US 11,916,170 B2
Micro-light-emitting diode chip and micro-light-emitting diode display
Sheng-Yuan Sun, MiaoLi County (TW); Loganathan Murugan, MiaoLi County (TW); and Po-Wei Chiu, MiaoLi County (TW)
Assigned to PlayNitride Display Co., Ltd., Miaoli County (TW)
Filed by PlayNitride Display Co., Ltd., MiaoLi County (TW)
Filed on Sep. 13, 2021, as Appl. No. 17/472,704.
Claims priority of application No. 110104125 (TW), filed on Feb. 4, 2021.
Prior Publication US 2022/0246800 A1, Aug. 4, 2022
Int. Cl. H01L 33/38 (2010.01); H01L 25/075 (2006.01); H01L 33/46 (2010.01); H01L 33/54 (2010.01)
CPC H01L 33/382 (2013.01) [H01L 25/0753 (2013.01); H01L 33/46 (2013.01); H01L 33/54 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A micro-light-emitting diode display, comprising:
a driving substrate; and
a micro-light-emitting diode chip disposed on the driving substrate and comprising:
an epitaxial structure having a light exit surface, a back surface, and a sidewall surface, wherein the back surface is opposite to the light exit surface, and the sidewall surface is connected to the light exit surface and the back surface;
an electrode formed on the epitaxial structure and electrically coupled to the epitaxial structure;
a transparent structure having an inner surface and an outer surface, wherein the inner surface is connected to the sidewall surface, the outer surface is opposite to the inner surface, and a distance between the outer surface and the inner surface on a plane where the back surface is located is less than a distance between the outer surface and the inner surface on a plane where the light exit surface is located; and
a reflection layer in direct contact with the outer surface, wherein the micro-light-emitting diode chip is bonded on the driving substrate via the electrode, wherein the micro-light-emitting diode display comprises a plurality of the micro-light-emitting diode chips, the plurality of micro-light-emitting diode chips comprise a first micro-light-emitting diode chip and a second micro-light-emitting diode chip, and the outer surface of the transparent structure in the first micro-light-emitting diode chip has a smaller inclination angle than the outer surface of the transparent structure in the second micro-light-emitting diode chip.