SEMICONDUCTOR DEVICE AND ELECTRONIC DEVICE USING THE SAME
First Claim
1. A semiconductor device comprising:
- a first terminal;
a second terminal;
a photoelectric conversion element;
a resister; and
a transistor,wherein one of a source and a drain of the transistor is electrically connected to the first terminal,wherein the other of the source and the drain of the transistor is electrically connected to the second terminal,wherein a gate of the transistor is electrically connected to a first terminal of the resister,wherein the first terminal of the resister is electrically connected to the first terminal through the photoelectric conversion element, andwherein a second terminal of the resister is electrically connected to the second terminal.
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Accused Products
Abstract
To provide a semiconductor device which can detect low illuminance. A photoelectric conversion element, a diode-connected first transistor, and a second transistor are included. A gate of the first transistor is electrically connected to a gate of the second transistor. One of a source and a drain of the first transistor is electrically connected to one of a source and a drain of the second transistor through the photoelectric conversion element. The other of the source and the drain of the first transistor is electrically connected to the other of the source and the drain of the second transistor. By using transistors which have different threshold voltages for the first transistor and the second transistor, a semiconductor device which can perform detecting of low illuminance can be obtained.
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Citations
34 Claims
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1. A semiconductor device comprising:
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a first terminal; a second terminal; a photoelectric conversion element; a resister; and a transistor, wherein one of a source and a drain of the transistor is electrically connected to the first terminal, wherein the other of the source and the drain of the transistor is electrically connected to the second terminal, wherein a gate of the transistor is electrically connected to a first terminal of the resister, wherein the first terminal of the resister is electrically connected to the first terminal through the photoelectric conversion element, and wherein a second terminal of the resister is electrically connected to the second terminal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A semiconductor device comprising:
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a first terminal; a second terminal; a photoelectric conversion element; a diode; and a transistor, wherein one of a source and a drain of the transistor is electrically connected to the first terminal, wherein the other of the source and the drain of the transistor is electrically connected to the second terminal, wherein a gate of the transistor is electrically connected to a first terminal of the diode, wherein the first terminal of the diode is electrically connected to the first terminal through the photoelectric conversion element, and wherein a second terminal of the diode is electrically connected to the second terminal. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. A semiconductor device comprising:
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a photoelectric conversion element; a diode-connected first transistor; and a second transistor, wherein one of a source and a drain of the diode-connected first transistor is electrically connected to one of a source and a drain of the second transistor through the photoelectric conversion element, wherein the other of the source and the drain of the diode-connected first transistor is electrically connected to the other of the source and the drain of the second transistor, wherein a gate of the second transistor is electrically connected to the one of the source and the drain of the diode-connected first transistor, wherein the diode-connected first transistor and the second transistor comprise an oxide semiconductor, and wherein the diode-connected first transistor and the second transistor have different threshold voltages. - View Dependent Claims (24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34)
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Specification