US 11,837,012 B2
Fingerprint sensor
Fumihito Shibano, Tokyo (JP); Hiroshi Mizuhashi, Tokyo (JP); Toshinori Uehara, Tokyo (JP); Kimiyo Nonoyama, Tokyo (JP); and Hayato Kurasawa, Tokyo (JP)
Assigned to Japan Display Inc., Tokyo (JP)
Filed by Japan Display Inc., Tokyo (JP)
Filed on Jan. 18, 2023, as Appl. No. 18/098,278.
Application 18/098,278 is a continuation of application No. 17/187,101, filed on Feb. 26, 2021, granted, now 11,562,595.
Application 17/187,101 is a continuation of application No. 16/845,911, filed on Apr. 10, 2020, granted, now 10,963,663, issued on Mar. 30, 2021.
Application 16/845,911 is a continuation of application No. 16/531,887, filed on Aug. 5, 2019, granted, now 10,621,405, issued on Apr. 14, 2020.
Application 16/531,887 is a continuation of application No. 15/469,755, filed on Mar. 27, 2017, granted, now 10,372,961, issued on Aug. 6, 2019.
Claims priority of application No. 2016-069293 (JP), filed on Mar. 30, 2016; and application No. 2017-053516 (JP), filed on Mar. 17, 2017.
Prior Publication US 2023/0154230 A1, May 18, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. G06K 9/28 (2006.01); G06V 40/13 (2022.01)
CPC G06V 40/1306 (2022.01) 5 Claims
OG exemplary drawing
 
1. A fingerprint sensor comprising: a substrate;
a plurality of sensor electrodes arranged on the substrate;
a plurality of first switches coupled to the sensor electrodes; an organic layer covering the sensor electrodes;
a control line drive circuit that is provided and long in a first direction;
a signal line drive circuit that is provided and long in a second direction orthogonal to the first direction;
a plurality of signal lines coupled to the first switches;
a plurality of control lines coupling the first switches to the control line drive circuit; a sensor drive electrode surrounding the sensor electrodes;
a plurality of second switches that are provided between the signal line drive circuit and the signal lines and in a one-to-one correspondence with the signal lines; and
a first number of third switches that are provided between the signal line drive circuit and the first number of second switches of all the second switches and in a one-to-one correspondence with the first number of second switches,
wherein a position of a surface of the organic layer is lower than a position of the sensor drive electrode, and
wherein the first number is less than the number of all the second switches.