US 11,742,460 B2
Display device and method of manufacturing the same
Seung Min Lee, Yongin-si (KR); Jin Taek Kim, Yongin-si (KR); Baek Hyeon Lim, Yongin-si (KR); Jin Yeong Kim, Yongin-si (KR); Kyung Tae Chae, Yongin-si (KR); Jung Hwan Yi, Yongin-si (KR); and Hee Keun Lee, Yongin-si (KR)
Assigned to Samsung Display Co., Ltd., Yongin-si (KR)
Filed by Samsung Display Co., Ltd., Yongin-si (KR)
Filed on Nov. 13, 2020, as Appl. No. 17/98,117.
Claims priority of application No. 10-2020-0032740 (KR), filed on Mar. 17, 2020.
Prior Publication US 2021/0296537 A1, Sep. 23, 2021
Int. Cl. H01L 33/38 (2010.01); H01L 33/54 (2010.01); H01L 33/62 (2010.01); H01L 25/075 (2006.01); H01L 25/16 (2023.01); H01L 27/15 (2006.01); G09F 9/33 (2006.01); H01L 21/02 (2006.01); H01L 21/768 (2006.01); H01L 27/12 (2006.01); H01L 33/00 (2010.01)
CPC H01L 33/382 (2013.01) [H01L 33/0095 (2013.01); H01L 33/54 (2013.01); H01L 2933/005 (2013.01); H01L 2933/0016 (2013.01)] 12 Claims
OG exemplary drawing
 
9. A method of manufacturing a display device, the method comprising:
providing a pixel in each pixel area on a substrate, the providing the pixel comprising:
forming a transistor and a driving voltage line on the substrate;
forming a first insulating material layer on the transistor and the driving voltage line;
forming an insulating pattern having a sub opening exposing the first insulating material layer by forming a second insulating material layer on the first insulating material layer and removing a portion of the second insulating material layer;
forming a passivation layer having a groove and an insulating layer having an opening with a width greater than a width of the sub opening by removing a portion of the exposed first insulating material layer using the insulating pattern as an etching mask;
forming a first electrode and a second electrode spaced apart from each other on the insulating layer;
supplying light emitting elements to the pixel area and aligning the light emitting elements by forming an electric field between the first electrode and the second electrode by applying an alignment signal corresponding to each of the first and second electrodes; and
forming a contact electrode on each of the first and second electrodes.