H.C. Park & Associates, PLC
Fingerprint detection device and driving method therefor
A fingerprint detection device including a plurality of fingerprint sensing elements, and each fingerprint sensing element includes: a sensing electrode for forming a sensing capacitance from a relationship with a subject; an amplifier having a first input end connected to the sensing electrode and a second input end into which a bias signal, of which a potential is changed from a high level to a low level or from the low level to the high level during a fingerprint detection operation, is inputted; and a gain controller including a plurality of sub-feedback capacitances, the gain controller selectively connected between the first input end and an output end of the amplifier.
Crucialtec Co., Ltd.
G
G06V
inventional
Taek Moo Dong Woon Jung Hyun
Kim Kim Kim