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Circuit control method and power management module

A technology of a power management module and a control method, which is applied to instruments, static indicators, etc., can solve problems such as easy heating of circuits, influence on display effects, and unsatisfactory control effects, and achieve the effects of preventing heat generation and prolonging service life

Inactive Publication Date: 2020-06-19
TCL CHINA STAR OPTOELECTRONICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] This disclosure provides a circuit control method and a power management module to solve the problem that in the control part of the existing circuit, the reference voltage and the display output voltage cannot be changed synchronously, the control effect is not ideal, the circuit is prone to heat, and the display effect is affected.

Method used

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  • Circuit control method and power management module

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Embodiment Construction

[0029] The technical solutions in the embodiments of the disclosure will be clearly and completely described below in conjunction with the drawings in the embodiments of the disclosure. Apparently, the described embodiments are only some of the embodiments of the present disclosure, not all of them. Based on the embodiments in the present disclosure, all other embodiments obtained by those skilled in the art without creative efforts fall within the protection scope of the present disclosure.

[0030] A display panel is composed of many different devices and various driving circuits. When the display panel is working, when the voltage changes associated with different modules in the drive circuit are not synchronized, it is easy to cause excessive heat inside the panel. For example, in the chip-on-film area, excessive heat will seriously affect the The normal operation of the display panel, thereby reducing the display effect of the panel and reducing its service life.

[003...

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Abstract

The invention provides a circuit control method and a power management module. The control method of the circuit comprises the following steps: firstly, inputting a second reference voltage and a fixed voltage into the circuit; obtaining a voltage value of the first voltage; further, the first voltage and the first reference voltage are input; comparing the first voltage with a first reference voltage to obtain a second voltage; and obtaining a gamma voltage value of the power supply management module according to the second voltage, and adjusting and controlling the circuit. According to thecontrol method disclosed by the invention, the reference voltage and the working output voltage can be intelligently controlled, the voltage obtained by the screen is ensured to be the optimal outputvoltage, and meanwhile, the problems of non-ideal voltage regulation in the circuit, unstable voltage difference, abnormal picture and the like are reduced.

Description

technical field [0001] The disclosure relates to the field of integrated circuits, in particular to a circuit control method and a power management module. Background technique [0002] TFT-LCD includes not only liquid crystal display screen, backlight and other devices, but also circuit control system. The coordination and cooperation between the various parts make the panel work properly. [0003] In the circuit control system, when supplying power to the equipment, due to the instability of the mains voltage, especially in some power supply places, the voltage fluctuation range is particularly large, and the external voltage is input into the equipment, it is necessary to convert the fluctuating power supply voltage into a stable usable Voltage, such as the output gamma voltage when the display panel is working normally, in the prior art, when processing the voltage, a fixed reference voltage is often set first, and then the gamma voltage when the device is working norma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/36
CPCG09G3/36G09G3/3696G09G2330/02
Inventor 张先明
Owner TCL CHINA STAR OPTOELECTRONICS TECH CO LTD