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Display device and shutdown discharge method

A technology for display devices and shutdown, which is applied to static indicators, instruments, etc., and can solve the problems of residual image after shutdown and slow discharge speed of shutdown of the display panel, so as to improve the display effect and improve the viewing experience

Active Publication Date: 2022-04-12
MIANYANG HKC OPTOELECTRONICS TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of this application is to provide a display device and a power-off discharge method. By short-circuiting the pixel electrodes for discharge during power-off, the problem of after-image after power-off on the display panel caused by the slow power-off discharge speed of the pixel electrodes is solved.

Method used

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  • Display device and shutdown discharge method
  • Display device and shutdown discharge method
  • Display device and shutdown discharge method

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Embodiment Construction

[0028] It should be understood that the terminology and specific structural and functional details disclosed herein are representative only for describing specific embodiments, but the application can be embodied in many alternative forms and should not be construed as merely Be limited by the examples set forth herein.

[0029] In the description of the present application, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating relative importance, or implicitly indicating the quantity of indicated technical features. Therefore, unless otherwise specified, the features defined as "first" and "second" may explicitly or implicitly include one or more of these features; "plurality" means two or more. The term "comprising" and any variations thereof mean non-exclusive inclusion, possible presence or addition of one or more other features, integers, steps, operations, units, components and / or combinations thereof.

[0030] Al...

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Abstract

The invention discloses a display device which comprises a pixel electrode, a charge elimination circuit, a piezoresistor and a control circuit, the piezoresistor is connected with the pixel electrode and the charge elimination circuit, the piezoresistor is provided with a threshold voltage, and the control circuit is coupled with the piezoresistor and used for controlling the piezoresistor to be turned on or turned off; wherein when the display device is shut down, the control circuit controls the piezoresistor to be conducted so as to communicate the pixel electrode with the charge elimination circuit, and the pixel electrode discharges through the charge elimination circuit; when the display device works normally, the control circuit controls the piezoresistor to be turned off, the pixel electrode is disconnected from the charge elimination circuit, and the pixel electrode is subjected to short-circuit discharge during shutdown, so that the problem that shutdown ghost shadows appear on a display panel due to slow shutdown discharge speed of the pixel electrode is solved.

Description

technical field [0001] The present application relates to the field of display panels, in particular to a display device and a shutdown discharge method. Background technique [0002] During the normal operation of the display panel, a certain amount of charge will accumulate on the pixel electrodes in the display panel. When the power is turned off, the gate lines are opened, and the pixel electrodes can be reversely discharged through the data lines, but the reverse discharge speed of the pixel electrodes is relatively slow. Slow, because the charge of the pixel electrode cannot be quickly eliminated, resulting in a certain voltage difference between the pixel electrode and the common electrode, so that the liquid crystal molecules will deflect when the power is turned off, and then there will be a phenomenon of power-off residual image on the display panel , which affects the display effect of the display panel and gives the user an impression of poor viewing experience. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/36
Inventor 唐榕袁海江
Owner MIANYANG HKC OPTOELECTRONICS TECH CO LTD
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