WO2014127565A1 - 电致变色显示器件及其制造方法 - Google Patents

电致变色显示器件及其制造方法 Download PDF

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Publication number
WO2014127565A1
WO2014127565A1 PCT/CN2013/073906 CN2013073906W WO2014127565A1 WO 2014127565 A1 WO2014127565 A1 WO 2014127565A1 CN 2013073906 W CN2013073906 W CN 2013073906W WO 2014127565 A1 WO2014127565 A1 WO 2014127565A1
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WIPO (PCT)
Prior art keywords
substrate
electrochromic
display device
grooves
electrochromic display
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PCT/CN2013/073906
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English (en)
French (fr)
Inventor
陈娟
周晓东
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京东方科技集团股份有限公司
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Application filed by 京东方科技集团股份有限公司 filed Critical 京东方科技集团股份有限公司
Priority to US14/360,684 priority Critical patent/US20150286107A1/en
Publication of WO2014127565A1 publication Critical patent/WO2014127565A1/zh

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    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL 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
    • G02F1/00Devices 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
    • G02F1/01Devices 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 
    • G02F1/15Devices 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 an electrochromic effect
    • G02F1/153Constructional details
    • G02F1/1533Constructional details structural features not otherwise provided for
    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL 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
    • G02F1/00Devices 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
    • G02F1/01Devices 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 
    • G02F1/15Devices 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 an electrochromic effect
    • G02F1/1503Devices 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 an electrochromic effect caused by oxidation-reduction reactions in organic liquid solutions, e.g. viologen solutions
    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL 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
    • G02F1/00Devices 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
    • G02F1/01Devices 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 
    • G02F1/15Devices 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 an electrochromic effect
    • G02F1/153Constructional details
    • G02F1/155Electrodes
    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL 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
    • G02F1/00Devices 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
    • G02F1/01Devices 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 
    • G02F1/15Devices 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 an electrochromic effect
    • G02F1/153Constructional details
    • G02F1/161Gaskets; Spacers; Sealing of cells; Filling or closing of cells
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00Metal working
    • Y10T29/49Method of mechanical manufacture
    • Y10T29/49002Electrical device making
    • Y10T29/49117Conductor or circuit manufacturing
    • Y10T29/49124On flat or curved insulated base, e.g., printed circuit, etc.
    • Y10T29/49155Manufacturing circuit on or in base

