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Display driving process

A driving method and display technology, applied in static indicators, instruments, etc., can solve problems such as driving current reduction, threshold voltage rise, accumulation of trapped charges, etc., and achieve the effect of increasing service life

Inactive Publication Date: 2003-12-31
AU OPTRONICS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

V 2g As a result of the gradual increase, the oxide layer of the gate of TFT2 (110) will accumulate more trap charges, so that the threshold voltage of TFT2 (110) will drift, and the threshold voltage will rise
As a result, the driving current flowing between the drain and the source of TFT2 (110) will be reduced, so the brightness of OLED (104) will be reduced.

Method used

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Embodiment Construction

[0031] Please refer again figure 1 , the driving method of the display of the present invention is for figure 1 In the voltage drive circuit 102, the following will be based on figure 1 , to illustrate the driving method of the present invention.

[0032] The display driving method of the present invention is used for OLED displays. And the supply voltage (V DD ), scanning voltage (V scan ), data voltage (V data ), and the gate voltage of TFT2 (110) (V 2g ) between the timing diagram, please refer to image 3 as shown. Depend on image 3 It can be seen that in this embodiment, the frequency of a frame is increased from the original 60 Hz to 120 Hz. That is to say, the time of one picture is shortened from 1 / 60 second to 1 / 120 second. So if during a frame, when V scan set to a high voltage value, while V data When it is a positive value voltage, then during the period of the next screen, when V scan When set to a high voltage value, V data Will maintain a negative...

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Abstract

The present invention discloses display driving process used for the voltage drive circuit in the display of the organic light-emitting diode. In accordance with the invention, the data voltage is set to be a negative data voltage sustaining a predetermined time during a frame period. When the scanning voltage is set at a high value, the negative data voltage will be supplied to drive the grid electrode of the thin film transistor to make the grid electrode maintain a negative grid electrode voltage for a given time, which will keep the threshold voltage constant used to drive the thin film transistor. Therefore, the invention can increase the operational durability of the display effectively.

Description

technical field [0001] The invention relates to a driving method of a display. Background technique [0002] The earliest moving images that humans can see are movies in the form of documentaries. 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 been extended to desktop monitors in the computer industry, making the 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 field includes Liquid Crystal Display (LCD for short), Field Emission Display...

Claims

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Application Information

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