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Display driving method, display panel and display device

A display panel and display drive technology, applied to static indicators, instruments, etc., can solve problems such as abnormal display of OLED display screens, drift of drive transistor characteristic curves, etc.

Active Publication Date: 2015-04-08
WUHAN TIANMA MICRO ELECTRONICS CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Embodiments of the present invention provide a display driving method, a display panel and a display device, which are used to solve the problem that when the OLED display panel is powered off and then powered on again, the characteristic curve of the driving transistor will drift due to the hysteresis effect of the driving transistor, so that OLED display screen display abnormal problem

Method used

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  • Display driving method, display panel and display device
  • Display driving method, display panel and display device

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Embodiment Construction

[0020] In the display driving method, display panel and display device provided by the embodiments of the present invention, within a preset period of time after the display panel is powered on, the transistor in the pixel compensation circuit used to turn on the organic light emitting diode driven by the pixel compensation circuit is controlled to turn off. and control the drive transistor in the pixel compensation circuit to be turned on, so that a current flows between the source of the drive transistor and the drain of the drive transistor, thereby eliminating the hysteresis effect of the drive transistor in the pixel compensation circuit , so that the characteristic curve of the drive transistor returns to normal, therefore, after the preset time period after the display panel is powered on, the display panel can display the picture normally; wherein, the preset time period is not less than the time length for the display panel to display a frame of picture .

[0021] The...

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Abstract

The invention provides a display driving method, a display panel and a display device, solving a problem that the abnormality of displaying a picture of an OLED (Organic Light-Emitting Diode) display is caused by the hysteresis effect of a driving transistor when an OLED display panel is powered off and is electrified again. The method comprises the steps: within the present duration after the electrification of the display panel, controlling the on-off of a transistor for lighting up an organic LED driven by a pixel compensation circuit in the pixel compensation circuit, controlling the switch-on of the driving transistor in the pixel compensation circuit and enabling electricity current to run between the source electrode and the drain electrode of the driving transistor; within the present duration after the electrification of the display panel, controlling the pixel compensation circuit to drive the organic LED to emit light according to received data signals, wherein the preset duration is not smaller than the time duration of displaying a picture frame by the display panel.

Description

technical field [0001] The present invention relates to the field of display technology, in particular to a display driving method, a display panel and a display device. Background technique [0002] The current organic light-emitting diodes (OLED, Organic Light-Emitting Diode) are mostly driven by low-temperature polysilicon (LTPS, Low Temperature Poly-Sillicon) backplanes. Due to the unevenness of the low-temperature polysilicon backplanes during the manufacturing process, it will cause There are differences in the threshold voltages of the transistors, so that when different OLEDs receive the same data signal, the drain currents of the transistors that drive them to emit light are different, which in turn leads to uneven brightness of the screen of the OLED display. [0003] At present, pixel compensation circuits are generally used to improve the problem of different threshold voltages, and pixel compensation circuits in the form of diode connections are commonly used pi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/32G09G3/3225
Inventor 钱栋
Owner WUHAN TIANMA MICRO ELECTRONICS CO LTD
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