Definitions

  • Electrochromic display device and method of manufacturing the same
  • Embodiments of the present invention relate to the field of display technologies, and in particular, to an electrochromic display device and a method of fabricating the same. Background technique
  • Electrochromism refers to the phenomenon that the optical properties (reflectance, transmittance, absorptivity, etc.) of a material undergo a stable and reversible color change under the action of an applied electric field, and the appearance is a reversible change in color and transparency.
  • a fluid having electrochromic properties is called an electrochromic fluid, and a device using electrochromic fluid is called an electrochromic device.
  • electrochromic display devices Compared with other displays, electrochromic display devices have the advantages of blind angle, high contrast, low manufacturing cost, wide operating temperature range, low driving voltage and rich color. They are widely used in instrument display, outdoor advertising, static display and other fields.
  • FIG. 1 is a schematic cross-sectional view of a prior art electrochromic display device including a first substrate 10, a second substrate 20, and an electrochromic fluid 30 distributed between the first substrate and the second substrate.
  • the first substrate includes a transparent substrate 101 and a first electrode layer 102;
  • the second substrate includes a transparent substrate 201 and a second electrode layer 202.
  • the electrochromic fluid is located between the first electrode layer 102 and the second electrode layer 202 and is evenly distributed in each pixel region of the electrochromic device, since there is no space between the electrochromic fluids in the pixel region and the electrochromic fluid has Liquidity, crosstalk between adjacent pixels is prone to occur, resulting in insufficient display image and affecting the display performance of the electrochromic display device. Summary of the invention
  • an electrochromic display device includes a first substrate, a second substrate opposite the first substrate, and an electrochromic fluid distributed between the first substrate and the second substrate, Wherein the first substrate is provided with a plurality of grooves, and the electrochromic fluid is partitioned into the plurality of grooves.
  • a method of fabricating an electrochromic display device comprising the steps of: Providing a first substrate and a second substrate;
  • the first substrate and the second substrate are paired with the case.
  • FIG. 1 is a schematic cross-sectional view of a prior art electrochromic display device
  • FIG. 2 is a schematic cross-sectional structural view of an electrochromic display device according to an embodiment of the present invention.
  • FIG. 3 is a schematic cross-sectional view of a first substrate of an electrochromic display device according to an embodiment of the present invention
  • FIG. 4 is a schematic view showing a structure of a recess of an electrochromic display device according to an embodiment of the present invention
  • FIG. 5 is a schematic view showing the structure of a second substrate of an electrochromic display device according to an embodiment of the present invention.
  • FIG. 6 is a schematic view showing the display effect of the electrochromic display device of the embodiment of the present invention.
  • an electrochromic display device includes: a first substrate 21, a second substrate 22 opposed to the first substrate 21, and a first substrate 21 and The electrochromic fluid 23 between the second substrates 22, wherein the first substrate 21 is provided with a plurality of grooves 21, and the electrochromic fluid 23 is partitioned into the plurality of grooves 21.
  • the use of a grooved structure for containing a liquid electrochromic fluid can solve the problem of mutual interference of electrochromic fluids between adjacent pixels.
  • the electrochromic fluid 23 includes, for example, an electrochromic material and an electrolyte, and the electrochromic material includes, for example, a viologen-like material.
  • each of the first substrate 21 and the second substrate 22 includes a substrate and a pixel electrode layer.
  • the second substrate 22 includes a second substrate 221 and a thin film transistor (not shown) and a second pixel electrode layer 222 disposed on the second substrate 221 .
  • the first substrate includes a first substrate 211, and the first substrate 211 is provided with a plurality of grooves 21, .
  • the recess 21 has a depth of from 20 micrometers to 80 micrometers.
  • a first pixel electrode layer 212 is disposed on the bottom surface of each of the grooves 21.
  • a chemical thinning method or a mechanical thinning method may be used to form a groove 21 on the first substrate 21, and the groove 21 has a thickness of 2 micrometers to 10 micrometers, which can be used by a person skilled in the art as needed.
  • the wall thickness between adjacent grooves is 2 to 10 meters.
  • the bottom of the village (211, 221) may be a glass substrate, a polymer substrate or a composite substrate, but is preferably a transparent glass substrate.
  • a metal lead 211 may be disposed on the sidewall, and a metal lead 211 is connected to the recess 21 and the first pixel electrode 212 at the bottom for One pixel electrode 212 is energized.
  • the array substrate when the second substrate 22 is an array substrate, the array substrate includes: a second substrate, a plurality of data lines 223 formed on the second substrate, a plurality of gate lines 224, and data
  • the line 223 and the gate line 224 define a plurality of pixel units, wherein each of the pixel units includes a thin film transistor switch 225 and a second pixel electrode layer 222 formed on the second substrate.
  • the second substrate 22 can be completed by a conventional array substrate fabrication process.
  • Embodiments of the present invention also provide a method of fabricating an electrochromic display device, comprising the steps of:
  • the first substrate 21 and the second substrate 22 are paired with a case (as shown in Fig. 2).
  • a plurality of grooves 21 are formed on the first substrate 21 by a chemical thinning method or a mechanical thinning method.
  • nitrogen gas may be introduced into the electrochromic fluid 23 to remove oxygen.
  • the pair of the first substrate 21 and the second substrate 22 may specifically include: applying a sealant in the non-recessed area of the first substrate, and bonding the first substrate and the second by using a sealant The substrate is bonded.
  • the electrochromic display device of the embodiment of the present invention realizes active display through the data line 223 and the gate line 224.
  • a voltage signal is input to the different data lines 223 and the gate line 224, different signals can be obtained.
  • the text or digital display card (the oblique line area is the voltage-applied display area, and the non-hatched area is the un-voltage-applied area). Since the electrochromic fluid is separated by the groove 21, there is no problem of adjacent pixel crosstalk.
  • the grooves 21 are in the form of an equally spaced array.
  • the structure is provided with a groove on the substrate, the electrochromic fluid is placed in the groove, and the electrochromic fluid is isolated in the groove of each pixel region, which can be avoided.
  • Crosstalk between adjacent pixels improves the performance of the electrochromic display device.

