US 11,886,087 B2
Lighting device and vehicle lamp having same
Yeong Seok Yu, Seoul (KR); Do Yub Kim, Seoul (KR); and Se Yeon Choi, Seoul (KR)
Assigned to LG INNOTEK CO., LTD., Seoul (KR)
Appl. No. 18/019,327
Filed by LG INNOTEK CO., LTD., Seoul (KR)
PCT Filed Aug. 10, 2021, PCT No. PCT/KR2021/010568
§ 371(c)(1), (2) Date Feb. 2, 2023,
PCT Pub. No. WO2022/035179, PCT Pub. Date Feb. 17, 2022.
Claims priority of application No. 10-2020-0100399 (KR), filed on Aug. 11, 2020.
Prior Publication US 2023/0273492 A1, Aug. 31, 2023
Int. Cl. G02F 1/137 (2006.01); G02F 1/1335 (2006.01); G02F 1/135 (2006.01)
CPC G02F 1/13718 (2013.01) [G02F 1/1357 (2021.01); G02F 1/133507 (2021.01)] 20 Claims
OG exemplary drawing
 
1. A lighting device comprising:
a substrate of light-transmissive material;
a light emitting device disposed on a lower surface of the substrate;
a reflective layer disposed to face a light emitting surface of the light emitting device;
a first resin layer disposed between the substrate and the reflective layer;
a second resin layer disposed on an upper surface of the substrate; and
a light-transmission control layer disposed on an upper surface of the second resin layer,
wherein the light-transmission control layer includes a liquid crystal layer including cholesteric liquid crystal,
wherein light emitted through the light emitting surface of the light emitting device is reflected by the reflective layer and is provided to the light-transmission control layer through the substrate,
wherein the first resin layer seals the light emitting device,
wherein the first resin layer is disposed between the reflective layer and the substrate,
wherein the reflective layer is disposed under a position of the light emitting device,
wherein the reflective layer includes a plurality of reflective patterns protruding from an upper surface of the reflective layer, and
wherein a thickness of the second resin layer is smaller than a thickness of the first resin layer.