US 11,895,868 B2
Organic light emitting diode display device
Jungbae Song, Seongnam-si (KR)
Assigned to Samsung Display Co., Ltd., Yongin-si (KR)
Filed by Samsung Display Co., Ltd., Yongin-si (KR)
Filed on Nov. 14, 2021, as Appl. No. 17/525,948.
Application 17/525,948 is a continuation of application No. 16/912,589, filed on Jun. 25, 2020, granted, now 11,177,463.
Application 16/912,589 is a continuation of application No. 15/612,710, filed on Jun. 2, 2017, granted, now 10,720,607, issued on Jul. 21, 2020.
Claims priority of application No. 10-2017-0015085 (KR), filed on Feb. 2, 2017.
Prior Publication US 2022/0102686 A1, Mar. 31, 2022
Int. Cl. H10K 50/858 (2023.01); H10K 50/852 (2023.01); H10K 50/844 (2023.01); H10K 50/115 (2023.01); H10K 50/86 (2023.01); H10K 59/38 (2023.01); H10K 102/00 (2023.01)
CPC H10K 50/858 (2023.02) [H10K 50/8445 (2023.02); H10K 50/852 (2023.02); H10K 50/115 (2023.02); H10K 50/865 (2023.02); H10K 59/38 (2023.02); H10K 2102/351 (2023.02)] 28 Claims
OG exemplary drawing
 
1. An organic light emitting diode (OLED) display, comprising:
a substrate;
a plurality of pixels including a plurality of light emitting layers between a plurality of lower electrodes and an upper electrode on the substrate, wherein the plurality of light emitting layers configured to emit a first color light;
an encapsulation layer on the upper electrode, the thin film encapsulation layer including a first inorganic layer, a second inorganic layer, and an organic layer;
a pixel defining layer on the substrate, the pixel defining layer partially exposing the lower electrodes;
a conversion layer configured to receive the first color light from the plurality of light emitting layers and convert the first color light to a light having a different color, the conversion layer comprising a quantum dots layer disposed on the encapsulation layer and a color filter layer disposed on the quantum dots layer,
wherein the first inorganic layer has a first refractive index (n1) and a first thickness,
wherein the second inorganic layer having has a second refractive index (n2) different from the first refractive index (n1) and a second thickness different from the first thickness; and
wherein the quantum dots layer comprise:
a plurality of areas disposed respectively corresponding to a plurality of sub-pixels, and
a first black matrix disposed between the plurality of areas.