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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochromic Elements, Electrophoresis, Or Variable Reflection Or Absorption Elements (AREA)

Abstract

一种电致变色显示器件及其制作方法,所述电致变色显示器件包括第一基板(21)、与第一基板(21)对置的第二基板(22)以及分布于第一基板(21)和第二基板(22)之间的电致变色流体(23),其中所述第一基板(21)上设置有多个凹槽(21'),所述电致变色流体(23)分隔置于所述凹槽(21')内。

Description

电致变色显示器件及其制造方法 技术领域
本发明的实施例涉及显示技术领域, 特别涉及一种电致变色显示器件及 其制造方法。 背景技术
电致变色是指材料的光学属性(反射率、 透过率、 吸收率等)在外加电 场的作用下发生稳定、 可逆的颜色变化的现象, 在外观上表现为颜色和透明 度的可逆变化。 具有电致变色性能的流体称为电致变色流体, 用电致变色流 体^ ^成的器件称为电致变色器件。 电致变色显示器件与其它显示器相比具有 无视盲角、 对比度高、 制造成本低、 工作温度范围宽、 驱动电压低、 色彩丰 富等优点, 在仪表显示、 户外广告、 静态显示等领域应用广泛。
图 1是现有技术电致变色显示器件截面示意图, 电致变色显示器件包括 第一基板 10、 第二基板 20及其分布于第一基板和第二基板之间的电致变色 流体 30。 第一基板包括透明村底 101和第一电极层 102; 第二基板包括透明 村底 201和第二电极层 202。 电致变色流体位于第一电极层 102和第二电极 层 202之间, 均匀分布于所述电致变色器件各像素区域, 由于像素区域的电 致变色流体之间没有间隔且电致变色流体具有流动性, 相邻像素之间容易发 生串扰, 导致显示图像不够清晰, 影响电致变色显示器件的显示性能。 发明内容
因此, 本发明的实施例提供一种电致变色显示器件及其制造方法。 根据本发明的第一方面, 提供一种电致变色显示器件, 包括第一基板、 与第一基板对置的第二基板以及分布于第一基板和第二基板之间的电致变色 流体, 其中所述第一基板上设置有多个凹槽, 所述电致变色流体分隔置于所 述多个 槽内。
根据本发明的第二方面, 还提供一种电致变色显示器件的制造方法, 包 括如下步骤: 提供第一基板和第二基板;
在第一基板上形成多个 槽;
在每个凹槽底面形成像素电极层;
向每个凹槽内注入电致变色流体; 以及
将第一基板与第二基板对盒。 附图说明
为了更清楚地说明本发明实施例的技术方案, 下面将对实施例的附图作 筒单地介绍,显而易见地,下面描述中的附图仅仅涉及本发明的一些实施例, 而非对本发明的限制。
图 1是现有技术电致变色显示器件截面示意图;
图 2是本发明实施例的电致变色显示器件截面结构示意图;
图 3是本发明实施例的电致变色显示器件第一基板截面结构示意图; 图 4是本发明实施例的电致变色显示器件凹槽结构示意图;
图 5是本发明实施例的电致变色显示器件第二基板结构示意图; 图 6是本发明实施例的电致变色显示器件的显示效果示意图。 具体实施方式
为使本发明实施例的目的、 技术方案和优点更加清楚, 下面将结合本发 明实施例的附图,对本发明实施例的技术方案进行清楚、 完整地描述。显然, 所描述的实施例是本发明的一部分实施例, 而不是全部的实施例。 基于所描 述的本发明的实施例, 本领域普通技术人员在无需创造性劳动的前提下所获 得的所有其他实施例, 都属于本发明保护的范围。
除非另作定义, 此处使用的技术术语或者科学术语应当为本发明所属领 域内具有一般技能的人士所理解的通常意义。 本发明专利申请说明书以及权 利要求书中使用的 "第一" 、 "第二" 以及类似的词语并不表示任何顺序、 数量或者重要性,而只是用来区分不同的组成部分。同样, "一个 "或者 "一" 等类似词语也不表示数量限制, 而是表示存在至少一个。 "包括" 或者 "包 含" 等类似的词语意指出现在 "包括" 或者 "包含" 前面的元件或者物件涵 盖出现在 "包括" 或者 "包含" 后面列举的元件或者物件及其等同, 并不排 除其他元件或者物件。 "连接" 或者 "相连" 等类似的词语并非限定于物理 的或者机械的连接, 而是可以包括电性的连接, 不管是直接的还是间接的。
