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US 2011/0298996 A1Published application
Display Device
AssigneeSemiconductor Energy Laboratory Co., Ltd.
InventorsShunpei Yamazaki, Jun Koyama, Hirokazu Yamagata
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Abstract
Display bright in contrast can be obtained without discrination and flicker in the display device of the direct vision type whose pixel pitches are short to 20 μm or less. A liquid crystal panel is driven through the frame inverse driving method, and the vertical frame frequency is set to 120 Hz or more. Also, each of the pixels is arranged to correspond to one of R, G and B of color filters disposed on a TFT substrate side.
Claims11
1-40. (canceled)
A liquid crystal display device comprising:
- a source signal line, a first gate signal line, a second gate signal line, a first pixel electrode, a second pixel electrode, a third pixel electrode and a fourth pixel electrode over a substrate;
- and
- a color filter formed at a side of the substrate,
- wherein a first and a second video signals are supplied to the first pixel electrode via the first gate signal line,
- wherein a third and a fourth video signals are supplied to the second pixel electrode via the second gate signal line,
- wherein a fifth and a sixth video signals are supplied to the third pixel electrode via the first gate signal line,
- wherein a seventh and a eights video signals are supplied to the fourth pixel electrode via the second gate signal line,
- wherein the source signal line is interposed between the first pixel electrode and the third pixel electrode, and between the second pixel electrode and the fourth pixel electrode,
- wherein the second gate signal line is interposed between the first pixel electrode and the second pixel electrode, and between the third pixel electrode and the fourth pixel electrode,
- wherein the first video signal is supplied to the first pixel electrode in a first frame period,
- wherein the second video signal having an opposite polarity to the first video signal is supplied to the first pixel electrode in a second frame period subsequent to the first frame period,
- wherein the third video signal having a same polarity as the first video signal is supplied to the second pixel electrode in the first frame period,
- wherein the fourth video signal having an opposite polarity to the first video signal is supplied to the second pixel electrode in the second frame period,
- wherein the fifth video signal having a same polarity as the first video signal is supplied to the third pixel electrode in the first frame period,
- wherein the sixth video signal having an opposite polarity to the first video signal is supplied to the third pixel electrode in the second frame period,
- wherein the seventh video signal having a same polarity as the first video signal is supplied to the fourth pixel electrode in the first frame period,
- wherein the eighth video signal having an opposite polarity to the first video signal is supplied to the fourth pixel electrode in the second frame period, and
- wherein a frame frequency is 120 Hz or more.
15 more elements
A liquid crystal display device comprising:
- a source signal line, a first gate signal line and a second gate signal line over a substrate;
- an insulating film over the source signal line, the first gate signal line and the second gate signal line;
- a first pixel electrode, a second pixel electrode, a third pixel electrode and a fourth pixel electrode over the insulating film;
- and
- a color filter formed at a side of the substrate,
- wherein a first and a second video signals are supplied to the first pixel electrode via the first gate signal line,
- wherein a third and a fourth video signals are supplied to the second pixel electrode via the second gate signal line,
- wherein a fifth and a sixth video signals are supplied to the third pixel electrode via the first gate signal line,
- wherein a seventh and a eights video signals are supplied to the fourth pixel electrode via the second gate signal line,
- wherein the source signal line is interposed between the first pixel electrode and the third pixel electrode, and between the second pixel electrode and the fourth pixel electrode,
- wherein the second gate signal line is interposed between the first pixel electrode and the second pixel electrode, and between the third pixel electrode and the fourth pixel electrode,
- wherein the first video signal is supplied to the first pixel electrode in a first frame period,
- wherein the second video signal having an opposite polarity to the first video signal is supplied to the first pixel electrode in a second frame period subsequent to the first frame period,
- wherein the third video signal having a same polarity as the first video signal is supplied to the second pixel electrode in the first frame period,
- wherein the fourth video signal having an opposite polarity to the first video signal is supplied to the second pixel electrode in the second frame period,
- wherein the fifth video signal having a same polarity as the first video signal is supplied to the third pixel electrode in the first frame period,
- wherein the sixth video signal having an opposite polarity to the first video signal is supplied to the third pixel electrode in the second frame period,
- wherein the seventh video signal having a same polarity as the first video signal is supplied to the fourth pixel electrode in the first frame period,
- wherein the eighth video signal having an opposite polarity to the first video signal is supplied to the fourth pixel electrode in the second frame period, and
- wherein a frame frequency is 120 Hz or more.
17 more elements
Dependencies are inferred from the claim text.