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Current foldback circuit and display device

An over-current protection circuit, high-potential technology, used in static indicators, instruments, etc., can solve problems such as large heat generation and burnout

Inactive Publication Date: 2019-03-08
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 for the lack of effective detection of the driving current of the liquid crystal display panel in the existing GDL circuit. device

Method used

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  • Current foldback circuit and display device
  • Current foldback circuit and display device
  • Current foldback 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. A preferred embodiment of the application is shown in the 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 this application more thorough and comprehensive.

[0033] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this application belongs. The terms used herein in the specification of the application are only for the purpose of describing specific embodiments, and are not intended to limit the application. As used herein, the term "and / or" includes any and all combinations of one or more of the associa...

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PUM

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Abstract

The invention relates to a current foldback circuit, and the current foldback circuit comprises a master control module, a current detection module and a time-delay module; the main control module isconnected to an input end and an output end, which is used to convert a low potential logic signal input by the input end into a high potential driving signal and output the driving signal through theoutput end; the current detection module is connected to the main control module and the output end for detecting an output current of the output end; the time-delay module is connected to the current detection module and the main control module for setting the time for transmission of the output current by the current detection module to the main control module; and the main control module is further configured to calculate an effective value of the output current to control whether the high-potential driving signal is output or not according to the effective value. The above-mentioned current foldback circuit can effectively detect the driving current of a liquid crystal display panel, and can prevent the liquid crystal display panel from being burnt due to excessive heat generation.

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] As people's demand for narrow bezel TVs becomes stronger and stronger, GDL (Gate driver less, no gate driver) liquid crystal display panels are becoming more and more popular. The GDL circuit is composed of level shifter IC (boost integrated circuit) and shift register (shift register). The level shifter IC is set on the driver board, the shift register is set on the liquid crystal display panel, and the level shifter IC transmits the CLK (Clock) signal Complete the driving of the liquid crystal display panel for the shift register. The level shifter IC is disposed on the driving board so that the frame length of the liquid crystal display panel can be reduced. [0003] Due to defects in the manufacturing process of the liquid crystal display panel, the phenomenon of excessive drivi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/36G09G3/00
CPCG09G3/006G09G3/36
Inventor 张良
Owner HKC CORP LTD