"上" 、 "下" 、 "左" 、 "右" 等仅用于表示相对位置关系, 当被描述对 象的绝对位置改变后, 则该相对位置关系也可能相应地改变。
如图 2和图 3所示, 根据本发明实施例的一种电致变色显示器件包括: 第一基板 21 , 与第一基板 21对置的第二基板 22, 以及分布于第一基板 21 和第二基板 22之间的电致变色流体 23 , 其中, 第一基板 21上设置有多个凹 槽 21, , 电致变色流体 23分隔置于多个凹槽 21, 内。 采用带凹槽的结构来 盛装液态电致变色流体,可以解决相邻像素间电致变色流体互相干扰的问题。 电致变色流体 23例如包括: 电致变色材料和电解质, 电致变色材料例如包括 紫罗精类材料。
具体地, 第一基板 21和第二基板 22的每一个包括村底和像素电极层。 第二基板 22包括第二村底 221和设置在该第二村底 221上的薄膜晶体管(未 示出)和第二像素电极层 222。 第一基板包括第一村底 211 , 第一村底 211 上设置有多个凹槽 21, 。 优选地, 凹槽 21, 的深度为 20微米至 80微米。 每 个凹槽 21, 的底面上设置有第一像素电极层 212。 在本实施例中, 例如可以 采用化学减薄法或机械减薄法在第一基板 21上开设凹槽 21, , 凹槽 21, 底 板厚度为 2微米至 10微米,本领域技术人员可根据需要对凹槽的尺寸设置进 行各种变化。 相邻凹槽之间的壁厚为 2 米至 10 米。 开设凹槽 21, 时, 凹槽 21, 底板的厚度和相邻凹槽之间侧壁的厚度可根据实际需要调节。 在本 实施例中, 村底(211 , 221 ) 可以为玻璃村底、 聚合物村底或者复合材料村 底, 然而优选为透明的玻璃村底。
如图 4所示,在凹槽, 内,例如凹槽 21,侧壁上可设置有金属引线 211, , 金属引线 211, 与凹槽 21, 底部的第一像素电极 212连接, 用于给第一像素 电极 212通电。
如图 5所示,当第二基板 22为阵列基板时,该阵列基板包括:第二村底, 形成在该第二村底上的多个数据线 223、 多个栅线 224、 以及由数据线 223 和栅线 224限定的多个像素单元, 其中每个像素单元包括形成在第二村底上 的薄膜晶体管开关 225以及第二像素电极层 222。第二基板 22可以通过常规 的阵列基板制作工艺完成。 本发明的实施例还提供一种电致变色显示器件的制造方法, 包括如下步 骤:
提供第一基板 21和第二基板 22;
在第一基板 21上形成多个凹槽 21, ;
在每个凹槽 21, 底面形成第一像素电极层 212;
向每个凹槽 21, 内注入电致变色流体 23; 以及
将第一基板 21与第二基板 22对盒(如图 2所示) 。
在一个示例中,采用化学减薄法或机械减薄法在第一基板 21上形成多个 凹槽 21, 。 在一个示例中, 向每个凹槽 21, 内注入电致变色流体 23步骤后, 可向电致变色流体 23内通入氮气以去除氧气。
在一个示例中, 将第一基板 21与第二基板 22对盒可具体包括: 在第一 基板非凹槽区域涂覆封框胶, 并利用封框胶粘合作用使第一基板与第二基板 结合。
参考图 6, 本发明实施例的电致变色显示器件, 通过数据线 223与栅线 224来实现有源显示, 当给不同的数据线 223与栅线 224输入电压信号时, 则可以得到不同的文字或数字显示牌(斜线区域为加电压显示区域, 无斜线 区域为未加电压区域), 由于电致变色流体被凹槽 21, 隔开, 因此不会产生 相邻像素串扰的问题。 在该实施例中, 凹槽 21, 采用等间距的阵列形式。
在上述本发明实施例提供的电致变色显示器件, 采用基板上设置凹槽的 结构, 电致变色流体置于凹槽内, 电致变色流体被隔离在各像素区域的凹槽 内, 可以避免相邻像素间的串扰, 提高电致变色显示器件的性能。

