US 11,812,637 B2
Display device and optical inspection method for the same
Hee Young Lee, Yongin-si (KR); Eun Mi Seo, Yongin-si (KR); Gil Yeong Park, Yongin-si (KR); and Min Ju Oh, Yongin-si (KR)
Assigned to SAMSUNG DISPLAY CO., LTD., Gyeonggi-Do (KR)
Filed by SAMSUNG DISPLAY CO., LTD., Yongin-si (KR)
Filed on Apr. 12, 2021, as Appl. No. 17/227,674.
Claims priority of application No. 10-2020-0114950 (KR), filed on Sep. 8, 2020.
Prior Publication US 2022/0077429 A1, Mar. 10, 2022
Int. Cl. H10K 50/86 (2023.01); G01J 1/42 (2006.01); G01J 1/04 (2006.01); H10K 59/12 (2023.01); H10K 71/00 (2023.01); H10K 71/70 (2023.01); G02B 5/30 (2006.01)
CPC H10K 50/86 (2023.02) [G01J 1/0429 (2013.01); G01J 1/42 (2013.01); H10K 59/12 (2023.02); H10K 71/00 (2023.02); H10K 71/70 (2023.02); G01J 2001/4247 (2013.01); G01J 2001/4252 (2013.01); G02B 5/3025 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A display device comprising:
a substrate;
a display element layer disposed on the substrate, wherein the display element layer includes a light emitting element which emits light;
a polarizing film disposed on the display element layer, wherein the polarizing film includes a first polarizer having a first absorption axis extending to a first direction and a first transmission axis extending to a second direction orthogonal to the first direction; and
a first layer disposed on one surface of the polarizing film, wherein the first layer has a first phase difference,
wherein light emitted from the display element layer has a polarizing axis, and
wherein an angle between the polarizing axis of the light emitted from the display element layer and one selected from the first absorption axis and the first transmission axis is in a range of about 25 degrees to about 65 degrees.