Picture display device and method of driving the same
First Claim
Patent Images
1. A projection type display device including at least a screen and a panel, the panel comprising:
- a pixel including a switching element, wherein the switching element is electrically connected to a scan line and a signal line, a gate driver electrically connected to the scan line, a source driver electrically connected to the signal line, and a signal processing circuit for providing a first video signal and a second video signal to the source driver.
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Abstract
In a picture display device, a picture having high gradation is obtained by using an alternating method which can deal with a video signal having a high frequency band region. On the basis of an input signal, a signal processing circuit outputs a pair of analog video signals (a signal reversal frequency is one frame), which have inversion relationships with each other, to a signal line drive circuit, and the signal line drive circuit applies one of the inputted pair of video signals to an odd signal line, and applies the other of the video signals to an even signal line, so that source line reversal drive is carried out.
22 Citations
21 Claims
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1. A projection type display device including at least a screen and a panel,
the panel comprising: -
a pixel including a switching element, wherein the switching element is electrically connected to a scan line and a signal line, a gate driver electrically connected to the scan line, a source driver electrically connected to the signal line, and a signal processing circuit for providing a first video signal and a second video signal to the source driver. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A projection type display device including at least a screen and a panel,
the panel comprising: -
a pixel including a switching element, wherein the switching element is electrically connected to a scan line and a signal line, a gate driver electrically connected to the scan line, a source driver electrically connected to the signal line, and a signal processing circuit for providing a first video signal and a second video signal to the source driver, wherein the source driver applies the first video signal to an odd signal line, and applies the second video signal to an even signal line. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A projection type display device including at least a screen and a panel,
the panel comprising: -
a pixel including a switching element, wherein the switching element is electrically connected to a scan line and a signal line, a gate driver electrically connected to the scan line, a source driver electrically connected to the signal line, and a signal processing circuit for providing a first video signal and a second video signal to the source driver, wherein the source driver includes a first shift register and a second shift register, wherein the first shift register is electrically connected to an odd signal line, and wherein the second shift register is electrically connected to an even signal line. - View Dependent Claims (16, 17, 18, 19, 20, 21)
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Specification
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Current AssigneeSemiconductor Energy Laboratory Co., Ltd.
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Original AssigneeSemiconductor Energy Laboratory Co., Ltd.
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InventorsHiroki, Masaaki
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Granted Patent
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Time in Patent OfficeDays
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Field of Search
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US Class Current345/98
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CPC Class CodesG09G 2310/027 Details of drivers for data...G09G 2320/0247 Flicker reduction other tha...G09G 2320/0276 for the purpose of adaptati...G09G 2330/021 Power management, e.g. powe...G09G 3/2011 by amplitude modulationG09G 3/3614 Control of polarity reversa...G09G 3/3648 using an active matrix G09G...G09G 3/3688 suitable for active matrice...H04N 9/3105 for displaying all colours ...
