US 12,219,805 B2
Display apparatus
Taeyong Eom, Suwon-si (KR); Yeri Jeong, Suwon-si (KR); and Youngbae Jung, Cheonan-si (KR)
Assigned to Samsung Display Co., Ltd., Yongin-si (KR)
Filed by Samsung Display Co., Ltd., Yongin-si (KR)
Filed on Sep. 22, 2023, as Appl. No. 18/472,797.
Application 18/472,797 is a continuation of application No. 17/552,613, filed on Dec. 16, 2021, granted, now 11,800,745.
Application 17/552,613 is a continuation of application No. 16/561,712, filed on Sep. 5, 2019, granted, now 11,233,224, issued on Jan. 25, 2022.
Claims priority of application No. 10-2018-0117968 (KR), filed on Oct. 4, 2018.
Prior Publication US 2024/0015998 A1, Jan. 11, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. H10K 50/858 (2023.01); H10K 50/80 (2023.01); H10K 50/84 (2023.01)
CPC H10K 50/858 (2023.02) [H10K 50/84 (2023.02); H10K 50/868 (2023.02)] 16 Claims
OG exemplary drawing
 
1. A display apparatus comprising a display module configured to define a display surface on a plane,
the display module comprising:
a plurality of light emitting elements configured to display an image on the display surface;
a cover layer configured to cover the plurality of light emitting elements; and
a pattern layer on the cover layer and having a same refractive index as the cover layer,
wherein the pattern layer comprises a plurality of diffraction patterns,
the plurality of diffraction patterns comprises:
first patterns, each of which has a first width; and
second patterns, each of which has a second width greater than the first width,
each of the first patterns and the second patterns has a plurality of hole shapes passing through the pattern layer, and the first patterns and the second patterns have a constant interval configured to constructively interfere with at least a portion of incident light generated by the plurality of light emitting elements, and
light from a light emitting element of the plurality of light emitting elements comprises a first sub light incident on a first pattern of the first patterns and a second sub light incident on a second pattern of the second patterns, and a difference in light paths of the first sub light and the second sub light is proportional to a wavelength of the light, such that the first sub light and the second sub light are constructively interfered.