US 12,272,283 B2
Electronic circuit having display driving function, touch sensing function and fingerprint sensing function
Huan-Teng Cheng, Hsinchu (TW); Ting-Hsuan Hung, Hsinchu (TW); Tzu-Wen Hsieh, Hsinchu (TW); Wei-Lun Shih, Hsinchu (TW); and Huang-Chin Tang, Hsinchu County (TW)
Assigned to Novatek Microelectronics COrp., Hsinchu (TW)
Filed by Novatek Microelectronics Corp., Hsinchu (TW)
Filed on Jan. 24, 2024, as Appl. No. 18/421,930.
Application 18/421,930 is a continuation of application No. 18/170,541, filed on Feb. 17, 2023, granted, now 11,935,452.
Application 18/170,541 is a continuation of application No. 16/933,952, filed on Jul. 20, 2020, granted, now 11,625,939, issued on Apr. 11, 2023.
Claims priority of provisional application 62/881,912, filed on Aug. 1, 2019.
Claims priority of provisional application 62/898,551, filed on Sep. 11, 2019.
Claims priority of provisional application 62/912,660, filed on Oct. 9, 2019.
Claims priority of provisional application 62/924,671, filed on Oct. 22, 2019.
Prior Publication US 2024/0161672 A1, May 16, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. G06V 40/13 (2022.01); G06F 3/041 (2006.01); G09G 3/20 (2006.01)
CPC G09G 3/20 (2013.01) [G06F 3/0412 (2013.01); G06V 40/13 (2022.01); G06V 40/1318 (2022.01); G09G 2310/0272 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An electronic circuit comprising:
a plurality of common terminals;
a first circuit, configured to output display driving signals to data lines of a display panel via the common terminals;
a second circuit, configured to receive fingerprint sensing signals from fingerprint sensing lines of the display panel via the common terminals; and
a plurality of switch units, each comprises a first terminal coupled to one of the common terminals and a plurality of second terminals coupled to the first circuit and the second circuit, wherein each of the switch units comprises a first switch element and a second switch element,
wherein the first switch element is coupled between the first circuit and the first terminal and is controlled to transmit the display driving signals from the first circuit and the second switch element is coupled between the second circuit and the first terminal and is controlled to transmit the fingerprint sensing signals to the second circuit,
wherein the second switch elements of the switch units are grouped into a plurality of groups, and each group corresponds to a fingerprint sensing channel of the second circuit,
wherein the second switch element comprises:
a first switch device, coupled to the first terminal; and
a second switch device, coupled between the first switch device and the second circuit,
wherein the first switch device and the second switch device are controlled by different control signals.