CN103809343A - 电子纸显示器 - Google Patents
电子纸显示器 Download PDFInfo
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- CN103809343A CN103809343A CN201210518125.4A CN201210518125A CN103809343A CN 103809343 A CN103809343 A CN 103809343A CN 201210518125 A CN201210518125 A CN 201210518125A CN 103809343 A CN103809343 A CN 103809343A
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- conductive pattern
- paper display
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- electric paper
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- G02F1/167—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 translational movement of particles in a fluid under the influence of an applied field characterised by the electro-optical or magneto-optical effect by electrophoresis
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Abstract
本发明提供一种电子纸显示器,包括:电子纸面板;导光片,设置于电子纸面板上,具有远离于电子纸面板的第一表面和相对于第一表面的第二表面;导电图案结构层,设置于导光片上;光源,设置于导光片的一侧,其中导光片的第一表面为图案化表面,图案化表面用以将光源提供的光线借由图案化表面反射或散射至电子纸面板。本发明的电子纸显示器的总厚度可较现有电子纸显示器的总厚度减少,且电子纸显示器可节省相关工艺,且可兼顾透光度、对比度、重量与成本等要求。
Description
技术领域
本发明涉及一种电子纸显示器,特别涉及一种兼顾厚度、重量与成本的电子纸显示器。
背景技术
电子纸显示器(electronic paper display,EPD)因特性问题,并无背光板,需依靠例如自然光或灯光的环境光源照射于其上以利于使用者观看,所以电子纸无法在低照度情况下使用。另外,为符合使用者的一般使用方式,电子纸显示器不适合使用鼠标作为指向装置,也不适合使用实体键盘当输入装置。因此,现今的电子纸显示器是于电子纸上方加包括导光板和光源的一前导光模块,以解决低照度时阅读问题,并且将电子纸显示器设计为手持装置,且以触控方式为手持装置的主要输入方式。然而,现有电子纸显示器仍无法兼顾透光度、对比度、重量、厚度与成本等要求。
因此,在此技术领域中,有需要一种电子纸显示器,以解决现有电子纸显示器的缺点。
发明内容
本发明的目的是提供一种电子纸显示器,以解决现有技术存在的问题。
为实现上述目的,本发明的实施例提供一种电子纸显示器,上述电子纸显示器包括电子纸面板;导光片,设置于电子纸面板上,其具有远离于电子纸面板的第一表面和相对于第一表面的第二表面;导电图案结构层,设置于导光片上;光源,设置于导光片的一侧,其中导光片的第一表面为图案化表面,图案化表面用以将光源提供的光线反射或散射至上述电子纸面板。
本发明的电子纸显示器的总厚度可较现有电子纸显示器的总厚度减少,且电子纸显示器可节省相关工艺,且可兼顾透光度、对比度、重量与成本等要求。
附图说明
图1为本发明一实施例的电子纸显示器的剖面示意图。
图2为本发明另一实施例的电子纸显示器的剖面示意图。
图3为本发明又另一实施例的电子纸显示器的剖面示意图。
图4为本发明其他实施例的电子纸显示器的剖面示意图。
其中,附图标记说明如下:
500a、500b、500c、500d~电子纸显示器;
200~电子纸面板; 202~光学胶层;
204a、204b、204c、204d~导电图案结构层;
