Power switching control circuit and display device
A technology for controlling circuit and power switching, which is applied to static indicators, instruments, etc., and can solve the problems of slow switching speed of power switching control devices
Active Publication Date: 2020-08-21
SHENZHEN SKYWORTH RGB ELECTRONICS CO LTD
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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
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[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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The invention provides a power switching control circuit and a display device. The power switching control circuit comprises a voltage input end electrically connected with a power supply module, a voltage output end electrically connected with a backlight lamp, a control signal input end, a voltage stabilizing switching circuit, a power switching circuit and a current amplifying circuit; the controlled end of the voltage stabilizing switching circuit is connected with the control signal input end, the first connecting end of the voltage stabilizing switching circuit is connected with the controlled end of the power switching circuit, and the second connecting end of the voltage stabilizing switching circuit is grounded; the controlled end of the current amplification circuit is connectedwith the voltage input end, the input end of the current amplification circuit is connected with the voltage input end, and the output end of the current amplification circuit is connected with the controlled end of the power switching circuit. The input end of the power switching circuit is connected with the voltage input end, and the output end of the power switching circuit is connected with the voltage output end. According to the technical scheme, the problem that a power switching control device is slow in switching when the backlight is driven in a scanning mode can be solved.
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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IPC IPC(8): G09G3/34
CPCG09G3/3406
Inventor 陈水华
Owner SHENZHEN SKYWORTH RGB ELECTRONICS CO LTD