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Control method of backlight circuit, backlight circuit and LCD display

A control method and backlight circuit technology, applied to static indicators, instruments, etc., can solve the problems of complex structure of LCD display screen, complex manufacturing process of LCD display screen, increased manufacturing cost, etc.

Active Publication Date: 2021-04-20
BEIJING XIANXIN TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, in the prior art, it is necessary to add a sensor for detecting the LED temperature in the LCD display, change the structure of the LCD display, make the structure of the LCD display more complicated, and further complicate the manufacturing process of the LCD display and increase the manufacturing cost.

Method used

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  • Control method of backlight circuit, backlight circuit and LCD display
  • Control method of backlight circuit, backlight circuit and LCD display
  • Control method of backlight circuit, backlight circuit and LCD display

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Embodiment Construction

[0040] In order to make the purpose, technical solutions and advantages of this application clearer, the technical solutions in this application will be clearly and completely described below in conjunction with the accompanying drawings in this application. Obviously, the described embodiments are part of the embodiments of this application , but not all examples. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

[0041] LCD display screens are important components of many electronic devices, such as: televisions equipped with LCD display screens, monitors equipped with LCD display screens, and the like. Such as figure 1 As shown, an embodiment of the present application provides an LCD display screen structure. Wherein, the LCD display screen includes a cover plate 101 , a liquid crystal panel 102 , a backlight structure...

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Abstract

The present application provides a control method of a backlight circuit, a backlight circuit and an LCD display screen, and obtains a plurality of dimming data within a preset time period, wherein the dimming data is used to control the backlight light source to emit light. A plurality of dimming data to determine the total accumulated power received by the backlight light source, and if the total accumulated power reaches a preset power threshold, a first voltage control signal is generated, wherein the first voltage control signal is used to reduce the operating voltage of the backlight light source, and the backlight light source The backlight that meets the preset brightness can continue to be provided during the step-down operation. This solution can reduce the power consumption of the backlight light source without changing the structure of the backlight circuit, without changing the manufacturing process of the backlight circuit, and without increasing the manufacturing cost of the backlight circuit.

Description

technical field [0001] The present application relates to the technical field of display devices, and in particular to a method for controlling a backlight circuit, the backlight circuit and an LCD display screen. Background technique [0002] With the development of technology, a liquid crystal display (LCD display for short) has become an important component of many electronic devices. [0003] An LCD display is usually composed of a liquid crystal panel and a backlight circuit. The backlight circuit is located under the liquid crystal panel and is used to provide backlight for the liquid crystal panel. In the prior art, a light emitting diode (Light Emitting Diode, referred to as: LED) is used as a backlight source, and a sensor is used to obtain the temperature of the LED. When it is determined that the temperature of the LED rises to the temperature threshold, the input voltage of the LED is reduced to reduce the LED Consume power, reduce the calorific value of LED, a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/34
CPCG09G3/3406G09G2330/021G09G2320/041
Inventor 李起源林荣镇严丞辉
Owner BEIJING XIANXIN TECH CO LTD
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