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Power saving circuit for display

A display and circuit technology, which is applied in the field of power-saving circuits of displays, can solve problems such as cost increase, excess occupation, and price competitive advantages, and achieve the effects of easy design and cost reduction

Inactive Publication Date: 2006-04-19
NANJING LG TONGCHUANG COLOR DISPLAYS SYST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] However, since a plurality of power-saving mode drive units applying the power-saving circuit of the display of the prior art need to input power-saving signals separately to perform power-saving operations, in order to form such a power-saving mode drive unit, it is necessary to add a lot of accessories.
Therefore, constituting such a power-saving circuit has the problems of increasing the cost and occupying a lot of PCB (Printed Circuit Board: printed circuit board) space.
This is contrary to today's trend of demanding cost reduction, and there is a problem of reducing the price competitive advantage

Method used

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Embodiment Construction

[0026] Embodiments of the power saving circuit of the display of the present invention will be described in detail below with reference to the accompanying drawings.

[0027] Such as figure 2 As shown, the power-saving circuit of the display includes: a bridge rectifier diode BD11 that rectifies the input AC power (AC power) wave; the power rectified in the bridge rectifier diode BD11 is induced according to the internal coil ratio, and the power is supplied by the secondary circuit The transformer 10 of the power transformer 10; the power control unit 20 that controls the switch of the power transformer 10; the first and second rectification / filtering units 30 and 40 that rectify and filter the secondary circuit power of the power transformer 10; according to the power saving mode signal DPM1, to The first power-saving mode drive unit 50 that controls the output of the first DC power supply Vcc1 rectified and filtered by the first rectification / filtering unit 30; The second...

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PUM

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Abstract

The power saving circuit for display includes following parts: rectification part for rectifying input AC power source; secondary loop of transformer for supplying power source for the rectification part according to winding ratio; first and second rectifying and filtering parts for rectifying and filtering power source at secondary loop; driving part in first power saving mode controls Vcc1 output of first DC power source rectified and filtered by the first rectifying and filtering part based on signal DPM1 in first power saving mode; driving part in second power saving mode controls Vcc2 output of second DC power source rectified and filtered by the second rectifying and filtering part based on driven by the driving part in first power saving mode said above. As one driving part in power saving mode is acted, the other driving parts in power saving mode are operated automatically. Advantages are: minimum fittings of circuit, lowered cost and convenience for design.

Description

technical field [0001] The present invention relates to a power-saving circuit for a display, and more specifically, to a power-saving circuit for a display that can reduce costs and improve design convenience through an efficient power-saving circuit structure. Background technique [0002] Generally, in order to reduce the unnecessary power consumption of the display, if the user does not use the personal computer for a certain period of time, the system microcomputer of the display controls the DPM (Display Power Management: Display Power Management) mode of the power saving mode (Power Save Mode). The input voltage of the secondary circuit of the transformer (Power Trans) becomes smaller (Down). [0003] Nowadays, there is an increasing demand for power saving such as this, and not only cost reduction but also reduction of IC's own consumption voltage is required. [0004] Such as figure 1 As shown, the power-saving circuit of the display using the prior art includes: ...

Claims

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Application Information

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IPC IPC(8): G06F1/32
Inventor 李起炯张源基
Owner NANJING LG TONGCHUANG COLOR DISPLAYS SYST CO LTD
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