Liquid crystal display device
First Claim
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1. A liquid crystal display device comprising:
- a pixel including a first transistor, a second transistor, a first liquid crystal element, a second liquid crystal element, a first capacitor, a second capacitor, and a third capacitor,wherein a first terminal of the first transistor is electrically connected to a first wiring,wherein a second terminal of the first transistor is electrically connected to the first liquid crystal element,wherein a gate of the first transistor is electrically connected to a second wiring,wherein a first terminal of the second transistor is electrically connected to the first wiring,wherein a second terminal of the second transistor is electrically connected to the second liquid crystal element,wherein a gate of the second transistor is electrically connected to the second wiring,wherein a first terminal of the first capacitor is electrically connected to the first liquid crystal element,wherein a second terminal of the first capacitor is electrically connected to a third wiring,wherein a first terminal of the second capacitor is electrically connected to the second liquid crystal element,wherein a second terminal of the second capacitor is electrically connected to a fourth wiring,wherein a first terminal of the third capacitor is electrically connected to the first liquid crystal element, andwherein a second terminal of the third capacitor is electrically connected to the second liquid crystal element,wherein the third wiring is supplied with a first pulse signal,wherein the fourth wiring is supplied with a second pulse signal, andwherein the first transistor and the second transistor include a channel region including an oxide semiconductor.
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Abstract
A semiconductor device or the like with low off-state current is provided. A semiconductor device or the like for displaying images accurately is provided. A display device or the like with a wide viewing angle is provided. A display device or the like in which image burn-in is suppressed is provided. In order to achieve any of the above objects, a circuit is formed using a transistor including an oxide semiconductor (OS), particularly a thin film MOS transistor including an oxide semiconductor. The oxide semiconductor is a substantially intrinsic semiconductor. Thus, the off-state current of the transistor is extremely low.
142 Citations
18 Claims
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1. A liquid crystal display device comprising:
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a pixel including a first transistor, a second transistor, a first liquid crystal element, a second liquid crystal element, a first capacitor, a second capacitor, and a third capacitor, wherein a first terminal of the first transistor is electrically connected to a first wiring, wherein a second terminal of the first transistor is electrically connected to the first liquid crystal element, wherein a gate of the first transistor is electrically connected to a second wiring, wherein a first terminal of the second transistor is electrically connected to the first wiring, wherein a second terminal of the second transistor is electrically connected to the second liquid crystal element, wherein a gate of the second transistor is electrically connected to the second wiring, wherein a first terminal of the first capacitor is electrically connected to the first liquid crystal element, wherein a second terminal of the first capacitor is electrically connected to a third wiring, wherein a first terminal of the second capacitor is electrically connected to the second liquid crystal element, wherein a second terminal of the second capacitor is electrically connected to a fourth wiring, wherein a first terminal of the third capacitor is electrically connected to the first liquid crystal element, and wherein a second terminal of the third capacitor is electrically connected to the second liquid crystal element, wherein the third wiring is supplied with a first pulse signal, wherein the fourth wiring is supplied with a second pulse signal, and wherein the first transistor and the second transistor include a channel region including an oxide semiconductor. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A liquid crystal display device comprising:
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a pixel including a first transistor, a second transistor, a third transistor, a first liquid crystal element, a second liquid crystal element, a first capacitor, a second capacitor, and a third capacitor, wherein a first terminal of the first transistor is electrically connected to a first wiring, wherein a second terminal of the first transistor is electrically connected to the first liquid crystal element, wherein a gate of the first transistor is electrically connected to a second wiring, wherein a first terminal of the second transistor is electrically connected to the first wiring, wherein a second terminal of the second transistor is electrically connected to the second liquid crystal element, wherein a gate of the second transistor is electrically connected to the second wiring, wherein a first terminal of the first capacitor is electrically connected to the first liquid crystal element, wherein a second terminal of the first capacitor is electrically connected to a third wiring, wherein a first terminal of the second capacitor is electrically connected to the second liquid crystal element, wherein a second terminal of the second capacitor is electrically connected to a fourth wiring, wherein a first terminal of the third transistor is electrically connected to the second liquid crystal element, wherein a second terminal of the third transistor is electrically connected to a first terminal of the third capacitor, and wherein a second terminal of the third capacitor is electrically connected to a fifth wiring. - View Dependent Claims (8, 9, 10, 11, 12)
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13. A liquid crystal display device comprising:
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a pixel including a first transistor, a second transistor, a third transistor, a first liquid crystal element, a second liquid crystal element, a first capacitor, a second capacitor, and a third capacitor, wherein a first terminal of the first transistor is electrically connected to a first wiring, wherein a second terminal of the first transistor is electrically connected to the first liquid crystal element, wherein a gate of the first transistor is electrically connected to a second wiring, wherein a first terminal of the second transistor is electrically connected to the first wiring, wherein a second terminal of the second transistor is electrically connected to the second liquid crystal element, wherein a gate of the second transistor is electrically connected to the second wiring, wherein a first terminal of the first capacitor is electrically connected to the first liquid crystal element, wherein a second terminal of the first capacitor is electrically connected to a third wiring, wherein a first terminal of the second capacitor is electrically connected to the second liquid crystal element, wherein a second terminal of the second capacitor is electrically connected to a fourth wiring, wherein a first terminal of the third capacitor is electrically connected to the second liquid crystal element, wherein a second terminal of the third capacitor is electrically connected to a first terminal of the third transistor, and wherein a second terminal of the third transistor is electrically connected to a fifth wiring. - View Dependent Claims (14, 15, 16, 17, 18)
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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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InventorsKimura, Hajime, Umezaki, Atsushi, Yamazaki, Shunpei
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Primary Examiner(s)NGUYEN, THANH NHAN P
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Application NumberUS13/110,403Publication NumberTime in Patent Office1,350 DaysField of Search349/38, 349/39, 349/48US Class Current349/39CPC Class CodesG09G 2300/0426 Layout of electrodes and co...G09G 2300/0447 for multi-domain technique ...G09G 2320/0214 with crosstalk due to leaka...G09G 3/3648 using an active matrix G09G...H01L 27/1225 with semiconductor material...
