Liquid crystal display device and method of manufacturing the same

• US 20040070722A1
• Filed: 06/26/2003
• Published: 04/15/2004
• Est. Priority Date: 07/03/2002
• Status: Active Grant

• Current Assignee: LG Display Co., Ltd.
• Original Assignee: LG Philips LCD Company Limited (LG Display Co., Ltd.)
• Inventors: Park, Ki Bok
• Granted Patent: US 7,133,107 B2
• Time in Patent Office: Days
• US Class Current: 349/153
• CPC Class Codes: G02F 1/1339 Gaskets; Spacers; Sealing of cells
• CPC Class Codes: G02F 1/1341 Filling or closing of cells

Abstract

A liquid crystal display device includes first and second substrates, a seal pattern disposed between outer peripheral portions of the first and second substrates, and a plurality of venting portions formed in the seal pattern at corner portions of the first and second substrates for venting air confined between the first and second substrates.

Claims

1. A liquid crystal display device, comprising:

first and second substrates;

a seal pattern disposed between outer peripheral portions of the first and second substrates; and

a plurality of venting portions formed in the seal pattern at corner portions of the first and second substrates for venting air confined between the first and second substrates.

2. The device according to claim 1, wherein each of the plurality of venting portions formed at the corner portions of the first and second substrates include a plurality of opposing vent openings.

3. The device according to claim 2, wherein each of the plurality of opposing vent openings have an opening width of about 0.5 mm.

4. The device according to claim 1, wherein each of the plurality of venting portions are aligned in a direction of a corner of the first and second substrates.

5. The device according to claim 1, wherein air surrounded by the seal pattern is discharged through each of the plurality of venting portions during bonding of the first and second substrates.

6. The device according to claim 1, wherein a width of the seal pattern is with a range of about 0.20 mm to about 0.40 mm.

7. A method of manufacturing a liquid crystal display device, comprising:

providing first and second substrates;

forming a seal pattern along an outer peripheral surface of the first substrate, the seal pattern configured such that a seal line is discontinuous at each corner of the first and second substrates; and

adhering the first substrate having the seal pattern formed thereon with the second substrate.

8. The method according to claim 7, wherein a volume of both ends of the seal line at each corner of the seal pattern increases to be connected together during the adhering of the first and second substrates.

9. The method according to claim 7, which further comprises dropping liquid crystal material into an inner region of the seal pattern formed in the first substrate.

10. The method according to claim 7, wherein the seal pattern formed on the first substrate has at least one liquid crystal injection hole.

11. The method according to claim 7, which further comprises injecting liquid crystal material into a cell gap formed by attachment of the first and the second substrates, and sealing the liquid crystal injection hole.