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A display panel and its overcurrent protection method and display device

A technology for overcurrent protection and display devices, which is applied to emergency protection circuit devices, emergency protection devices with automatic disconnection, circuit devices, etc., and can solve problems such as burn-in screens and in-plane circuit short circuits

Active Publication Date: 2021-04-02
HKC CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Regarding the application of the Gate Driver on Array (GOA) technology on the array substrate, there will be a short circuit in the plane, which will cause the problem of screen burn-in

Method used

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  • A display panel and its overcurrent protection method and display device
  • A display panel and its overcurrent protection method and display device
  • A display panel and its overcurrent protection method and display device

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Embodiment Construction

[0041] Specific structural and functional details disclosed herein are representative only and for purposes of describing example embodiments of the present invention. This invention may, however, be embodied in many alternative forms and should not be construed as limited to only the embodiments set forth herein.

[0042]In describing the present invention, it is to be understood that the terms "central", "lateral", "upper", "lower", "left", "right", "vertical", "horizontal", "top", The orientation or positional relationship indicated by "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying the referred device Or elements must have a certain orientation, be constructed and operate in a certain orientation, and thus should not be construed as limiting the invention. In addition, the ter...

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Abstract

The invention discloses an overcurrent protection method, a display panel and a display device. An overcurrent protection method comprises the steps of: setting at least two different detection times for the level period of the driving current, and starting at least two groups of corresponding The over-current protection threshold; in one level cycle, detect at least two real-time currents for at least two different detection times; compare the real-time current value and the corresponding over-current protection threshold, if there is one or more than one When the real-time current value exceeds the corresponding over-current protection threshold, the output drive current is stopped to activate the over-current protection; it can effectively prevent the display panel from continuing to work under large short-circuit current, and it can also prevent screen burn-in problems caused by severe short-circuits, making the protection more effective. precise.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a display panel, an overcurrent protection method thereof, and a display device. Background technique [0002] With the development and progress of science and technology, liquid crystal displays have become the mainstream products of displays due to their thin body, power saving and low radiation, and have been widely used. Most of the liquid crystal displays currently on the market are backlight liquid crystal displays, which include a liquid crystal panel and a backlight module (Backlight Module). The working principle of the liquid crystal panel is to place liquid crystal molecules between two parallel glass substrates, and apply a driving voltage on the two glass substrates to control the rotation direction of the liquid crystal molecules, so as to refract the light from the backlight module to produce a picture. [0003] Among them, Thin Film Transistor-Liquid Crystal Dis...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02H3/087H02H3/093G09G3/36
CPCH02H3/093G09G3/3677G09G2330/12G09G3/36G09G2310/08H02H3/087H02H3/0935
Inventor 杨继东
Owner HKC CORP LTD
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