PROCESS FOR PRODUCING GLASS MEMBER PROVIDED WITH SEALING MATERIAL LAYER AND PROCESS FOR PRODUCING ELECTRONIC DEVICE

• US 20110209813A1
• Filed: 05/10/2011
• Published: 09/01/2011
• Est. Priority Date: 11/14/2008
• Status: Abandoned Application

• Current Assignee: Asahi Glass Company, Limited (AGC, Inc.)
• Original Assignee: Asahi Glass Company, Limited (AGC, Inc.)
• Inventors: Ide, Asahi, Kawanami, Sohei, SHIBUYA, Koichi
• Application Number:
  US13/104,174
• Publication Number:
  US 20110209813A1
• Time in Patent Office: Days
• US Class Current: 156/89.12
• CPC Class Codes: C03C 27/06 Joining glass to glass by processes other than fusing fusing C03B23/20; units for use as elements for closing wall or like openings and comprising two or more parallel glass panes in spaced relationship, the panes being permanently secured together E06B3/66
• CPC Class Codes: C03C 8/14 Glass frit mixtures having non-frit additions, e.g. opacifiers, colorants, mill-additions
• CPC Class Codes: C03C 8/24 Fusion seal compositions being frit compositions having non-frit additions, i.e. for use as seals between dissimilar materials, e.g. glass and metal; Glass solders
• CPC Class Codes: H01G 9/2077 Sealing arrangements, e.g. to prevent the leakage of the electrolyte
• CPC Class Codes: H05B 33/04 Sealing arrangements , e.g. against humidity
• CPC Class Codes: H10K 30/88 Passivation; Containers; Encapsulations
• CPC Class Codes: H10K 50/8426 Peripheral sealing arrangements, e.g. adhesives, sealants
• CPC Class Codes: H10K 71/00 Manufacture or treatment specially adapted for the organic devices covered by this subclass
• CPC Class Codes: Y02E 10/549 Organic PV cells
• CPC Class Codes: Y02P 70/50 Manufacturing or production processes characterised by the final manufactured product

Abstract

Laser sealing property and reliability of a glass panel are increased by suppressing cracks, fractures, separation and the like of glass substrates and a sealing material layer at the time of laser sealing.

A first paste for a sealing material containing no laser absorbent and a second paste for a sealing material containing a laser absorbent are applied in this order on a sealing region 2a of a glass substrate 2. A laminate film of a coating layer 11 of the first paste for a sealing material and a coating layer 12 of the second paste for a sealing material is fired, to form a sealing material layer 3 having a laminated structure of a layer 4 of the first glass material for sealing and a layer 5 of the second glass material for sealing. The second glass substrate 2 having such a sealing material layer 3 is laminated with a glass substrate having an element-formed region, and the sealing material layer 3 is irradiated with a laser light from the side of the layer 4 of the first glass material for sealing through the second glass substrate 2 for bonding.

Claims

1. A process for producing a glass member provided with a sealing material layer, which comprises a step of preparing a glass substrate having a sealing region;

a step of applying a first paste for a sealing material which contains a first glass material for sealing containing no laser absorbent and a second paste for a sealing material which contains a second glass material for sealing containing a laser absorbent, in this order on the sealing region of the glass substrate; and

a step of firing a laminate film of a coating layer of the first paste for a sealing material and a coating layer of the second paste for a sealing material, to form a sealing material layer having a laminated structure of a layer of the first glass material for sealing and a layer of the second glass material for sealing on the sealing region.

2. The process for producing a glass member provided with a sealing material layer according to claim 1, wherein the laser absorbent comprises at least one metal selected from Fe, Cr, Mn, Co, Ni and Cu or a compound containing the metal, and the second glass material for sealing contains the laser absorbent in an amount of from 0.1 to 10 mass %.

3. The process for producing a glass member provided with a sealing material layer according to claim 1, wherein each of the first and second glass materials for sealing contains, as the main component, sealing glass comprising tin-phosphate glass or bismuth glass.

4. The process for producing a glass member provided with a sealing material layer according to claim 1, wherein each of the first and second glass materials for sealing contains a low-expansion filler in an amount of from 3 to 50 mass %.

5. The process for producing a glass member provided with a sealing material layer according to claim 1, wherein the laser absorbent is diffused via the interface between the coating layer of the first paste for a sealing material and the coating layer of the second paste for a sealing material.

6. The process for producing a glass member provided with a sealing material layer according to claim 5, wherein the second paste for a sealing material is applied on the coating layer of the first paste for a sealing material having its surface roughened.

7. The process for producing a glass member provided with a sealing material layer according to claim 1, wherein the glass substrate comprises soda lime glass or alkali-free glass.

8. A process for producing an electronic device, which comprises a step of preparing a first glass substrate having an element-formed region provided with an electronic element and a first sealing region provided on the outer peripheral side of the element-formed region;

a step of preparing a second glass substrate having a second sealing region corresponding to the first sealing region of the first glass substrate;

a step of applying a first paste for a sealing material which contains a first glass material for sealing containing no laser absorbent and a second paste for a sealing material which contains a second glass material for sealing containing a laser absorbent, in this order on the second sealing region of the second glass substrate;

a step of firing a laminate film of a coating layer of the first paste for a sealing material and a coating layer of the second paste for a sealing material, to form a sealing material layer having a laminated structure of a layer of the first glass material for sealing and a layer of the second glass material for sealing, on the second sealing region;

a step of laminating the first glass substrate and the second glass substrate via the sealing material layer while a space is formed on the element-formed region; and

a step of irradiating the sealing material layer with a laser light from the side of the layer of the first glass material for sealing through the second glass substrate to melt at least the layer of the second glass material for sealing thereby to seal the space between the first glass substrate and the second glass substrate.

9. The process for producing an electronic device according to claim 8, wherein the laser absorbent is diffused via the interface between the coating layer of the first paste for a sealing material and the coating layer of the second paste for a sealing material.

10. The process for producing an electronic device according to claim 8, wherein the electronic element is an organic EL element or a solar cell element.