Corner cutting circuit in LCD driving system

A driving circuit and driving system technology, applied in the field of LCD driving, can solve problems such as temperature rise of the discharge module, burning of the discharge module, high temperature generation, etc., and achieve the effect of releasing control board space, avoiding crowded arrangement, and avoiding high temperature

Active Publication Date: 2013-09-11
TCL CHINA STAR OPTOELECTRONICS TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, when the scanning line driving circuit discharges, since all the current flows through the discharge module, the discharge module needs to bear a large amount of charge, causing the temperature of the discharge module to rise gradually, resulting in high temperature, or causing the discharge module to burn out

Method used

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  • Corner cutting circuit in LCD driving system
  • Corner cutting circuit in LCD driving system
  • Corner cutting circuit in LCD driving system

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Embodiment Construction

[0036] It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0037] Such as figure 1 As shown, the corner cutting circuit 10 in the LCD driving system mentioned in the embodiment of the present invention is connected to a plurality of scanning line driving circuits 30, including:

[0038] The charging module 11 is integrated on the control board 20, accepts the input of the DC driving voltage, and outputs the turn-on voltage to charge the scanning line driving circuit 30;

[0039] A plurality of discharge modules 12 are respectively integrated on each scanning line driving circuit 30 to control the corresponding scanning line driving circuit 30 to discharge.

[0040] In this embodiment, there may be multiple discharge modules 12 that control the discharge of the scan line drive circuit 30. This embodiment only takes one discharge module 12 as an example, and each discharge mod...

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Abstract

A shaping circuit (10) in an LCD driver system, connected to multiple scanline driver circuits (30), comprising: a charging module (11) integrated on a control board (20) for receiving an input of a direct current driving voltage and for outputting a turn-on voltage to charge the scanline driver circuits (30), and multiple discharging modules (12) respectively integrated on each of the scanline driver circuits (30) for controlling the corresponding scanline driver circuits (30) to discharge. The present invention distributes the discharging modules (12) respectively onto each of the scanline driver circuits (30), thus reducing the electric charge of load discharge loaded on the discharging modules (12), and preventing the occurrence of high temperature. As each discharging module (12) is provided with a separate spatial position, component crowding is avoided, and space on the control board is not occupied, thus further facilitating temperature reduction, freeing up space on the control board, and reducing the size of same.

Description

technical field [0001] The invention relates to the field of LCD driving, in particular to a corner cutting circuit in the LCD driving system. Background technique [0002] In the LCD driving architecture, in order to reduce the feedback voltage and linear variation effect, it is necessary to add a corner cutting circuit to the LCD driving system, and adjust the slope of the driving voltage waveform through the corner cutting circuit, that is, generate corner cutting. At present, the corner cutting circuit has been widely used in every model. Usually, each component of the corner cutting circuit is installed on the control board of the LCD drive system, and the MOS tube is used as the switch component to control the turn-on voltage to charge the scanning line drive circuit. At the same time, the discharge module is connected in parallel to the output terminal of the discharge voltage of the scan line drive circuit. When the control signal controls the MOS transistor to be tu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/36
CPCG02F1/133G09G3/3674G09G2310/0218G09G3/36
Inventor 林柏伸谭小平符俭泳
Owner TCL CHINA STAR OPTOELECTRONICS TECH CO LTD
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