Electronic paper display device

Abstract

An electronic paper display device comprises an electronic paper display screen and a drive electrode device, wherein the paper display screen comprises base materials, a common electrode layer, an electrophoresis layer and a sealing layer, the drive electrode device comprises a control circuit and a plurality of matrix electrodes which are arrayed in a shape of a matrix, the control circuit is provided with a common electrode, the drive electrode device further comprises a common electrode connecting component connected with the common electrode and the common electrode layer, and the control circuit is used for outputting signals to the matrix electrodes and enabling a drive electric field to be imposed on the electrophoresis layer to form images. Due to the fact that the electronic paper display screen is not provided with a thin film transistor (TFT) film, cost of the electronic paper display screen is greatly reduced, at the same time, the electrode matrix replaces the TFT film to be a drive, scope of design of drive voltage is expanded, cost of driving a TFT circuit is reduced, cost of electronic elements is reduced, when bad problems of the drive circuit device occur, the drive circuit device can be changed directly.

Description

technical field [0001] The invention relates to an electronic paper display device, in particular to an electronic paper display device adopting a matrix electrode printing method. Background technique [0002] In the E-paper Display (EPD) technology industry, an electrophoretic layer and a TFT (Thin Film Transistor, Thin Film Transistor) driving electrode matrix layer are generally combined to form an electronic paper display by superimposing the upper and lower layers of the E-paper Display (EPD) technology industry. When the frame is changed, the vertical movement of the charged particles in the electrophoretic layer is controlled by the TFT electrodes attached to the bottom layer to produce a gray scale effect. [0003] figure 1 It is a typical structure of existing electronic paper products, starting from the bottom, there are substrate 11, TFT film layer 12, electrophoretic layer 13, common electrode layer 14, packaging film layer 15, and packaging glue 16, and also i...

AI Technical Summary

Problems solved by technology

[0005] However, in electronic paper products, TFT film (such as TFT glass), IC / FPC / PCB are all expensive components

If you look at large-sized electronic paper displays, the cost of TFT glass will be very high. On the contrary, for some small-sized products below 2-3 inches, the cost ratio of electronic components will be very high.

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