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Source driver and liquid crystal display with source driver

A source driver and positive electrode technology, applied in static indicators, instruments, etc., can solve the problems of high temperature of the source driver, affecting the display effect of TFT-LCD, high power consumption of the source driver, etc., and achieve the effect of reducing power consumption

Active Publication Date: 2012-12-19
HISENSE VISUAL TECH CO LTD
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Problems solved by technology

In practical applications, the power consumption of the source driver is relatively high. After working for a long time, the temperature of the source driver is high, which affects the display effect of TFT-LCD.
[0004] Aiming at the problem of relatively high power consumption of the source driver in the related art, no effective solution has been proposed so far

Method used

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  • Source driver and liquid crystal display with source driver
  • Source driver and liquid crystal display with source driver
  • Source driver and liquid crystal display with source driver

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Embodiment Construction

[0019] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0020] Before introducing specific embodiments of the present invention, the working principles of the gate driver and the source driver are first described: the waveform sent by the gate driver turns on the TFTs of each row in sequence, and the source driver simultaneously displays a whole row The dots are charged to their respective required voltages and display different gray scales. When this row is fully charged, the gate driver turns off the TFTs of this row, and then the gate driver of the next row turns on the TFTs of this row, and the source driver charges and discharges the display points of the next row. Going on in this order, when the display point of the last line is charged, it ...

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Abstract

The invention discloses a source driver and a liquid crystal display (LCD) with the source driver. The source driver comprises an operational amplifier, wherein the operational amplifier is arranged at an output channel of the source driver, and a power supply voltage of the operational amplifier is less than an analog voltage of the source driver. The power consumption of the source driver can be reduced by using the invention.

Description

technical field [0001] The invention relates to the field of liquid crystal displays, in particular to a source driver and a liquid crystal display with the source driver. Background technique [0002] In the field of Thin Film Transistor-Liquid Crystal Display (TFT-LCD for short), the source driver in the driving circuit is the key device of TFT-LCD, responsible for starting the thin film transistor and controlling the change of liquid crystal molecule arrangement. . The complexity of the internal integrated modules of the source driver and the size of the external output load largely determine the temperature and power consumption of the source driver, so the design of the source driver has become an important issue in the design of LCD panels. [0003] The output channel of the source driver is provided with an operational amplifier as a buffer for outputting signals, figure 1 It is a schematic diagram of the GAMMA Operational Amplifier (GAMMA Operational Amplifier, ref...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/36
Inventor 田清华房好强张钰枫赵彩霞
Owner HISENSE VISUAL TECH CO LTD
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