CN104678673A - 前光模块及电子纸显示装置 - Google Patents

前光模块及电子纸显示装置 Download PDF

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CN104678673A
CN104678673A CN201310622121.5A CN201310622121A CN104678673A CN 104678673 A CN104678673 A CN 104678673A CN 201310622121 A CN201310622121 A CN 201310622121A CN 104678673 A CN104678673 A CN 104678673A
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陈柏洲
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Hongfujin Precision Industry Shenzhen Co Ltd
Hon Hai Precision Industry Co Ltd
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Hongfujin Precision Industry Shenzhen Co Ltd
Hon Hai Precision Industry Co Ltd
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Priority to TW102145228A priority patent/TW201525599A/zh
Priority to US14/556,362 priority patent/US9323125B2/en
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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
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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
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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 
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    • G09G2360/144—Detecting light within display terminals, e.g. using a single or a plurality of photosensors the light being ambient light

Abstract

本发明涉及一种前光模块，其包括一第一透明基板、一第一透明导电层、一离子存储层、一电解质层、一电致变色层、一第二透明导电层、一第二透明基板及一光源。该第一透明导电层贴附在该第一透明基板上。该离子存储层贴附在该第一透明导电层上。该电解质层位于该离子存储层上。该电致变色层位于该电解质层上。该第二透明导电层贴附在该电致变色层上。该第二透明基板贴附在该第二透明导电层上。该光源位于第一透明基板的侧面及该第二透明基板的侧面。该第二透明基板朝向或背离该第二透明导电层的表面设置有多个微结构。本发明还涉及一种包含该前光模块的电子纸显示装置。

