TWI614553B - 包含吸收染料的液晶顯示裝置 - Google Patents

包含吸收染料的液晶顯示裝置 Download PDF

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TWI614553B
TWI614553B TW106100824A TW106100824A TWI614553B TW I614553 B TWI614553 B TW I614553B TW 106100824 A TW106100824 A TW 106100824A TW 106100824 A TW106100824 A TW 106100824A TW I614553 B TWI614553 B TW I614553B
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layer
liquid crystal
crystal display
dye
display device
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TW106100824A
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TW201736914A (zh
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趙洪烈
曺圭中
崔熔在
南賢哲
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愛思開希高科技材料有限公司
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    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133605—Direct backlight including specially adapted reflectors
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    • G02B6/0033—Means for improving the coupling-out of light from the light guide
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    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
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    • G02F1/1333—Constructional arrangements; Manufacturing methods
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
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    • B32B27/00—Layered products comprising a layer of synthetic resin
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    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/02—Physical, chemical or physicochemical properties
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    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
    • C09B62/00—Reactive dyes, i.e. dyes which form covalent bonds with the substrates or which polymerise with themselves
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  • Physics & Mathematics (AREA)
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  • Optics & Photonics (AREA)
  • Nonlinear Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mathematical Physics (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Liquid Crystal (AREA)
  • Organic Chemistry (AREA)
  • Polarising Elements (AREA)
  • Optical Filters (AREA)
  • Optical Elements Other Than Lenses (AREA)

Abstract

本發明涉及一種包含吸收染料的液晶顯示裝置，本發明的液晶顯示裝置能夠最大限度地透射從光源發出的純RGB波長，並吸收RGB波長以外的不必要的波長，從而能夠提高色純度及亮度。

Description

包含吸收染料的液晶顯示裝置
本發明涉及一種藉由在反射偏光膜中包含吸收染料而使得亮度及色純度的提高極大化的液晶顯示裝置。
以前，40英寸的電視為主流，而如今出現了很多購買50英寸甚至60英寸電視的消費者。這種尺寸的競爭結束後，便開始了解析度的競爭。直到一年前全高清(FHD，Full High Definition)電視還屬於高級型號，而如今超高清(UHD，Ultra High Definition)正在市場中急速推廣。
最近，顯示器市場正在從大面積、高解析度競爭發展為色彩競爭。由於這種原因，最近對具有優異色彩的顯示器製造方面的競爭呈上升趨勢。
液晶顯示裝置(liquid crystal display，LCD)是利用液晶(liquid crystal)的光學特性來顯示圖像，但由於顯示圖像的液晶面板自身為不能發光的非發光型元件，因此液晶顯示裝置具有包含液晶面板與在其背面配置的向液晶面板供給光的背光單元(back-light unit)的結構。
這種液晶顯示裝置不會使背光單元所提供的光全部透射過去，因此面板的亮度非常重要。為了提高面板的亮度，開發並使用各種膜，作為其代表性例子有反射偏光膜。
反射偏光膜通常為低折射率的層和高折射率的層交替層壓的多層膜形態，多層膜是藉由層間的干涉來引起選擇性地反射及/或透射特定波長的光的光學干涉。已知充分進行這種層壓，使其達到數十層到數百層以上，並緩慢改變相鄰層的厚度，則可以在所需要的波段中提高反射及/或偏光特性(參見韓國公開專利第1997-0700585號及國際公開第WO 1995-017303號)。
然而，為UHD播放而改變畫質規範的實際情況下，使用反射偏光膜時能夠改善亮度方面，但是在色純度方面更需要其它解決方案。尤其是需要一種能夠最小化亮度損失且能夠使色純度跨越性地提高至作為新規範水平的UHD播放水平的新技術。
因此，本發明的目的在於提供一種液晶顯示裝置，其透過最大限度地透射從光源發出的純RGB波長，並阻斷RGB波長以外的不必要的波長，從而能夠極大化地提高液晶顯示裝置的色純度且最大限度地增大亮度。
為了實現上述目的，本發明提供液晶顯示裝置，其包含背光單元及液晶面板；所述背光單元依次包含反射偏光膜、棱鏡片、擴散片、導光板及反射板中的兩種以上；所述反射偏光膜包含吸收染料，其中所述吸收染料包含羥基苯並***類及四氮雜卟啉類染料。
根據本發明，將包含羥基苯並***類及四氮雜卟啉類染料的吸收染料導入到反射偏光膜中，從而最大限度地透射從光源發出的純RGB波長，並阻斷RGB波長以外的不必要的波長而提高色域(gamut)，由此能夠製造出亮度及色純度得到極大化提高的液晶顯示裝置。
