US 12,225,750 B2
Organic electroluminescence display device
Jungjin Yang, Seoul (KR); Myunghwan Kim, Hanam-si (KR); Seohyun Kim, Seoul (KR); Ji-young Kim, Seoul (KR); Jinwoo Park, Yongin-si (KR); Wonjun Song, Hwaseong-si (KR); Taewoong Yoo, Seoul (KR); Soojung Youn, Seoul (KR); Kwanhee Lee, Seoul (KR); and Seokjae Lee, Hwaseong-si (KR)
Assigned to Samsung Display Co., Ltd., Yongin-si (KR)
Filed by SAMSUNG DISPLAY CO., LTD., Yongin-si (KR)
Filed on Jan. 8, 2024, as Appl. No. 18/407,374.
Application 18/407,374 is a continuation of application No. 18/148,194, filed on Dec. 29, 2022, granted, now 11,871,597.
Application 18/148,194 is a continuation of application No. 17/352,111, filed on Jun. 18, 2021, granted, now 11,545,643, issued on Jan. 3, 2023.
Application 17/352,111 is a continuation of application No. 16/383,362, filed on Apr. 12, 2019, granted, now 11,043,649, issued on Jun. 22, 2021.
Claims priority of application No. 10-2018-0047519 (KR), filed on Apr. 24, 2018.
Prior Publication US 2024/0147755 A1, May 2, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. H10K 50/805 (2023.01); H10K 50/15 (2023.01); H10K 50/16 (2023.01); H10K 59/32 (2023.01)
CPC H10K 50/805 (2023.02) [H10K 50/15 (2023.02); H10K 50/16 (2023.02); H10K 59/32 (2023.02)] 20 Claims
OG exemplary drawing
 
1. A light emitting display device comprising:
a display panel including a first light emitting region, a second light emitting region, a third light emitting region, and a non-light emitting region; and
an additional member on the display panel,
wherein the display panel comprises:
a substrate comprising a base layer and a circuit layer on the base layer;
a first electrode comprising a first sub-electrode on the first light emitting region; a second sub-electrode on the second light emitting region; and a third sub-electrode on the third light emitting region;
a pixel defining layer on the non-light emitting region;
a first light emitting unit on the first electrode;
a charge generation unit comprising an n-type charge generation layer on the first light emitting unit and a p-type charge generation layer on the n-type charge generation layer;
a second light emitting unit on the charge generation unit; and
a second electrode on the second light emitting unit,
wherein the first light emitting unit comprises a first red light emitting layer on the first sub-electrode, a first green light emitting layer on the second sub-electrode, and a first blue light emitting layer on the third sub-electrode,
wherein the n-type charge generation layer comprises an electron transport material and an n-type dopant, and the p-type charge generation layer comprises a hole transport material and a p-type dopant,
wherein the second light emitting unit comprises a second red light emitting layer on the first red light emitting layer, a second green light emitting layer on the first green light emitting layer; and a second blue light emitting layer on the first blue light emitting layer, and
wherein a portion of the n-type charge generation layer is located on the pixel defining layer, and the p-type charge generation layer is not located on the pixel defining layer.