US 11,810,394 B2
Fingerprint identification panel and fingerprint identification circuit thereof
Min-Nan Liao, Jhubei (TW)
Assigned to Sitronix Technology Corp., Jhubei (TW)
Filed by SITRONIX TECHNOLOGY CORP., Jhubei (TW)
Filed on Feb. 23, 2018, as Appl. No. 15/903,391.
Claims priority of provisional application 62/462,423, filed on Feb. 23, 2017.
Prior Publication US 2018/0260608 A1, Sep. 13, 2018
This patent is subject to a terminal disclaimer.
Int. Cl. G06V 40/12 (2022.01); G09G 3/36 (2006.01); G06V 40/13 (2022.01); G06V 40/14 (2022.01)
CPC G06V 40/1365 (2022.01) [G06V 40/1306 (2022.01); G06V 40/1318 (2022.01); G09G 3/3648 (2013.01); G06V 40/14 (2022.01); G09G 3/3677 (2013.01); G09G 2354/00 (2013.01); G09G 2358/00 (2013.01)] 26 Claims
OG exemplary drawing
 
1. A fingerprint identification circuit, applied for fingerprint identification, said fingerprint identification circuit comprising:
a gate driving circuit, coupled to a plurality of gate lines of a panel, outputting a plurality of gate signals to said plurality of gate lines, and controlling a rising edge or a falling edge of said plurality of gate signals;
a source driving circuit, coupled to a plurality of source lines of said panel;
a detection circuit, coupled to said plurality of source lines or a portion of said plurality of source lines, detecting the level of a plurality of signals on said plurality of source lines coupled to said detection circuit, and generating a plurality of detection signals for fingerprint identification; and
a switching circuit, coupled between said plurality of source lines or said portion of said plurality of source lines and said detection circuit;
wherein said gate signal on said plurality of gate lines has said rising edge or falling edge, said rising edge pulls up the level of said plurality of signals on said plurality of source lines coupled to said detection circuit or said falling edge pulls down the level of said plurality of signals on said plurality of source lines coupled to said detection circuit, and said detection circuit detects said pulled-up level or said pulled-down level of said plurality of signals on said plurality of source lines and generates said plurality of detection signals for fingerprint identification, said plurality of signals on said plurality of source lines are isolated from a plurality of output signals of said source driving circuit when said gate signal has said rising edge or falling edge.