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Electrochromic display device and manufacturing method thereof, cathode structure and micro-grid array

A display device, electrochromic technology, applied in the direction of instruments, nonlinear optics, optics, etc., can solve the problems of high process difficulty, product yield drop, pollution of anode materials, etc., and achieve the effect of simplifying the process difficulty

Active Publication Date: 2012-08-29
BOE TECH GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] In the process of manufacturing the above-mentioned electrochromic display device, the inventors found that there are at least the following problems in the prior art: in the bonding step, because the cathode film and the microcup array need to be accurately aligned, if the alignment is not accurate, The liquid anode material will flow out, resulting in a decrease in the yield of the product, making the alignment process more difficult; in the packaging step, since the side of the cathode film is exposed from the side of the box-shaped structure, it will directly contact with the sealing Material contact, thus causing the cathode material to be contaminated by the sealing material, and if there is the above-mentioned misalignment, it will cause the sealing material to contact the exposed anode material, contaminating the anode material

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  • Electrochromic display device and manufacturing method thereof, cathode structure and micro-grid array
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  • Electrochromic display device and manufacturing method thereof, cathode structure and micro-grid array

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preparation example Construction

[0025] An embodiment of the present invention also provides a method for manufacturing an electrochromic display device, comprising: forming a cathode film on a first conductive substrate; forming a barrier strip on at least one side of the cathode film, and the barrier strip is vertical The thickness in the direction of the first conductive substrate is the same as the thickness of the cathode film; a microgrid array is formed on the second conductive substrate, and the height of three of the outer walls around the microgrid array exceeds The height of the micro-grid in the micro-grid array is to form a drawer-shaped guide groove with a gap above the micro-grid array, the height of the excess is the same as the thickness of the cathode film, and the internal dimension of the drawer-shaped guide groove is Matching the peripheral size of the cathode film with the barrier strip; filling the anode material in each of the microgrids of the microgrid array; making the cathode film a...

Embodiment 1

[0031] An embodiment of the present invention provides an electrochromic display device, referring to Figure 2 ~ Figure 4 , to describe the structure of the device in detail.

[0032] The electrochromic display device includes: a microgrid array 32 , a cathode film 22 , a first conductive substrate 21 and a sealing material (not shown in the figure) sequentially formed on a second conductive substrate 31 . Each microgrid 33 in the microgrid array 32 is filled with an anode material (not shown), and the sealing material is used to seal the cathode film 22 and the anode material; at least one side of the cathode film 22 has Barrier strip 23, the thickness d2 of this barrier strip 23 in the direction perpendicular to the first conductive substrate 21 is the same as the thickness d1 of the cathode film; the height of three outer walls in the outer walls 34 around the micro grid array 32 exceeds The height of the microgrid 33 is such that a drawer-shaped guide groove 35 with a ga...

Embodiment 2

[0038] This embodiment provides a method for preparing an electrochromic display device, such as Figure 2-4 As shown, the method includes the following steps.

[0039] Step 1, forming a cathode thin film 22 on the first conductive substrate 21 .

[0040] Step 2, forming barrier strips 23 on the side of the cathode film 22 .

[0041] Specifically, such as figure 2 As shown, at least one side of the cathode film 22 is coated with a radiation curable material and photocured to form a barrier strip 23 on the at least one side of the cathode film 22, and the barrier strip 23 is vertically The thickness d2 in the direction of the first conductive substrate 21 is the same as the thickness d1 of the cathode film 22 .

[0042] It should be noted that the number of blocking bars 23 is not limited to figure 2 The one shown, preferably three, can be formed on the three sides of the cathode film respectively. When the cathode film with barrier strips on the three sides is fastened w...

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Abstract

The invention discloses an electrochromic display device and a manufacturing method thereof, a cathode structure and a micro-grid array, relates to the electrochromic technology and solves the problems that the cathode material and the anode material of a conventional electrochromic display device are easy to contaminate by sealing material and that the alignment process is difficult when the electrochromic display device is manufactured. According to the embodiment of the invention, three of the four outer walls of the micro-grid array are higher than the micro grids in the micro-grid array, forming a drawer-like guide slot with a gap, and the excessive height is equal to the thickness of a cathode film; and the internal size of the drawer-like guide slot matches with the peripheral size of the cathode film which is provided with a retainer bar. Therefore, the anode material can be enabled to be totally sealed through a simple method by making use of the drawer principle, and the difficulty in the alignment process is reduced. In addition, the retainer bar and the three outer walls which are higher than the micro grids enclose the lateral side of the cathode film, so the problem that the cathode material and the anode material are contaminated by the sealing material is solved.

Description

technical field [0001] The invention relates to electrochromic technology, in particular to an electrochromic display device, a preparation method thereof, a cathode structure and a microgrid array. Background technique [0002] An electrochromic display device (Electrochromic Device, ECD for short) is widely used in portable electronic devices, such as personal digital processors, electronic paper books, and the like. It has the advantages of low starting voltage, low energy consumption, the pattern displayed after opening the circuit can be stored for a certain period of time without energy consumption, low cost, easy to manufacture, good contrast, and wide viewing angle. [0003] The structure of the existing electrochromic display device is as follows figure 1 As shown, on the first ITO film 12 of the first substrate 11 with the first ITO (indium tin oxide) film 12, a microgrid array 13 is formed, and each microgrid is filled with an anode material 14, and the anode mat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/153G02F1/155
Inventor 渠路李文波
Owner BOE TECH GRP CO LTD