206~导光片; 208~第一表面;
210~第二表面; 212~粘着层;
214~前框; 218~基板;
220~上导电图案层; 222~下导电图案层;
224~第一基板; 226~第二基板;
230~扩散片; 232~光源;
234~光线; 238、242、244~上表面;
240~下表面;
H1、H2、H3、H4~总厚度。
具体实施方式
以下以各实施例详细说明并伴随着附图说明的范例,作为本发明的参考依据。在附图或说明书描述中,相似或相同的部分皆使用相同的图号。且在附图中,实施例的形状或是厚度可扩大,并以简化或是方便标示。再者,附图中各元件的部分将以分别描述说明之,值得注意的是,图中未绘示或描述的元件,为本领域普通技术人员所知的形式,另外,特定的实施例仅为揭示本发明使用的特定方式,其并非用以限定本发明。
本发明实施例提供一种电子纸显示器,其将前导光模块和触控面板整合在一起,以大为降低电子纸显示器的总高度、重量、工序和成本。图1为本发明一实施例的电子纸显示器500a的剖面示意图。如图1所示,电子纸显示器500a包括由一前框214包围的一电子纸面板200、一导光片206、一导电图案结构层204a、一扩散片230以及一光源232。在本发明一实施例中,电子纸面板200可为例如电泳显示面板或胆固醇液晶显示面板的一反射式面板。如图1所示,导光片206设置于电子纸面板200上,且可借由一粘着层212固定于前框214中,其具有远离于电子纸面板200的一第一表面208和相对于第一表面208的一第二表面210。在本发明一实施例中,导光片206的材质可包括玻璃或塑胶。另外,在本发明一实施例中,可于导光片206的远离于电子纸面板200的第一表面208(或是第二表面210)上做光学结构处理,举例来说,可于电子纸面板200的第一表面208或是第二表面210上印刷反射油墨或贴附一散射片(图未显示),使第一表面208或是第二表面210成为一图案化表面。或者,可对电子纸面板200的第一表面208或是第二表面210进行例如化学蚀刻或激光蚀刻工艺,使第一表面208或是第二表面210成为一图案化表面。电子纸显示器500a更包括一光源232和一扩散片230。在本发明一实施例中,光源232设置于导光片206的一侧,其用以提供入射至导光片206的光线234。在本发明另一实施例中,光源232可设置于导光片206的下方,以反射方式将其发射的光线(图未显示)导入导光片206。在本发明一实施例中,扩散片230设置于导光片206的一侧,且横向设置于光源232和导光片206之间,扩散片230用以扩散光源232提供的光线234,以使光线234均匀入射至导光片206。在本发明另一实施例中,亦可利用加工方式,将扩散片230制作在导光片206的侧面。如图1所示的导光片206、光源232和扩散片230可共同称为一前导光模块。另外,由于导光片206的第一表面208或是第二表面210为一图案化表面,所以,入射至导光片206的光线234可借由上述图案化表面(第一表面208)反射或散射至电子纸面板200。
如图1所示,一导电图案结构层204a,设置于导光片206上。在本发明一实施例中,导电图案结构层204a可为电阻式或电容式触控面板的感测电极图案结构。导电图案结构层204a可由铟锡氧化物(ITO)、铟锌氧化物(IZO)、氧化锌镓(Ga Doped Zinc Oxide,GZO)、掺杂铝的氧化锌(Al-doped ZnO,AZO)、锌、导电高分子(例如PEDOT)、纳米碳管薄膜、银纳米线、金属网线或石墨或类似材质形成。在本实施例中,可利用镀膜或贴附方式,将导电图案结构层204a直接设置于导光片206的第二表面210上,且介于导光片206和电子纸面板200之间。在本实施例中,导电图案结构层204a可为单一层,其包括用于电容感应的水平(列)感测电极图案和垂直(行)感测电极图案,以交错方式设置且彼此电性绝缘。另外,在本发明一实施例中,光学胶层202(例如日立公司的光学透明胶(optical clear adhesive,OCA)可选择性地设置于导电图案结构层204a与电子纸面板200之间。