10‧‧‧液晶面板
101‧‧‧上偏光板
102‧‧‧第一黏附層
103‧‧‧液晶單元
104‧‧‧第二黏附層
105‧‧‧下偏光板
20‧‧‧背光單元
201‧‧‧反射偏光膜
202‧‧‧水平棱鏡片
203‧‧‧垂直棱鏡片
204‧‧‧擴散片
205‧‧‧導光板
206‧‧‧反射板
201A、201B‧‧‧反射偏光膜
201A-1‧‧‧第一聚酯層
201A-2‧‧‧第一黏附層
201A-3、201B-3‧‧‧芯層
201A-4‧‧‧第二黏附層
201A-5‧‧‧第二聚酯層
201A-6‧‧‧背面珠層
201B-1‧‧‧擴散珠層
201B-2‧‧‧擴散塗層
201B-4‧‧‧黏附層
201B-5‧‧‧聚酯層
201B-6‧‧‧背面珠層
202-1‧‧‧棱鏡圖案層
202-2‧‧‧棱鏡片基材
202-3‧‧‧背面塗層
202-4‧‧‧第三珠
204-1‧‧‧第一珠
204-2‧‧‧擴散塗層
204-3‧‧‧擴散片基材
204-4‧‧‧隱蔽塗層
204-5‧‧‧第二珠
206-1‧‧‧第四珠
206-2‧‧‧正面塗層
206-3‧‧‧反射板基材
第1圖為示出本發明一具體實施方式的液晶顯示裝置結構的模式圖。
第2a至2e圖為分別示出第2a及2b圖的反射偏光膜、第2c圖的水平棱鏡片、第2d圖的擴散片及第2e圖的反射板的結構的示意圖。
第3至17圖分別為實施例1-1至實施例3-6及比較例1和比較例2的液晶顯示裝置的發光光譜的圖。
第18圖為實施例3-1至實施例3-6的液晶顯示裝置的根據左右視角的色移(shift)測定結果。
本發明的液晶顯示裝置包含背光單元及液晶面板，其中背光單元依次包含反射偏光膜、棱鏡片、擴散片、導光板及反射板中的兩種以上；反射偏光膜包含吸收染料，其中吸收染料包含羥基苯並***類及四氮雜卟啉類染料。
第1圖中示出本發明一具體實施方式的液晶顯示裝置的結構。
參照第1圖，液晶面板10以依次層壓的形態包含上偏光板101、第一黏附層102、液晶單元(liquid crystal cell)103、第二黏附層104及下偏光板105，背光單元20可以以依次層壓的形態包含反射偏光膜201、水平棱鏡片202、垂直棱鏡片203、擴散片204、導光板205及反射板206。
參照第2a至2e圖，第2a圖的反射偏光膜201A可以以依次層壓的形態包含第一聚酯層201A-1、第一黏附層201A-2、芯層201A-3、第二黏附層201A-4、第二聚酯層201A-5及背面珠層201A-6。此外，第2b圖的反射偏光膜201B可以以依次層壓的形態包含擴散珠層201B-1、擴散塗層201B-2、芯層201B-3、黏附層201B-4、聚酯層201B-5及背面珠層201B-6。此外，第2c圖的水平棱鏡片202可以在棱鏡片基材202-2的一面上具備棱鏡圖案層202-1，在相反面上可以具備具有第三珠202-4的背面塗層202-3。此外，垂直棱鏡片203也可以具有與水平棱鏡片202相同的層結構。進一步地，第2d圖的擴散片204可以在擴散片基材204-3的一面上具備具有第一珠204-1的擴散塗層204-2，在相反面上可以具備具有 第二珠204-5的隱蔽塗層204-4。此外，第2e圖的反射板206可以在反射板基材206-3的一面上具備具有第四珠206-1的正面塗層206-2。
但是，本發明的液晶顯示裝置並不限定於上述結構，而是可以根據需要進行多種變形。
觀察液晶顯示裝置的基本原理可知，從光源發出的光經過導光板205被引導至液晶面板10方向後，透過擴散片204的同時向垂直於面的水平/垂直方向擴散，從而使得光亮度急劇下降，因此使從擴散片204發出的光透過棱鏡片，從而阻擋光從出光面正面以外的方向出去，並提高光定向性而縮小視角，由此能夠增大向背光出光面正面方向的亮度。接著，使透過棱鏡片(水平棱鏡片202及/或垂直棱鏡片203)的光透過反射偏光膜201，從而透過光的回收利用(recycling)使亮度增大得到極大化。
根據本發明，背光單元20依次包含反射偏光膜201、棱鏡片、擴散片204、導光板205及反射板206中的兩種以上，反射偏光膜201包含吸收染料，其中吸收染料包含羥基苯並***類及四氮雜卟啉類染料。即，根據包含吸收染料的層的位置，亮度損失量會不同，而本發明的技術結構為，在背光單元20結構層中，在離液晶面板10近的反射偏光膜201中設有包含吸收染料的層。
