US 12,345,982 B2
Display device
Tenfu Nakamura, Tokyo (JP); Kentaro Okuyama, Tokyo (JP); and Kojiro Ikeda, Tokyo (JP)
Assigned to Japan Display Inc., Tokyo (JP)
Filed by JAPAN DISPLAY INC., Tokyo (JP)
Filed on Jun. 28, 2024, as Appl. No. 18/758,863.
Application 18/758,863 is a continuation of application No. 18/224,401, filed on Jul. 20, 2023, granted, now 12,025,881.
Application 18/224,401 is a continuation of application No. PCT/JP2022/001739, filed on Jan. 19, 2022.
Claims priority of application No. 2021-008035 (JP), filed on Jan. 21, 2021.
Prior Publication US 2024/0353712 A1, Oct. 24, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. G02F 1/13357 (2006.01); G02F 1/1334 (2006.01); G02F 1/1335 (2006.01); G02F 1/1362 (2006.01); H10D 86/40 (2025.01); H10D 86/60 (2025.01)
CPC G02F 1/133615 (2013.01) [G02F 1/1334 (2013.01); G02F 1/133616 (2021.01); G02F 1/136286 (2013.01); H10D 86/441 (2025.01); H10D 86/60 (2025.01)] 20 Claims
OG exemplary drawing
 
1. A display device comprising:
a first substrate comprising a first transparent substrate, a plurality of first wiring lines aligned along a first direction and extending in a second direction intersecting the first direction, switching elements electrically connected to the first wiring lines, respectively and pixel electrodes electrically connected to the switching elements, respectively;
a second substrate comprising a second transparent substrate and a common electrode opposing the pixel electrodes;
a liquid crystal layer held between the first substrate and the second substrate and containing polymers and liquid crystal molecules;
a plurality of light emitting elements aligned along the first direction; and
a light guide element comprising a third transparent substrate including a main surface and a side surface opposing the plurality of light emitting elements, and a transparent layer disposed on the main surface and having a refractive index lower than a refractive index of the third transparent substrate, wherein
the third transparent substrate is bonded to the first transparent substrate or the second transparent substrate while interposing the transparent layer therebetween,
the transparent layer comprises a plurality of strip portions aligned along the first direction and extending in the second direction,
the strip portions include a first end portion on a side opposing the light emitting elements, a second end portion on an opposite side to the first end portion, and a middle portion between the first end portion and the second end portion,
the first end portion has a first width greater than a width of the middle portion,
the second end portion has a second width greater than the width of the middle portion, and
one of the plurality of first wiring lines overlaps a corresponding one of the plurality of strip portions.