US 11,770,949 B2
Display device and head mount display device
Sang Hwan Cho, Suwon-si (KR); Chung Sock Choi, Seoul (KR); Hyun Ho Kim, Hwaseong-si (KR); So Young Lee, Suwon-si (KR); Cheol Jang, Uiwang-si (KR); and Sun Young Jung, Suwon-si (KR)
Assigned to SAMSUNG DISPLAY CO., LTD., Gyeonggi-Do (KR)
Filed by Samsung Display Co., Ltd., Yongin-si (KR)
Filed on Nov. 30, 2020, as Appl. No. 17/107,516.
Application 17/107,516 is a continuation of application No. 16/042,731, filed on Jul. 23, 2018, granted, now 10,854,849.
Claims priority of application No. 10-2017-0121282 (KR), filed on Sep. 20, 2017.
Prior Publication US 2021/0083228 A1, Mar. 18, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. G02B 5/18 (2006.01); H10K 50/85 (2023.01); G09G 3/3208 (2016.01); G09G 3/00 (2006.01); G02B 27/42 (2006.01); H10K 50/81 (2023.01); H10K 50/844 (2023.01); H10K 50/858 (2023.01); H10K 59/122 (2023.01); G02B 27/01 (2006.01); H10K 59/35 (2023.01)
CPC H10K 50/85 (2023.02) [G02B 27/4205 (2013.01); G09G 3/001 (2013.01); G09G 3/3208 (2013.01); H10K 50/81 (2023.02); H10K 50/844 (2023.02); H10K 50/858 (2023.02); H10K 59/122 (2023.02); G02B 27/0172 (2013.01); G02B 2027/0118 (2013.01); G09G 2300/0426 (2013.01); G09G 2300/0439 (2013.01); H10K 59/352 (2023.02); H10K 59/353 (2023.02)] 20 Claims
OG exemplary drawing
 
1. A display device comprising:
a substrate;
a plurality of display elements disposed on the substrate;
a pixel definition film including a plurality of openings which overlap the plurality of display elements;
an encapsulation layer disposed on the plurality of display elements and the pixel definition film; and
a diffraction pattern layer comprising a plurality of diffraction patterns disposed on the encapsulation layer with a predetermined pitch,
wherein the plurality of diffraction patterns diffracts light emitted from the plurality of display elements in a pattern different from an arrangement pattern of the plurality of display elements,
wherein a number of light emission patterns of the light diffracted by the plurality of diffraction patterns is greater than a number of light emission patterns of the light emitted from the plurality of display elements, and
wherein the plurality of diffraction patterns does not overlap at least one opening of the plurality of openings.