Method of manufacturing liquid crystal display device

Patent metadata

Field	Value
Publication number	US-9946005-B2
Application number	US-201715446964-A
Country	US
Kind code	B2
Filing date	Mar 1, 2017
Priority date	Sep 3, 2014
Publication date	Apr 17, 2018
Grant date	Apr 17, 2018

Abstract

A liquid crystal display device, includes a display panel; a light guide plate to transfer light to the display panel; and a light source module on a side surface of the light guide plate to supply light to the light guide plate, the light source module including a light source to generate light; and a quantum dot unit between the light source and the light guide plate, the quantum dot unit extending along the side surface of the light guide plate and including a tube member filled with a resin including quantum dots, the tube member including a sealing part.

First claim

What is claimed is:

1. A method of manufacturing a liquid crystal display device including a display panel, a light source to supply light to the display panel, and quantum dots unit on a light-emitting surface of the light source, the method comprising:
disposing a tube member having one open end;
injecting a resin including quantum dots into the tube member through the open end; and
sealing the tube member by locally heating the open end using a heating device, wherein:
locally heating the open end includes locally cooling a region of the tube member using a cooling device, and
when the open end is locally heated using the heating device, the region of the tube member is locally cooled using the cooling device.

2. The method as claimed in claim 1 , wherein the open end is a sealing neck having an external diameter that is smaller than an external diameter of a remaining portion of the tube member.

3. The method as claimed in claim 1 , wherein injecting the resin including quantum dots into the tube member through the open end includes inserting an injection needle for injecting the resin through the open end and injecting the resin into the tube member through the injection needle.

4. The method as claimed in claim 3 , wherein the open end has an internal diameter that is larger than an external diameter of the injection needle.

5. The method as claimed in claim 3 , wherein the resin fills the tube member up to a beginning of the open end.

6. The method as claimed in claim 5 , further comprising removing the injection needle after the resin fills the tube member to the beginning of the open end.

7. The method as claimed in claim 1 , further comprising adjusting an inside of the tube member into which the resin is injected to a vacuum condition.

8. The method as claimed in claim 1 , further comprising purging an inside of the tube member into which the resin is injected using an inert gas.

9. The method as claimed in claim 1 , further comprising curing the resin after the inside of the tube member into which the resin is injected is adjusted to a vacuum condition or purged with an inert gas.

10. The method as claimed in claim 9 , comprising curing the resin by one or more of ultraviolet curing or heat curing.

11. The method as claimed in claim 1 , wherein the locally cooled region is a beginning of the open end of the tube member, which is filled with the resin, the locally cooled region being between the open end and a resin-filled portion of the tube member.

12. The method as claimed in claim 1 , wherein disposing the tube member having one open end includes forming the tube member to have a cross-section of which shape is one of a rectangle, a square, an oval, or a circle.

13. The method as claimed in claim 12 , wherein disposing the tube member having one open end includes forming the open end to have a cross-section of which shape is one of a rectangle, a square, an oval, or a circle.

14. The method as claimed in claim 1 , wherein the cooling device includes a cooling wire wound around the tube member.

15. The method as claimed in claim 1 , wherein the cooling device is an air cooling device.

16. The method as claimed in claim 1 , wherein the cooling device is a water cooling device.

Assignees

• Samsung Display Co Ltd

Inventors

• Lee Baek Hee
• Park Hae Il
• Sim Mun Ki
• Yoon Seon-Tae

Classifications

• B29C35/0805

  using electromagnetic radiation · CPC title

• G02F1/1339

  Gaskets; Spacers; Sealing of cells · CPC title

• G02F2001/133614

  Physics · mapped topic

• G02F1/1341

  Filling or closing of cells · CPC title

• G02B6/0026 Primary

  Wavelength selective element, sheet or layer, e.g. filter or grating · CPC title