LAMINATED GLASS SUBSTRATE STRUCTURE AND ITS MANUFACTURE

• US 20010001686A1
• Filed: 03/18/1998
• Published: 05/24/2001
• Est. Priority Date: 03/19/1997
• Status: Active Grant

• Current Assignee: Sharp Kabushiki Kaisha (Hon Hai Precision Industry Co., Ltd.)
• Original Assignee: Fujitsu Limited
• Inventors: TANAKA, KATSUNORI, MIYAMOTO, HIROFUMI, KISHIDA, KATSUHIKO, SHIONO, FUMIKO
• Granted Patent: US 6,361,867 B2
• Time in Patent Office: Days
• US Class Current: 428/192
• CPC Class Codes: B24B 9/10 of plate glass
• CPC Class Codes: B32B 17/10293 Edge features, e.g. inserts or holes
• CPC Class Codes: B32B 17/10917 between two pre-positioned glass layers
• CPC Class Codes: B32B 17/10981 Pre-treatment of the layers
• CPC Class Codes: C03C 17/02 with glass C03C17/34, C03C17/44 take precedence
• CPC Class Codes: C09K 2323/00 Functional layers of liquid crystal optical display excluding electroactive liquid crystal layer characterised by chemical composition
• CPC Class Codes: Y10T 156/108 Flash, trim or excess removal
• CPC Class Codes: Y10T 428/24777 Edge feature

Abstract

A method of forming a laminated glass substrate structure suitable for use in a display device or the like, includes the steps of: a) preparing a first glass substrate having first and second main faces; b) preparing a second glass substrate having third and fourth main faces; c) after the steps a) and b), adhering the first and second glass substrates with a space formed therebetween and with the third main face facing to the second main face; and d) after the step c), performing a smoothing process relative to all edges excepting one edge among edges defining the first main face. The laminated glass substrate structure provides an improved load resistance.

Claims

1. A laminated glass substrate structure comprising:

a first glass substrate having first and second main faces, all edges excepting one edge among edges defining the first main face having been subjected to a smoothing process; and

a second glass substrate having third and fourth main faces, said second glass substrate being adhered to said first glass substrate with a space formed therebetween and with the third main face facing to the second main face.

2. A laminated glass substrate structure according to

claim 1

, wherein the smoothing process is one of heating/melting, dissolving, abrasion, lapping, resin coating, and a combination thereof.

3. A laminated glass substrate structure according to

claim 2

, wherein the excepted one edge among the edges defining the first main face has been subjected to a smoothing process of the resin coating.

4. A laminated glass substrate structure according to

claim 1

, wherein said second glass substrate is adhered to a partial area of said first glass substrate, and said first glass substrate has a single plate area not facing said second glass substrate.

5. A laminated glass substrate structure according to

claim 4

, wherein the two edges not subjected to the smoothing process among the edges defining the fourth main face are adjacent to the single plate area.

6. A laminated glass substrate structure according to

claim 5

, wherein the laminated glass substrate is a display device.

7. A laminated glass substrate structure according to

claim 6

, further comprising a liquid crystal layer disposed between said first and second glass substrate, whereby the display device constitutes a liquid crystal display device.

8. A laminated glass substrate structure according to

claim 7

, wherein the laminated glass substrate structure further comprises a liquid crystal injection port formed on a side face adjacent to the excepted one edge among the edges defining the first main face.

9. A laminated glass substrate structure according to

claim 1

, wherein the excepted one edge among the edges defining the first main face has been subjected to a smoothing process of resin coating.

10. A laminated glass substrate structure according to

claim 1

, wherein at least part of the edges subjected to the smoothing process comprises a chamfered portion having a width of 0.1 mm to 0.5 mm in the first main face.

11. A laminated glass substrate structure according to

claim 10

, wherein said chamfered portion forms an angle of 120°

to 150°

with respect to the first main face.

12. A laminated glass substrate structure according to

claim 1

, wherein two edges among edges defining the fourth main face have not been subjected to the smoothing process.

13. A laminated glass substrate structure according to

claim 6

, further comprises a connector connected to the second main face in the single plate area.

14. A method of forming a laminated glass substrate structure, comprising the steps of:

a) preparing a first glass substrate having first and second main faces;

b) preparing a second glass substrate having third and fourth main faces;

c) after said steps a) and b), adhering the first and second glass substrates with a space formed therebetween and with the third main face facing to the second main face; and

d) after said step c), performing a smoothing process relative to all edges excepting one edge among edges defining the first main face.

15. A method of forming a laminated glass substrate structure according to

claim 14

, wherein the smoothing process is one of heating/melting, dissolving, abrasion, lapping, resin coating, and a combination thereof.

16. A method of forming a laminated glass substrate structure according to

claim 15

, further comprising the step of:

e) performing a smoothing process of resin coating relative to the excepted one edge among the edges defining the first main face.

17. A method of forming a laminated glass substrate structure according to

claim 14

, wherein said step a) includes a sub-step of forming a thin film transistor or a color filter array on the second main face, and said step b) includes a sub-step of forming a color filter array or thin film transistors on the third main face.

18. A method of forming a laminated glass substrate structure according to

claim 14

, further comprising the step of:

e) after said step c), performing a smoothing process relative to at least two edges among edges defining the fourth main face.

19. A method of forming a laminated glass substrate structure according to

claim 14

, wherein said step d) comprises chamfering an edge by a width of 0.1 mm to 0.5 mm in the first main face.

20. A method of forming a laminated glass substrate structure according to

claim 19

, wherein said chamfering forms a chamfered face which forms an angle of 120°

to 150°

with respect to the first main face.