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Display apparatus and pixel voltage driving method thereof

a technology of display apparatus and driving method, which is applied in the direction of electric digital data processing, instruments, computing, etc., can solve the problem of higher charge/discharge driving power consumption of switching voltage at each data line, and achieve the effect of reducing the data line driving power consumption of the display apparatus and reducing the driving power consumption of the data lin

Inactive Publication Date: 2013-02-28
AU OPTRONICS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention provides a method for reducing the power consumption of a display apparatus by driving the voltage of pixels in a structured way. This method involves calculating the difference between two pixel voltages and using it to generate a comparison result. Based on this result, the method determines which voltage to drive into a specific pixel. This method can be applied to any display apparatus with adjacent rows of pixels. Ultimately, this method decreases the power consumed by the display apparatus and improves its overall performance.

Problems solved by technology

However, as dimensions of the flat panel display increase, both trace resistance and parasitic capacitor of each data line increase, such that the switching of voltage at each data line incurs higher charge / discharge driving power consumption.

Method used

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  • Display apparatus and pixel voltage driving method thereof
  • Display apparatus and pixel voltage driving method thereof
  • Display apparatus and pixel voltage driving method thereof

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Embodiment Construction

[0016]Hereinafter, some embodiments of the present invention will be described in detail with reference to the accompanying drawings. Here, it is to be noted that the present invention is not limited thereto. Furthermore, the step serial numbers regarding the pixel voltage driving method are not meant thereto limit the operating sequence, and any rearrangement of the operating sequence for achieving same functionality is still within the spirit and scope of the invention.

[0017]FIG. 1 is a schematic diagram showing the structure of a display apparatus having adaptation-mode data line voltage driving mechanism in accordance with a preferred embodiment. As shown in FIG. 1, the display apparatus 100 comprises a data driver 110, a scan driver 120, a plurality of data lines 150 electrically connected to the data driver 110, a plurality of scan lines 160 electrically connected to the scan driver 120, and a pixel array 170. The data driver 110 is utilized for converting input image data Sda...

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Abstract

A display apparatus includes a pixel array, a data line and a data driver. The pixel array has adjacent first and second pixels disposed in different rows. The data line transmits first and second pixel voltages to be written into the first and second pixels respectively. The first and second pixel voltages are employed to illustrate a same frame. The data driver is utilized for generating the first and second pixel voltages furnished to the data line based on input image data. The data driver includes a voltage analysis unit and a voltage setting unit. The voltage analysis unit is used for calculating a voltage difference between the first and second pixel voltages, and for comparing the voltage difference with a preset value so as to generate a control signal. The voltage setting unit is utilized for setting the voltage of the data line according to the control signal.

Description

BACKGROUND OF THE INVENTION[0001]1. Technical Field[0002]The disclosure relates to a display apparatus and driving method thereof, and more particularly, to a display apparatus having adaptation-mode data line voltage driving mechanism and pixel voltage driving method thereof.[0003]2. Description of the Related Art[0004]Flat panel displays (FPDs) have advantages of a thin profile, low power consumption, and low radiation, and are broadly adopted for application in a variety of electronic appliances such as media players, mobile phones, personal digital assistants (PDAs), and computer monitors, etc. In general, the structure of a flat panel display includes a pixel array, a data driver, a scan driver, a plurality of data lines, and a plurality of scan lines. The data driver is utilized for providing plural data signals furnished to the pixel array via the data lines. The scan driver is utilized for providing plural scan signals furnished to the pixel array via the scan lines. The pix...

Claims

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Application Information

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IPC IPC(8): G09G5/00
CPCG09G3/20G09G3/3685G09G2330/021G09G2310/0275G09G2310/0248G09G3/2018
Inventor LI, HUAN-HSINCHEN, YU-JENPENG, DE-ZHANGTSAO, CHI-FU
Owner AU OPTRONICS CORP