US 12,277,795 B2
Optical fingerprint sensor with enhanced anti-counterfeiting features
Feng-Chien Hsieh, Pingtung County (TW); Yun-Wei Cheng, Taipei (TW); Kuo-Cheng Lee, Tainan (TW); Cheng-Ming Wu, Tainan (TW); and Wei-Li Hu, Tainan (TW)
Assigned to TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD, Hsinchu (TW)
Filed by Taiwan Semiconductor Manufacturing Company, Ltd., Hsin-Chu (TW)
Filed on Mar. 22, 2023, as Appl. No. 18/187,891.
Claims priority of provisional application 63/382,143, filed on Nov. 3, 2022.
Claims priority of provisional application 63/389,292, filed on Jul. 14, 2022.
Prior Publication US 2024/0021009 A1, Jan. 18, 2024
Int. Cl. G06V 40/12 (2022.01); G06V 40/13 (2022.01); H01L 27/146 (2006.01)
CPC G06V 40/1318 (2022.01) [G06V 40/1353 (2022.01); G06V 40/1365 (2022.01); H01L 27/14621 (2013.01); H01L 27/14623 (2013.01); H01L 27/14627 (2013.01); H01L 27/14678 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An image sensing apparatus, comprising:
a pixel array, the pixel array comprising:
a plurality of sensing pixels configured to capture minutia points of a fingerprint; and
a plurality of positioning pixels configured to provide vectors from the minutia points to the positioning pixels for anti-counterfeiting identification; and
a plurality of micro lenses disposed above the pixel array.