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Overvoltage protection circuit and device, display panel and display

A technology of overvoltage protection circuit and overvoltage protection device, applied in the field of device, overvoltage protection circuit, display panel and display, can solve the problem of overvoltage protection of the display panel, etc., and achieve the effect of reasonable protection

Active Publication Date: 2022-05-27
MIANYANG HKC OPTOELECTRONICS TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The main purpose of this application is to provide an overvoltage protection circuit, method, array substrate and display panel, which solves the technical problem that the display panel cannot be reasonably overvoltage protected

Method used

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  • Overvoltage protection circuit and device, display panel and display
  • Overvoltage protection circuit and device, display panel and display
  • Overvoltage protection circuit and device, display panel and display

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Embodiment Construction

[0038] It should be understood that the specific embodiments described herein are only used to explain the present application, but not to limit the present application.

[0039] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application.

[0040] refer to figure 1 , figure 1 This is a schematic structural diagram of Embodiment 1 of the overvoltage protection circuit of the present application. refer to figure 1 The first embodiment of the overvoltage protection circuit of the present application is proposed.

[0041] In the first embodiment, the overvoltage protection circuit is used to connect with a power supply and a switching element disposed between the power management integrated circuit and the power supply, and the overvoltage protection circuit includes: an overvoltage detection circuit 10 and an overvoltage counting ...

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PUM

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Abstract

The invention provides an overvoltage protection circuit and device, a display panel and a display. The overvoltage protection circuit comprises an overvoltage detection circuit and an overvoltage counting circuit, the overvoltage detection circuit is connected with a power supply and the overvoltage counting circuit, and the overvoltage counting circuit is connected with the switch element; the overvoltage detection circuit is used for detecting power supply voltage output by the power supply and outputting an overvoltage signal to the overvoltage counting circuit when the power supply voltage is in an overvoltage state; the overvoltage counting circuit outputs a cut-off signal to the switch element to control the switch element to disconnect the connection between the power supply and the power management integrated circuit when the cumulative number of times of receiving the overvoltage signal reaches a preset number of times. According to the method and the device, the power supply voltage output by the power supply is detected, the number of times of occurrence of the overvoltage signal is recorded when the power supply voltage is in the overvoltage state, and overvoltage protection is performed on the display panel when the accumulated number of times reaches the preset number of times, so that reasonable protection on the display panel is realized.

Description

technical field [0001] The present application relates to the field of display technology, and in particular, to an overvoltage protection circuit, a device, a display panel and a display. Background technique [0002] In the display panel, when the input voltage of the power management integrated circuit is too large, the power management integrated circuit may be damaged, thereby affecting the use of the entire display panel. However, the existing display panel usually has an overvoltage protection function, which protects every occurrence of overvoltage, resulting in low use efficiency of the entire display panel. For example, when there is a very low overvoltage protection or the display panel can withstand a certain number of overvoltages, the overvoltage protection (stop power supply) on the display panel at this time will greatly affect the use efficiency of the display panel. How to avoid unnecessary overvoltage protection or perform reasonable overvoltage protectio...

Claims

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Application Information

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IPC IPC(8): H02H3/20H02H1/00G09G3/20
CPCH02H3/20H02H1/0007G09G3/20G09G2330/02G09G2330/04H02H3/202G09G2330/021G09G2330/028G06F1/28G06F1/30G09G3/3406
Inventor 周仁杰李荣荣
Owner MIANYANG HKC OPTOELECTRONICS TECH CO LTD
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