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Source driver and method for determining pixel voltage polarity

A source driver, pixel voltage technology, applied in the direction of instruments, static indicators, etc., can solve the problem that the power consumption of the source driver cannot be reduced, and achieve the effect of reducing the impact of the common voltage

Active Publication Date: 2017-04-12
NOVATEK MICROELECTRONICS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, traditional charge sharing technology is generally applied to source drivers that generate pixel voltages using dot inversion (dot inversion) driving methods. technology may not reduce source driver power consumption

Method used

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  • Source driver and method for determining pixel voltage polarity
  • Source driver and method for determining pixel voltage polarity
  • Source driver and method for determining pixel voltage polarity

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Experimental program
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Embodiment Construction

[0058] Figure 1A It is a system diagram of a source driver according to an embodiment of the present invention. Please refer to Figure 1A , in this embodiment, the source driver 100 includes a data temporary storage unit 110, a plurality of polarity determination units (such as 120_1, 120_2) and a plurality of data channels (such as 130_1~130_4), wherein these data channels (such as 130_1~ 130_4) are divided into multiple data groups (such as G11, G12). In this embodiment, each data group (such as G11, G12) is taken to include two data channels (such as 130_1~130_4) as an example, but in other embodiments, each data group (such as G11, G12) may include three data channels (such as 130_1-130_4) or more data channels, which is not limited in this embodiment of the present invention.

[0059] The data temporary storage unit 110 receives an image data signal SDI, and arranges and arranges the data transmitted by the image data signal SDI to provide a plurality of display data (...

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Abstract

The invention provides a source driver and a pixel voltage polarity determination method thereof. The source driver includes a data temporary storage unit, a plurality of data groups and a plurality of polarity determination units. The data temporary storage unit receives an image data signal and provides a plurality of display data. Each data group includes at least two data channels. The data channels are coupled with the data temporary storage unit so as to receive corresponding display data and provide a plurality of pixel voltages. The polarity determination units are respectively coupled with data channels corresponding to different data groups and each polarity determination unit determines whether to invert the polarity of the pixel voltages provided by part of the coupled data channels according to the display data received by the coupled data channels and a plurality of corresponding previous display data.

Description

technical field [0001] The present invention relates to a driving device of a display, and in particular to a source driver and a method for determining the polarity of a pixel voltage thereof. Background technique [0002] In recent years, liquid crystal displays have gradually become the mainstream of the market due to their characteristics of low power consumption, no radiation pollution and high space utilization. In the driving circuit of the display, the source driver is an important component, which is used to convert the digital image data signal into the pixel voltage and provide the pixel voltage to the turned-on pixel, thereby storing the pixel voltage in the pixel electrode and common In the storage capacitor formed by the electrodes. [0003] Since the pixel voltage will change corresponding to the gray scale to be displayed (that is, the brightness), and the change of the voltage level will be conducted to the common electrode through the capacitive coupling e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/36G09G3/20
Inventor 洪邦桢程智修萧鸿晟
Owner NOVATEK MICROELECTRONICS CORP