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Method for driving display

A driving method and display technology, applied in static indicators, instruments, semiconductor lamps, etc., can solve problems such as uneven brightness and threshold voltage shift of thin film transistors

Active Publication Date: 2008-06-25
AU OPTRONICS CORP
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0010] In view of the above-mentioned problems caused by the driving method of the existing active display, the present invention proposes an electroluminescent display driving method to solve the problem of critical voltage drift of thin-film transistors and uneven brightness caused by timing control
[0012] Another object of the present invention is to provide a driving method for an electroluminescence display, which is used to solve the problem of uneven brightness caused by timing control

Method used

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Embodiment Construction

[0042] The "electroluminescence display and its driving method" of the present invention will be described in detail in conjunction with the drawings, and the preferred embodiments will be described as follows:

[0043]In the electroluminescence display of the present invention, the circuit diagram of the OLED pixel array and its pixel structure are shown in FIGS. 2A-2B . The electroluminescent display has M scanning lines Scan, N data lines Data and a pixel array of M columns and N rows. The pixel array has M×N pixels for displaying a frame in a display period. Each pixel P has a switching transistor Ta, a driving transistor Tb, a light emitting unit D and a capacitor C. As shown in FIG. The source S and the gate G of the switch transistor Ta are respectively connected to a data line Data and a scan line Scan. The drain and source S of the driving transistor Tb are respectively electrically connected to a display voltage source V DD And the light emitting unit D, the gate ...

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Abstract

The invention is a driving method for a display device, applied to an electrically lighting display device which has plural pixel columns, where each pixel comprises a lighting cell, a switch transistor and a drive transistor connected to the switch transistor and the lighting cell. And the driving method controls the electrically lighting display device to display a frame picture in a display period and comprises the steps of: defining the display period which has three time intervals; in order starting up the pixel columns in the first and second time intervals; providing a displayed data for the pixel columns in the first time interval; providing a gray level data for the pixel columns in the second time interval; and resetting the pixel columns in the third time interval.

Description

technical field [0001] The present invention relates to a driving method of a display, in particular to a driving method of an electroluminescent display with a thin film transistor electrical reset program. Background technique [0002] The organic light emitting diode is a current-driven element, and its luminous brightness changes with the current passing through the organic light emitting diode. Active devices of OLEDs include polysilicon thin film transistors (LTPS-TFTs) and amorphous silicon thin film transistors (a-Si TFTs). Among them, polysilicon thin-film transistors are more commonly used in the industry today; amorphous silicon thin-film transistors will become the future trend because of the small number of masks required for its manufacturing process, low film forming temperature and low cost. However, whether it is a polysilicon thin film transistor or an amorphous silicon thin film transistor, there is a problem that the threshold voltage value rises to caus...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/30G09G3/32H05B33/08G09G3/3258H05B44/00
CPCY02B20/346Y02B20/30
Inventor 唐宇骏叶政男
Owner AU OPTRONICS CORP
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