US 11,855,121 B2
LED chip and manufacturing method of the same
Jong Min Jang, Ansan-si (KR); Chang Yeon Kim, Ansan-si (KR); and Myoung Hak Yang, Ansan-si (KR)
Assigned to Seoul Viosys Co., Ltd., Ansan-si (KR)
Filed by Seoul Viosys Co., Ltd., Ansan-si (KR)
Filed on Apr. 15, 2020, as Appl. No. 16/848,914.
Claims priority of provisional application 62/866,519, filed on Jun. 25, 2019.
Claims priority of provisional application 62/847,836, filed on May 14, 2019.
Prior Publication US 2020/0365647 A1, Nov. 19, 2020
Int. Cl. H01L 27/15 (2006.01); H01L 25/075 (2006.01); H01L 33/00 (2010.01); H01L 33/38 (2010.01); H01L 33/54 (2010.01); H01L 33/62 (2010.01); H01L 33/44 (2010.01)
CPC H01L 27/15 (2013.01) [H01L 25/0753 (2013.01); H01L 33/007 (2013.01); H01L 33/0095 (2013.01); H01L 33/38 (2013.01); H01L 33/44 (2013.01); H01L 33/54 (2013.01); H01L 33/62 (2013.01); H01L 2933/005 (2013.01); H01L 2933/0016 (2013.01); H01L 2933/0025 (2013.01); H01L 2933/0066 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A light emitting chip, comprising:
a first LED sub-unit;
a second LED sub-unit disposed on the first LED sub-unit;
a third LED sub-unit disposed on the second LED sub-unit;
a first bonding layer interposed between the first and second LED sub-units;
a second bonding layer interposed between second and third LED sub-units; and
a plurality of first connection electrodes electrically connected to and overlapping at least one of the first, second, and third LED sub-units, each of the first connection electrodes having first and second opposing side surfaces, the first side surface having a first length and the second side surface having a second length greater than the first length,
wherein the difference in length between the first side surface and the second side surface of the first connection electrode is greater than a thickness of at least one of the LED sub-units,
wherein the first side surface of the first connection electrode is substantially continuous and overlaps the first LED sub-unit, and the first length is greater than the thickness of at least one of the LED sub-units, and
wherein a shortest distance between the second sides surfaces of adjacent first connection electrodes is greater than a shortest distance between the first side surfaces of the adjacent first connection electrodes.