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A display device and an overvoltage detection method

A display device, overvoltage technology, applied in the direction of measurement device, measurement of current/voltage, measurement of electrical variables, etc., can solve problems such as safety faults, and achieve the effect of reducing power consumption and simple structure

Inactive Publication Date: 2019-05-07
HISENSE VISUAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Embodiments of the present invention provide a display device and an overvoltage detection method, which are used to solve the problem that a safety failure may occur when the feedback loop in the existing display device is abnormal

Method used

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  • A display device and an overvoltage detection method

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Embodiment Construction

[0065] In order to make the purpose, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Obviously, the described embodiments are part of the implementation of the present invention. example, not all examples. 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.

[0066] The technical solutions provided by the present invention will be illustrated below in conjunction with specific embodiments. In the following specific embodiments, the same or similar concepts or processes may not be repeated in some embodiments.

[0067] figure 1 It is a schematic structural diagram of a display device provided by Embodiment 1 of the present in...

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Abstract

The invention provides a display device and an overvoltage detection method. The display device comprises a circuit board; The circuit board comprises a feedback circuit, an overvoltage protection circuit and a functional circuit; The feedback circuit is used for determining the voltage of the feedback end according to the output voltage of the output end of the functional circuit; The overvoltageprotection circuit is used for indicating the output voltage of the output end to the overvoltage detection end of the functional circuit through the overvoltage indication end; And the functional circuit is used for controlling the functional circuit to stop working when the overvoltage detection end detects that the voltage of the output end of the functional circuit is greater than the presetworking voltage after the display device enters the preset time period after the display device enters the working state. The overvoltage protection circuit and the functional circuit can play an overvoltage protection role when the feedback circuit is abnormal.

Description

technical field [0001] The invention relates to the technical field of electronic equipment, in particular to a display device and an overvoltage detection method. Background technique [0002] With the development of science and technology and the increasing needs of users, there are more and more electrical equipment in users' homes, providing users with all-round convenience and entertainment. Household appliances generally include a power module, which is used to convert AC power provided by the grid into DC power. During the power conversion process, current harmonics will be generated, and the injection of current harmonics into the power grid will cause interference to the power grid and affect other electrical equipment in the power grid. With the wide application of various household appliances, the interference of current harmonics to the power grid has become increasingly prominent. [0003] At present, a method of adding a power factor correction (Power Faction...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/00G01R19/00
CPCG01R19/00G09G3/00
Inventor 迟洪波
Owner HISENSE VISUAL TECH CO LTD
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