Apparatus for manufacturing alignment layer, and method of manufacturing liquid crystal display device by using the same

Patent metadata

Field	Value
Publication number	US-9678385-B2
Application number	US-201514985377-A
Country	US
Kind code	B2
Filing date	Dec 30, 2015
Priority date	Apr 29, 2015
Publication date	Jun 13, 2017
Grant date	Jun 13, 2017

Abstract

An apparatus for manufacturing an alignment layer includes: a dispenser which supplies an alignment material; an anilox roll, onto which the alignment material supplied from the dispenser is applied; a printing roll which is engaged and rotated with the anilox roll; and a resin plate attached to an outer peripheral surface of the printing roll, where the resin plate receives the alignment material applied onto the anilox roll and prints the alignment material to a targeted substrate, in which the resin plate comprises a first area and a second area surrounding the first area, first convex portions and first concave portions are disposed in the first area, second convex portions and second concave portions are disposed in the second area, and an area of each second convex portion is larger than an area of each first convex portion.

First claim

What is claimed is:

1. An apparatus for manufacturing an alignment layer, the apparatus comprising:
a dispenser which supplies an alignment material;
an anilox roll, onto which the alignment material supplied from the dispenser is applied;
a printing roll which is engaged and rotated with the anilox roll; and
a resin plate attached to an outer peripheral surface of the printing roll, wherein the resin plate receives the alignment material applied onto the anilox roll and prints the alignment material to a targeted substrate,
wherein the resin plate comprises:
a first area and a second area surrounding the first area,
a plurality of first convex portions and a plurality of first concave portions are disposed in the first area,
a plurality of second convex portions and a plurality of second concave portions are disposed in the second area, and
an area of each second convex portion is larger than an area of each first convex portion when viewed from a top view.

2. The apparatus of claim 1 , wherein the area of each second convex portion is larger than the area of each first convex portion by about 1.25 times to about 2.2 times.

3. The apparatus of claim 2 , wherein
the first convex portions are connected with the first concave portions, and
the second convex portions are connected with the second concave portions.

4. The apparatus of claim 3 , wherein a sum of a diameter of each first convex portion and a diameter of each first concave portion is equal to about a sum of a diameter of each second convex portion and a diameter of each second concave portion.

5. The apparatus of claim 4 , wherein
the diameter of each second convex portion is larger than the diameter of each first convex portion, and
a height of each second convex portion is equal to about a height of each first convex portion.

6. The apparatus of claim 5 , wherein
the diameter of each first concave portion is larger than the diameter of each second concave portion, and
a depth of each first concave portion is equal to about a depth of each second concave portion.

7. The apparatus of claim 1 , further comprising:
a doctor roll which is engaged and rotated with the anilox roll, wherein the doctor roll uniformly spreads the alignment material applied onto the anilox roll; and
a printing table, on which the targeted substrate is seated.

8. A method of manufacturing a liquid crystal display device, the method comprising:
providing an alignment layer on a surface of a first substrate, on which a display area for displaying an image and a peripheral area surrounding the display area are defined, using an apparatus for manufacturing the alignment layer;
bonding a second substrate, on which the alignment layer is formed, and the first substrate; and
providing a liquid crystal layer between the first substrate and the second substrate,
wherein the apparatus for manufacturing the alignment layer comprises:
a dispenser which supplies an alignment material;
an anilox roll, onto which the alignment material supplied from the dispenser is applied;
a printing roll which is engaged and rotated with the anilox roll;
a resin plate attached to an outer peripheral surface of the printing roll, wherein the resin plate receives the alignment material applied onto the anilox roll and prints the alignment material to a surface of the first substrate; and
a printing table, on which the first substrate is seated, and

wherein the resins plate comprises:
a first area and a second area surrounding the first area,
a plurality of first convex portions and a plurality of concave portions are disposed in the first area,
a plurality of second convex portions and a plurality of second concave portions are disposed in the second area, and
an area of each second convex portion is larger than an area of each first convex portion when viewed from a top view.

9. The method of claim 8 , wherein the forming the alignment layer on the surface of the first substrate comprises:
seating the first substrate on the printing table;
applying the alignment material onto the anilox roll;
transferring the alignment material applied onto the anilox roll to the resin plate;
printing the alignment material transferred to the resin plate to the surface of the first substrate;
uniformly spreading the printed alignment material on the first substrate; and
curing the alignment material printed on the first substrate.

10. The method of claim 9 , wherein
the first area corresponds to the display area, and
the second area corresponds to the peripheral area.

11. The method of claim 10 , wherein
the transferring the alignment material applied onto the anilox roll to the resin plate comprises transferring the alignment material applied onto the anilox roll to the plurality of first concave portions and the plurality of second concave portions, and
wherein an amount of the alignment material transferred to each first concave portion is larger than an amount of the alignment material transferred to each second concave portion.

12. The method of claim 11 , wherein the printing the alignment material transferred to the resin plate to the surface of the first substrate comprises:
printing the alignment material positioned in the plurality of first concave portions on the display area; and
printing the alignment material positioned in the plurality of second concave portions on the peripheral area.

13. The method of claim 12 , wherein
the alignment material printed on the surface of the first substrate is in a drop shape, and
a size of the drop shape of the alignment material printed on the display area is larger than a size of the drop shape of the alignment material printed on the peripheral area.

14. The method of claim 13 , wherein the area of each of the second convex portions is larger than the area of each of the first convex portion by about 1.25 times to about 2.2 times.

15. The method of claim 14 , wherein
the first convex portions are connected with the first concave portions, and
the second convex portions are connected with the second concave portion.

16. The method of claim 15 , wherein a sum of a diameter of each first convex portion and a diameter of each first concave portion is equal to about a sum of a diameter of each second convex portion and a diameter of each second concave portion.

17. The method of claim 16 , wherein
the diameter of each second convex portion is larger than the diameter of each first convex portion, and
a height of each second convex portion is equal to about a height of each first convex portion.

18. The method of claim 17 , wherein
the diameter of each first concave portion is larger than the diameter of each second concave portion, and
a depth of each first concave portion is larger than a depth of each second concave portion.

Assignees

• Samsung Display Co Ltd

Inventors

• Kim Tae Ho
• Joo Sun-Kyu
• Jung Ji-Yoon

Classifications

• G02F1/1303

  Apparatus specially adapted to the manufacture of LCDs · CPC title

• B29D16/00

  Producing articles with corrugations (B29D23/18 takes precedence) · CPC title

• G02F1/1337 Primary

  Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers · CPC title