在图1所示的实施例中,电子纸显示器500a的导光片206同时作为触控面板的保护玻璃/软板(cover lens)。因此,导光片206和设置于其上的导电图案结构层204a可共同构成例如为单片玻璃电容式触控面板(OGS capacitivetouch)的一触控面板。相较于使用单片玻璃电容式触控面板制成的现有电子纸显示器,本发明实施例的电子纸显示器500a可不需现有电子纸显示器的盖板、将盖板贴合至导光片的光学胶层以及抗眩层(anti-glare film,AG film)。因此,电子纸显示器500a的总厚度H1可较使用单片玻璃电容式触控面板制成的现有电子纸显示器的总厚度减少上述元件的厚度,且电子纸显示器500a可节省上述元件的相关工艺,且可兼顾透光度、对比度、重量与成本等要求。
为避免将导电图案结构层镀在导光片的工艺期间对导光片的造成损伤,可先将导电图案结构层镀于一薄膜上,再贴合至导光片的第二表面210上。图2为本发明另一实施例的电子纸显示器500b的剖面示意图。电子纸显示器500b与电子纸显示器500a的不同处为电子纸显示器500b的的导光片206和导电图案结构层204b可共同构成例如一双面氧化铟锡(double side ITO,D-ITO)投射式电容触控面板(也可称为G/F2双面ITO薄膜结构)的触控面板,其中导光片206同时作为触控面板的保护玻璃/软板(cover lens)。在本实施例中,导电图案结构层204b包括一基板218、一上导电图案层220和一下导电图案层222。在本发明一实施例中,基板218的材质可为玻璃、聚碳酸脂(PC)、聚氯乙烯(PVC)或聚甲基丙烯酸甲酯(PMMA)。在其他实施例中,基板218也可为导电聚脂膜(ITO-PET Film)或导电胶板(ITO-Plastic)。如图2所示,基板218具有一上表面238和一下表面240,而上导电图案层220和下导电图案层222可利用镀膜或印刷方式分别设置于基板218的上表面238和下表面240上。在本发明一实施例中,上导电图案层220和下导电图案层222可分别为水平(列)感测电极图案层和垂直(行)感测电极图案层。在本实施例中,可利用一光学胶216,将导电图案结构层204b贴附至导光片206的第二表面210上。在本实施例中,可使用铟锡氧化物(ITO)形成上导电图案层220和下导电图案层222。然而,也可使用铟锌氧化物(IZO)、氧化锌镓(Ga Doped Zinc Oxide,GZO)、掺杂铝的氧化锌(Al-doped ZnO,AZO)、锌、导电高分子(例如PEDOT)、纳米碳管薄膜、银纳米线或石墨或类似材质形成上导电图案层220和下导电图案层222。相较于使用双面氧化铟锡投射式电容触控面板制成的现有电子纸显示器,本发明实施例的电子纸显示器500b可不需现有电子纸显示器的盖板、将盖板贴合至导光片的光学胶层以及抗眩层(anti-glare film,AG film)。因此,电子纸显示器500b的总厚度H2可较使用双面氧化铟锡投射式电容触控面板制成的现有电子纸显示器的总厚度减少上述元件的厚度,且电子纸显示器500b可节省上述元件的相关工艺,且可兼顾透光度、对比度、重量与成本等要求。
图3为本发明又另一实施例的电子纸显示器500c的剖面示意图。电子纸显示器500b与电子纸显示器500a的不同处为电子纸显示器500c的导光片206和导电图案结构层204c可共同构成例如一单面氧化铟锡(single side ITO,S-ITO)投射式电容触控面板(也可称为(Glass/ITO X Film/ITO Y Film,G/F/F)双ITO层结构)的触控面板,其中导光片206同时作为触控面板的保护玻璃/软板(cover lens)。在本实施例中,导电图案结构层204c包括第一基板224、第二基板226、一上导电图案层220和一下导电图案层222。在本发明一实施例中,第一基板224和第二基板226的材质可为玻璃、聚脂(PET)、聚碳酸脂(PC)、聚氯乙烯(PVC)或聚甲基丙烯酸甲酯(PMMA)。图3所示,上导电图案层220和下导电图案层222可利用镀膜或印刷方式分别设置于第一基板224的上表面242和第二基板226的上表面244上。在其他实施例中,也可对表面具有导电材料涂层的导电聚脂膜(ITO-PET Film)或导电胶板(ITO-Plastic)进行图案化工艺,以形成承载上导电图案层220的第一基板224或承载下导电图案层222的第二基板226。而承载上导电图案层220的第一基板224和承载下导电图案层222的第二基板226可利用贴合方式连接。在本发明一实施例中,上导电图案层220和下导电图案层222可分别为水平(列)感测电极图案层和垂直(行)感测电极图案层。