WO2022077526A1 - 一种柔性电子纸显示设备及其制造方法 - Google Patents

一种柔性电子纸显示设备及其制造方法 Download PDF

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WO2022077526A1
WO2022077526A1 PCT/CN2020/121725 CN2020121725W WO2022077526A1 WO 2022077526 A1 WO2022077526 A1 WO 2022077526A1 CN 2020121725 W CN2020121725 W CN 2020121725W WO 2022077526 A1 WO2022077526 A1 WO 2022077526A1
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flexible electronic
layer
electronic paper
display device
paper display
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PCT/CN2020/121725
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English (en)
French (fr)
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孔善右
张仕明
黄德云
葛栋
李丽咱
任军韦华
朱崇芝
王国庆
王梓
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江苏仕邦柔性电子研究院有限公司
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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 
    • G02F1/165—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
    • G02F1/166—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
    • 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
    • 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 
    • G02F1/165—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
    • G02F1/1675—Constructional details
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
    • G09F9/37—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being movable elements
    • G09F9/372—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being movable elements the positions of the elements being controlled by the application of an electric field

Definitions

  • the present invention relates to an electronic paper and a manufacturing method thereof, in particular to a flexible electronic paper display device and a manufacturing method thereof.
  • Liquid Optical Clear Adhesive is a kind of transparent liquid with high transparency and high polymer material as the main material.
  • Liquid optical transparent adhesive is usually used in the production process of touch display panels, which is arranged between the cover glass and the touch sensing layer and is used to bond the cover glass and the touch sensing layer. measurement layer.
  • One of the characteristics of the high transparency of the optical clear adhesive is to reduce the degree to which the backlight is absorbed by the optical clear adhesive when it penetrates the optical clear adhesive, and to maintain the clarity of the displayed color image. Therefore, in the process of assembling the touch display panel, the optically transparent adhesive film with high transparency must not be visually defective, otherwise it will directly or indirectly cause abnormal image display. Defects may include dents, bubbles, de-laminations, and the like.
  • the purpose of the present invention is to provide a flexible electronic paper display device and a manufacturing method thereof, so as to solve the shortcomings of the prior art.
  • the present invention adopts the following technical scheme to realize:
  • a flexible electronic paper display device comprising a panel layer, an electrophoretic display medium layer, a dot matrix circuit layer, and an external circuit interface layer, characterized in that a liquid transparent optical adhesive layer is arranged between the panel layer and the electrophoretic display medium layer , the liquid transparent optical adhesive layer is mixed and filled with silicone resin, acrylate monomer and tackifying resin.
  • the tackifying resin includes one or more of terpene phenolic resin, terpene resin, and rosin resin.
  • the molecular structure in the tackifying resin contains carbonyl groups and/or hydroxyl groups.
  • the content of the tackifying resin is 2-10 wt%.
  • the content of the tackifying resin is 3-9 wt %, 4-8 wt %, and 5-7 wt %.
  • a manufacturing method of a flexible electronic paper display device characterized in that the method comprises the following steps:
  • Step 1) Filling with optical grease: set up a coating device and a sheet, open one or more hollow parts on the surface of the sheet, set a surface film on the hollow part, and fill the surface film from the coating device.
  • Optical grease for liquid port set up a coating device and a sheet, open one or more hollow parts on the surface of the sheet, set a surface film on the hollow part, and fill the surface film from the coating device.
  • Optical grease for liquid port set up a coating device and a sheet, open one or more hollow parts on the surface of the sheet, set a surface film on the hollow part, and fill the surface film from the coating device.
  • Step 2) Optical irradiation: use another light curing device to irradiate the optical resin in the semi-cured state, and heat and pressurize it under the conditions of a temperature of 80-90° C. and a pressure of 0.8-0.9 MPa;
  • Step 3) Cutting and detaching: the cured optical grease is cut by a cutting device, and the optical grease is detached after cutting to form a liquid transparent optical adhesive layer of a flexible electronic product.
  • the thickness of the optical grease is 0.5-20 ⁇ m and 4-50 ⁇ m.
  • the duration of irradiation by the ultraviolet device is greater than 30 seconds and less than 45 seconds.
  • the beneficial technical effects of the present invention are: the surface of the product is smoothed, no accidental deformation is caused by handling the flexible electronic product, the low thermal expansion and heat resistance of the flexible electronic product are improved, and the liquid transparent optical adhesive layer of the final product will have Excellent adhesion, seamless bonding with the inner circuit of the printed circuit board, neither too hard nor too soft, and can be bonded or peeled off with the printed circuit board with moderate strength.
  • FIG. 1 is a schematic diagram of a composite layer structure of a flexible electronic paper display device.
  • the flexible electronic paper display device includes a panel layer 1 , an electrophoretic display medium layer 3 , a dot matrix circuit layer 4 , and an external circuit interface layer 5 .
  • the liquid transparent optical adhesive layer 2 is mixed and filled with silicone resin, acrylate monomer and tackifying resin.
  • the tackifying resin includes one of terpene phenolic resin, terpene resin, and rosin resin. One or more, wherein the molecular structure in the tackifying resin contains carbonyl and/or hydroxyl.
  • the content of the tackifying resin is 2-10 wt %, and in other embodiments, the content of the tackifying resin is 3-9 wt %, 4-8 wt % or 5-7 wt %.
  • This embodiment also provides a manufacturing method of a flexible electronic paper display device, the method includes the following steps: Step 1) Filling with optical grease: setting a coating device and a sheet, and opening one or more hollows on the surface of the sheet Step 2) Optical irradiation: use another light curing device to irradiate the optical resin in the semi-cured state, and place it on the surface film.
  • the temperature is 80-90°C and the pressure is 0.8-0.9MPa for heating and pressing; step 3) cutting and detachment: the cured optical grease is cut by a cutting device, and the optical grease is detached after cutting , forming a liquid transparent optical adhesive layer for flexible electronic products.
  • the thickness of the optical grease is 0.5-20 ⁇ m, and in the optical irradiation of step 2), the duration of irradiation by the ultraviolet device is greater than 30 seconds and less than 45 seconds. In other embodiments, the thickness of the optical grease is 4-50 ⁇ m, and the irradiation duration of the ultraviolet device is 35-45 seconds.

