Alignment film transfer printing plate and manufacturing method thereof

Patent metadata

Field	Value
Publication number	US-11815766-B2
Application number	US-202015733071-A
Country	US
Kind code	B2
Filing date	Apr 2, 2020
Priority date	Feb 12, 2020
Publication date	Nov 14, 2023
Grant date	Nov 14, 2023

Abstract

This application provides an alignment film transfer printing plate including a substrate, a first dot arranged on the substrate, and a plurality of second dots arranged around the first dot. A height of each of the second dots in a direction perpendicular to a surface of the substrate is less than or equal to a height of the first dot in the direction perpendicular to the surface of the substrate, a blocking portion is formed on an end of the first dot away from the substrate, and an area of an end surface of each of the second dots away from the substrate is less than an area of an end surface of the blocking portion away from the substrate.

First claim

What is claimed is:

1. An alignment film transfer printing plate configured to prevent an alignment film material from stacking in a blind-hole, wherein the alignment film transfer printing plate comprises a substrate, a first dot arranged on the substrate, and a plurality of second dots arranged around the first dot, a height of each of the second dots in a direction perpendicular to a surface of the substrate is less than or equal to a height of the first dot in the direction perpendicular to the surface of the substrate, a blocking portion is formed on an end of the first dot away from the substrate, and an area of an end surface of each of the second dots away from the substrate is less than an area of an end surface of the blocking portion away from the substrate, wherein an area of an end surface of the first dot close to the substrate is less than or equal to the area of the end surface of the blocking portion away from the substrate.

2. The alignment film transfer printing plate of claim 1 , wherein the first dot comprises a tapered portion connected to the blocking portion, and a cross-sectional area of the tapered portion gradually reduces along a direction of the substrate towards the blocking portion.

3. The alignment film transfer printing plate of claim 1 , wherein the end surface of the blocking portion away from the substrate has a polygonal shape.

4. The alignment film transfer printing plate of claim 1 , wherein the end surface of each of the second dots away from the substrate has a polygonal shape.

5. The alignment film transfer printing plate of claim 3 , wherein materials of the first dot and the second dots are elastic photosensitive resin materials.

6. The alignment film transfer printing plate of claim 4 , wherein materials of the first dot and the second dots are elastic photosensitive resin materials.

7. A manufacturing method of an alignment film transfer printing plate, comprising steps of:
providing the alignment film transfer printing plate of claim 1 , and coating the alignment film material on a surface of the alignment film transfer printing plate containing the first dot and the second dots;
providing an alignment substrate, and transfer printing the alignment film material to the alignment substrate using the alignment film transfer printing plate, wherein the blind-hole is provided on the alignment substrate, and the blocking portion is configured to prevent the alignment film material from entering the blind-hole; and
curing the alignment film material to form an alignment film;
wherein an area of an end surface of the first dot close to the substrate is less than or equal to the area of the end surface of the blocking portion away from the substrate.

8. The manufacturing method of the alignment film transfer printing plate of claim 7 , wherein the first dot comprises a tapered portion connected to the blocking portion, and a cross-sectional area of the tapered portion gradually reduces along a direction of the substrate towards the blocking portion.

9. The manufacturing method of the alignment film transfer printing plate of claim 7 , wherein the end surface of the blocking portion away from the substrate has a polygonal shape.

10. The manufacturing method of the alignment film transfer printing plate of claim 7 , wherein the end surface of each of the second dots away from the substrate has a polygonal shape.

11. The manufacturing method of the alignment film transfer printing plate of claim 8 , wherein materials of the first dot and the second dots are elastic photosensitive resin materials.

12. The manufacturing method of the alignment film transfer printing plate of claim 9 , wherein materials of the first dot and the second dots are elastic photosensitive resin materials.

13. The manufacturing method of the alignment film transfer printing plate of claim 7 , wherein an area of an end surface of the first dot close to the substrate is greater than the area of the end surface of the blocking portion away from the substrate, the blocking portion is configured to embed into the blind-hole.

14. The manufacturing method of the alignment film transfer printing plate of claim 7 , wherein an area of an end surface of the first dot close to the substrate is less than or equal to the area of the end surface of the blocking portion away from the substrate, the blocking portion is configured to cover the blind-hole.

Assignees

• Wuhan China Star Optoelectronics Technology Co Ltd

Inventors

• Wu Yongbo

Classifications

• H10D86/411

  characterised by materials, geometry or structure of the substrates · CPC title

• H10D86/0212

  comprising manufacture, treatment or coating of substrates · CPC title

• H10D86/60

  wherein the TFTs are in active matrices · CPC title

• G02F1/1337 Primary

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

• B29C59/00

  Surface shaping {of articles}, e.g. embossing; Apparatus therefor {(in-mould printing B29C37/0025; by using liquids B29C71/0009; by using gases without chemical reaction B29C71/009; for decorating in general B44; abrasive blasting B24C; chemical aspects C08J7/00)} · CPC title