Over-current protection circuit and over-current protection method

An overcurrent protection circuit, detection circuit technology, applied in the direction of instruments, static indicators, etc., can solve problems such as panel burnout, GOA circuit short circuit, etc., to prevent burnout

Active Publication Date: 2016-02-03
SHENZHEN CHINA STAR OPTOELECTRONICS TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the manufacturing process of the LCD, if the frame glue of the LCD is not strict, it is ea

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  • Over-current protection circuit and over-current protection method
  • Over-current protection circuit and over-current protection method
  • Over-current protection circuit and over-current protection method

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Embodiment Construction

[0036] 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, not all, embodiments of the present invention. Based on the implementation manners in the present invention, all other implementation manners obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0037] Embodiments of the present invention provide an overcurrent protection circuit and an overcurrent protection method, which can prevent a panel from being burned out. Each will be described in detail below.

[0038] see figure 1 , figure 1 It is an overcurrent protection circuit disclosed by an embodiment of the present invention. like figure 1As shown, the overcurrent protection circuit described in this embodiment includes a power man...

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Abstract

The embodiment of the invention discloses an over-current protection circuit and an over-current protection method. The over-current protection circuit comprises a power source management chip, a level shifter, a GOA circuit driven by a baseplate array row and a current detection circuit, wherein the current detection circuit comprises a current detection module, a current-to-voltage converter and a voltage comparer, a first control end of the power source management chip is connected to an input end of the level shifter, an output end of the level shifter is connected to an input end of the GOA circuit, an output end of the GOA circuit is connected to a first input end of the current detection module, an output end of the current detection module is connected to an input end of the current-to-voltage converter, an output end of the current-to-voltage converter is connected to an input end of the power source management chip, and a second control end of the power source management chip is connected to a second input end of the current detection module. By implementing the over-current protection circuit and the over-current protection method disclosed by the embodiment of the invention, a panel can be prevented from being burnt.

Description

technical field [0001] The invention relates to the technical field of liquid crystal display, in particular to an overcurrent protection circuit and an overcurrent protection method. Background technique [0002] Substrate array line drive (GateOnArray, GOA) technology is a technology that manufactures the gate scanning drive circuit of thin film transistor (ThinFilmTransistor, TFT) on the substrate. Using GOA technology, the panel of liquid crystal display (Liquid Crystal Display, LCD) can be reduced. Border, reduce product cost. The gate voltage of each row of TFTs in the LCD can be provided through the GOA line. In the GOA line, a level shifter (LevelShifter) is generally used to generate a clock control signal to control when the gate voltage of the TFT is turned on or off. Each clock The control signal can control one or more rows of TFTs. In the manufacturing process of the liquid crystal display, if the frame glue of the liquid crystal display is not strict, it is ...

Claims

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Application Information

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IPC IPC(8): G09G3/36
Inventor 张先明曹丹
Owner SHENZHEN CHINA STAR OPTOELECTRONICS TECH CO LTD
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