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Overcurrent protection circuit and display device

An overcurrent protection circuit and resistance technology, applied in emergency protection circuit devices, electrical components, static indicators, etc., can solve the problems of power management module damage, LCD current increase, LCD short circuit to ground, etc.

Inactive Publication Date: 2019-04-16
HKC CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Based on this, it is necessary to provide an overcurrent protection circuit and a display device for the power supply transmitted from the power management module to the LCD, which may cause abnormalities such as LCD short circuit to ground, resulting in an abnormal increase in the LCD current and damage to the power management module.

Method used

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  • Overcurrent protection circuit and display device

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Embodiment Construction

[0032] In order to facilitate the understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. Preferred embodiments of the application are shown in the accompanying drawings. However, the present application can be embodied in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the application more thorough and comprehensive.

[0033] It should be noted that when an element is referred to as being “fixed” to another element, it can be directly on the other element or there can also be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and similar expressions are used herein for purposes of ill...

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PUM

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Abstract

The invention relates to an overcurrent protection circuit. The overcurrent protection circuit comprises a switch module, a voltage dividing module, a detection module and a control module, wherein the switch module is connected to a load; the voltage dividing module is connected between a power supply management module and the switch module, and is used for carrying out voltage division to reducethe voltage of the load when the current of the load is increased; the detection module is connected to the switch module and is used for detecting the voltage of the load through the switch module;and the control module is respectively connected to the detection module and the switch module, and is used for controlling cut-off of the switch module when the voltage of the load is smaller than apreset voltage in order to cut off the connection between the power supply management module and the load.

Description

technical field [0001] The present application relates to the field of display technology, in particular to an overcurrent protection circuit and a display device. Background technique [0002] TFT-LCD (Thin Film Transistor Liquid Crystal Display, Thin Film Transistor Liquid Crystal Display) is one of the main varieties of flat panel display, and has become an important display platform in modern IT and video products. The main driving principle of TFT-LCD is: the system motherboard connects the R / G / B compressed signal and control signal to the connector on the PCB board through the wire, and the data passes through the TCON (Timing Controller, timing controller) on the PCB board. ) After the integrated circuit (IC) is processed, the PCB board is connected to the display area through S-COF (Source-Chip on Film) and G-COF (Gate-Chip on Film), so that the LCD can obtain the required signal; the system motherboard The motherboard power is transmitted to the power management mo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/36H02H7/20
CPCG09G3/36G09G2330/00H02H7/20
Inventor 黄笑宇
Owner HKC CORP LTD