Westman, Champlin & Koehler, P.A.
Palmprint recognition circuit based on LTPS technology, a palmprint recognition method and a display screen
The disclosure provides a palmprint recognition circuit based on a LTPS technology, a palmprint recognition method and a display screen. The palmprint recognition circuit comprises an optical signal collecting unit, configured to collect an optical signal indicating a palmprint information and convert the collected optical signal into a current signal; a current signal amplifying unit, configured to amplify the converted current signal; and a current signal detecting unit, and configured to detect an intensity of the amplified current signal which indicates a ridge line or a valley line of the palmprint in the palmprint information. Therefore, it can solve the problem of having no palmprint recognition circuit and method for a LTPS-TFT display panel. This can eliminate an influence of a change of parasitic capacitance on the recognition result, wherein the change of parasitic capacitance is caused by a change of a wiring manner in the circuit.
BOE TECHNOLOGY GROUP CO., LTD. BEIJING BOE OPTOELECTRONICS TECHNOLOGY CO., LTD.
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G09G G06V G06V G06V G06V
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Weijie Xiaoliang Xiaochuan Tao Xue Lei Shengji Haisheng Wei Changfeng Yingming
Zhao Ding Chen Ren Dong Wang Yang Wang Liu Li Liu