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Electrophoretic display

A technology of electrophoretic display and display surface, which is applied to static indicators, instruments, optics, etc., and can solve problems such as errors in rewriting display content, voltage drop, etc.

Inactive Publication Date: 2002-04-17
E INK CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although an appropriate voltage can be timely applied to the pixel electrode before an error occurs in the rewritten display content, the electromagnetic leakage of the pixel transistor will cause the voltage applied to the pixel electrode to continuously decrease, so the display content will still be rewritten. error occurred when

Method used

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Examples

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Embodiment Construction

[0039] The present invention will be described in more detail below by way of example with reference to the accompanying drawings.

[0040] The electrophoretic display of the present invention can be used in electronic books, an example such as image 3 shown. which is, image 3 Shown is an overview of an electronic book 31 using the electrophoretic display of the present invention. The electronic book 31 is mainly composed of a frame 32 and an open / close cover 33 . The display 34 is mounted in the frame 32 so that the display surface faces outwards and is controlled by switches or buttons provided in the operation control area 35 . Inside the frame 32 are the controller 26, the counter 37 and the memory 38, such as Figure 4 shown. The display 34 provides a pixel array section 39 constructed using thin film elements filled with electrophoretic ink, and also provides a peripheral circuit 40 whose circuit components are integrated. The pixel array section 39 and the perip...

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Abstract

An electrophoretic display using electrophoretic ink is configured by a transparent substrate (112), a common electrode (113), pixel electrodes (114), and thin-film transistors (116). An electrophoretic ink layer, which is arranged between the common electrode and pixel electrodes, is actualized by a linear arrangement of microcapsules each of which contains negatively charged white particles (215) dispersed in a liquid (214) having a specific color. All the pixel electrodes are simultaneously set to the low electric potential while the common electrode is set to the high electric potential so that the display content is erased from the entire area of the display surface at once, and then the pixel electrodes are driven respectively in response to display data while the common electrode is set to the low electric potential so that the display content is rewritten with a new one in response to the display data.

Description

technical field [0001] The present invention relates to displays, such as liquid crystal displays, in particular electrophoretic displays that display images according to the electrophoretic effect using a display medium such as electrophoretic ink. Background technique [0002] Generally known to scientists and engineers, the electrophoresis effect, in which charged particles dispersed in a fluid or liquid medium move under the action of an electric field. An example of the application of the electrophoresis effect is that engineers are trying to achieve display by using charged pigment particles distributed and contained in a pigment solution disposed between a pair of electrodes, a technique such as that disclosed in Japanese Patent No. 900963 . The action of the electric field attracts the charged pigment particles to an electrode so that the desired image is displayed. A pigment solution with charged pigment particles distributed therein is called electrophoretic ink,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B5/20G02F1/167G09G3/20G09G3/34
CPCG09G2310/04G09G2310/061G09G2310/0267G02F1/167G09G2330/021G09G2300/08G09G2310/0245G09G2310/063G09G2310/0275G09G3/344
Inventor 井上聪
Owner E INK CORPORATION
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