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Power supply control circuit and LCD device adopting same

A technology of circuit and power supply, applied in the field of liquid crystal display devices, to avoid potential danger and waste of electric energy

Inactive Publication Date: 2008-08-06
INNOCOM TECH SHENZHEN +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In order to solve the problem of power consumption in the prior art power control circuit after it is shut down, it is necessary to provide a power control circuit that realizes zero power consumption when the electronic product is shut down

Method used

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  • Power supply control circuit and LCD device adopting same
  • Power supply control circuit and LCD device adopting same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0016] see figure 1 , is a circuit diagram of a preferred embodiment of the power supply control circuit of the present invention. The power control circuit 200 includes a first port 201, a second port 202, a third port 203, a DC power supply (not marked), a touch button 250, an intelligent control module 270 and an electromagnetic switch 280 . Wherein, the DC stabilized power supply includes a transformer 210 , a rectifier circuit 220 , a filter circuit 230 , and a stabilized voltage circuit 240 .

[0017] The first port 201 is connected to the live line (Live Line) of the mains power through the power line, and the second port 202 is connected to the neutral line (Neutral Line) of the mains power through the power line. The second port 202 and the third port 203 are connected to the load of the power control circuit 200 .

[0018] The transformer 210 includes a primary coil 211 and a secondary coil 212 . One end of the primary coil 211 is connected to the first port 201 ...

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PUM

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Abstract

The present invention provides an electrical source control circuit comprising a first port, a second port, a third port, a direct current stabilized electrical source comprising two input ends and an output end, a controllable switch comprising a control element and a switch element, an intelligent control module and a button; the first port and the second port are connected with the live wire and the zero line of commercial power respectively; the second port and the third port are connected with a load; one input end of the direct current stabilized electrical power is connected with the first port, the other end is connected with the second port via the button, meanwhile the other end is connected with the third port via the switch element, the output end of the direct current stabilized electrical source is connected with an intelligent control module; the control element is connected between the intelligent control module and the output end. Meanwhile the invention provides a liquid crystal display device adopting the electric source control circuit.

Description

technical field [0001] The invention relates to a power control circuit and a liquid crystal display device using the power control circuit. Background technique [0002] Usually, people do not plug or unplug the power cord when shutting down the consumer electronic product, but only habitually press the power switch button of the electronic product. For example, when people shut down the liquid crystal display device, they usually implement it by manually pressing a power button provided on the control interface of the liquid crystal display device. [0003] Use the power switch button to shut down, is to apply a level to an input / output (I / O) port of the internal control chip of the electronic product through the power switch button, and the control chip outputs a control signal under the action of the level to control The load of this electronic product is disconnected. [0004] The working principle of the power control circuit when the electronic product in the prior ...

Claims

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Application Information

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IPC IPC(8): G09G3/36G02F1/133
Inventor 郑接见周通鲁建辉肖华乐昆
Owner INNOCOM TECH SHENZHEN
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