Granted Patent B2

US 12,360,421 · App. 18/724,414 · Granted Jul 15, 2025

Inventors: Jong Sik Lee (Seoul, KR); Jin Gyeong Park (Seoul, KR); Byung Sook Kim (Seoul, KR)

Assignee: LG INNOTEK CO., LTD.

G02F1/134309G02F1/1339

Abstract

Claims (50)

1. An optical path control member comprising:

a first substrate;

a first electrode disposed on the first substrate;

a second electrode disposed on the first electrode;

a second substrate disposed on the second electrode;

a light conversion unit disposed between the first electrode and the second electrode and including a plurality of accommodating parts in which a light conversion material is disposed;

a first sealing part and a second sealing part formed in a cutting region formed by cutting the second substrate, the second electrode, and the light conversion unit and disposed extending in a first direction; and

a third sealing part and a fourth sealing part formed in the cutting region formed by cutting the second substrate, the second electrode, and the light conversion unit and disposed extending in a second direction different from the first direction, and

wherein a length of the first sealing part in the first direction is different from a length of the second sealing part in the first direction.

2. The optical path control member of claim 1 , wherein lengths of the plurality of accommodating parts change while extending in the first direction.

3. The optical path control member of claim 2 , wherein the third sealing part includes a third sealing region disposed in the cutting region and a third anchor region disposed in a respective one of the accommodating parts,

wherein the third anchor region includes a first length defined as a length in the first direction from an interface between the third sealing region and the third anchor region to an end of the third anchor region, and a second length defined as a length of its respective accommodating part in a length direction from the interface between the third sealing region and the third anchor region to the end of the third anchor region, and

wherein at least one of the first length and the second length varies according to a position of the accommodating part in which the third anchor region is disposed.

4. The optical path control member of claim 3 , wherein at least one of the first length of the third anchor region and the second length of the third anchor region varies while extending in the second direction.

5. The optical path control member of claim 4 , wherein at least one of the first length of the third anchor region and the second length of the third anchor region decreases while extending from the first sealing part toward the second sealing part.

6. The optical path control member of claim 3 , wherein the fourth sealing part includes a fourth sealing region disposed in the cutting region and a fourth anchor region disposed in a respective one of the accommodating parts,

wherein the fourth anchor region includes a first length defined as a length in the first direction from an interface between the fourth sealing region and the fourth anchor region to an end of the fourth anchor region, and a second length defined as a length of its respective accommodating part in a length direction from the interface between the fourth sealing region and the fourth anchor region to the end of the fourth anchor region, and

wherein at least one of the first length and the second length varies according to a position of the accommodating part in which the fourth anchor region is disposed.

7. The optical path control member of claim 6 , wherein at least one of the first length of the fourth anchor region and the second length of the fourth anchor region increases while extending from the first sealing part toward the second sealing part.

8. The optical path control member of claim 6 , wherein the first substrate and the second substrate include a connection region connected to an external printed circuit board, and

wherein at least one of the first length of the fourth anchor region and the second length of the fourth anchor region increases as it approaches the connection region.

9. The optical path control member of claim 6 , wherein at least one of the first and second lengths of the third anchor region and the first and second lengths of the fourth anchor region is proportional to a length of the respective accommodating part.

10. The optical path control member of claim 6 , wherein at least one of the first length of the third anchor region and the first length of the fourth anchor region is 30 μm to 1000 μm, and

wherein at least one of the second length of the third anchor region and the second length of the fourth anchor region is 50 μm to 1500 μm.

11. The optical path control member of claim 6 , wherein the first sealing part includes a first sealing region disposed in the cutting region and a first anchor region disposed in the accommodating part,

wherein the first anchor region has a first length defined as a length in the first direction from an interface of the first sealing region and the first anchor region to an end of the first anchor region, and a second length defined as a length defined as a length in the length direction of the accommodating part from the interface of the first sealing region and the first anchor region to the end of the first anchor region,

wherein the second sealing part includes a second sealing region disposed in the cutting region and a second anchor region disposed in the accommodating part,

wherein the second anchor region has a first length defined as a length in the first direction from an interface between the second sealing region and the second anchor region to an end of the second anchor region, and a second length defined as a length defined as a length in the length direction of the accommodating part from the interface between the second sealing region and the second anchor region to the end of the second anchor region,

wherein at least one of a maximum length of the first length of the first anchor region and a maximum length of the first length of the second anchor region is different from at least one of a maximum length of the first length of the third anchor region and a maximum length of the first length of the fourth anchor region, and

wherein at least one of a maximum length of the second length of the first anchor region and a maximum length of the second length of the second anchor region is different from at least one of a maximum length of the second length of the third anchor region and a maximum length of the second length of the fourth anchor region.

12. The optical path control member of claim 11 , wherein at least one of the maximum length of the first length of the first anchor region and the maximum length of the first length of the second anchor region is greater than at least one of the maximum length of the first length of the third anchor region and the maximum length of the first length of the fourth anchor region, and

wherein at least one of the maximum length of the second length of the first anchor region and the maximum length of the second length of the second anchor region is greater than at least one of the maximum length of the second length of the third anchor region and the maximum length of the second length of the fourth anchor region.

13. The optical path control member of claim 1 , wherein each of the plurality of accommodating parts includes one end and an other end,

wherein the one end of each of the plurality of accommodating parts is in contact with any one of the first sealing part and the third sealing part, and

wherein the other ends of each of the plurality of accommodating parts are in contact with any one of the second sealing part and the fourth sealing part.

14. The optical path control member of claim 1 , wherein each of the plurality of accommodating parts includes one end and an other end,

wherein the one end of each of the plurality of accommodating parts is in contact with any one of the first sealing part and the fourth sealing part, and

wherein the other ends of each of the plurality of accommodating parts are in contact with any one of the second sealing part and the third sealing part.

15. The optical path control member of claim 1 , wherein the first sealing part includes a first outer surface overlapping the second substrate, the second electrode, and the light conversion part in the second direction, and,

wherein the second substrate includes a first side end positioned closest to the first outer surface, and

wherein the first outer surface is provided further outside than the first side end based on the second direction.

16. The optical path control member of claim 1 , wherein the second sealing part includes a second outer surface overlapping the second substrate, the second electrode, and the light conversion part in the second direction, and,

wherein the second substrate includes a second side end positioned closest to the second outer surface, and

wherein the second outer surface is provided further inside the second side end based on the second direction.

17. The optical path control member of claim 1 , wherein at least one of the first sealing part, the second sealing part, the third sealing part, and the fourth sealing part includes a region whose width is narrowed in a direction from the second substrate toward the first substrate.

18. The optical path control member of claim 1 , wherein the second direction is perpendicular to the first direction.

19. The optical path control member of claim 1 , wherein the second direction has a predetermined inclination with respect to a direction perpendicular to the first direction.

20. A display device comprising:

a panel including at least one of a display panel or a touch panel; and

the optical path control member of claim 1 disposed on or under the panel.

Assignments (1)

Priority Claims (2)

Continuity (1)

References Cited (19)