US 11,789,271 B2
Display apparatus for providing expanded viewing window
Jong-Young Hong, Suwon-si (KR); Hongseok Lee, Seoul (KR); and Young Kim, Yongin-si (KR)
Assigned to SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR)
Filed by SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR)
Filed on Nov. 30, 2020, as Appl. No. 17/107,109.
Claims priority of application No. 10-2020-0066675 (KR), filed on Jun. 2, 2020.
Prior Publication US 2021/0373337 A1, Dec. 2, 2021
Int. Cl. G02B 27/01 (2006.01); G02B 27/44 (2006.01); H04N 9/31 (2006.01); G02B 30/40 (2020.01); G02B 27/00 (2006.01); G02B 27/42 (2006.01); G02B 5/18 (2006.01); F21V 8/00 (2006.01)
CPC G02B 27/0172 (2013.01) [G02B 5/18 (2013.01); G02B 6/0016 (2013.01); G02B 6/0026 (2013.01); G02B 27/0081 (2013.01); G02B 27/4205 (2013.01); G02B 27/44 (2013.01); G02B 30/40 (2020.01); H04N 9/3152 (2013.01); G02B 5/1819 (2013.01); G02B 2005/1804 (2013.01); G02B 2027/0123 (2013.01); G02B 2027/0125 (2013.01); G02B 2027/0174 (2013.01); G02B 2027/0178 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A display apparatus comprising:
a light guide plate comprising an input coupler and an output coupler; and
an image providing apparatus facing the input coupler and configured to provide an image to the input coupler,
wherein the input coupler comprises a plurality of sub input couplers configured to propagate an image provided from the image providing apparatus at different angles in the light guide plate,
wherein the image providing apparatus comprises:
a plurality of spatial light modulators respectively corresponding to the plurality of sub input couplers, the plurality of spatial light modulators being separated from each other; and
a plurality of light sources configured to respectively provide coherent illumination light to the plurality of spatial light modulators,
wherein each light source of the plurality of light sources is configured to provide illumination light of a color different from the color of each other light source of the plurality of light sources, and
wherein each spatial light modulator of the plurality of spatial light modulators comprises a plurality of pixels two-dimensionally arranged and provides a plurality of images having different viewpoints to the respective input coupler at different incidence angles using a time division method.