Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

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
View PDF7 Cites 82 Cited by
  • Summary
  • 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 easy to cause a short circuit between the GOA lines in the panel, causing the panel to burn out

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • 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

Examples

Experimental program
Comparison scheme
Effect test

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...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): G09G3/36
Inventor 张先明曹丹
Owner SHENZHEN CHINA STAR OPTOELECTRONICS TECH CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com