US 12,449,685 B2
View-angle control device and display device
Takeo Koito, Tokyo (JP)
Assigned to Japan Display Inc., Tokyo (JP)
Filed by Japan Display Inc., Tokyo (JP)
Filed on Sep. 29, 2023, as Appl. No. 18/375,081.
Application 18/375,081 is a continuation of application No. 17/885,694, filed on Aug. 11, 2022, granted, now 11,774,786.
Claims priority of application No. 2021-132373 (JP), filed on Aug. 16, 2021.
Prior Publication US 2024/0027802 A1, Jan. 25, 2024
Int. Cl. G02F 1/13 (2006.01); G02F 1/1335 (2006.01); G02F 1/1343 (2006.01); G02F 1/1362 (2006.01)
CPC G02F 1/1323 (2013.01) [G02F 1/133512 (2013.01); G02F 1/133528 (2013.01); G02F 1/134309 (2013.01); G02F 1/136209 (2013.01); G02F 1/1343 (2013.01); G09G 2320/068 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A view-angle control device comprising:
a drive layer in which light-transmitting regions and switchable regions are alternately arranged in one direction, each of the light-transmitting regions being configured to transmit light, and each of the switchable regions being switched between a light-transmitting state and a light-blocking state due to an orientation of liquid crystal molecules;
a plurality of optical member layers, the drive layer and the optical member layers being stacked in a stacking direction; and
a pair of polarization layers facing each other with the drive layer interposed therebetween,
wherein
the drive layer includes branch electrodes extending along an extending direction of the switchable regions,
a polarization direction of light that can transmit through the polarization layers intersects the extending direction of the branch electrodes, and
in the drive layer, each of the switchable regions is brought into the light-blocking state by applying an OFF potential to the branch electrodes provided in the light-transmitting regions and applying an ON potential to the branch electrodes provided in the switchable region.