Joined unit of glass base members, and airtight envelope

Patent metadata

Field	Value
Publication number	US-10370896-B2
Application number	US-201213688324-A
Country	US
Kind code	B2
Filing date	Nov 29, 2012
Priority date	Oct 30, 2009
Publication date	Aug 6, 2019
Grant date	Aug 6, 2019

Abstract

A joined unit of glass base members is provided, comprising first and second glass base members and a joining member which extends along opposing surfaces of the first and second glass base members, wherein glass base member is elastically deformed while being depressed in an internal direction of the glass base member in the vicinity of an end portion in a widthwise direction of the joining member, a boundary surface between the elastically deformed glass base member and the joining member and a surface of the elastically deformed glass base member, which are disposed in the vicinity of the end portion in the widthwise direction of the joining member, are positioned on an internal side of the glass base member, and an area, in which a residual stress is a compressive stress, is formed in the vicinity of the end portion in the widthwise direction of the joining member.

First claim

What is claimed is:

1. A joined unit of glass base members, comprising:
a first glass base member;
a second glass base member; and
a joining member which joins the first glass base member and the second glass base member, the joining member (a) having a viscosity that has a negative temperature coefficient, and (b) extending at a predetermined width along opposing surfaces of the first glass base member and the second glass base member,
wherein at least one of the first glass base member and the second glass base member is elastically deformed while being depressed in an internal direction of the glass base member at an end portion in a widthwise direction of the joining member,
wherein a boundary between an elastically deformed portion of the glass base member and the joining member is positioned farther toward an internal side of the glass base member as compared with a boundary between a non-elastically deformed portion of the glass base member and the joining member,
wherein an area formed at the end portion in the widthwise direction of the joining member has a residual stress in a thickness direction of the joining member that is a compressive stress, and
wherein the area formed at the end portion in the widthwise direction of the joining member has a greater compressive stress than a compressive stress of an area formed at a central portion in the widthwise direction of the joining member.

2. The joined unit of glass base members according to claim 1 , wherein the area formed at the central portion in the widthwise direction of the joining member has a residual stress in the thickness direction of the joining member that is a compressive stress, and
wherein an area having a residual stress in the thickness direction of the joining member that is a tensile stress is formed adjacently to (a) the area formed at the central portion in the widthwise direction of the joining member and which has a compressive stress and (b) the area formed at the end portion in the widthwise direction of the joining member and which has a compressive stress.

3. An airtight envelope comprising:
a first glass base member;
a second glass base member; and
a joining member which joins the first glass base member and the second glass base member, the joining member (a) having a viscosity that has a negative temperature coefficient, and (b) extending at a predetermined width along opposing surfaces of the first glass base member and the second glass base member,
wherein at least one of the first glass base member and the second glass base member is elastically deformed while being depressed in an internal direction of the glass base member at an end portion in a widthwise direction of the joining member,
wherein a boundary between an elastically deformed portion of the glass base member and the joining member is positioned farther toward an internal side of the glass base member as compared with a boundary between a non-elastically deformed portion of the glass base member and the joining member,
wherein an area formed at the end portion in the widthwise direction of the joining member has a residual stress in a thickness direction of the joining member that is a compressive stress, and
wherein the area formed at the end portion in the widthwise direction of the joining member has a greater compressive stress than a compressive stress of an area formed at a central portion in the widthwise direction of the joining member.

4. The airtight envelope according to claim 3 , wherein the area formed at the central portion in the widthwise direction of the joining member has a residual stress in the thickness direction of the joining member that is a compressive stress, and
wherein an area having a residual stress in the thickness direction of the joining member that is a tensile stress is formed adjacently to (a) the area formed at the central portion in the widthwise direction of the joining member and which has a compressive stress and (b) the area formed at the end portion in the widthwise direction of the joining member and which has a compressive stress.

5. An image display apparatus comprising:
the airtight envelope according to claim 3 ; and
an image forming member at any one of: (a) the first glass base member and (b) the second glass base member, wherein the image forming member is located in an interior of the airtight envelope.

Assignees

• Canon Kk

Inventors

• Matsumoto Mamo
• Saito Tomohiro
• Maeda Matsutaka
• Ito Nobuhiro
• Hara Toshitami

Classifications

• E06B5/00 Primary

  Doors, windows, or like closures for special purposes {(insulated compound frames specially adapted for sliding doors or windows E06B3/26347)}; Border constructions therefor · CPC title

• C03C27/06 Primary

  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 title

• B32B3/263

  characterised by a layer having non-uniform thickness · CPC title

• Y10T428/24562

  Interlaminar spaces · CPC title