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Electronic paper device

A technology of electronic paper and column electrodes, which is applied in the fields of electrical digital data processing, instruments, calculations, etc., can solve the problems of high cost, complex manufacturing process of TFT pixel electrodes, and difficulty in applying electronic paper displays, etc.

Inactive Publication Date: 2012-07-11
HONG FU JIN PRECISION IND (SHENZHEN) CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Usually, TFT pixel electrodes have a certain thickness, which makes it difficult to manufacture light and thin electronic paper displays
At the same time, the manufacturing process of TFT pixel electrodes is complicated and the cost is high

Method used

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Examples

Experimental program
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Embodiment Construction

[0019] Please refer to figure 1 , the electronic paper device 10 is a reflective electrophoretic display device, which includes a lower substrate 20 , an electrophoretic display medium layer 30 and an upper substrate 40 . The electrophoretic display medium layer 30 is placed between the lower substrate 20 and the upper substrate 40 . The upper substrate 40 is located on one side of the user's viewing surface.

[0020] The lower substrate 20 includes a base 21 and a plurality of row electrodes 22 disposed on the surface of the base 21 close to the electrophoretic display medium layer 30 . The substrate 21 can be a glass substrate, a plastic substrate, a circuit board or a flexible circuit board. A plurality of mutually parallel row electrodes 22 can be formed by chemical etching or thin film printing process on the substrate 21 .

[0021] The upper substrate 40 includes a substrate 41 and a plurality of column electrodes 42, the column electrodes 42 are located between the s...

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Abstract

The invention discloses an electronic paper device. The electronic paper device comprises a lower baseplate, an electrophoretic display medium layer and an upper baseplate, wherein the electrophoretic display medium layer is arranged between the upper baseplate and the lower baseplate, a plurality of parallel line electrodes are arranged on the surface adjacent to the electrophoretic display medium layer on the lower baseplate, a plurality of parallel column electrodes are arranged on the surface adjacent to the electrophoretic display medium layer on the upper baseplate, the line electrodes and the column electrodes are orthogonal mutually, the electronic paper device is divided into a plurality of pixel units through overlapped regions of the line electrodes and the column electrodes, and the optical state of the electrophoretic display medium layer is driven to change by forming an electric potential difference between the line electrodes and the column electrodes. By etching or printing a plurality of parallel strip-shaped electrodes on the surfaces of the upper baseplate and the lower baseplate for substituting TFT (thin-film transistor) pixel electrodes, the electronic paper device can be used for manufacturing a light and thin type electronic paper display device.

Description

technical field [0001] The present invention relates to a display device, in particular to an electrophoretic electronic paper device. Background technique [0002] Due to the advantages of low power consumption, flexibility, and thin thickness, electronic paper displays are widely used as display screens in electronic products such as mobile phones, e-books, computers, and personal digital assistants. The structure of an electronic paper display usually includes an upper substrate, a lower substrate, and an electrophoretic display medium layer. A common ITO electrode is provided on the lower surface of the upper substrate, and a TFT pixel electrode is provided on the upper surface of the lower substrate. The electrophoretic display medium layer is closely attached to the public ITO electrode and between the TFT pixel electrodes. At present, the electrophoretic display medium layer mainly adopts micro-capsule (micro-capsule) structure and micro-cup (micro-cup) structure. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/167
CPCG06F1/1637G09G3/344G09G2300/06
Inventor 肖卫国陈益莹林久雄
Owner HONG FU JIN PRECISION IND (SHENZHEN) CO LTD
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