US 11,854,443 B2
3D holographic display device and operating method of the same
Young Kim, Yongin-si (KR); Geunwoo Ko, Yongin-si (KR); Minsu Kim, Ansan-si (KR); Geeyoung Sung, Daegu (KR); Dongyeoul Lee, Suwon-si (KR); Sangbum Lee, Hwaseong-si (KR); Jonghyun Lee, Suwon-si (KR); Hongseok Lee, Seoul (KR); Punjae Choi, Yongin-si (KR); and Jong-Young Hong, Suwon-si (KR)
Assigned to SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR)
Filed by SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR)
Filed on Oct. 13, 2021, as Appl. No. 17/500,098.
Claims priority of application No. 10-2021-0024232 (KR), filed on Feb. 23, 2021.
Prior Publication US 2022/0270525 A1, Aug. 25, 2022
Int. Cl. G09G 3/32 (2016.01); G02B 30/34 (2020.01); G03H 1/22 (2006.01); G09G 3/00 (2006.01)
CPC G09G 3/001 (2013.01) [G02B 30/34 (2020.01); G03H 1/2205 (2013.01); G03H 1/2294 (2013.01); G09G 3/32 (2013.01); G03H 2222/34 (2013.01); G09G 2320/064 (2013.01); G09G 2330/08 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A three-dimensional holographic display device comprising:
a light emitting diode (LED) array comprising a plurality of light sources, wherein the plurality of light sources comprise a plurality of light source sets, each of the plurality of light source sets comprising at least two light sources among the plurality of light sources;
a lens configured to refract light incident from the LED array;
a spatial light modulator (SLM) configured to modulate light incident from the lens; and
a processor configured to:
control the plurality of light source sets in a unit of light source set to sequentially output light according to a preset repeating pattern;
generate a plurality of holographic signals each comprising depth information adjusted according to an arrangement location of each of the plurality of light source sets in the LED array; and
for each of the plurality of light source sets, control the SLM to modulate the light based on a holographic signal corresponding to a light source set of the plurality of light source sets,
wherein the LED array changes a light source set that outputs light at a cycle of at least 1 MHz.