US 12,080,585 B2
Wet alignment method for micro-semiconductor chip and display transfer structure
Kyungwook Hwang, Seoul (KR); and Junsik Hwang, Hwaseong-si (KR)
Assigned to SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR)
Filed by SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR)
Filed on May 5, 2023, as Appl. No. 18/312,641.
Application 18/312,641 is a continuation of application No. 17/324,609, filed on May 19, 2021.
Claims priority of application No. 10-2020-0085248 (KR), filed on Jul. 10, 2020; and application No. 10-2021-0011792 (KR), filed on Jan. 27, 2021.
Prior Publication US 2023/0274969 A1, Aug. 31, 2023
Int. Cl. H01L 21/683 (2006.01); H01L 25/075 (2006.01); H01L 33/50 (2010.01); H01L 33/52 (2010.01); H01L 33/62 (2010.01)
CPC H01L 21/6835 (2013.01) [H01L 25/0753 (2013.01); H01L 33/50 (2013.01); H01L 33/52 (2013.01); H01L 33/62 (2013.01); H01L 2221/68309 (2013.01); H01L 2221/68313 (2013.01); H01L 2221/68354 (2013.01); H01L 2221/68368 (2013.01); H01L 2933/0041 (2013.01); H01L 2933/005 (2013.01); H01L 2933/0066 (2013.01)] 24 Claims
OG exemplary drawing
 
1. A wet alignment method for a micro-semiconductor chip, the wet alignment method comprising:
supplying a liquid to a plurality of grooves in a transfer substrate;
supplying a plurality of micro-semiconductor chips onto the transfer substrate; and
aligning the plurality of micro-semiconductor chips with the plurality of grooves by moving a liquid absorber over the plurality of grooves to contact directly with the transfer substrate,
wherein the supplying of the liquid, the supplying of the plurality of micro-semiconductor chips, and the aligning comprise:
soaking the liquid absorber in a suspension comprising the liquid and the plurality of micro-semiconductor chips to affix the plurality of micro-semiconductor chips onto the liquid absorber; and
scanning the transfer substrate by moving the liquid absorber along the plurality of grooves on the transfer substrate, to release the plurality of micro-semiconductor chips from the liquid absorber onto the transfer substrate and to draw the liquid from the plurality of grooves to the liquid absorber.