US 11,721,717 B2
Optical system
Quchao Xu, Hong Kong (HK); and Qiming Li, Hong Kong (HK)
Assigned to Jade Bird Display (Shanghai) Limited, Shanghai (CN)
Filed by HONG KONG BEIDA JADE BIRD DISPLAY LIMITED, Hong Kong (HK)
Filed on Aug. 31, 2020, as Appl. No. 17/7,472.
Prior Publication US 2022/0068996 A1, Mar. 3, 2022
Int. Cl. H01L 27/15 (2006.01); H01L 33/62 (2010.01); H01L 33/58 (2010.01)
CPC H01L 27/156 (2013.01) [H01L 33/58 (2013.01); H01L 33/62 (2013.01)] 19 Claims
OG exemplary drawing
 
1. An optical system, comprising:
a light combination unit;
a first LED panel, located at one side of the light combination unit and configured to emit a first light; and
a second LED panel, located at another side of the light combination unit and configured to emit a second light, the second LED panel comprising a plurality of second LED pixels, and each of the second LED pixels comprising:
a substrate;
a first bonding layer disposed on the substrate;
a first color LED layer disposed on the first bonding layer and emitting a first color light;
a second bonding layer disposed on the first color LED layer; and
a second color LED layer disposed on the second bonding layer and emitting a second color light;
wherein, the first LED panel is a monochrome LED panel, and the second LED panel is a double color LED panel; the first LED panel and the second LED panel respectively emit the first light and the second light into the light combination unit, and the light combination unit combines and collimates the first light and the second light along one direction.