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Driving method of liquid crystal display

A technology of liquid crystal display and driving method, applied in the field of liquid crystal display driving, capable of solving problems such as drop

Inactive Publication Date: 2007-08-08
AU OPTRONICS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

And when the human eye squints at the liquid crystal display at an oblique angle, the relationship between the transmittance and the voltage is represented by a dotted line 102, although the transmittance also changes as the applied voltage increases, but in the area 100, the change of the transmittance It does not increase with the increase of the applied voltage, but decreases, which is the main cause of color shift

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  • Driving method of liquid crystal display
  • Driving method of liquid crystal display
  • Driving method of liquid crystal display

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Embodiment Construction

[0047] In order to make the above-mentioned and other purposes, features, and advantages of the present invention more obvious and comprehensible, they are described as follows in conjunction with the accompanying drawings:

[0048] In order to solve the color shift phenomenon, the present invention forms two pixels in a unit pixel, and uses all common electrode driving voltages of each sub-pixel to modulate the sub-pixel voltage, so that a unit pixel has two different sub-pixel voltages. In addition, please refer to FIG. 3A which shows a schematic diagram of a liquid crystal panel. In addition to using the common electrode to modulate the pixel voltage of each sub-pixel, the present invention also partitions the scanning lines of a liquid crystal panel, for example, divides them into n areas, so as to provide time-sharing for the common electrodes in different scanning line intervals. driving voltage. In other words, the pixels located in the same area are driven by the comm...

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Abstract

The invention provides a method to driver LCD. The driver method is used to drive the pixel unit with the first and second pixels. The method includes the following steps: write a gray signal into a first pixel to form the first pixel electrode voltage, and write a gray signal into a second pixel to form the second pixel electrode voltage; when the scanning signal finishes scanning the scan lines in a specific area, it generates a second signal to the second common electrode to change the second pixel electrode voltage. The pixel unit in the invention includes two pixels, and each pixel has their own transistor, liquid crystal and storage capacitance capacitors, and makes two pixels with different pixel voltages. The two different pixel voltages can form different optical properties and compensate and average each other. It could ease the color pixel phenomenon in the single pixel unit.

Description

technical field [0001] The present invention relates to a driving method, in particular to a driving method of a liquid crystal display. Background technique [0002] Liquid crystal displays have been widely used in various electronic products, such as pip watches or calculators. In order to provide a wide viewing angle, Fujitsu proposed in 1997 a pixel division vertical alignment (Multi-Domain Vertical Alignment, MVA) technology. MVA technology can obtain a 160-degree viewing angle, and it can also provide excellent performance with high contrast and fast response. However, the MVA technology has a great disadvantage, that is, when squinting, it will produce a color shift (color shift) to the skin color of people, especially the skin color of Asians. [0003] Fig. 1 shows the relationship between the grayscale voltage and the transmittance of a liquid crystal molecule using MVA technology, wherein the horizontal axis represents the grayscale (gray) voltage of the liquid c...

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Application Information

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IPC IPC(8): G09G3/36G09G3/20G02F1/133
Inventor 黄雪瑛赖明升江明峰
Owner AU OPTRONICS CORP