An electrochromic device and its manufacturing method and display device

Abstract

The present invention provides an electrochromic device, a manufacturing method thereof, and a display device for preventing crosstalk between pixels and improving the yield and performance of the electrochromic device; wherein the electrochromic device includes: The first base substrate, the second base substrate, the first transparent electrode layer, the second transparent electrode layer, the electrochromic layer and the electrolyte layer; the electrochromic device also includes an insulating layer, and the insulating layer is located on the second The side above the base substrate facing the first base substrate covers other areas on the second base substrate except the second transparent electrode layer.

Description

technical field [0001] The invention relates to the field of display technology, in particular to an electrochromic device, a manufacturing method thereof, and a display device. Background technique [0002] Electrochromism is a new type of display technology, which is mainly used in glass showcases, billboards, and transparent displays. The electrochromism refers to the stable and reversible color change of the optical properties of materials under the action of an external electric field. phenomenon, which produces a reversible change between the color-causing state of low transmittance or the achromatic state of high transmittance. A special phenomenon of physical property changes caused by electrochemical changes, which is manifested as color and color in appearance. Shown as transparent reversible changes. [0003] Generally, materials with electrochromic properties are called electrochromic materials, and devices made of electrochromic materials are called electrochro...

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Problems solved by technology

[0004] However, since the initial production state of the cathochromic layer material is an aqueous solution, the initial production state of the anode layer material is a viscous colloidal solution, which is a fluid state without a fixed shape. Due to the penetration of the liquid , making crosstalk easily occur between adjacent pixel units; for example figure 2 As shown, the current solution to this problem is mainly to establish a partition wall 201 between each pixel, through which the partition wall 201 suppresses the arbitrary flow of the material of the cathodic color-changing layer 101 when forming the electrochromic layer and its production material when making the anode layer 102

However, the partition wall 201 is generally a frame sealant or a photoresist partition wall, and both the frame sealant and the photoresist contain components such as epoxy resin, catalyst and solution, which are easy to change the color of the cathodic color-changing layer material and the anode layer material. Pollution is generated, and the quality of the electrochromic layer and the anode layer is reduced, thereby reducing the yield and performance of the electrochromic device; at the same time, when the cathochromic layer or / and the anode layer are in liquid state, a high separation wall needs to be set up In order to effectively prevent the occurrence of crosstalk, but due to the limitation of the process, it is difficult to make a higher partition wall; moreover, the higher partition wall is easy to make the uniformity of the screen worse, and it is easy to crack, and the broken partition wall will also Contamination of the cathochromic layer material and / or the anode layer material reduces the quality of the cathochromic layer and the anode layer, thereby reducing the yield and performance of the electrochromic device

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