根據本發明的一具體實施方式，反射偏光膜201依次包含第一聚酯層201A-1、第一黏附層201A-2、芯層201A-3、第二黏附層201A-4、第二聚酯層201A-5及背面珠層201A-6(第2a圖的結構)，第一聚酯層201A-1的一面或兩面、芯層201A-3的一面或兩面及第二聚酯層201A-5的一面或兩面中的一個以上的位置上可以具有包含吸收染料的 塗層，或者在第一黏附層201A-2內、第二黏附層201A-4內或兩者中均可以包含吸收染料。
根據本發明的另一具體實施方式，反射偏光膜201依次包含擴散珠層201B-1、擴散塗層201B-2、芯層201B-3、黏附層201B-4、聚酯層201B-5及背面珠層201B-6(第2b圖的結構)，芯層201B-3的一面或兩面及聚酯層201B-5的一面或兩面中的一個以上的位置上可以具有包含吸收染料的塗層，或者在擴散塗層201B-2內、黏附層201B-4內或兩者中均可以包含吸收染料。
例如，含吸收染料的塗層及黏附層201B-4可以分別透過濕式塗布來形成。具體地，含吸收染料的塗層及黏附層201B-4的厚度可以為1~100μm、2~100μm、2~15μm或15~25μm。
含吸收染料的塗層可以包含黏合劑樹脂，黏合劑樹脂可例舉如選自聚酯類、丙烯酸類、聚氨酯類、三聚氰胺類、聚乙烯醇類及惡唑啉類黏合劑樹脂中的一種以上的樹脂。具體地，黏合劑樹脂可以為丙烯酸類黏合劑樹脂。
含吸收染料的黏附層201B-4可以進一步包含減壓性黏合劑。減壓性黏合劑可例舉如選自丙烯酸類、氨基甲酸乙酯類、環氧類及矽類黏合劑中的一種以上的黏合劑。具體地，減壓性黏合劑可以為丙烯酸類黏合劑。
具體地，以含吸收染料的塗層或黏附層201B-4總重量為標準，吸收染料的含量可以為0.01~10重量%，較佳可以為0.05~7重量%。
聚酯層201A-1、201B-5可以為聚碳酸酯膜或聚對苯二甲酸乙二醇酯膜。具體地，聚對苯二甲酸乙二醇酯膜可以為經過單軸拉伸或定向角得到控制的膜。
芯層201A-3、201B-3可以為折射率不同的第一聚合物層和第二聚合物層交替層壓形成而選擇性地反射及透射特定波長範圍的可見光的層壓膜。例如，第一聚合物層和第二聚合物層可以相互直接接觸來層壓，或者透過介入附加的聚合物層來層壓。具體地，層壓可以為100~1,000層，更具體可以為300~500層。
第一聚合物層可以由透過拉伸而使折射率發生變化的聚酯組成。具體地，第一聚合物層可以為聚對苯二甲酸乙二醇酯膜或聚對苯二甲酸萘二醇酯(polynaphthalene terephthalate)膜。
第二聚合物層可以由拉伸所引起的折射率變化較小的聚酯組成。具體地，第二聚合物層可以為共聚聚對苯二甲酸萘二醇酯膜。更具體地，共聚聚對苯二甲酸萘二醇酯可以由包含萘二羧酸及二甲基對苯二甲酸的二羧酸成分與包含乙二醇的二醇成分共聚合而成。
第一聚合物層和第二聚合物層分別可以具有0.05~0.5μm的厚度，具體可以具有0.05~0.3μm的厚度。第一聚合物層和第二聚合物層的厚度可以連續變化，也可以階梯性地變化。
第一聚合物層沿著單軸拉伸(X軸方向)，從而在單軸拉伸方向(X軸方向)上具有高折射率，因此與第二聚合物層的折射率差會沿著拉伸方向變大。因此，第一聚合物層與第二聚合物層相互交替層壓而形成的芯層201A-3、201B-3可以對第一偏光的光具有反射特性。
另一方面，在膜面內，沿著垂直於單軸拉伸方向的另外的軸(Y軸方向)方向，第一聚合物層和第二聚合物層之間不會產生折射率差，因此芯層201A-3、201B-3可以對第二偏光的光具有透射特性。
棱鏡片可以為水平棱鏡片202、垂直棱鏡片203或它們組合的複合棱鏡片。此外，棱鏡片可以為包含複數個半球形微透鏡的片材。
