US 11,668,970 B2
Display device
Naru Usukura, Sakai (JP)
Assigned to SHARP KABUSHIKI KAISHA, Sakai (JP)
Filed by SHARP KABUSHIKI KAISHA, Sakai (JP)
Filed on Nov. 22, 2021, as Appl. No. 17/532,935.
Claims priority of provisional application 63/119,943, filed on Dec. 1, 2020.
Prior Publication US 2022/0171234 A1, Jun. 2, 2022
Int. Cl. G02F 1/1335 (2006.01); G02F 1/1333 (2006.01); G02F 1/13363 (2006.01); G02F 1/13357 (2006.01)
CPC G02F 1/133514 (2013.01) [G02F 1/133302 (2021.01); G02F 1/133536 (2013.01); G02F 1/133603 (2013.01); G02F 1/133621 (2013.01); G02F 1/133638 (2021.01); G02F 2203/02 (2013.01); G02F 2203/055 (2013.01); G02F 2203/06 (2013.01); G02F 2203/07 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A display device comprising:
a color filter including a first transmissive filter, a second transmissive filter, and a third transmissive filter, the first, the second, and the third transmissive filters being configured to transmit respective light beams having peak wavelengths different from each other;
a first selective-wavelength-reflection layer adjacent to an optical-input surface of the first transmissive filter, the first selective-wavelength-reflection layer being configured to reflect light of a wavelength band that passes through the third transmissive filter;
a second selective-wavelength-reflection layer adjacent to an optical-input surface of the second transmissive filter, the second selective-wavelength-reflection layer being configured to reflect light of a wavelength band that passes through the third transmissive filter, the second selective-wavelength-reflection layer being identical in composition to the first selective-wavelength-reflection layer; and
a light emitter configured to emit light that travels toward the color filter,
wherein the first and the second selective-wavelength-reflection layers comprise a reflective member configured to reflect circularly polarized light.