US 12,341,946 B2
Stereoscopic image display device
Nobuhide Yamada, Yokohama (JP)
Assigned to KABUSHIKI KAISHA TOSHIBA, Tokyo (JP)
Filed by KABUSHIKI KAISHA TOSHIBA, Tokyo (JP)
Filed on Mar. 14, 2022, as Appl. No. 17/654,678.
Claims priority of application No. 2021-156152 (JP), filed on Sep. 24, 2021.
Prior Publication US 2023/0097546 A1, Mar. 30, 2023
Int. Cl. H04N 13/302 (2018.01); G03H 1/22 (2006.01); H04N 13/324 (2018.01); H04N 13/398 (2018.01)
CPC H04N 13/302 (2018.05) [G03H 1/2294 (2013.01); H04N 13/324 (2018.05); H04N 13/398 (2018.05)] 8 Claims
OG exemplary drawing
 
1. A stereoscopic image display device, comprising:
a three-dimensional pixel unit including a plurality of pixel cells arranged in a three-dimensional array, and including X-direction pixel selection lines, Y-direction pixel selection lines, and Z-direction pixel-layer selection lines, the plurality of pixel cells being formed of an optical material having electrically changeable optical characteristics, being arranged in a three-dimensional manner, and being electrically connected with transparent wiring pattems;
a backlight configured to emit illumination light to the three-dimensional pixel unit; and
an arithmetic/control circuit configured to:
select pixel cells of the plurality of pixel cells via the wiring patterns based on input three-dimensional image data, by individually controlling the X-direction pixel selection lines, the Y-direction pixel selection lines, and the Z-direction pixel-layer selection lines;
generate a three-dimensional image using the selected pixel cells in the three-dimensional pixel unit to visualize the three-dimensional image from a surface of the three-dimensional pixel unit by changing a refractive index or a transmittance of the selected pixel cells according to a state of voltage application to the selected pixel cells; and
cause the three-dimensional pixel unit to function as a transmissive hologram.