Description

前光模块及电子纸显示装置
技术领域
本发明涉及显示领域，特别涉及一种前光模块及一种包含该前光模块的电子纸显示装置。
背景技术
现有技术中，反射型电子纸显示装置本身没有背光模块，需要将环境光反射使人眼看到电子纸显示装置显示的画面。在环境光较弱的情况下，由于光亮度不强，电子纸显示装置的显示效果不佳，使用者阅读吃力，通常需要在电子纸显示装置的出光面一侧设置光源及前置导光板，光源发出的光线被该前置导光板引导至电子纸显示装置中以对较弱的环境光进行补强，提高电子纸显示装置的显示效果，便于使用者阅读。然而，在环境光较强的情况下，使用者会感到刺眼，产生视觉疲劳。因此，目前电子纸显示装置无法让使用者在环境光较弱及较强的情况下都能获得好的使用体验。
发明内容
有鉴于此，有必要提供一种克服上述缺陷的前光模块及包含该前光模块的电子纸显示装置。
一种前光模块包括一第一透明基板、一第一透明导电层、一离子存储层、一电解质层、一电致变色层、一第二透明导电层、一第二透明基板及一光源。该第一透明导电层贴附在该第一透明基板上。该离子存储层贴附在该第一透明导电层上。该电解质层位于该离子存储层上。该电致变色层位于该电解质层上。该第二透明导电层贴附在该电致变色层上。该第二透明基板贴附在该第二透明导电层上。该光源位于第一透明基板的侧面及该第二透明基板的侧面。该第二透明基板具有一第一表面及一第二表面。该第一表面位于该第二透明基板朝向该第二透明导电层的一侧，该第二表面位于该第二透明基板背离该第二透明导电层的一侧。该第一表面或该第二表面上设置有多个微结构，该第二表面为出光面。
一种电子纸显示装置包括如上所述的前光模块以及一电子纸显示模块。该电子纸显示模块包括一底部基板、一驱动电极层、一电泳层、一对置电极层以及一第三透明基板。该电泳层位于该驱动电极层与该对置电极层之间，该驱动电极层贴附在该底部基板上，该对置电极层贴附在该第三透明基板上，该第一透明基板位于该第三透明基板背离该对置电极的一侧。
本发明提供的该电子纸显示装置采用该前光模块，在环境光较弱的情况下，可以开启该光源并利用该多个微结构将光源发出的光反射至该电子纸显示模块，以提高该电子纸显示模块的光亮度。在环境光较强的情况下，关闭该光源并对该第一透明导电层级该第二透明导电层施加电压，以改变该电致变色层级该离子存储层对光线的穿透率，以减少进入该电子纸显示模块的光线。如此，该电子纸显示装置利用该前光模块能够使使用者在环境光较弱及较强的情况下都能获得好的使用体验。
附图说明
图1为本发明实施方式提供的电子纸显示装置的示意图。
主要元件符号说明
电子纸显示装置 100
前光模块 200
电子纸显示模块 300
第一透明基板 10
第一透明导电层 20
离子存储层 30
电解质层 40
电致变色层 50
第二透明导电层 60
第二透明基板 70
第一表面 72
第二表面 74
微结构 75
光源 80
底部基板 91
驱动电极层 93
电泳层 95
对置电极层 97
第三透明基板 99
如下具体实施方式将结合上述附图进一步说明本发明。
具体实施方式
下面结合附图将对本发明实施方式作进一步的详细说明。
如图1所示，本发明实施方式提供的电子纸显示装置100包括一个前光模块200以及一个电子纸显示模块300。
该前光模块200包括一个第一透明基板10、一个第一透明导电层20、一个离子存储层30、一个电解质层40、一个电致变色层50、一个第二透明导电层60、一个第二透明基板70以及一个光源80。
该前光模块200位于该电子纸显示模块300的一侧，该第一透明基板10、该第一透明导电层20、该离子存储层30、该电解质层40、该电致变色层50、该第二透明导电层60及该第二透明基板70自远离该电子纸显示模块300的方向依次堆叠。即，该第一透明基板10位于该电子纸显示模块300的一侧。该第一透明导电层20贴附在该第一透明基板10上。该离子存储层30贴附在该第一透明导电层20上。该电解质层40位于该离子存储层30上。该电致变色层50位于该电解质层40上。该第二透明导电层60贴附在该电致变色层50上。该第二透明基板70贴附在该第二透明导电层60上。该第一透明基板10及该第二透明基板70由透明玻璃或透明塑料材料制成。该第一透明导电层20及该第二透明导电层60为铟锡氧化物（ITO）。该电解质层40为包含有高氯酸锂、高氯酸钠等的溶液或固体电解质材料。该电致变色层50采用阳极氧化变色材料，该离子存储层30采用阴极还原变色材料。该离子存储层30、该电解质层40及该电致变色层50均能够使光线透过。该第一透明导电层20与该第二透明导电层60分别连接一电源的两端。
该第二透明基板70具有一个第一表面72以及一个第二表面74。该第二透明导电层60贴附在该第一表面72上。该第二表面74位于该第二透明基板70背离该第二透明导电层60的一侧。本实施方式中，该第二表面74上设置有多个微结构75，该多个微结构75为半圆形网点。在其它实施方式中，也可将该多个微结构75形成在该第一表面72上，该多个微结构75也可为V型凹槽等。若该第二透明基板70为透明塑料材料，在利用射出成型等方法制造该第二透明基板70时，即可利用转印方式在该第二透明基板70上成型该多个微结构75。若该第二透明基板70由透明玻璃制成，其可通过在一个由透明玻璃制成的平板上贴附具有该多个微结构75的薄膜而形成。
该光源80位于该第一透明基板10及该第二透明基板70的侧面。由该光源80发出的光线能够经由该第一透明基板10及该第二透明基板70的侧面入射至该第一透明基板10及该第二透明基板70中。由该光源80发出的光线也可经由该第一透明导电层20、该离子存储层30、该电解质层40、该电致变色层50及该第二透明导电层60的侧面入射至该第一透明导电层20、该离子存储层30、该电解质层40、该电致变色层50及该第二透明导电层60中。本实施方式中，该光源80为发光二极管（light emitting diode, LED）光源。
该电子纸显示模块300包括一个底部基板91、一个驱动电极层93、一个电泳层95、一个对置电极层97以及一个第三透明基板99。
该电子纸显示模块300位于该前光模块200中该第一透明基板10的一侧，该底部基板91、该驱动电极层93、该电泳层95、该对置电极层97及该第三透明基板99朝靠近该前光模块200的方向依次堆叠。即，该第三透明基板99位于该前光模块200的一侧。该驱动电极层93贴附在该底部基板91上。该对置电极层97贴附在该第三透明基板99上。该电泳层95位于该驱动电极层93与该对置电极层97之间。该电泳层95包含有多个由正电荷粒子及负电荷粒子组成的微囊体。该正电荷粒子与该负电荷粒子分别具有不同的颜色。该对置电极层97为透明导电材料，如铟锡氧化物（ITO）等。该第三透明基板99由透明玻璃或透明塑料材料制成。该驱动电极层93与该底部基板91为非透明的，该驱动电极层93与该底部基板91的表面对光线最好具有反射特性。该第一透明基板10位于该第三透明基板99背离该对置电极层97的一侧。该驱动电极层93与该对置电极层97分别连接一电源的两端。
工作时，对该驱动电极层93及该对置电极层97施加电压，使该驱动电极层93与该对置电极层97之间产生电压差。电泳层95中的微囊体中的正电荷粒子及负电荷粒子在该电压差的作用下分别移动靠近至对应的电极层，以显示画面。在环境光较弱的情况下，可以开启该光源80，由该光源80发出的光线经由该第一透明基板10及该第二透明基板70的侧面入射至该第一透明基板10及该第二透明基板70中。其中，入射至该微结构75的光线能够被该多个微结构75反射至该电子纸显示模块300中，从而提高该电子纸显示模块300的光亮度，使使用者能够清楚地看到该电子纸显示装置100显示的画面内容。在环境光较强的情况下，则关闭该光源80，并对该第一透明导电层20及该第二透明导电层60施加电压。该电致变色层50与该离子存储层30在电压的作用下发生氧化还原反应进而使该电致变色层50与该离子存储层30的颜色改变并使该电致变色层50与该离子存储层30对环境光的穿透率改变，即降低环境光的穿透率。如此，对该第一透明导电层20及第二透明导电层60施加适当的电压后即可减少环境光穿过该电致变色层50与该离子存储层30，进而减少环境光进入该电子纸显示模块300，从而使得使用者在环境光较强的情况的不会觉得刺眼。
本发明提供的该电子纸显示装置100在该电子纸显示模块300的上方设置该前光模块200，在环境光较弱的情况下，可以开启该光源80，并利用该多个微结构75将光源发出的光反射至该电子纸显示模块300，以提高该电子纸显示模块300的光亮度，方便使用者观看。在环境光较强的情况下，关闭该光源80并对该第一透明导电层20及该第二透明导电层60施加电压，以改变该电致变色层50及该离子存储层30对光线的穿透率，以减少进入该电子纸显示模块300的光线。如此，该电子纸显示装置100利用该前光模块200能够使使用者在环境光较弱及较强的情况下都能获得好的使用体验。
虽然本发明已揭示具体实施方式，但其并非用以限定本发明，任何本领域的技术人员，在不脱离本发明的构思和范围的前提下所作出的等同结构或步骤的置换，或依本发明专利保护范围所作的等同变化与修饰，皆应仍属本专利涵盖的范畴。

