申請專利範圍第16項之光學元件，其中聚光片係偏光 式聚光片，且微結構層係設置於出光面或入光面之一 上。 、:明專#】|&圍第16項之光學元件，其中聚光片係菱鏡 式♦光片，且微結構層係設置於入光面上。 •種背光模組，具有如申請專利範圍第13項之光擴散 片。 鲁 2〇· -種背光模組，具有如申請專利範圍第14項之光擴散 片。 22 @光板、、且’具有如申請專利範圍帛15項之聚光片。 •一種背光模組，具有如中請專·圍第16項之聚光片。 •種$光棋組，具有如中請專職圍第Π項之偏光式聚 光片。 心㈣組’具有如巾請專利範圍第18項之菱鏡式聚 光片。 13M293444 IX. Patent Application Range·· L-type optical element which can improve the phenomenon of light ray, which has a light-incident surface: a light-emitting surface through which light can pass through the optical surface to the light-emitting surface through the optical element, the optical The component comprises: at least - a microstructure layer disposed on one side of the light incident surface or the light exit surface, the at least - the microstructure layer has a plurality of separate micro regions, and the plurality of separate micro regions are formed - a predetermined plan The light transmission φ ratio of the optical component is used to improve the light ray phenomenon. 2· ^ The optical component of the scope of the patent application, wherein the density of the predetermined pattern is designed to change the light transmittance of the optical component, thereby improving the phenomenon of light rays. 3. The optical component of claim 2, wherein the design of the density is achieved by changing the shape and size of each micro-region or the distance between adjacent micro-regions. 4. The optical component of claim 1, wherein the Φ brightness of each micro-region is designed to change the light transmittance of the optical component, thereby improving the phenomenon of light ray. 5. The optical component of claim 4, wherein the design of the transparency is achieved by changing the material of each micro-region. 6. An optical component as claimed in claim 1 wherein each micro-region is printed with dots. 7. The optical component of claim 6, wherein the printing dot is formed of an ultraviolet (UV) resistant ink. 8. An optical component as claimed in claim 7 wherein the UV resistant ink 11 M293444 is opaque. 9. The optical component of claim 7, wherein the ultraviolet resistant ink is partially transparent. 1) The optical component of claim 1, wherein each of the micro-regions is formed of a translucent material. An optical component of claim 10, wherein the translucent material is polycarbonate (PC). The optical component of claim 11, wherein the translucent material U is formed by coating, vacuum evaporation or ion sputtering. 3. The optical component according to any one of the preceding claims, wherein the optical component is a light diffusing sheet. 14. The optical component of claim 13, wherein the light diffusing sheet comprises: a substrate having a first surface and a second surface opposite to the first surface; and a diffusion layer on the first surface, the diffusion layer having a third surface facing the _ "" surface, and having a fourth surface opposite to the third surface as a light-emitting surface; and 2 an antistatic layer on the second surface, the antistatic layer having a fifth surface surface and a second surface And having a sixth surface opposite to the fifth surface as a light incident surface, wherein at least one of the microstructure layers is disposed on one of the light exit surface or the light incident surface 0 15. t Patent Application Nos. 1 to 12 - The optical component of the item, wherein the light is a concentrating sheet. The optical component of claim 15, wherein the concentrating sheet comprises a substrate having a first surface and a second surface opposite to the first surface, the first surface being a light incident surface; a concentrating layer on the second surface, the concentrating layer has a third surface facing the second surface, i has a fourth surface opposite to the third surface as a illuminating surface, wherein at least one microstructure layer is disposed on the illuminating surface or into On one side of the glossy surface. 17. The optical component of claim 16, wherein the concentrating sheet is a polarizing concentrating sheet, and the microstructure layer is disposed on one of the light emitting surface or the light incident surface. ,: Ming special #]|& The optical component of the 16th item, wherein the concentrating sheet is a Mirror type ♦ light sheet, and the microstructure layer is disposed on the light incident surface. • A backlight module having a light diffusing sheet as claimed in claim 13th. Lu 2〇--a backlight module having a light diffusing sheet as claimed in claim 14th. 22 @光板,, and 'has a concentrating sheet as in the patent application 帛15 item. • A backlight module with a concentrating sheet as in the 16th item. • A kind of light chess set with polarized spotlights such as the full-time entrant. The heart (four) group has a prismatic concentrating sheet as in the 18th article of the patent application. 13
TW094221787U 2005-12-15 2005-12-15 Optical device capable of improving mura phenomenon TWM293444U (en)

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TW094221787U TWM293444U (en) 2005-12-15 2005-12-15 Optical device capable of improving mura phenomenon
KR1020060093489A KR20070064239A (en) 2005-12-15 2006-09-26 Optical device capable of reducing mura phenomenon
JP2006278515A JP2007164146A (en) 2005-12-15 2006-10-12 Optical device capable of reducing heterogeneity of luminance

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JP2007164146A (en) 2007-06-28

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