US 11,855,110 B2
Fingerprint sensor, method for manufacturing fingerprint sensor, and display device including fingerprint sensor
Si Kwang Kim, Seongnam-si (KR)
Assigned to SAMSUNG DISPLAY CO., LTD., Yongin-si (KR)
Filed by SAMSUNG DISPLAY CO., LTD., Yongin-si (KR)
Filed on Aug. 24, 2021, as Appl. No. 17/409,948.
Claims priority of application No. 10-2020-0136675 (KR), filed on Oct. 21, 2020.
Prior Publication US 2022/0123036 A1, Apr. 21, 2022
Int. Cl. H01L 27/146 (2006.01); H01L 25/18 (2023.01); G06V 40/13 (2022.01)
CPC H01L 27/14623 (2013.01) [G06V 40/1318 (2022.01); H01L 25/18 (2013.01); H01L 27/14685 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A fingerprint sensor, comprising:
a light sensing layer including a light sensing element; and
an optical layer including a plurality of light transmitting areas, a light blocking area, a light transmitting member disposed in the plurality of light transmitting areas, a light blocking member disposed in the light blocking area, and a planarization member disposed on the light blocking member, wherein the light blocking area surrounds the plurality of light transmitting areas,
wherein the light transmitting member includes a first organic material, wherein the light blocking member includes a second organic material, and wherein the planarization member includes a third organic material and a positive-type photosensitive material.