	US 12,072,567 B2
	Stacked display apparatus comprising first and second display panels and having a ratio of a first and a second maximum spatial frequency that is outside a predetermined range and image providing method
Jaehee Kwak, Suwon-si (KR); Jaesung Lee, Suwon-si (KR); Seyong Kwon, Suwon-si (KR); Youngjin Yoon, Suwon-si (KR); Kyungmin Lim, Suwon-si (KR); Kangwon Jeon, Suwon-si (KR); and Bora Jin, Suwon-si (KR)
Assigned to SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR)
Appl. No. 17/432,804
Filed by SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR)
PCT Filed Aug. 3, 2021, PCT No. PCT/KR2021/010098 § 371(c)(1), (2) Date Aug. 20, 2021, PCT Pub. No. WO2022/039415, PCT Pub. Date Feb. 24, 2022.
Claims priority of application No. 10-2020-0105638 (KR), filed on Aug. 21, 2020.
Prior Publication US 2023/0136336 A1, May 4, 2023
Int. Cl. G02F 1/1335 (2006.01); G02F 1/13357 (2006.01); G09G 3/3208 (2016.01)

CPC G02F 1/133504 (2013.01) [G02F 1/1336 (2013.01); G09G 3/3208 (2013.01); G09G 2300/023 (2013.01); G09G 2320/02 (2013.01)]

15 Claims

1. A stacked display apparatus comprising:

a first display panel in a form of a first aperture shape; and

a second display panel in a form of a second aperture shape that is different from the first aperture shape, the second display panel being stacked on the first display panel,

wherein a ratio of a first maximum spatial frequency of the first aperture shape and a second maximum spatial frequency of the second aperture shape is outside a predetermined range,

wherein the first maximum spatial frequency is obtained by analyzing, by performing a fast Fourier transform method, a frequency component of first data on the first aperture shape obtained through measuring a first optical profile of the first display panel, and

wherein the second maximum spatial frequency is obtained by analyzing by performing a fast Fourier transform method, a frequency component of second data on the second aperture shape obtained through measuring a second optical profile of the second display panel.