Electrochromic display panel and electronic paper

Abstract

The invention relates to an electrochromic display panel and electronic paper. The electrochromic display panel comprises a first substrate, an electrochromic pixel array and a second substrate whichare arranged in sequence. The electrochromic pixel array comprises a plurality of electrochromic units that are in array arrangement and are independently controlled. Each electrochromic unit comprises a black structure layer and a color structure layer, the black structure layer comprises a first electrode, a black electrochromic pixel layer and a second electrode which are sequentially arranged,the color structure layer is arranged on one side of the black structure layer, and the color structure layer comprises RGB structure units or RGBW structure units which are transversely arranged; wherein the first electrode is provided with a first opposite side opposite to the second electrode, the second electrode is provided with a second opposite side opposite to the first electrode, and a plurality of micro-nano structures are arranged on the first opposite side and / or the second opposite side. The electrochromic display panel and the electronic paper not only can display black, but also can display other colors, and the electric field distribution between the transparent electrodes is uniform, so that the electrochromic display panel and the electronic paper have a good display effect.

Description

technical field [0001] The invention relates to an electrochromic display panel and electronic paper, belonging to the field of display technology. Background technique [0002] Electrochromism (EC) refers to the phenomenon that the optical properties of materials (reflectivity, transmittance, absorptivity, etc.) undergo stable and reversible color changes under the action of an external electric field, and the appearance is manifested as color and transparency. reversible changes. Materials with electrochromic properties are called electrochromic materials, and devices made of electrochromic materials are called electrochromic devices. Electrochromic materials are one of the hotspots in material science research in recent years. Electrochromic materials are an important part of electrochromic devices, which dominate the electrochromic performance of devices. According to the structural properties of materials, electrochromic materials can be divided into anodic electroch...

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Problems solved by technology

[0003] 1) The electrochromic layer is often formed by injecting a liquid electrochromic material into the gap, which can easily cause the electrode above the gap to collapse due to pressure difference, and its packaging is difficult, and it is prone to liquid leakage, which seriously affects the electrochromic layer. The quality of the chromic display panel;

[0004] 2) It is often impossible to display pure black, or the device that displays pure black has a complex structure and slow response speed;

[0005] 3) The unevenness of the applied electric field is large, which affects the dielectric strength of the dielectric; under the same conditions, the more uneven the electric field, the lower the dielectric strength of the dielectric, and it is easy to make other materials contact with the dielectric layer and cause corrosion reaction

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