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Power supply circuit of liquid crystal display

A technology of liquid crystal display and power supply circuit, applied in static indicators, instruments, electrical digital data processing, etc., to achieve the effect of saving unnecessary power consumption

Inactive Publication Date: 2011-04-27
INNOCOM TECH (SHENZHEN) CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the technical problem that the prior art liquid crystal display power supply circuit has unnecessary power consumption in sleep mode, it is necessary to provide a liquid crystal display power supply circuit that saves unnecessary power consumption in sleep mode

Method used

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  • Power supply circuit of liquid crystal display
  • Power supply circuit of liquid crystal display
  • Power supply circuit of liquid crystal display

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0013] see figure 2 and image 3 ,in figure 2 It is a schematic diagram of the first embodiment of the liquid crystal display power supply circuit 200 of the present invention, image 3 It is a schematic diagram of the second embodiment of the liquid crystal display power supply circuit 200 of the present invention.

[0014] Such as figure 2 As shown, in the first embodiment, the liquid crystal display power supply circuit 200 includes a motherboard switch circuit 230, a power switch circuit 240 and figure 1 The liquid crystal display power supply 110 and the first power supply unit 150 are shown. The first power supply unit 150 is used to supply the power of a motherboard or the power of the LCD power supply 110 to the microprocessor 130 through the motherboard switch circuit 230 or the power switch circuit 240 . When the display enters the normal operation mode, the liquid crystal display power supply circuit 200 turns off the motherboard switch circuit 230 and turns...

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PUM

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Abstract

The invention relates to a power supply circuit of a liquid crystal display, comprising a main board switch circuit, a liquid crystal display power supply, a power switch circuit and a first power supply unit, wherein an input end of the main board switch circuit is coupled with a power output end of a main board; an input end of the power switch circuit is coupled with the liquid crystal displaypower supply; and the first power supply unit is coupled with an output end of the main board switch circuit, an output end of the power switch circuit and a microprocessor and is used for supplying the power of the main board or the liquid crystal display power supply to the microprocessor. The power supply circuit of the liquid crystal display is isolated from the liquid crystal display power supply under the sleep mode of the display, and the main board which needs to be powered at any time is used to carry out power supply under the sleep mode, therefore, the unnecessary power consumptionof the liquid crystal display power supply under the sleep mode is eliminated.

Description

technical field [0001] The invention relates to a display power supply circuit, in particular to a liquid crystal display power supply circuit. Background technique [0002] A general liquid crystal display enters a sleep mode to save power consumption, and uses a single display power supply to supply the required power of the liquid crystal display in normal operation mode and sleep mode. The components of the liquid crystal display that need to be supplied with power mainly include a display panel, a microprocessor, and an operation integrated circuit; and the potential of the display power supply is about 5 volts, the power supply required by the display panel is about 5 volts, and the power supply required by the microprocessor is about 5 volts. It is 3.3 volts, and the power supply required by the operational integrated circuit is about 1.8 volts. [0003] see figure 1 , which is a schematic diagram of a liquid crystal display power supply circuit 100 in the prior art...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/36
CPCG06F1/3265Y02B60/1242G09G2330/021G06F1/3203G09G3/3611G09G2330/02G09G2330/022Y02D10/00
Inventor 周和康林静忠杨彦利刘金铭
Owner INNOCOM TECH (SHENZHEN) CO LTD
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