Surface structure identification unit and circuit, identification method and electronice device

摘要

The present invention provides a surface structure identification unit including photoelectric sensing element, first and second signal input terminals, trace line, driving module, reset module and evaluation unit. The photoelectric sensing element is connected to the first signal input terminal, and the driving module. The reset module is configured to be connected to the driving module in a reset stage to reset the same. The control terminal of the driving module is configured to be connected to the second signal input terminal and the trace line in a charging stage and disconnected from the trace line in a detecting stage; the first terminal of the driving module is configured to be disconnected from the first signal input terminal in the charging stage and connected to the first signal input terminal in the detecting stage; and a second terminal of the driving module is connected to the trace line.