在本实施例中,可利用一光学胶216,将导电图案结构层204c贴附至导光片206的第二表面210上。在本实施例中,上导电图案层220和下导电图案层222的材质为铟锡氧化物(ITO)。然而,上导电图案层220和下导电图案层222的材质也可为铟锌氧化物(IZO)、氧化锌镓(Ga Doped Zinc Oxide,GZO)、掺杂铝的氧化锌(Al-doped ZnO,AZO)、锌、导电高分子(例如PEDOT)、纳米碳管薄膜、银纳米线或石墨或类似材质。相较于使用单面氧化铟锡投射式电容触控面板制成的现有电子纸显示器,本发明实施例的电子纸显示器500c可不需现有电子纸显示器的盖板、将盖板贴合至导光片的光学胶层以及抗眩层(anti-glare film,AG film)。因此,电子纸显示器500c的总厚度H3可较使用单面氧化铟锡投射式电容触控面板制成的现有电子纸显示器的总厚度减少上述元件的厚度,且电子纸显示器500c可节省上述元件的相关工艺,且可兼顾透光度、对比度、重量与成本等要求。
图4为本发明其他实施例的电子纸显示器500d的剖面示意图。如图4所示,在本发明其他实施例中,电子纸显示器500d的导电图案结构层204d也可设置于导光片206的图案化的第一表面208上。上述电子纸显示器500d的的导光片206和导电图案结构层204d可共同构成例如一表面式电容触控面板(Surface Capacitive Touch,SCT)的触控面板。在本实施例中,可利用镀膜或贴附方式,将导电图案结构层204d直接设置于导光片206的第一表面208上。因此,导光片206会位于导电图案结构层204d和电子纸面板200的间,且导电图案结构层204d借由粘着层212固定于前框214中。在本实施例中,导电图案结构层204d为单一层,通过四个角落电极感应电位差。另外,导电图案结构层204d的材质可与导电图案结构层204a~204c相同。相较于使用表面式电容触控面板制成的现有电子纸显示器,本发明实施例的电子纸显示器500d可不需现有电子纸显示器的盖板、将盖板贴合至导光片的光学胶层以及抗眩层(anti-glare film,AG film)。因此,电子纸显示器500d的总厚度H4可较使用表面式电容触控面板制成的现有电子纸显示器的总厚度减少上述元件的厚度,且电子纸显示器500d可节省上述元件的相关工艺,且可兼顾透光度、对比度、重量与成本等要求。
虽然本发明已以实施例揭露如上,然其并非用以限定本揭露,任何本领域普通技术人员在不脱离本发明的精神和范围内,当可作些许的更动与润饰,因此本发明的保护范围当视所附的权利要求范围所界定为准。
Claims (10)
1.一种电子纸显示器,其特征在于,包括:
一电子纸面板;
一导光片,设置于该电子纸面板上,其具有远离于该电子纸面板的一第一表面和相对于该第一表面的一第二表面;
一导电图案结构层,设置于该导光片上;以及
一光源,设置于该导光片的一侧,其中该导光片的该第一表面为一图案化表面,该图案化表面用以将该光源提供的一光线借由该图案化表面反射或散射至该电子纸面板。
2.如权利要求1所述的电子纸显示器,其中该导电图案结构层设置于该导光片的该第一表面上。
3.如权利要求1所述的电子纸显示器,其中该导电图案结构层设置于该导光片的该第二表面上。
4.如权利要求3所述的电子纸显示器,其中该导电图案结构层为单一层,其包括水平感测电极图案和垂直感测电极图案。
5.如权利要求3所述的电子纸显示器,其中该导电图案结构层包括:
一第一基板,其具有一上表面和一下表面;以及
一上导电图案层和一下导电图案层,分别设置于该第一基板的该上表面和该下表面上。
6.如权利要求5所述的电子纸显示器,还包括:
一第二基板,设置于该下导电图案层上,使该下导电图案层位于第一基板和该第二基板之间。
7.如权利要求1所述的电子纸显示器,其中该图案化表面借由包括印刷反射油墨、化学蚀刻或激光蚀刻的一方法形成。
8.如权利要求1所述的电子纸显示器,其中该导光片包括玻璃或塑胶。
9.如权利要求1所述的电子纸显示器,其中该导电图案结构层由铟锡氧化物、铟锌氧化物、氧化锌镓、掺杂铝的氧化锌、锌、导电高分子、纳米碳管薄膜、银纳米线或石墨形成。
10.如权利要求1所述的电子纸显示器,还包括:
一扩散片,设置于该导光片和该光源之间;以及
一光学胶层,设置于该导电图案结构层与该电子纸面板之间。
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