SEMICONDUCTOR DISPLAY DEVICE AND DRIVING METHOD THE SAME
1 Assignment
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Accused Products
Abstract
It is an object to provide a semiconductor display device having a touch panel, which can reduce power consumption. The semiconductor display device includes a panel which is provided with a pixel portion and a driver circuit which controls an input of the image signal to the pixel portion, and a touch panel provided in a position overlapping with the panel in the pixel portion. The pixel portion includes a display element configured to perform display in accordance with voltage of the image signal to be input, and a transistor configured to control retention of the voltage. The transistor includes an oxide semiconductor in a channel formation region. The driving frequency of the driver circuit, that is, the number of writing operations of the image signal for a certain period is changed in accordance with an operation signal from a touch panel.
9 Citations
16 Claims
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1. (canceled)
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2. A display device comprising:
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a pixel portion comprising; a transistor, a channel formation region of the transistor comprising an oxide semiconductor; and a display element electrically connected to the transistor; a driver circuit electrically connected to the pixel portion; and a touch panel overlapping with the pixel portion, wherein a driving frequency of the driver circuit is changed in accordance with an operation signal supplied from the touch panel. - View Dependent Claims (3, 4, 5, 6, 7, 8, 9)
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10. A display device comprising:
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a pixel portion comprising; a transistor, a channel formation region of the transistor comprising an oxide semiconductor; a display element electrically connected to the transistor; and a photosensor; and a driver circuit electrically connected to the pixel portion, wherein a driving frequency of the driver circuit is changed in accordance with an operation signal supplied from the photosensor. - View Dependent Claims (11, 12, 13, 14, 15, 16)
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Specification