Patent ID: 7567312
Filing Date: 2009-07-28
Classification: G09G

Abstract:
1. A method for improving viewing quality of a transflective liquid crystal display having a first side, an opposing second side, and a liquid crystal layer disposed between the first and second sides, the display comprising a plurality of pixels, at least some of the pixels including a plurality of sub-pixels, each sub-pixel comprising a transmission area and a reflection area, wherein the transmission area comprises a transmissive electrode disposed adjacent to the second side, allowing light entering the sub-pixel from the second side to be transmitted through the transmissive electrode, and the liquid crystal layer and then to the first side, and the reflection area comprises a reflective electrode disposed adjacent to the second side spaced from the transmissive electrode, allowing light entering the sub-pixel from the first side through the liquid crystal layer to be reflected by the reflective electrode back through the liquid crystal layer and then to the first side, and wherein the liquid crystal display is operable in a first state and in a second state for controlling optical behavior of the liquid crystal layer for viewing, said method comprising the steps of: providing a first charge storage capacitance in the transmission area; providing a second charge storage capacitance in the reflection area, the second charge storage capacitance having a relative capacitance value compared to the first charge storage capacitance; and controlling at least one of the first charge storage capacitance and the second charge storage capacitance such that the relative capacitance value when the liquid crystal display is operated in the first state is different from the relative capacitance value when the liquid crystal display is operated in the second state.