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Wide-angle liquid crystal display and its driving method

A technology of a liquid crystal display and a driving method, which is applied in the field of wide viewing angle liquid crystal display and its driving, can solve the problems such as failure to solve the problem of color shift of the liquid crystal display

Inactive Publication Date: 2008-08-13
AU OPTRONICS CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] In summary, the traditional driving method purely through time or space mixing cannot solve the problem of color shift caused by LCDs at large viewing angles.

Method used

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Embodiment Construction

[0047] Figure 3A A block diagram of the driving system of the liquid crystal display is shown, and only the parts relevant to the present invention are shown here. The external digital video signal (video signal) 30 is input to the driver (driver) 32 to generate an analog video signal to drive the LCD panel (LCD panel) after the video processor (videoprocessor) 31 performs gamma mapping (gamma mapping). )33 to display the image.

[0048] Figure 3B show Figure 3A A schematic diagram of the gamma mapping of the video processor 31 . The external video signal 30 is processed by two different mappings of gamma map 1 (310) and gamma map 2 (320), and then mixed by a selector (selector) 330 to obtain an output signal 340, for inputting to the driver 32. According to the embodiment of the present invention, signal mixing methods can be divided into three types: time mixing (dithering in time-domain), space mixing (dithering in space-domain), time and space mixing (dithering in ...

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Abstract

A wide-angle liquid crystal display is prepared as setting the first pixel region and the second pixel region on each sub pixel, sequencing them at two adjacent periods or adjacent pixel and applying multiple driving voltage to separately drive the first pixel region and the second pixel region for improving wide-angle color cast phenomenon of liquid crystal display.

Description

technical field [0001] The invention relates to a driving method of a liquid crystal display, in particular to a liquid crystal display with a wide viewing angle and a driving method thereof. Background technique [0002] Due to the different viewing angles of users, traditional liquid crystal displays (LCDs) will have different brightness and contrast ratios, and even grayscale inversions will occur at larger viewing angles. In order to improve this phenomenon, there are those who adopt multi-domain vertical alignment (MVA) technology, which adopts four azimuthal angles (azimuthal angle) of 45°, 135°, 225°, and 315°. To solve the traditional large viewing angle grayscale inversion phenomenon. figure 1 Displays the gamma curve of a traditional multi-domain vertical alignment (MVA) liquid crystal display, where the horizontal axis represents the normalized voltage value of the driving signal, and the vertical axis represents the normalized luminance The dotted line in the f...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/36G09G3/20G02F1/133
Inventor 苏亭伟黄乙白苏振嘉曹正翰
Owner AU OPTRONICS CORP
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