Patent ID: 7161569
Filing Date: 2007-01-09
Classification: G09G

Abstract:
1. A driving method of a liquid crystal display panel in which a liquid crystal layer is sealed between a transparent first substrate formed with a plurality of scanning electrodes and a transparent second substrate formed with a plurality of data electrodes, said electrodes being formed on respective inner faces opposing each other, and portions where said scanning electrodes and data electrodes oppose each other with said liquid crystal layer sandwiched therebetween constitute pixel portions respectively, and which performs display by an electrooptical change having a memory property in said liquid crystal layer at each said pixel portion, wherein selection signals are applied to said plurality of scanning electrodes and a data signal is applied to said data electrode in correspondence with said selection signal of each said scanning electrode to control said individual pixel portion independently, and a plurality of sets of said selection signals having different time lengths of selection periods for selecting one scanning electrode are provided to respectively correspond to different time lengths of a write period for displaying one picture, and selectively applied in accordance with operation state and necessary write frequency of the liquid crystal display panel, as said selection signals, and a liquid crystal layer charge memory period, during which potentials of said scanning electrode and said data electrode are set to a floating potential, is provided after each said pixel portion within a display region of said liquid crystal display panel is selected at least once and display contents thereof are rewritten.