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Data driver using gamma selection signal, and plane display device and driving method
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A technology for data drivers and flat-panel displays, applied to static indicators, instruments, etc., can solve the problems of increasing the circuit design complexity and cost of timing controllers and data drivers
Active Publication Date: 2010-06-02
AU OPTRONICS CORP
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[0004] However, compared with the liquid crystal display in which the timing controller transmits a piece of data corresponding to one pixel to the data driver within one frame time, the timing controller and the clock signal of the data driver used in the above-mentioned liquid crystal display for improving the viewing angle The frequency must be doubled to complete the transmission or reception of the data to be transmitted
In this way, the complexity of the circuit design of the timing controller and the data driver will be increased, and the required cost will be increased
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no. 1 example
[0035] Please refer to figure 1 , which is a schematic diagram of a flat panel display using a dot inversion driving method according to a first embodiment of the present invention. The flat panel display 100 includes a flat display panel 102 , a timing controller 104 , a data driver 106 and a scan driver 108 . The flat display panel 102 includes a pixel array 110 composed of n rows and m columns of pixels P, a plurality of scan lines S1-Sn, and a plurality of data lines L1-L2m, where n and m are positive integers.
[0036] A pixel P(1,1) and a pixel P(1,2) are taken as an example for illustration. The pixel P(1,1) includes a left sub-pixel PL(1,1) and a right sub-pixel PR(1,1). The pixel P(1,2) includes a left sub-pixel PL(1,2) and a right sub-pixel PR(1,2). The scan line S1 is used to control the pixel P(1,1) and the pixel P(1,2). The data lines L1˜L4 are electrically connected to the left sub-pixel PL(1,1), the right sub-pixel PR(1,1), the right sub-pixel PR(1,2) and th...
no. 2 example
[0060] Please refer to Figure 7 , which is a schematic diagram of a flat panel display 700 using a 2-line inversion driving method according to a second embodiment of the present invention. The flat panel display 700 includes a flat display panel 702 , a timing controller 704 , a data driver 706 and a scan driver 708 . The flat display panel 702 includes a pixel array 710 composed of n rows and m columns of pixels P, a plurality of scan lines S1'-Sn', and a plurality of data lines L1'-L2m'.
[0061] Different from the first embodiment, in the pixel array 710, the sub-pixels in two adjacent rows are connected to the data lines in the same way, and the gamma selection signal Gamma_SL' changes state only after two line periods. In this way, the driving effect of dual column inversion can be achieved.
[0062] Based on the pixels P'(1,1), P'(1,2), P'(2,1), P'(2,2), P'(3,1), P' of the pixel array 710 (3,2), P'(4,1) and P'(4,2) are illustrated as examples. Each pixel includes a...
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Abstract
The invention relates to a data driver of using a gamma selection signal and a flat panel display and a driving method thereof. A first left sub-pixel, a first right sub-pixel, a second right pixel and a second left sub-pixel are electrically connected with a first data line, a second data line, a third data line and a fourth data line respectively. The data driver comprises gray scale voltage generating units from first to fourth for respectively outputting a first group of positive gray scale voltage, a second group of negative gray scale voltage, a second group of positive gray scale voltage and a first group of negative gray scale voltage. The data driver drives the sub-pixels according to the first group of positive gray scale voltage, the second group of negative gray scale voltage,the second group of positive gray scale voltage and the first group of negative gray scale voltage under the control of a polarity inversion signal and the gamma selection signal.
Description
technical field [0001] The present invention relates to a data driver, a flat display panel and a driving method, in particular to a data driver using a gamma selection signal and a flat display panel using the data driver and a driving method. Background technique [0002] Due to the advantages of thin, light, small, low radiation, and space-saving, flat-panel displays have gradually become the mainstream of the display market in recent years. Increasing the viewing angle is one of the main factors affecting the image quality of a flat panel display. [0003] For liquid crystal displays, the traditional driving method is to allow a pixel to receive two different pixel voltages sequentially within one frame time, so that the liquid crystal molecules are arranged in different directions, so as to increase the viewing angle of the liquid crystal display. One of the ways to achieve the above effect is: within one frame time, the timing controller sequentially transmits two pie...
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