Method for manufacturing roll-to-roll colored electronic paper

Abstract

The invention discloses a method for manufacturing roll-to-roll colored electronic paper. The method comprises the following steps: 1, manufacturing a drive circuit, a segment code circuit or a thin film transistor circuit on a lower rolling substrate, and laminating electronic ink to form an electronic ink display module; 2, manufacturing a color filter on an upper rolling substrate; 3, transferring the color filter on the upper rolling substrate to the lower rolling substrate, and completing manufacture of flexible colored electronic paper, wherein the transferring process comprises two modes of transferring the color filter on the upper rolling substrate to the lower rolling substrate by adopting a roll-to-roll laser writing process and transferring the color filter on the upper rolling substrate to the lower rolling substrate by adopting roll-to-roll color filter thermal transfer printing process. According to the method for manufacturing the flexible colored electronic paper provided by the invention, the bottleneck of the colored electronic paper by virtue of the traditional color filter solvent and high-temperature process is broken, and with the combination of the roll-to-roll process, the production speed and efficiency are improved.

Description

technical field [0001] The invention relates to the field of color electronic paper manufacturing, in particular to a roll-to-roll color electronic paper manufacturing method. Background technique [0002] Color filter (Color filter) is an optical filter that expresses color, it can precisely select the small range of light waves to be passed, and reflect off other unwanted wave bands. Color filters are usually installed in front of the light source so that the human eye can receive saturated light of a certain color, including infrared filters, green filters, and blue filters. At present, there are mainly two manufacturing methods for color negative photoresist, one is yellow light production, and the other is inkjet printing. [0003] 1. Making color negative photoresist with yellow light [0004] The reason why TFT-LCD panels can produce color changes is mainly due to color filters. To achieve colorization of electronic paper, a more mature way is still to combine color...

AI Technical Summary

Problems solved by technology

However, if you want to make the retaining wall with jet printing technology at the same time to achieve a fully jet-printed color filter, limited by the size of the printing droplets in the current inkjet technology, it is still impossible to obtain a finer than 30 μm fine jet printing pattern on the retaining wall

In the patent US6162510, Canon discloses how to apply the traditional color filter manufacturing method to the colorization of electronic paper. There are several problems: 1) The flexible glass transition temperature (Tg) of the electronic paper plastic substrate is only 78°C, while the traditional color filter manufacturing temperature is about 200°C, the color filter manufacturing temperature is much higher than the flexible glass transition temperature of the electronic paper plastic substrate, which will cause deformation of the electronic paper plastic substrate and lead to product failure; 2) high temperature The advanced color filter process will cause the problem of moisture balance in the electronic paper capsule, making the reliability of the electronic paper poor; 3) The glue of the electronic paper cannot withstand the high temperature color filter process, which will also cause the electronic paper membrane reliability issues

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