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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Molecular Biology (AREA)
  • Engineering & Computer Science (AREA)
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  • Electrochromic Elements, Electrophoresis, Or Variable Reflection Or Absorption Elements (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

一种柔性电子纸显示设备，包括面板层（1）、电泳显示媒质层（3）、点阵电路层（4）、外接电路接口层（5），在面板层（1）和电泳显示媒质层（3）之间设置有液态透明光学胶层（2），液态透明光学胶层（2）混合填充有机硅树脂、丙烯酸酯单体和增粘树脂。柔性电子纸显示设备的制造方法步骤为：填充光学胶脂、进行光学照射和切割拆离，最终形成柔性电子产品的液态透明光学胶层（2）。柔性电子纸表面平滑化，不会因搬运柔性电子产品而造成意外变形，提高了柔性电子产品的低热膨胀性和耐热性，最终产品的液态透明光学胶层（2）会具有优良的粘附性，在与印刷电路板的内层电路实现无缝粘接，既不会太硬也不会太软，能够以适度的强度与印刷电路板实现粘接或剥离。

Description

一种柔性电子纸显示设备及其制造方法 技术领域
本发明涉及一种电子纸及其制造方法，尤其涉及一种柔性电子纸显示设备及其制造方法。
背景技术
液态光学透明胶(Liquid Optical Clear Adhesive)是一种具有高透明度且以高分子材料为主要材质的透明液体。液态光学透明胶通常应用在触控显示面板的生产工艺中，其设置在玻璃盖板(Cover Glass)与触控感测层之间且用来粘结所述玻璃盖板与所述触控感测层。光学透明胶的高透明度的特性之一在于：降低背光在穿透光学透明胶时被光学透明胶吸收的程度，并维持显示色彩图像的清晰。因此，装配触控显示面板过程中，高透明度的光学透明胶薄膜目视不可有缺陷，否则会直接或间接造成图像显示异常。缺陷可包括凹坑(dent)、气泡(bubble)、接口分离(de-lamination)等等。
发明内容
本发明的目的在于提供一种柔性电子纸显示设备及其制造方法，解决现有技术存在的缺憾。
本发明采用如下技术方案实现：
一种柔性电子纸显示设备，包括面板层、电泳显示媒质层、点阵电路层、外接电路接口层，其特征在于，在所述面板层和电泳显示媒质层之间设置有液态透明光学胶层，所述液态透明光学胶层混合填充有机硅树脂、丙烯酸酯单体和增粘树脂。
进一步的，所述增粘树脂包括萜烯酚醛树脂，萜烯树脂，松香树脂中的一种或多种。
进一步的，所述增粘树脂中的分子结构中含有羰基和/或羟基。
进一步的，所述增粘树脂的含量为2～10wt％。
进一步的，所述增粘树脂的含量为3～9wt％、4～8wt％、5～7wt％。
一种柔性电子纸显示设备的制造方法，其特征在于，该方法包括如下步骤：
步骤1)填充光学胶脂：设置涂布装置和片材，在片材的表面开设一个或多个镂空部，在所述镂空部设置表面薄膜，在所述表面薄膜上填充来自涂布装置出液口的光学胶脂；
步骤2)光学照射：利用此外光线固化装置对半固化状态的光学胶脂进行照射，并在温度为80-90℃、压力为0.8-0.9MPa的条件下进行加热和加压；
步骤3)切割拆离：由切割装置对固化后的光学胶脂进行切割，切割后将光学胶脂拆离，形成柔性电子产品的液态透明光学胶层。
进一步的，在步骤1)中，光学胶脂的厚度为0.5～20μm，4～50μm。
进一步的，在步骤2)的光学照射中，紫外装置照射的持续时间为大于30秒且小于45秒。
本发明具备的有益技术效果是：产品表面平滑化，不会因搬运柔性电子产品而造成意外变形，提高了柔性电子产品的低热膨胀性和耐热性，最终产品的液态透明光学胶层会具有优良的粘附性，在与印刷电路板的内层电路实现无缝粘接，既不会太硬也不会太软，能够以适度的强度与印刷电路板实现粘接或剥离。
