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Power supply switching control circuit and display device

A technology for controlling circuit and power switching, applied to static indicators, instruments, etc., can solve the problem of slow switching speed of power switching control devices, and achieve the effect of avoiding crossover of opening time and accelerating disconnection speed

Active Publication Date: 2021-09-03
SHENZHEN SKYWORTH RGB ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention provides a power switching control circuit and a display device, aiming to solve the problem of slow switching speed in the power switching control device that currently adopts scanning mode to drive high partition backlights

Method used

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  • Power supply switching control circuit and display device
  • Power supply switching control circuit and display device
  • Power supply switching control circuit and display device

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Embodiment Construction

[0042] 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 part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0043] It should be noted that if there is a directional indication (such as up, down, left, right, front, back...) in the embodiment of the present invention, the directional indication is only used to explain the position in a certain posture (as shown in the accompanying drawing). If the specific posture changes, the directional indication will also change accordingly.

[0044] In addition, if there are descriptions involving "first", "second" and ...

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Abstract

The present invention provides a power switching control circuit and a display device. The power switching control circuit includes a voltage input terminal electrically connected to a power supply module, a voltage output terminal electrically connected to a backlight, a control signal input terminal, a voltage stabilizing switch circuit, a power supply Switching circuit and current amplification circuit; the controlled end of the voltage stabilizing switch circuit is connected to the control signal input end, the first connecting end of the voltage stabilizing switching circuit is connected to the controlled end of the power switching circuit, and the second connecting end of the voltage stabilizing switching circuit Grounding; the controlled end of the current amplifying circuit is connected to the voltage input end, the input end of the current amplifying circuit is connected to the voltage input end, the output end of the current amplifying circuit is connected to the controlled end of the power switch circuit; the input end of the power switch circuit is connected to the The voltage input terminal is connected, and the output terminal of the power switch circuit is connected with the voltage output terminal. The technical scheme of the invention can solve the problem of slow switching of the power switching control device when the backlight is driven in a scanning mode.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a power switching control circuit and a display device. Background technique [0002] As a new technology with promising market prospects, Mini LED (also known as millimeter light-emitting diode) has attracted much attention from the industry. Mini LED backlight has the characteristics of light and thin, high image quality, and low power consumption. In addition, the Mini LED backlight can be combined with fine area division technology to control the switch and brightness of the corresponding backlight area in real time according to the brightness and darkness of the screen in the TV signal, making the black area in the screen darker, showing high contrast and brighter colors. gorgeous. [0003] Mini LEDs are usually powered by high voltage, and the Mini LEDs are driven by a scanning backlight driving method. Using scanning backlight driving method to drive Mini LED technical...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/34
CPCG09G3/3406
Inventor 陈水华
Owner SHENZHEN SKYWORTH RGB ELECTRONICS CO LTD