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Column inverting method, liquid crystal display panel and drive module

A liquid crystal display panel, column inversion technology, applied to static indicators, instruments, etc., can solve problems such as screen flickering

Inactive Publication Date: 2006-05-17
AU OPTRONICS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But frame inversion may cause flickering

Method used

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  • Column inverting method, liquid crystal display panel and drive module
  • Column inverting method, liquid crystal display panel and drive module
  • Column inverting method, liquid crystal display panel and drive module

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Embodiment Construction

[0029]In a conventional LCD panel, multiple gate lines are used to provide gate line signals to respectively drive multiple pixel rows, and multiple data lines are used to provide data signals to multiple pixel rows. The gate lines and the data lines are arranged on the lower substrate of the LCD panel. In a transmissive LCD panel, a pixel generally includes a set of pixel electrodes, and each pixel electrode corresponds to a color sub-pixel. Each color sub-pixel usually includes one or more charging storage capacitors disposed on the lower substrate. Therefore, a large number of common lines need to be disposed on the lower substrate to provide a common voltage to the charge storage capacitors. In order to isolate the gate lines, the data lines and the common lines, one or more passivation layers are disposed on the lower substrate and stacked layer by layer. And the protective layer is also used to provide a charge storage capacitor. Due to the complex circuit structure o...

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Abstract

The present invention uses a voltage inversion waveform to change the common voltage level in half the frame time to achieve a column inversion effect. Therefore, the common voltage inversion frequency is equal to the frame update frequency. When providing a common voltage to the LCD panel to drive the pixels, the voltage inversion that changes between polarities can fully or partially charge the parasitic capacitance in each pixel. Therefore, reducing the common voltage inversion frequency reduces the power consumption related to the parasitic capacitance. In addition, in a driving method of the present invention, all odd-numbered columns are continuously driven in half of the frame time, and all even-numbered columns are continuously driven in the other half of the frame time.

Description

technical field [0001] The invention relates to an active matrix liquid crystal display (AMLCD) device; in particular, it relates to a driving method for a thin film transistor liquid crystal display (TFT-LCD) device. Background technique [0002] Thin film transistor liquid crystal displays (TFT-LCDs) are well known. A thin film transistor liquid crystal display panel includes an upper substrate, a lower substrate and a liquid crystal layer disposed in the two substrates. The upper substrate includes a transparent upper electrode made of indium tin-oxide (ITO), and a color filter (color filter) layer to provide colors in the displayed image, wherein the upper electrode is coupled to connected to a common voltage Vcom. The lower substrate includes a lower electrode layer for defining an array of pixels arranged in rows and columns as shown in FIG. 1 . Generally, each pixel has a pixel electrode, and the pixel electrode is controlled by a switching device such as a thin fi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/36G02F1/133G09G3/20
CPCG09G3/3614G09G3/3655G09G2310/0224G09G2320/0204
Inventor 杨健生
Owner AU OPTRONICS CORP