Abstract: An exemplary liquid crystal display (LCD) panel includes scan lines, data lines, a scan driver connected to the scan lines, a data driver connected to the data lines, a controller connected to the scan driver and the data driver, and pixels formed by the scan lines and the data lines. The LCD panel is divided into five detecting regions, and the first detecting region is in a center of the LCD panel, and others surround the center portion of the LCD panel. Each detecting region includes a photo sensor. The controller is used to control the five detecting regions to have substantially the same flicker level.

Abstract: An exemplary data driver chip (23) includes a multiplexer (31); a first digital/analog (D/A) converter (32); and a second digital/analog (D/A) converter (33). The multiplexer receives a multiplex data stream and decomposes the multiplex data stream to a first signal and a second signal, and respectively sends the first and second signals to the first and the second D/A converters. The first D/A converter converts the first signal to an analog gamma voltage to the second D/A converter, and the second D/A converter converts the second signal to analog video signal according to the analog gamma voltage.

Abstract: An exemplary data driver chip (23) includes a multiplexer (31); a first digital/analog (D/A) converter (32); and a second digital/analog (D/A) converter (33). The multiplexer receives a multiplex data stream and decomposes the multiplex data stream to a first signal and a second signal, and respectively sends the first and second signals to the first and the second D/A converters. The first D/A converter converts the first signal to an analog gamma voltage to the second D/A converter, and the second D/A converter converts the second signal to analog video signal according to the analog gamma voltage.

Abstract: An exemplary liquid crystal display (LCD) panel includes scan lines, data lines, a scan driver connected to the scan lines, a data driver connected to the data lines, a controller connected to the scan driver and the data driver, and pixels formed by the scan lines and the data lines. The LCD panel is divided into five detecting regions, and the first detecting region is in a center of the LCD panel, and others surround the center portion of the LCD panel. Each detecting region includes a photo sensor. The controller is used to control the five detecting regions to have substantially the same flicker level.

Abstract: A driving circuit of an active matrix liquid crystal display (LCD) (600) having an LCD panel includes a plurality of gate lines (601) that are parallel to each other; a plurality of data lines (602) that are parallel to each other and across the gate lines; a gate driving circuit (610) connected to the gate lines; a data driving circuit (620) connected to the data lines; a timing control circuit (630) configured for driving the data driving circuit and the gate driving circuit; and an optical sensor (690) connected to the timing control circuit. The optical sensor generates a plurality of inspecting signals according to a flickering intensity of the LCD panel and provides the inspecting signals to the timing control circuit. The timing control circuit prepares a plurality of compensating gradation voltages according to the inspecting signals and providing the compensating gradation voltages to the data driving circuit.