Image display device

• US 20050206299A1
• Filed: 02/07/2005
• Published: 09/22/2005
• Est. Priority Date: 02/09/2004
• Status: Active Grant

• Current Assignee: Panasonic Liquid Crystal Display Company Limited (Panasonic Holdings Corporation)
• Original Assignee: Hitachi Displays Limited (Japan Display Incorporated)
• Inventors: Kaneko, Yoshiyuki, Nakamura, Tomoki, Noguchi, Kazunari
• Granted Patent: US 7,417,365 B2
• Time in Patent Office: Days
• US Class Current: 313/495
• CPC Class Codes: H01J 2217/49264 Vessels
• CPC Class Codes: H01J 2329/90 Leading-in arrangements; seals therefor
• CPC Class Codes: H01J 2329/941 Means for exhausting the vessel
• CPC Class Codes: H01J 29/90 Leading-in arrangements; Seals therefor
• CPC Class Codes: H01J 29/94 Selection of substances for gas fillings; Means for obtaining or maintaining the desired pressure within the tube, e.g. by gettering exhausting, degassing, gettering of electric discharge tubes in general H01J9/38
• CPC Class Codes: H01J 31/123 Flat display tubes

Abstract

In a corner portion outside a display region of a face substrate which constitutes a face panel of a display device, an opening is formed. In the opening, a stem glass structural body, which is configured by integrally forming an exhaust pipe on a center portion of a stem glass and by forming conductive leads in a peripheral portion thereof in an embedded manner, is fixed by welding using curing by heating. The exhaust pipe is evacuated and, thereafter, tipped off, thus realizing vacuum sealing of the inside thereof. A lead line is connected to a distal end of one conductive lead by welding and another end of the lead line is electrically connected with one end portion of the anode formed on an inner surface of the face substrate using a conductive adhesive agent. Further, a getter is mounted and fixed to another conductive lead line by welding.

Claims

1. An image display device comprising:

a face substrate having an anode and phosphors on an inner surface thereof;

a back substrate which has electron sources on an inner surface thereof and is arranged to face the face substrate with a given distance therebetween; and

a sealing frame which is interposed between the face substrate and the back substrate while surrounding a display region which is formed at center portions of opposingly facing surfaces of main surfaces of the face substrate and the back substrate and holds the face substrate and the back substrate at the given distance,

end surfaces of the sealing frame and the face substrate and the back substrate being respectively hermetically sealed by way of a sealing material thus forming a vacuum envelope,

wherein an exhaust pipe is formed in at least one portion of the vacuum envelope, and a stem glass structural body in which at least one conductive lead which performs the electric connection in the inside of the vacuum envelope penetrates therethrough hermetically is hermetically bonded to a peripheral portion of the exhaust pipe.

2. An image display device according to claim 1, wherein the stem glass structural body is hermetically joined to the back substrate.

3. An image display device according to claim 1, wherein the stem glass structural body is hermetically joined to the face substrate.

4. An image display device according to claim 1, wherein the stem glass structural body is hermetically joined to the sealing frame.

5. An image display device according to claim 1, wherein one conductive lead is electrically connected with the anode.