US 12,262,576 B2
Display device having stack of plurality of light emitting layers, wavelength conversion pattern, and reflective layer
Kyoung Won Park, Seoul (KR); Sung Woon Kim, Yongin-si (KR); Soo Dong Kim, Hwaseong-si (KR); Jin Won Kim, Suwon-si (KR); and Min Ki Nam, Incheon (KR)
Assigned to SAMSUNG DISPLAY CO., LTD., Yongin-si (KR)
Filed by Samsung Display Co. Ltd., Yongin-si (KR)
Filed on Jan. 2, 2024, as Appl. No. 18/402,294.
Application 18/402,294 is a continuation of application No. 17/884,142, filed on Aug. 9, 2022, granted, now 11,903,229.
Application 17/884,142 is a continuation of application No. 17/148,756, filed on Jan. 14, 2021, granted, now 11,444,258, issued on Sep. 13, 2022.
Application 17/148,756 is a continuation of application No. 16/507,954, filed on Jul. 10, 2019, granted, now 10,916,722, issued on Feb. 9, 2021.
Claims priority of application No. 10-2018-0110906 (KR), filed on Sep. 17, 2018.
Prior Publication US 2024/0138176 A1, Apr. 25, 2024
Prior Publication US 2024/0237386 A9, Jul. 11, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. H10K 50/13 (2023.01); H01L 27/146 (2006.01); H10K 50/125 (2023.01); H10K 50/81 (2023.01); H10K 50/82 (2023.01); H10K 50/858 (2023.01); H10K 59/30 (2023.01); H10K 59/32 (2023.01); H10K 59/35 (2023.01); H10K 59/38 (2023.01)
CPC H10K 50/13 (2023.02) [H01L 27/14621 (2013.01); H10K 50/125 (2023.02); H10K 50/81 (2023.02); H10K 50/82 (2023.02); H10K 50/858 (2023.02); H10K 59/30 (2023.02); H10K 59/32 (2023.02); H10K 59/35 (2023.02); H10K 59/38 (2023.02)] 19 Claims
OG exemplary drawing
 
1. A display device, comprising:
a substrate including a first light emitting region;
a first electrode disposed on the substrate, the first electrode overlapping the first light emitting region;
a layer on the first electrode, the layer including a first light emitting layer, a second light emitting layer overlapping the first light emitting layer, and a third light emitting layer overlapping the first light emitting layer and the second light emitting layer;
a second electrode on the layer;
a wavelength conversion pattern on the second electrode, overlapping the first light emitting region and wavelength-converting blue light into green light;
a first color filter on the wavelength conversion pattern; and
an inorganic layer disposed between the wavelength conversion pattern and the first color filter, wherein
any one of the first light emitting layer, the second light emitting layer, and the third light emitting layer emits green light,
other two of the first light emitting layer, the second light emitting layer, and the third light emitting layer emit blue light, and
the wavelength conversion pattern comprises quantum dots and scatterers.