Semiconductor device and electronic device using the same

Active solid-state devices (e.g. – transistors – solid-state diode – Field effect device – Having insulated electrode

Reexamination Certificate

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Details

C257S431000, C257S458000, C257SE27130, C257SE31113

Reexamination Certificate

active

08058675

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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Chinese Office Action (Application No. 200710160845.7) Dated Jul. 1, 2010.

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