English Abstract of Korean Publication No. 10-2022-
`qo) Limited States
`a2) Patent Application Publication coPub. No.: US 2022/0246698 Al
`
`
`(43) Pub. DatesKimet al. Aug. 4, 2022
`
`
`
`
`“
`US 2622024669841
`
`(54) DISPLAY APPARATUS
`
`(72)
`
`(74) Apphcant: Samsung Display Co., Ltd.. Yongin-si
`(RR}
`.
`Inventors: Self Kim, Yongin-si CAR); Dongkvun
`Ahn, Yongin-si (KE), Jumgweo Ko,
`Yongin-si C9R): Sanemin Yi, Yongin-si
`(KR)
`
`(21) Appl No.: 27/872,413
`
`(22)
`
`Filed:
`
`dan. 16, 2022
`
`G9)
`
`Foreign AppHcation Priority Data
`
`Feb. 2, 2021
`
`(BR) wee 16-2021 -0014973
`
`Publication Classification
`
`($1)
`
`fat. CL
`HOLL 2732
`AGIL §L/S2
`
`(2006.01)
`(2606.03
`
`($2) U.S. CL
`CPC on AGL 37/3248 (2013.01); HOLL 51/5044
`(2013.01); HOD $245225 (2013.01)
`ABSTRACT
`(57}
`A display apparatus includes: a substrate; a 1-1 light-
`emitting device and a 1-2 heht-emitting device over the
`substrate and cach comprising a first emission layer and a
`first charge generation layer; a second light-emitting device
`adjacent to the 1-1 light-emitting device and comprising a
`second emission layer comprising a material that emits light
`ofa color different from that ofthe first emission layer and
`a second charge generation layer spaced apart fromthe first
`charge generationlzayer and a pixei-defiming layer compris-
`ing an opening exposing a center portion ofa pixel electrode
`
`of each of the 1-1 light-emi
`ing device, the 1-2 Heht-
`emitting device, and the second light-emitting device,
`wherein an upper surface ofthe pixel-detininglayer between
`the 1-1 light-emitting device and the 1-2 hight--ernitting
`device comprises a first groove concave toward the sub-
`
`strate, wherein thefirst charge generation layer is cut off at
`the first groove.
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