公开(公告)号：US20250031501A1

公开(公告)日：2025-01-23

申请号：US18907681

申请日：2024-10-07

Applicant: TOPPAN HOLDINGS INC.

Inventor： Atsushi YAMAUCHI ,  Hiroyuki MICHI ,  Mitsuhiro OKAMURA ,  Saori MATSUYAMA ,  Miho HAFURI

IPC: H01L33/60 ,  H01L25/16 ,  H01L33/48 ,  H01L33/50

Abstract: A display device includes a substrate, a barrier layer, light-emitting diodes, and lenses. The barrier layer is provided on the substrate. The barrier layer has through holes. The light-emitting diodes are disposed in the through holes. The lenses is disposed at positions of the through holes. Each of the lenses has a first surface and a second surface, the second surface is a convex surface, and height of a top of the convex surface based on the substrate is greater than a height of an upper surface of the barrier layer based on the substrate. The first surface is opposed to the substrate with the light-emitting diode therebetween. The second surface is a back of the first surface.

公开(公告)号：US20250035999A1

公开(公告)日：2025-01-30

申请号：US18911302

申请日：2024-10-10

Applicant: TOPPAN HOLDINGS INC.

Inventor： Tetsushi YOSHIDA ,  Katsuhito SAKAMOTO ,  Hiroyuki MICHI

IPC: G02F1/137 ,  G02F1/1343 ,  G02F1/1347

Abstract: A light control device includes two light control units each having a light control sheet reversibly changeable between a transparent state and an opaque state, one light control sheet overlapping another light control sheet. The light control device has a state in which the light control sheets are simultaneously opaque, the light control sheet includes a transparent polymer layer having voids, and a liquid crystal composition including a liquid crystal compound and a dichroic dye. The voids being filled with the liquid crystal composition. An absorbance difference, which is a value obtained by subtracting an average absorbance of the liquid crystal composition from an absorbance of the light control sheets in the opaque state, is 0.4 or greater.