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Driving circuit of display capable of preventing charge from accumulating

A charge accumulation and drive circuit technology, applied to static indicators, instruments, etc., to achieve the effect of preventing charge accumulation and high contrast value

Inactive Publication Date: 2004-02-25
AU OPTRONICS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The present invention adds two thin-film transistors to the driving circuit of each pixel of the display, so that the anode of the light-emitting device does not have the problem of charge accumulation during the manufacturing process, so the problem of point defects can be solved

Method used

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  • Driving circuit of display capable of preventing charge from accumulating
  • Driving circuit of display capable of preventing charge from accumulating
  • Driving circuit of display capable of preventing charge from accumulating

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Experimental program
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Embodiment Construction

[0027] The purpose of the present invention is to enable the pixel charges to be evenly distributed throughout the display panel, without causing point defects due to the accumulation of excessive charges by a single charge. On the other hand, due to the uniform distribution of charges, the anode of the light-emitting device (that is, ITO) must be equipotential, but after the anode of the light-emitting device is equipotential, it will affect the function of the entire display panel and cannot work normally. Because after the anode of the light-emitting device is equalized, it will be unable to distinguish different voltages provided by the data integrated circuit, so that the display may not be able to generate images. Therefore, the improvement of the present invention not only enables the pixel charge to be evenly distributed throughout the display panel, but also enables the display to function normally.

[0028]Next please refer to figure 2 , which shows a circuit diagr...

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Abstract

The present invention relates to a driving circuit of display which can prevent charges from accumulating. In driving circuit of every pixel of the display two film transistors are added, and in the course of preparation process. When the charges accumulated on the anode of the luminescent device are positive charges and the electric potential or anode of the luminescent device is greater than the potential of the common positive power line of panel, the charges can be flowed into the common positive power line of panel from a film transistor, and when the above-mentioned accumulated charges are negative charges and the above-mentioned electric potential is less than that of common negative power line, the current can be flowed into the anode of the luminescent device from another film transistor to neutralize negative charges.

Description

technical field [0001] The present invention relates to a display driving circuit, and in particular to a display driving circuit capable of preventing charge accumulation. Background technique [0002] The earliest moving images that humans can see are documentary-style movies. Afterwards, the invention of the cathode ray tube (Cathode Ray Tube, referred to as CRT) successfully derived commercial TV sets and became a must-have household appliance for every family. With the development of science and technology, the application of CRT has expanded to desktop monitors in the computer industry, making CRT popular for nearly decades. However, all types of displays made of CRTs face the problem of radiation, and because of the structure of the internal electron gun, the display is bulky and takes up space, which is not conducive to thinness and light weight. [0003] Due to the above-mentioned problems, researchers have begun to develop so-called flat panel displays. This fie...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/3258
Inventor 李纯怀
Owner AU OPTRONICS CORP