| 摘要 |
A field sequential liquid crystal display device includes a circuit unit producing RGB reference voltages and scanning signal voltages using RGB data and control signals, a liquid crystal display panel changing alignment direction of liquid crystal molecules in accordance with the RGB reference voltages and the scanning signal voltages, and a backlight device emitting light to the liquid crystal display panel, wherein the circuit unit includes an interface receiving the RGB data and the control signals, a timing controller generating gate control signals and data control signals, at least two gamma generating units generating the RGB reference voltages, a switch selecting one of the RGB reference voltages, a data driver receiving the data control signal and the selected RGB reference voltage selected from the switch, and supplying an RGB image voltage to the liquid crystal display panel in accordance with the selected RGB reference voltage and the data control signal, and a gate driver 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. |
| 主权项 |
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:
an interface for receiving the R, G, and B data and the control signals from the external driving system;a timing controller for generating gate control signals and data control signals in accordance with the R, G, and B data and the control signals;a plurality of gamma generating units, in parallel with each other, each gamma generating unit for generating one each of a R, G, and B reference voltage, wherein the R, G, and B reference voltages from each of the plurality of gamma generating units are different values respectively, including a first gamma generating unit for generating R, G, and B reference voltages considering intrinsic transmissivity-voltage characteristics of the liquid crystal display panel and a second gamma generating unit for generating R, G, and B reference voltages to produce a lowest transmissivity of a blue color when a black color is displayed on the liquid crystal display panel; 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. |
