Electronic Paper Display Device

Abstract

An electronic paper display device, which includes an electronic paper display screen and a driving electrode device, the electronic paper display screen includes a substrate, a common electrode layer, an electrophoretic layer, and a packaging layer, and the driving electrode device includes a control circuit and is in a matrix Several matrix electrodes are arranged, the control circuit is provided with a common electrode, and the driving electrode device also includes a common electrode connecting part connecting the common electrode and the common electrode layer, and the control circuit is used to output signals to all on the matrix electrodes, so that a driving electric field is applied to the electrophoretic layer to form an image. Since the electronic paper display screen does not have a TFT film layer, the cost is greatly reduced. At the same time, by using an electrode matrix instead of a TFT film layer as a driver, the design range of the driving voltage is widened, and the cost of driving the TFT circuit is reduced, saving The cost of electronic components is reduced, and when the driving electrode device has a bad problem, it can be replaced 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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