US 12,336,410 B2
Organic light emitting display apparatus having pixels of different structures
Jaeho Lee, Seoul (KR); Wonhoe Koo, Goyang-si (KR); Dongmin Sim, Paju-si (KR); Taemin Kim, Paju-si (KR); Hyekyung Choi, Seoul (KR); and Kyunghoon Han, Seoul (KR)
Assigned to LG DISPLAY CO., LTD., Seoul (KR)
Filed by LG Display Co., Ltd., Seoul (KR)
Filed on Mar. 13, 2024, as Appl. No. 18/603,852.
Application 18/603,852 is a continuation of application No. 17/117,702, filed on Dec. 10, 2020, granted, now 11,974,480.
Claims priority of application No. 10-2019-0179655 (KR), filed on Dec. 31, 2019.
Prior Publication US 2024/0224689 A1, Jul. 4, 2024
Int. Cl. H10K 59/35 (2023.01); H10K 50/15 (2023.01); H10K 50/81 (2023.01); H10K 102/00 (2023.01)
CPC H10K 59/353 (2023.02) [H10K 50/15 (2023.02); H10K 50/81 (2023.02); H10K 59/351 (2023.02); H10K 2102/351 (2023.02)] 19 Claims
OG exemplary drawing
 
1. An organic light emitting display apparatus, comprising:
a substrate including a plurality of pixels;
a transistor disposed on the substrate and including a gate electrode, a source electrode, a drain electrode and an active layer;
an over coating layer disposed on the transistor;
a plurality of organic light emitting diodes disposed on the over coating layer to correspond to the plurality of pixels;
an encapsulation layer disposed on the plurality of organic light emitting diodes and including at least an inorganic layer and at least an organic layer;
an adhesive member on the encapsulation layer; and
an encapsulation substrate on the adhesive layer,
wherein the plurality of pixels include at least a first pixel, a second pixel, a third pixel, and emit different color lights,
wherein each of the plurality of organic light emitting diodes includes:
a first electrode disposed on the over coating layer;
a light emitting portion disposed on the first electrode; and
a second electrode on the light emitting portion,
wherein the light emitting portion includes a hole transport layer,
wherein a total thickness of the hole transport layer is approximately 100 Å to 2200 Å,
wherein the light emitting portion includes a first light emitting portion including a first light emitting layer emitting blue color light,
wherein a total thickness of the first light emitting portion is approximately 400 Å to 3100 Å,
wherein a distance between a center of the first light emitting layer and a first surface of the second electrode is approximately 2500 Å to 3100 Å,
wherein the light emitting portion includes a second light emitting portion, and
wherein a total thickness of the second light emitting portion is approximately 750 Å to 1350 Å.