Patent ID: 8847864
Filing Date: 2014-09-30
Classification: G09G

Abstract:
1. A color flat display panel, comprising: a plurality of pixels each comprising a first color sub-pixel, a second color sub-pixel and a third color sub-pixel, wherein the first color is a red (R) color, the second color is a green (G) color and the third color is a blue (B) color; a plurality of scanning lines, each of the scanning lines being electrically connected with a corresponding row of sub-pixels in a row direction; and a plurality of data lines, each of the data lines being electrically connected with a corresponding column of sub-pixels in a column direction; wherein the first color sub-pixel, the second color sub-pixel and the third color sub-pixel of each of the pixels are arranged in the column direction so that the corresponding row of sub-pixels electrically connected with each of the scanning lines are sub-pixels of a same color; and the color flat display panel uses a Gamma circuit to provide Gamma reference voltages for different colors, and the Gamma reference voltages correspond to the colors of the corresponding rows of sub-pixels electrically connected with the scanning lines; wherein the Gamma circuit comprises: an interface control module; a storage module comprising a first storage unit, a second storage unit and a third storage unit, wherein the storage module is configured to receive a Gamma voltage conforming to a first color Gamma curve, a Gamma voltage conforming to a second color Gamma curve and a Gamma voltage conforming to a third color Gamma curve for the color flat display panel via the interface control module, and store the Gamma voltage conforming to the first color Gamma curve, the Gamma voltage conforming to the second color Gamma curve and the Gamma voltage conforming to the third color Gamma curve into the first storage unit, the second storage unit and the third storage unit of the storage module respectively; a selection module, being configured to select one of the first storage unit, the second storage unit and the third storage unit according to a timing sequence so that the Gamma voltage conforming to the first color Gamma curve, the Gamma voltage conforming to the second color Gamma curve and the Gamma voltage conforming to the third color Gamma curve are outputted according to the timing sequence; a digital-to-analog conversion (DAC) register, being configured to temporarily store the Gamma voltage conforming to the first color Gamma curve, the Gamma voltage conforming to the second color Gamma curve and the Gamma voltage conforming to the third color Gamma curve outputted by the storage module; a plurality of DAC modules, being electrically connected to the DAC register respectively, wherein each of the DAC modules is configured to receive a Gamma voltage of one color and convert the Gamma voltage of the color from a digital signal into an analog signal for use as the Gamma reference voltage of the corresponding color; and a plurality of buffers, each of which is electrically connected with a corresponding one of the DAC modules to output the Gamma reference voltage of the corresponding color; wherein the number of the DAC modules and the number of the buffers correspond to the number of the scanning lines of the color flat display panel, and the Gamma reference voltage of the corresponding color outputted by each of the buffers corresponds to the color of the corresponding row of sub-pixels electrically connected with a corresponding one of the scanning lines.