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A bistable electrowetting display and its preparation method

An electrowetting display, bistable technology, applied in the direction of instruments, optical components, optics, etc., can solve the problems of difficult production and preparation, complicated manufacturing process, difficult to realize industrialization and application promotion, and achieve simple structure and excellent preparation process. The effect of simple, steady-state characteristics

Active Publication Date: 2018-09-25
SOUTH CHINA NORMAL UNIVERSITY +2
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the manufacturing process of this structure is quite complicated, the production and preparation are very difficult, and it is difficult to realize industrialization and application promotion.

Method used

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  • A bistable electrowetting display and its preparation method
  • A bistable electrowetting display and its preparation method
  • A bistable electrowetting display and its preparation method

Examples

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Effect test

Embodiment 1

[0058] Take the substrate, the substrate of glass material is used in this embodiment, other materials with the same effect can be used as the substrate. A conductive layer is prepared by depositing a layer of silver, gold or ITO on different regions of the substrate surface by means of magnetron sputtering, etc., and the conductive layer includes a plurality of electrode pairs composed of a first electrode and a second electrode, each of which The electrode pairs are arranged corresponding to each pixel grid, the first electrode is arranged at a corner of the pixel grid, and an arc-shaped spacer strip is formed between the first electrode and the second electrode in each electrode pair. The thickness of the conductive layer can be controlled by the time of magnetron sputtering, and the film thickness is usually controlled between 25-100nm. The narrower the width of the arc-shaped spacer strips, the better, usually 2-10 microns. Wherein, the aperture ratio of the pixel is con...

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Abstract

The invention discloses a bistable electrowetting display and a preparation method thereof. The display includes a lower substrate, the lower substrate includes a substrate, a conductive layer, an insulating layer and a pixel wall structure sequentially arranged on the substrate, and the conductive layer includes a plurality of An electrode pair composed of a first electrode and a second electrode, each electrode pair is set corresponding to each pixel grid, the first electrode is set at a corner of the pixel grid, an arc-shaped spacer strip is formed between the first electrode and the second electrode, and the insulating layer It includes a hydrophobic area and a hydrophilic area, and the hydrophilic area is a plurality of arc-shaped strip areas corresponding to each arc-shaped interval strip; the invention has a simple structure and a simple preparation process, and the ink will shrink when DC is applied to the common electrode and the second electrode. To the corner of the pixel grid corresponding to the first electrode; after the voltage is removed, the pixel maintains a steady-state characteristic, and then a direct current is applied to the common electrode and the first electrode, and the ink will move and spread in the area of ​​the pixel grid corresponding to the second electrode, After the voltage is removed, the pixel will maintain steady-state characteristics.

Description

technical field [0001] The invention relates to the technical field of electrowetting display, in particular to a bistable electrowetting display and a preparation method thereof. Background technique [0002] Electrowetting electronic paper display is a new reflective display technology that uses an external electric field to manipulate the surface tension of the polar liquid in the pixel, thereby promoting ink spreading and contraction, and realizing optical switching and grayscale control. The bistable state is the key to the electronic paper display technology to achieve ultra-low energy consumption. Since the birth of self-reflective electrowetting display technology, the exploration of bistable electrowetting display technology has never stopped. In 2008, German Advanced Display Technology Co., Ltd. (ADT) proposed a bistable electrowetting display structure by using the liquid transport characteristics of electrowetting driven by electrode arrays (see reference [1]), ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B26/00
CPCG02B26/005
Inventor 唐彪赵青罗伯特·安德鲁·海耶斯周敏周国富
Owner SOUTH CHINA NORMAL UNIVERSITY
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