OPTICAL SENSOR, DRIVING METHOD THEREOF, VEIN SENSOR AND FINGERPRINT SENSOR

摘要

PROBLEM TO BE SOLVED: To provide an optical sensor having high performance.

SOLUTION: An optical sensor 1 includes: measuring cells 20; a first selection line GSELA; and a reading line Sense. Each measuring cell comprises: a light receiving element PD; a first transistor AMPTFT1; a second transistor AMPTFT2; and a selection transistor SELTFT. A gate and a source of the first transistor AMPTFT1 are connected to a first pole of the light receiving element PD and a gate of the second transistor AMPTFT2. A drain, a gate and a source of the selection transistor SELTFT are connected to a source of the second transistor AMPTFT2, the first selection line GSELA and the reading line Sense. Thus, the optical sensor 1 that satisfies both high-speed measurement and highly accurate measurement is realized.

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