CPC G06V 40/1318 (2022.01) [H10K 59/40 (2023.02); H10K 71/00 (2023.02)] | 26 Claims |
1. A fingerprint sensor, comprising:
a light sensing layer comprising a light sensing element; and
a light guide layer disposed on the light sensing layer,
wherein the light guide layer comprises:
a plurality of first light-transmitting films;
a light-blocking film disposed between neighboring light-transmitting films of the plurality of first light-transmitting films; and
a second light-transmitting film disposed between each of the plurality of first light-transmitting films and the light-blocking film,
wherein the second light-transmitting film is a single, continuous film,
wherein the second light-transmitting film is disposed on a top surface of each of the plurality of first light-transmitting films and a lower surface of the light-blocking film,
wherein the second light-transmitting film is disposed between a side surface of each of the plurality of first light-transmitting films and a side surface of the light-blocking film, and
wherein the second light-transmitting film is not disposed on a lower surface of each of the plurality of first light-transmitting films and a top surface of the light-blocking film.
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