Claims

权利要求书
1、一种电致变色显示器件, 包括第一基板、 与第一基板对置的第二基板 以及分布于第一基板和第二基板之间的电致变色流体, 其中,
所述第一基板上设置有多个凹槽, 所述电致变色流体分隔置于所述多个 凹槽内。
2、根据权利要求 1所述的电致变色显示器件, 其中, 所述第一基板包括 第一村底, 所述第一村底上设置有多个凹槽。
3、根据权利要求 1或 2所述的电致变色显示器件, 其中,每个凹槽的深 度为 20微米至 80微米。
4、根据权利要求 1至 3任一项所述的电致变色显示器件, 其中, 所述多 个凹槽中的相邻凹槽之间的壁厚为 2微米至 1(H敫米。
5、根据权利要求 1至 4任一项所述的电致变色显示器件, 其中, 所述第 一基板还包括第一像素电极层,在每个凹槽的底面上设置该第一像素电极层。
6、根据权利要求 5所述的电致变色显示器件, 其中,每个凹槽内设置有 连接所述第一像素电极层的引线, 用以给所述第一像素电极层供电。
7、根据权利要求 5或 6所述的电致变色显示器件, 其中, 所述第二基板 包括第二村底, 和设置在该第二村底上第二像素电极层, 所述第一像素电极 层与第二像素电极层相对地设置。
8、根据权利要求 1至 7任一项所述的电致变色显示器件, 其中, 电致变 色流体包括电致变色材料, 所述电致变色材料包括紫罗精。
9、根据权利要求 1至 8任一项所述的电致变色显示器件, 其中, 所述村 底为玻璃村底、 聚合物村底或者复合材料村底。
10、 一种电致变色显示器件的制造方法, 包括如下步骤:
提供第一基板和第二基板;
在第一基板上形成多个 槽;
在每个凹槽底面形成像素电极层;
向每个凹槽内注入电致变色流体; 以及
将第一基板与第二基板对盒。
11、 根据权利要求 10所述的制造方法, 其中, 采用化学减薄法或机械减薄法在所述第一基板上形成多个凹槽。
12、 根据权利要求 10或 11所述的制造方法, 其中,
所述向每个凹槽内注入电致变色流体步骤后,向电致变色流体通入氮气。
13、 根据权利要求 10至 12中任一项所述的制造方法, 其中, 所述将第 一基板与第二基板对盒包括:
在第一基板非凹槽区域涂覆封框胶; 以及
利用封框胶将第一基板与第二基板相对地粘合在一起。
PCT/CN2013/073906 2013-02-22 2013-04-08 电致变色显示器件及其制造方法 WO2014127565A1 (zh)

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