US 12,298,718 B2
Hologram display device and method of driving the same
Sang-Ho Kim, Gwangmyeong-si (KR); Dukho Lee, Seoul (KR); Byungchoon Yang, Seoul (KR); Byoungho Lee, Seoul (KR); and Jaebum Cho, Seoul (KR)
Assigned to SAMSUNG DISPLAY CO., LTD., Yongin-si (KR); and SEOUL NATIONAL UNIVERSITY R & DB FOUNDATION, Seoul (KR)
Filed by Samsung Display Co., LTD., Yongin-si (KR); and Seoul National University R&DB Foundation, Seoul (KR)
Filed on Apr. 28, 2021, as Appl. No. 17/242,723.
Claims priority of application No. 10-2020-0073707 (KR), filed on Jun. 17, 2020.
Prior Publication US 2021/0397130 A1, Dec. 23, 2021
Int. Cl. G03H 1/22 (2006.01); G03H 1/08 (2006.01); G03H 1/16 (2006.01)
CPC G03H 1/2294 (2013.01) [G03H 1/08 (2013.01); G03H 1/16 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A hologram display device comprising:
a light generator that generates light;
a spatial light modulator that forms an interference pattern to interfere with the light; and
a controller that provides interference data to the spatial light modulator to form the interference pattern, wherein
the spatial light modulator comprises:
a first area in which pixels are arranged in a first pattern that includes pixels in only odd-numbered pixel rows of the spatial light modulator; and
a second area in which pixels are arranged in a second pattern different from the first pattern, the second pattern including pixels in only even-numbered pixel rows of the spatial light modulator, and
the controller comprises:
a data generator that generates first interference data for the first area and second interference data for the second area;
a compensator that generates:
first correction data based on the first interference data; and
second correction data by correcting the second interference data using a first difference value corresponding to a difference in position between pixels of a same color in the first pattern and the second pattern; and
an output unit that generates the interference data based on the first correction data and the second correction data.