吸收染料包含羥基苯並***(hydroxy benzotriazole)類及四氮雜卟啉(tetra aza porphyrin)類染料，還可以進一步包含吸收480~510nm或560~610nm的波段的染料。具體地，染料可以為選自花青(cyanine)類、吡咯次甲基(pyrrol methin)類、若丹明(rhodamin)類及硼二吡咯亞甲基(boron dipyrromethene)類染料中的一種以上。更具體地，吸收染料可以為羥基苯並***類、花青類及四氮雜卟啉類染料的組合。
液晶面板10可以依次包含上偏光板101、第一黏附層102、液晶單元103、第二黏附層104及下偏光板105。
構成本發明的液晶顯示裝置的背光單元20及液晶面板10的各個結構層可以具有本領域中通常允許的材質、厚度、形態等，並且可以根據需要進行多種變形。
如上所述，本發明的包含含吸收染料的反射偏光膜201的液晶顯示裝置可以最大限度地透射從光源發出的純RGB波長，並阻斷RGB波長以外的不必要的波長，從而可以提供得到提高的色域(gamut)(色純度)及亮度。
實施例
下面，將透過下述實施例更詳細地說明本發明。但是，下述實施例僅用於例示本發明，本發明的範圍並不限定於此。
實施例1-1
混合25重量%的丙烯酸黏合劑樹脂(綜研化學株式會社(Soken)製造，GS1000)和75重量%的甲基乙基酮，從而製備溶液，然後以溶液100重量份計，添加0.05重量份的吸收染料(SK化學公司，SK-d593，主吸收波段：560~610nm)，從而製備含吸收染料的塗層組合物。
利用邁爾棒(mayer bar)在單軸拉伸聚對苯二甲酸乙二醇酯(PET)膜(平均厚度：100μm，定向角：3°)的一面上塗布含吸收染料的塗層組合物，並進行乾燥及固化而形成厚度為5μm的含吸收染料的塗層。之後，在單軸拉伸PET膜的另一面上黏合芯層201A-3、201B-3，並在芯層201A-3、201B-3的另一面上黏合普通PET膜(製造公司：SKC，產品名：V5400)。透過珠塗布法(bead coating)對普通PET膜的另一面進行處理，使得背面珠層201A-6、201B-6的霧度為35%，從而製造反射偏光膜201(參見第2a圖)，並將反射偏光膜201應用到背光單元20(BLU)中。此外，BLU的結構為反射偏光膜201、水平棱鏡片202、垂直棱鏡片203、擴散片204、導光板205及反射板206依次層壓的結構。
此外，使用上偏光板101、第一黏附層102、液晶單元103、第二黏附層104及下偏光板105依次層壓的結構的液晶面板10來製造液晶顯示裝置(參見第1圖)。
實施例1-2
使用擴散珠層201B-1、擴散塗層201B-2、芯層201B-3、黏附層201B-4、聚酯層201B-5(普通PET膜，製造公司：SKC，產品名：V5400)及背面珠層201B-6依次層壓的結構的反射偏光膜201(參見第2b圖)，並在實施例1-1的含吸收染料的塗層組合物中，以溶液100重量份計，進一步添加15重量份的珠(製造公司：積水化學工業株式會社(Sekisui)，產品名：MBX-40)，將其作為擴散塗層201B-2、204-2(含吸收染料)和擴散珠層201B-1，除此之外，採用與實施例1-1相同的方法來製造液晶顯示裝置。
比較例1
除了沒有添加吸收染料之外，製造與實施例1-1具有相同結構的液晶顯示裝置。
實驗例1
利用輻射計(radiometer，CS-2000；美能達(Minolta))對實施例1-1、實施例1-2及比較例1的液晶顯示裝置進行光譜的變化及特性測定，並將其結果顯示於表1及第3至5圖中。色域是顯示色彩再現面積。
Figure TWI614553BD00001
Figure TWI614553BD00002
如表1及第3至5圖中所示，與反射偏光膜201中沒有包含吸收染料的比較例1相比，包含吸收染料的實施例1-1及實施例1-2的液晶顯示裝置顯示出得到提高的色純度。
實施例2-1至實施例2-5
如下述表2中所示，吸收染料(SK化學公司，SK-d593)的使用量不同之外，採用與實施例1-2相同的方法來製造液晶顯示裝置。
Figure TWI614553BD00003
比較例2
除了沒有添加吸收染料之外，製造與實施例2-1具有相同結構的液晶顯示裝置。
實驗例2
採用與實驗例1相同的方法對實施例2-1至實施例2-5及比較例2的液晶顯示裝置進行光譜的變化及特性測定，並將其結果顯示於表3及第6至11圖中。
