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Pixel voltage compensated display panel driving device and method

A technology for display panels and driving devices, applied in static indicators, instruments, etc., can solve problems such as no solution, pixel voltage error, etc.

Active Publication Date: 2019-03-05
HIMAX TECH LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The pixel voltage will be affected by the coupling capacitance of adjacent pixels, making the voltage error of the pixel more serious
For the voltage error of the pixel caused by the coupling capacitance between adjacent pixels, there is no suitable solution in the prior art

Method used

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  • Pixel voltage compensated display panel driving device and method
  • Pixel voltage compensated display panel driving device and method
  • Pixel voltage compensated display panel driving device and method

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Embodiment Construction

[0027] As used throughout this disclosure, including the claims, the term "coupled (or connected)" may refer to any means of connection, direct or indirect. For example, if it is described that a first device is coupled (or connected) to a second device, it should be interpreted that the first device can be directly connected to the second device, or the first device can be connected to the second device through other devices or certain A connection means indirectly connected to the second device. In addition, wherever possible, elements / components / steps using the same reference numerals in the drawings and embodiments represent the same or similar parts. Elements / components / steps using the same symbols or using the same terms in different embodiments can refer to related descriptions.

[0028] figure 1 It is a schematic diagram of a circuit block of a display panel driving device 100 according to an embodiment of the present invention. The display panel driving device 100 ...

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Abstract

The invention relates a display panel driving device and method. The display panel driving device comprises a sequence control circuit, a memory, a compensation circuit and a data driving circuit. Thememory provides at last one piece of coupling capacitance information between a present pixel and at least one neighbor pixel in a display panel. The coupling capacitance information is used, so thatthe compensation circuit compensates present pixel data and obtains compensated pixel data, and further voltage drift, caused by the coupling voltage of the adjacent pixel, of the present pixel is compensated. The data driving circuit drives the present pixel according to the compensated pixel data.

Description

technical field [0001] The present invention relates to a display device, and in particular to a display panel driving device and method for compensating pixel voltage. Background technique [0002] When liquid crystal on silicon (hereinafter referred to as LCoS) is used for general display purposes, in the displayed picture, the uniformity of the same gray scale is more important, and the voltage error of the pixel can be tolerated. When LCoS is used for phase modulation applications, the voltage error of the pixel is more important, because the voltage error of the pixel will greatly affect the image quality. In any case, because the coupling capacitance between adjacent pixels must exist. The coupling capacitance will cause voltage error of the pixel. When the distance / gap between adjacent pixels is smaller, the coupling capacitance between adjacent pixels is larger. The pixel voltage will be affected by the coupling capacitance of adjacent pixels, making the voltage e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/36
CPCG09G3/36
Inventor 曾奕龙邱明正
Owner HIMAX TECH LTD