Claims (9)

1.一种前光模块，包括：
一第一透明基板；
一第一透明导电层，该第一透明导电层贴附在该第一透明基板上；
一离子存储层，该离子存储层贴附在该第一透明导电层上；
一电解质层，该电解质层位于该离子存储层上；
一电致变色层，该电致变色层位于该电解质层上；
一第二透明导电层，该第二透明导电层贴附在该电致变色层上；
一第二透明基板，该第二透明基板贴附在该第二透明导电层上；
一光源，该光源位于第一透明基板的侧面及该第二透明基板的侧面，该第二透明基板具有一第一表面及一第二表面，该第一表面位于该第二透明基板朝向该第二透明导电层的一侧，该第二表面位于该第二透明基板背离该第二透明导电层的一侧，该第一表面或该第二表面上设置有多个微结构，该第二表面为出光面。
2.如权利要求1所述的前光模块，其特征在于，该第二表面上设置有该多个微结构。
3.如权利要求1所述的前光模块，其特征在于，该第一表面上设置有该多个微结构。
4.如权利要求1所述的前光模块，其特征在于，该光源为发光二极管光源。
5.如权利要求1所述的前光模块，其特征在于，该多个微结构为半圆形网点或V型凹槽。
6.一种电子纸显示装置，包括如权利要求1所述的前光模块以及一电子纸显示模块，该电子纸显示模块包括一底部基板、一驱动电极层、一电泳层、一对置电极层以及一第三透明基板，该电泳层位于该驱动电极层与该对置电极层之间，该驱动电极层贴附在该底部基板上，该对置电极层贴附在该第三透明基板上，该第一透明基板位于该第三透明基板背离该对置电极的一侧。
7.如权利要求6所述的电子纸显示装置，其特征在于，该第二表面上设置有该多个微结构。
8.如权利要求6所述的电子纸显示装置，其特征在于，该第一表面上设置有该多个微结构。
9.如权利要求6所述的电子纸显示装置，其特征在于，该多个微结构为半圆形网点或V型凹槽。
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