附图说明
图1是柔性电子纸显示设备的复合层结构示意图。
具体实施方式
通过下面对实施例的描述，将更加有助于公众理解本发明，但不能也不应当将申请人所给出的具体的实施例视为对本发明技术方案的限制，任何对部件或技术特征的定义进行改变和/或对整体结构作形式的而非实质的变换都应视为本发明的技术方案所限定的保护范围。
如图1所示，柔性电子纸显示设备包括面板层1、电泳显示媒质层3、点阵电路层4、外接电路接口层5，在面板层1和电泳显示媒质层3之间设置有液态透明光学胶层2，液态透明光学胶层2混合填充有机硅树脂、丙烯酸酯单体和增粘树脂，在本实施例中，增粘树脂包括萜烯酚醛树脂，萜烯树脂，松香树脂中的一种或多种，其中增粘树脂中的分子结构中含有羰基和/或羟基。在本实施例中，增粘树脂的含量为2～10wt％，在其他实施例中，增粘树脂的含量为3～9wt％、4～8wt％或5～7wt％。
本实施例同时提供了一种柔性电子纸显示设备的制造方法，该方法包括如下步骤：步骤1)填充光学胶脂：设置涂布装置和片材，在片材的表面开设一个或多个镂空部，在镂空部设置表面薄膜，在表面薄膜上填充来自涂布装置出液口的光学胶脂；步骤2)光学照射：利用此外光线固化装置对半固化状态的光学胶脂进行照射，并在温度为80-90℃、压力为0.8-0.9MPa的条件下进行加热和加压；步骤3)切割拆离：由切割装置对固化后的光学胶脂进行切割，切割后将光学胶脂拆离，形成柔性电子产品的液态透明光学胶层。
在本实施例的步骤1)中，光学胶脂的厚度为0.5～20μm，在步骤2)的光学照射中，紫外装置照射的持续时间为大于30秒且小于45秒。在其他实施例中，光学胶脂的厚度为4～50μm，紫外装置的照射持续时间为35-45秒。
当然，本发明还可以有其他多种实施例，在不背离本发明精神及其实质的情况下，熟悉本领域的技术人员可以根据本发明做出各种相应的改变和变形，但这些相应的改变和变形都应属于本发明所附的权利要求的保护范围。

Claims (8)

  1. 一种柔性电子纸显示设备，包括面板层、电泳显示媒质层、点阵电路层、外接电路接口层，其特征在于，在所述面板层和电泳显示媒质层之间设置有液态透明光学胶层，所述液态透明光学胶层混合填充有机硅树脂、丙烯酸酯单体和增粘树脂。
  2. 根据权利要求1所述的柔性电子纸显示设备，其特征在于，所述增粘树脂包括萜烯酚醛树脂，萜烯树脂，松香树脂中的一种或多种。
  3. 根据权利要求1所述的柔性电子纸显示设备，其特征在于，所述增粘树脂中的分子结构中含有羰基和/或羟基。
  4. 根据权利要求1所述的柔性电子纸显示设备，其特征在于，所述增粘树脂的含量为2～10wt％。
  5. 根据权利要求4所述的柔性电子纸显示设备，其特征在于，所述增粘树脂的含量为3～9wt％、4～8wt％、5～7wt％。
  6. 一种柔性电子纸显示设备的制造方法，其特征在于，该方法包括如下步骤：
    步骤1)填充光学胶脂：设置涂布装置和片材，在片材的表面开设一个或多个镂空部，在所述镂空部设置表面薄膜，在所述表面薄膜上填充来自涂布装置出液口的光学胶脂；
    步骤2)光学照射：利用此外光线固化装置对半固化状态的光学胶脂进行照射，并在温度为80-90℃、压力为0.8-0.9MPa的条件下进行加热和加压；
    步骤3)切割拆离：由切割装置对固化后的光学胶脂进行切割，切割后将光学胶脂拆离，形成柔性电子产品的液态透明光学胶层。
  7. 根据权利要求6所述的柔性电子纸显示设备的制造方法，其特征在于，在步骤1)中，光学胶脂的厚度为0.5～20μm，4～50μm。
  8. 根据权利要求6所述的柔性电子纸显示设备的制造方法，其特征在于，在步骤2)的光学照射中，紫外装置照射的持续时间为大于30秒且小于45秒。
PCT/CN2020/121725 2020-10-13 2020-10-18 一种柔性电子纸显示设备及其制造方法 WO2022077526A1 (zh)

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