Figure TWI614553BD00004
Figure TWI614553BD00005
如表3及第6至11圖中所示，吸收染料的使用量不同時，色純度的提高水平會不同。由上述事實可知，透過調節吸收染料的使用量，使得其符合BLU特性，從而能夠使液晶顯示裝置的亮度及色純度特性得到極大化。
實施例3-1至實施例3~6
如第4圖中所示，除了調節背面珠層的珠含量(以溶液100重量份為標準)來改變背面珠層的霧度之外，採用與實施例1-2相同的方法來製造液晶顯示裝置。
Figure TWI614553BD00006
實驗例3
採用與實驗例1相同的方法對實施例3-1至實施例3-6及比較例2的液晶顯示裝置進行光譜的變化及特性測定，並將其結果顯示在表5及第12至17圖中。
此外，採用相同的方法來測定根據左右視角的色移(shift)，並將其結果顯示在第18圖中。
Figure TWI614553BD00007
如表5及第12至17圖所示，根據背面珠層的霧度水平，色域的水平會得到維持，亮度會得到提高。
此外，如第18圖所示，背面珠層的霧度水平不同時，根據左右視角的色移(shift)會不同，背面珠層的霧度越低(實施例3-6的情況)，則根據左右視角的色移會得到改善。由此可知，考慮到亮度損失及色移時，可根據應用來調整最佳條件。
因此可以確認，本發明的液晶顯示裝置最大限度地透射從光源發出的純RGB波長，並阻斷RGB波長以外的不必要的波長，從而提高色域，由此使得色純度的提高及亮度得到極大化。
10‧‧‧液晶面板
101‧‧‧上偏光板
102‧‧‧第一黏附層
103‧‧‧液晶單元
104‧‧‧第二黏附層
105‧‧‧下偏光板
20‧‧‧背光單元
201‧‧‧反射偏光膜
202‧‧‧水平棱鏡片
203‧‧‧垂直棱鏡片
204‧‧‧擴散片
205‧‧‧導光板
206‧‧‧反射板

Claims (9)

  1. 一種液晶顯示裝置，其包含：一背光單元；以及一液晶面板；該背光單元依次包含一反射偏光膜、一棱鏡片、一擴散片、一導光板及一反射板中的兩種以上，該反射偏光膜包含一吸收染料，其中該吸收染料包含羥基苯並***類及四氮雜卟啉類染料；其中，該吸收染料包含吸收480-510nm或560-610nm的波段的一染料。
  2. 如申請專利範圍第1項所述之液晶顯示裝置，其中該反射偏光膜依次包含一第一聚酯層、一第一黏附層、一芯層、一第二黏附層、一第二聚酯層及一背面珠層，該第一聚酯層的一面或兩面、該芯層的一面或兩面及該第二聚酯層的一面或兩面中的一個以上的位置上具有包含該吸收染料的一塗層，或者在該第一黏附層內、該第二黏附層內或兩者中均包含該吸收染料。
  3. 如申請專利範圍第1項所述之液晶顯示裝置，其中該反射偏光膜依次包含一擴散珠層、一擴散塗層、一芯層、一黏附層、一聚酯層及一背面珠層，該芯層的一面或兩面及該聚酯層的一面或兩面中的一個以上的位置上具有包含該吸收染料的塗層，或者在該擴散塗層內、該黏附層內或兩者中均包含該吸收染料。
  4. 如申請專利範圍第2項或第3項所述之液晶顯示裝置，其中該芯層為折射率不同的一第一聚合物層和一第二聚合物層交替層壓形成而選擇性地反射及透射特定波長範圍的可見光的一層壓膜。
  5. 如申請專利範圍第1項至第3項中任一項所述之液晶顯示裝置，其中該吸收染料進一步包含吸收480~510nm或560~610nm的波段的一染料。
  6. 如申請專利範圍第5項所述之液晶顯示裝置，其中該染料為選自花青類、吡咯次甲基類、若丹明類及硼二吡咯亞甲基類染料中的一種以上。
  7. 如申請專利範圍第6項所述之液晶顯示裝置，其中該吸收染料為羥基苯並***類、花青類及四氮雜卟啉類染料的組合。
  8. 如申請專利範圍第2項或第3項所述之液晶顯示裝置，其中以含該吸收染料的該塗層或該黏附層總重量為標準，該吸收染料的含量為0.01~10重量%。
  9. 如申請專利範圍第1項所述之液晶顯示裝置，其中該液晶面板依次包含上一偏光板、一第一黏附層、一液晶單元、一第二黏附層及一下偏光板。
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