US 11,656,394 B2
Sensing device
Hung-Shan Chen, Tainan (TW); and Ming-Syuan Chen, Tainan (TW)
Assigned to LIQXTAL TECHNOLOGY INC., Tainan (TW)
Filed by LIQXTAL TECHNOLOGY INC., Tainan (TW)
Filed on Jul. 27, 2021, as Appl. No. 17/386,525.
Claims priority of provisional application 63/156,371, filed on Mar. 4, 2021.
Prior Publication US 2022/0283350 A1, Sep. 8, 2022
Int. Cl. G02B 5/30 (2006.01); G01J 1/42 (2006.01)
CPC G02B 5/3016 (2013.01) [G01J 1/4204 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A sensing device, comprising:
a sensor;
a reflective polarizer disposed on the sensor and contacting the sensor;
a dye-doped polymeric layer disposed on the reflective polarizer; and
a patterned liquid crystal polymer layer disposed on the dye-doped polymeric layer, wherein the dye-doped polymeric layer includes an iodine dopant or a dichroic dye dopant,
wherein the sensor is an ambient light sensor, a fingerprint recognition sensor, or an image sensor.