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Overcurrent protection circuit, display panel and display device

An overcurrent protection circuit and voltage technology, applied in the direction of adjusting electrical variables, control/regulation systems, instruments, etc., can solve the problems of display panel heating, short circuit, burning display panel, etc., and achieve the effect of preventing circuit burnout

Active Publication Date: 2017-06-13
HKC CORP LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Among them, the side of the gate drive circuit (Gate-Chip on Film, G-COF) in the fan-out area of ​​the display panel includes high-voltage signal lines such as gate-on voltage, gate-off voltage, and reference voltage. Short circuit phenomenon caused by foreign matter, large current signal is generated to cause the display panel to heat up, and the display panel can be burnt seriously

Method used

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

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Embodiment Construction

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Apparently, the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0030] It should be understood that when used in this specification and the appended claims, the terms "comprising" and "comprises" indicate the presence of described features, integers, steps, operations, elements and / or components, but do not exclude one or Presence or addition of multiple other features, integers, steps, operations, elements, components and / or collections thereof.

[0031] Please refer to Figure 1 to Figure 2 , which is a schematic structural diagram...

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Abstract

The embodiment of the invention provides an overcurrent protection circuit. The overcurrent protection circuit comprises a voltage conversion unit, a reference voltage generation unit, a voltage comparison unit and a switch unit; the voltage conversion unit is used for receiving input voltage and converting the input voltage to generate modulation voltage; the reference voltage generation unit is used for generating reference voltage used for being compared with the modulation voltage; the voltage comparison unit is electrically connected with the voltage conversion voltage and the reference voltage generation unit and used for comparing the modulation voltage with the reference voltage to generate a corresponding control signal; the switch unit is electrically connected with the voltage comparison unit and the voltage conversion unit and used for determining whether to output the modulation voltage or not according to the control signal. By means of the overcurrent protection circuit, the phenomenon of circuit burnout caused by short-circuiting can be effectively prevented.

Description

technical field [0001] The invention relates to the field of display technology, in particular to an overcurrent protection circuit, a display panel and a display device. Background technique [0002] Thin Film Transistor Liquid Crystal Display (TFT-LCD) is one of the main types of flat panel displays at present. The main driving principle of thin film transistor liquid crystal display is: the system board connects the R / G / B compressed signal, control signal and power to the connector on the control board (Control Board) through the wire, and the data passes through the timing sequence on the control board. After being processed by the Timing Controller (TCON), it is transmitted to the Printed Circuit Board (Printed Circuit Board) through the Flexible Flat Cable (FFC), through the Source-Chip on Film (S-COF) and gate A gate-chip on film (G-COF) drive circuit (Gate-Chip on Film, G-COF) is connected to the display area on the display panel, so that the display panel can obtai...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05F1/56
CPCG05F1/56
Inventor 陈猷仁
Owner HKC CORP LTD
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