Producing method of the liquid crystal display panel

• US 6,873,394 B2
• Filed: 08/07/2003
• Issued: 03/29/2005
• Est. Priority Date: 08/08/2002
• Status: Expired due to Fees

• Current Assignee: NEC LCD Technologies Limited (NEC Corporation)
• Original Assignee: NEC LCD Technologies Limited (NEC Corporation)
• Inventors: Yoshizoe, Hidefumi, Ueebisu, Shinji, Mukai, Toshiaki, Noiri, Yoshikazu, Horiuchi, Toshihiro
• Primary Examiner(s): Parker, Kenneth
• Assistant Examiner(s): Vu, Phu
• Application Number:
  US10/636,412
• Publication Number:
  US 20040027530A1
• Time in Patent Office: 600 Days
• Field of Search: 349/188, 349/189, 349/190, 349/191, 349/187
• US Class Current: 349/187
• CPC Class Codes: G02F 1/133351 Manufacturing of individual cells out of a plurality of cells, e.g. by dicing
• CPC Class Codes: G02F 1/133354 Arrangements for aligning or assembling substrates
• CPC Class Codes: G02F 1/13415 Drop filling process

Abstract

A producing method of a liquid crystal display panel includes steps (a) to (e). The Step (a) is fixing a counter substrate on a fixing table, wherein the counter substrate includes a plurality of counter portions each of which includes a plurality of counter electrodes. The Step (b) is dividing the counter substrate into the plurality of counter portions. The Step (c) is putting a liquid crystal material on the each of plurality of counter portions. The Step (d) is attaching a device substrate and the counter substrate together, wherein the device substrate includes a plurality of device portions each of which includes a plurality of switching devices. The Step (e) is dividing the device substrate into the plurality of device portions. The each of plurality of device portions is attached to a corresponding one of the each of plurality of counter portions.

Claims

1. A producing method for a liquid crystal display panel comprising:

(a) fixing a counter substrate on a fixing table, wherein said counter substrate includes a plurality of counter portions each of which includes a plurality of counter electrodes.

(b) dividing said counter substrate into said plurality of counter portions;

(c) putting a liquid crystal material on each of said divided plurality of counter portions.

(d) attaching a device substrate and said counter substrate together, wherein said device portions each of which includes a plurality of switching devices; and

(e) dividing said device substrate into said plurality of device portion wherein said each of plurality of device portions is attached to a corresponding one of said each of plurality of counter portions.

2. The producing method of a liquid crystal display panel according to claim 1, wherein said step (a) comprises:

(a1) setting said counter substrate through a spacer on said fixing table,

said spacer is set on said fixing table and has a plurality of holes which penetrate said spacer, and

said fixing table absorbs said counter substrate through said spacer to fix said counter substrate.

3. The producing method of a liquid crystal display panel according to claim 2, wherein said step (b) comprises:

(b1) dividing said counter substrate into said plurality of counter portions by a blanking blade all at once.

4. The producing method of a liquid crystal display panel according to claim 3, wherein said fixing table has an air absorption groove, and

said spacer has a guide groove in which said blanking blade enters when dividing said counter substrate.

5. The producing method of a liquid crystal display panel according to claim 1, wherein said step (e) comprises:

(e1) cutting said device substrate from a side of said device substrate into said plurality of device portions.

6. The producing method of a liquid crystal display panel according to claim 1, wherein said counter substrate further includes:

a plastic film, and

said device substrate further includes;

any one of a plastic film and a glass plate.

7. The producing method of a liquid crystal display panel according to claim 1, wherein said step (d) comprises:

(d1) pasting a sealing material around said each of device portions, and

(d2) pasting said each of device portions to a corresponding one of said each of counter portions by said sealing material.

8. The producing method of a liquid crystal display panel according to claim 7, wherein said step (c) comprise:

(c1) dropping said liquid crystal material on a plurality of positions in said each of counter portions,

an amount of said liquid crystal material dropped is enough to fill a space which is formed among said sealing material, said each of device portions and said corresponding one of said each of counter portions.

9. The producing method of a liquid crystal display panel according to claim 8, wherein distances from said plurality of positions to a center point in said each of counter portions are substantially the same.

10. The producing method of a liquid crystal display panel according to claim 8, wherein said plurality of positions have substantially point symmetry to a center point in said each of counter portions.

11. The producing method of a liquid crystal display panel according to claim 2, wherein said step (d) comprises:

(d1) pasting a sealing material around said each of device portions, and

(d2) pasting said each of device portions to a corresponding one of said each of counter portions by said sealing material.

12. The producing method of a liquid crystal display panel according to claim 11, wherein said step (c) comprise:

(c1) dropping said liquid crystal material on a plurality of positions in said each of counter portions,

an amount of said liquid crystal material dropped is enough to fill a space which is formed among said sealing material, said each of device portions and said corresponding one of said each of counter portions.

13. The producing method of a liquid crystal display panel according to claim 12, wherein distances from said plurality of positions to a center point in said each of counter portions are substantially the same.

14. The producing method of a liquid crystal display panel according to claim 12, wherein said plurality of positions have substantially point symmetry to a center point in said each of counter portions.

15. The producing method of a liquid crystal display panel according to claim 1, wherein a plurality of cutting grooves are formed between at least two each of device portions in said device substrate such that dividing said device substrate in said step (e) is easier.

16. A producing method for a liquid crystal display panel comprising:

(a) fixing a counter substrate on a fixing table, wherein said counter substrate includes a plurality of counter portions each of which includes a plurality of counter electrodes.

(b) putting a liquid crystal material on said each of plurality of counter portions

(c) dividing said counter substrate into said plurality of counter portions following step B and prior to steps D and E;

(d) attaching a device substrate and said counter substrate together, wherein said device portions each of which includes a plurality of switching devices; and

(e) dividing said device substrate into said plurality of device portion wherein said each of plurality of device portions is attached to a corresponding one of said each of plurality of counter portions.

17. The The producing method of a liquid crystal display panel according to claim 16, wherein said counter substrate further includes:

a plastic film, and

said device substrate further includes;

any one of a plastic film and a glass plate.

18. The producing method of a liquid crystal display panel according to claim 17, wherein said step (a) comprises:

(a1) setting said counter substrate through a spacer on said fixing table,

said spacer is set on said fixing table and has a plurality of holes which penetrate said spacer, and

said fixing table absorbs said counter substrate through said spacer to fix said counter substrate.

19. The producing method of a liquid crystal display panel according to claim 18, wherein said step (c) comprises:

(c1) dividing said counter substrate into said plurality of counter portions by a blanking blade all at once.

20. The producing method of a liquid crystal display panel according to claim 19, wherein said step (e) comprises:

(e1) cutting said device substrate from a side of said device substrate into said plurality of device portions.