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EDP protection circuit

A technology for protecting circuits and resistors. It is applied in the protection of overvoltage, static indicators, instruments, etc. It can solve the problems of damaging the display screen and easily burning the circuit, so as to prevent the voltage from being too high and ensure safety.

Pending Publication Date: 2021-11-30
HONG FU JIN PRECISION IND WUHAN CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this way, when the power supply is abnormal, it is easy to burn the circuit, and then damage the display screen

Method used

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Embodiment Construction

[0033] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, 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.

[0034] It should be noted that when an element is referred to as being "electrically connected" to another element, it may be directly on the other element or there may be an intervening element. When an element is considered to be "electrically connected" to another element, it may be connected by contact, eg, by a wire connection, or non-contact, eg, by a non-contact coupling.

[0035] Unless otherwise defined, all technical and scientific terms used herein ...

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Abstract

An EDP protection circuit is electrically connected between a power supply unit and a display screen, the power supply unit is used for outputting a power supply voltage, and the EDP protection circuit comprises a control chip which is electrically connected with the power supply unit and is used for receiving the power supply voltage; a protection circuit which is electrically connected between the control chip and the display screen, wherein the control chip is used for comparing the power supply voltage with a preset voltage and outputting a corresponding trigger signal to the protection circuit according to a comparison result so as to control the protection circuit to be switched on or switched off and further provide the power supply voltage or stop outputting the power supply voltage to the display screen. The EDP protection circuit is additionally arranged between the power supply unit and the EDP display screen, so the EDP display screen is effectively prevented from being damaged due to too high voltage, and the safety of the EDP display screen is ensured.

Description

technical field [0001] The invention relates to an embedded display port (Enhanced Display Port, EDP) protection circuit. Background technique [0002] At present, the EDP interface can transmit high-resolution signals with simpler connectors and fewer pins, and can realize simultaneous transmission of multiple data. Therefore, the EDP interface can be applied to liquid crystal displays requiring higher resolution. In the prior art, usually the power supply line is directly connected to the EDP interface pin, and then connected to the EDP display screen through the line. In this way, when the power supply is abnormal, it is easy to burn the circuit, and then damage the display screen. Contents of the invention [0003] In view of this, it is necessary to provide an EDP protection circuit to prevent the EDP display screen from being damaged due to excessive voltage. [0004] An EDP protection circuit, electrically connected between a power supply unit and a display scree...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02H3/20G09G3/20
CPCH02H3/20G09G3/20
Inventor 肖倩孙君王太诚
Owner HONG FU JIN PRECISION IND WUHAN CO LTD