Patent ID: 9153185
Filing Date: 2015-10-06
Classification: G09G

Abstract:
1. A field sequential liquid crystal display device, comprising: a circuit unit for producing R, G, and B reference voltages and scanning signal voltages using R, G, and B data and control signals transmitted from an external driving system; a liquid crystal display panel for changing alignment direction of liquid crystal molecules in accordance with R, G, and B image voltages and the scanning signal voltages, wherein the R, G, and B image voltages are supplied to the liquid crystal panel during R, G, and B sub-frames, respectively, of each frame; and a backlight device for emitting light to the liquid crystal display panel, wherein the circuit unit includes: a switch for selecting one of the R reference voltages in a first sub-frame after the plurality of gamma generating units outputs the R reference voltages, one of the G reference voltages in a second sub-frame after the plurality of gamma generating units outputs the G reference voltages, and one of the B reference voltages in a third sub-frame after the plurality of gamma generating units outputs the B reference voltages, wherein the switch selects from any of the generated R, G, and B reference voltages and supplies the selected reference voltages directly to a data driver during the R, G, and B sub-frames respectively; the data driver for receiving the data control signal and the R, G, and B data from the timing controller and the selected R, G, and B reference voltages selected from the switch, for generating the R, G and B image voltages corresponding to the R, G, and B data using the selected R, G, and B reference voltages, respectively, and the data control signal, and for supplying the generated R, G and B image voltages during the R, G, and B sub-frames respectively, to the liquid crystal display panel; and a gate driver for receiving the gate control signals from the timing controller and supplying the scanning signal voltage to the liquid crystal display panel in accordance with the gate control signal.