公开(公告)号：US20240405169A1

公开(公告)日：2024-12-05

申请号：US18675532

申请日：2024-05-28

Applicant: EPISTAR CORPORATION

Inventor： Chong-Yu WANG ,  Wei-Shan HU ,  Ching-Tai CHENG ,  Chien-Chih CHEN ,  Min-Hsun HSIEH

IPC: H01L33/50 ,  H01L25/16

Abstract: A wavelength conversion unit arrangement includes a carrier and a wavelength conversion unit. The wavelength conversion unit includes a wavelength conversion layer and a filter layer, and the filter layer attaches the wavelength conversion unit to the carrier. The filter layer has a first surface facing the carrier and a second surface opposite the first surface, and the first surface and the second surface have different textures.

公开(公告)号：US20230207540A1

公开(公告)日：2023-06-29

申请号：US18082199

申请日：2022-12-15

Applicant: EPISTAR CORPORATION ,  Yenrich Technology Corporation

Inventor： Min-Hsun HSIEH ,  Hsin-Mao LIU ,  Tzu-Hsiang WANG ,  Ya-Wen LIN ,  Chi-Chih PU ,  Hsiao-Pei CHIU ,  Ching-Tai CHENG ,  Chong-Yu WANG

IPC: H01L25/13 ,  H01L25/075 ,  H01L33/54 ,  H01L33/58 ,  H01L33/62

CPC classification number: H01L25/13 ,  H01L25/0753 ,  H01L33/54 ,  H01L33/58 ,  H01L33/62

Abstract: A light-emitting device includes a circuit carrier board having a short side and a long side, a plurality of light-emitting units on the circuit carrier board for emitting three or more color lights, and a light-transmitting glue layer on the circuit carrier board and covering the plurality of light-emitting units. The short side is shorter than the long side. The plurality of light-emitting units include a first light-emitting unit. The first light-emitting unit has a light exit surface, a first sidewall, and a second sidewall. The first sidewall faces the short side and has a first included angle with the light exit surface, and the second sidewall faces the long side and has a second included angle with the light exit surface. The first included angle is between 85 to 95 degrees, and the second included angle is less than 85 degrees or greater than 105 degrees.

公开(公告)号：US20230161196A1

公开(公告)日：2023-05-25

申请号：US17989578

申请日：2022-11-17

Applicant: EPISTAR CORPORATION ,  Yenrich Technology Corporation

Inventor： Chong-Yu WANG ,  Ching-Tai CHENG ,  Wei-Shan HU

IPC: G02F1/13357 ,  H01L25/13 ,  H01L25/075 ,  H01L33/60

CPC classification number: G02F1/133605 ,  H01L25/13 ,  H01L25/0753 ,  H01L33/60 ,  G02F1/133603 ,  H01L2933/0091

Abstract: A display device includes a first light-emitting module and a second light-emitting module. Each light-emitting module has a substrate, a plurality of LED dies arranged on the substrate, a reflective layer on the substrate, and a light-transmissive layer. The light-transmissive layer covers the substrate, the plurality of LED dies, and the reflective layer. Both the light-transmissive layer of the first module and the light-transmissive layer of the second module have rough uppermost surfaces. The first light-emitting module has a first reflectivity, the second light-emitting module has a second reflectivity, and a standard deviation between the first reflectivity and the second reflectivity is not greater than 0.5.