Patent ID: 7692730
Filing Date: 2010-04-06
Classification: G02F,G09G

Abstract:
1. A liquid crystal display device, comprising: first and second substrates disposed so as to oppose with each other; a liquid crystal confined between the first and second substrates; a plurality of gate bus lines and a data bus line formed on said first substrate, said plurality of gate bus lines and said data bus line occupying an area on said first substrate, said plurality of gate bus lines including a first gate bus line located at an edge of said area; a plurality of first transistors formed on said first substrate and respectively connected to corresponding one of said gate bus lines and said data bus line, said plurality of first transistors including a transistor driven by a signal on said first gate bus line upon selection; a plurality of sub-picture element electrodes formed on said first substrate in each picture element region defined by one of said plurality of gate bus lines and said data bus line, said picture element region defined by said first gate bus line and said data bus line including a first sub-picture element electrode and a second sub-picture element electrode; a control electrode formed, in each picture element region, on said first substrate in capacitance coupling with at least one of said plurality of sub-picture element electrodes, said control electrode being applied with a display voltage from said data bus line via said first transistor; and an auxiliary capacitance bus line held, in each picture element region, at a predetermined voltage level and constituting an auxiliary capacitance between said auxiliary capacitance bus line and said control electrode, wherein there is provided a second transistor, in each said picture element region, between one of said plurality of sub-picture element electrodes coupled with said control electrode by said capacitance coupling and said auxiliary capacitance bus line or between one of said plurality of sub-picture element electrodes coupled with said control electrode by said capacitance coupling and one of said plurality of sub-picture element electrodes connected to said first transistor, said second transistor being driven, in each said picture element region, by a signal in one of said plurality of gate bus lines different from said gate bus line to which said first transistor is connected, wherein said liquid crystal display device further comprises an additional gate bus line different from any of said plurality of gate bus lines at an outside of said area on said first substrate and is adjacent to said picture element region defined by said first gate bus line and said data bus line, said additional gate bus line lacking any transistor that supplies, upon selection of said additional gate bus line, a signal on said data bus lines to any of said sub-picture element electrodes of any of said picture element regions on said first substrate, and wherein said picture element region defined by said first gate bus line includes an additional second transistor between said first sub-picture element electrode and said second sub-picture element electrode, said additional second transistor being driven by a signal on said additional gate bus line.