Method for preparing printed flexible display module based on double-layer PDLC (Polymer Dispersed Liquid Crystal)

Abstract

The invention provides a method for preparing a printed flexible display module based on double-layer PDLC (Polymer Dispersed Liquid Crystal). The method comprises the following steps: flatly fixing a flexible substrate with a transparent conducting layer on a rigid chip through an adhesion layer, and enabling the transparent conducting layer to form an electrode array A through a photolithographic process; coating and photo-curing a first layer of PDLC membrane, sputtering a transparent conducting layer B, and then coating a second layer of PDLC membrane; covering a transparent flexible chip with a transparent electrode array C on the second layer of PDLC membrane, carrying out photo-curing, and then separating the rigid chip from a device; and adopting a printing process to airbrush a CMYK (cyan, magenta, yellow and black) ink layer on the back of the flexible substrate. The method adopts the double-layer PDLC structure and can effectively reduce the off-state transmittance and increase the display contrast under the condition that the driving voltage is increased. Meanwhile, the rigid chip is used as a support layer in the processing of a flexible display module, so that the processing precision can be ensured, and the method is compatible with a microelectronic process. The whole process is simple, the cost is low, and the method is easy for mass production.

Description

technical field [0001] The invention relates to a method for preparing a flexible display module, in particular to a method for preparing a display module in a printed flexible display based on a double-layer PDLC and three-layer driving electrode structure. Background technique [0002] The current display technology can be divided into two categories: one is paper display, and its main features are: display content by reflecting ambient light, easy to display in color, large viewing angle (close to 180°), and soft media. The other type is CRT, LCD, LED and other electronic displays. Its main features are: information can be refreshed quickly, relying on the internal light of the display itself to display the content, it needs to consume more power when working, it is easy to make people tired when reading, and the medium is not soft . [0003] In the past ten years, people are focusing on the development of paper-like reflective flexible displays (commonly known as electr...

AI Technical Summary

Problems solved by technology

However, low contrast is a common problem in current reflective flexible displays, and it also plagues the development of PDLC-based printed flexible displays.

In order to improve this situation, the use of double-layer PDLC and three-layer driving electrode structure can greatly reduce the off-state light transmittance of PDLC-based printed flexible displays, thereby significantly improving its contrast ratio, but there are very few research reports on the preparation process.

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