Light route control member and display having the same

Patent metadata

Field	Value
Publication number	US-12353089-B2
Application number	US-202017755659-A
Country	US
Kind code	B2
Filing date	Oct 20, 2020
Priority date	Nov 5, 2019
Publication date	Jul 8, 2025
Grant date	Jul 8, 2025

Abstract

An optical path control member according to an embodiment includes: a base substrate defining a first direction and a second direction; and a pattern part disposed on the base substrate, wherein the pattern part includes a plurality of curved regions, and the pattern part extends with a curvature of 0.01 mm to 0.03 mm.

First claim

The invention claimed is:

1. A light route control member comprising:
a base substrate; and
a plurality of pattern portions on the base substrate,
wherein the base substrate comprises a first direction that is a longitudinal direction of the base substrate, a second direction that is a width direction of the base substrate, a third direction that is a right diagonal direction between the first direction and the second direction, and a fourth direction that is a left diagonal direction between the first direction and the second direction,
wherein each of the plurality of pattern portions comprises a first variation region that changes from the second direction to the third direction, a second variation region that changes from the third direction to the second direction, a third variation region that changes from the second direction to the fourth direction, and a fourth variation region that changes from the fourth direction to the second direction,
wherein the plurality of pattern portions include a first pattern portion and a second pattern portion disposed adjacent to each other in the first direction, and
wherein the fourth variation region of the first pattern portion is in direct contact with the second variation region of the second pattern portion.

2. The light route control member of claim 1 , wherein each of the plurality of pattern portions extends while having a curvature of 0.01 mm to 0.03 mm.

3. The light route control member of claim 1 , wherein the first variation region, the second variation region, the third variation region, and the fourth variation region each has a curvature of 0.01 mm to 0.03 mm.

4. The light route control member of claim 1 , comprising a resin layer on the base substrate,
wherein the resin layer includes an intaglio part and an embossed part,
wherein the plurality of pattern portions are disposed inside the intaglio part,
wherein a height of each the plurality of pattern portions corresponds to a depth of the intaglio part.

5. The light route control member of claim 4 , wherein each of the plurality of pattern portions is disposed at a height ranging from 90% to 100% of a maximum depth of the intaglio part.

6. The light route control member of claim 1 , wherein the plurality of pattern portions include a third pattern portion adjacent to the second pattern portion in the first direction,
wherein the second pattern portion is arranged between the first pattern portion and the third pattern portion, and
wherein the fourth variation region of the second pattern portion is in direct contact with the second variation region of the third pattern portion.

7. The light route control member of claim 6 , wherein the plurality of pattern portions are integrally formed.

8. The light route control member of claim 7 , wherein each of the first to third pattern portions includes a plurality of first variation regions, a plurality of second variation regions, a plurality of third variation regions, and a plurality of fourth variation regions spaced apart in the second direction,
wherein each of the plurality of second variation regions of the second pattern portion is in direct contact with each of the plurality of fourth variation regions of the first pattern portion, respectively, and
wherein each of the plurality of fourth variation regions of the second pattern portion is in direct contact with each of the plurality of second variation regions of the third pattern portion, respectively.

9. The light route control member of claim 6 , wherein a pitch between adjacent pattern portions of the plurality of pattern portions is 1 μm to 30 μm, and
wherein a height of each of the plurality of pattern portions is 20 μm to 120 μm.

10. The light route control member of claim 6 , wherein a width of each the plurality of pattern portions is 1 μm to 25 μm.

11. The light route control member of claim 6 , wherein a width of each the plurality of pattern portions and a height of each the plurality of pattern portions satisfy a ratio of 1:9 to 1:11.

12. A display device comprising:
a display panel; and
a light route control member disposed on the display panel,
wherein the light route control member comprises:
a base substrate; and
a plurality of pattern portions on the base substrate,
wherein the base substrate comprises a first direction that is a longitudinal direction of the base substrate, a second direction that is a width direction of the base substrate, a third direction that is a right diagonal direction between the first direction and the second direction, and a fourth direction that is a left diagonal direction between the first direction and the second direction,
wherein each of the plurality of pattern portions comprises a first variation region that changes from the second direction to the third direction, a second variation region that changes from the third direction to the second direction, a third variation region that changes from the second direction to the fourth direction, and a fourth variation region that changes from the fourth direction to the second direction,
wherein the plurality of pattern portions include a first pattern portion and a second pattern portion disposed adjacent to each other in the first direction, and
wherein the fourth variation region of the first pattern portion is in direct contact with the second variation region of the second pattern portion.

13. The display device of claim 12 , wherein the first variation region, the second variation region, the third variation region, and the fourth variation region each has a curvature of 0.01 mm to 0.03 mm.

14. The display device of claim 12 , comprising a resin layer on the base substrate,
wherein the resin layer includes an intaglio part and an embossed part,
wherein the plurality of pattern portions are disposed inside the intaglio part,
wherein a height of each of the plurality of pattern portions corresponds to a depth of the intaglio part.

15. The display device of claim 14 , wherein each the plurality of pattern portions is disposed at a height ranging from 90% to 100% of a maximum depth of the intaglio part.

16. The display device of claim 12 , wherein the plurality of pattern portions include a third pattern portion adjacent to the second pattern portion in the first direction,
wherein the second pattern portion is arranged between the first pattern portion and the third pattern portion, and
wherein the fourth variation region of the second pattern portion is in direct contact with the second variation region of the third pattern portion.

17. The display device of claim 16 , wherein a pitch of adjacent pattern portions of the plurality of pattern portions is 1 μm to 30 μm, and
wherein a height of each of the plurality of pattern portions is 20 μm to 120 μm.

18. The display device of claim 16 , wherein each of the first to third pattern portions includes a plurality of first variation regions, a plurality of second variation regions, a plurality of third variation regions, and a plurality of fourth variation regions spaced apart in the second direction,
wherein each of the plurality of second variation regions of the second pattern portion is in direct contact with each of the plurality of fourth variation regions of the first pattern portion, respectively, and
wherein each of the plurality of fourth variation regions of the second pattern portion is in direct contact with each of the plurality of second variation regions of the third pattern portion, respectively.

19. The display device of

Assignees

• Lg Innotek Co Ltd

Inventors

• Jun Sung Gon

Classifications

• G02B2207/123

  Optical louvre elements, e.g. for directional light blocking · CPC title

• G02B26/08 Primary

  for controlling the direction of light (in light guides G02B6/35) · CPC title

• G02F1/1335

  Structural association of cells with optical devices, e.g. polarisers or reflectors · CPC title

• G02F1/133509 Primary

  Filters, e.g. light shielding masks · CPC title

• G02B2027/0118

  comprising devices for improving the contrast of the display / brillance control visibility · CPC title