DISPLAY DEVICE

Abstract

The present invention provides a display device allowing the quality and reliability to be improved by preventing the occurrence of vacuum leak attributable to dislocation which may be caused by preliminary baking and panel sealing.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a developed perspective view of a display device according to a first embodiment of the present invention.

FIG. 2 is a top view of the support body shown in FIG. 1.

FIGS. 3A and 3B each show a junction between constituent pieces of the support body. FIG. 3A is an enlarged cross-sectional view taken along line A-A′ of FIG. 2. FIG. 3B is an enlarged sectional view taken along line B-B′ of FIG. 2.

FIG. 4 is an enlarged top view of a part where protrusion occurs upward and downward from the outline of the bonding surface.

FIG. 5 is an enlarged schematic top view for explaining the relation between the width of the support body and the width of the protrusion.

FIG. 6 is an enlarged cross-sectional view of a junction after the panel is assembled in the display device of the present invention.

FIG. 7 is an enlarged sectional view of a junction between support body members for explaining a display device according to a second embodiment of the present invention.

FIG. 8 is a top view of a support body for explaining a display device according to a third embodiment of the present invention.

FIGS. 9A to 9C each show a plan view of the main part of a structure to combine support body members forming a support body of a display device according to a fourth embodiment of the present invention.

FIG. 10 is a cross-sectional view of a structure of a conventional display device.

FIG. 11 is a developed perspective view for schematically explaining how a conventional display device is constructed.

FIG. 12 provides top and side views of the conventional support body shown in FIG. 12.

Claims

1. A display device comprising: a front substrate which has an anode and phosphors on the inner side of the front substrate;a rear substrate which has a plurality of electron sources on the inner side of the rear substrate and is arranged to face the front substrate with a certain distance;a support body interposed between the front substrate and the rear substrate so as to surround a display region and maintain the distance between the front substrate and the rear substrate; anda sealing member which hermetically bonds the end surfaces of the support body to the front substrate and the rear substrate;wherein the support body is formed by hermetically bonding a plurality of support body members by using a plural kinds of bonding members for bonding together the bonding surfaces of adjacent support body members, the plural kinds of bonding members being different in softening temperature from each other.

2. The display device according to claim 1, wherein the bonding members comprise a first bonding member for bonding a central area of each of the bonding surfaces and a second bonding member for bonding a marginal area around the central area; andthe softening temperature of the first bonding member is set higher than the softening temperature of the second bonding member.

3. The display device according to claim 1, wherein the bonding members comprise a first bonding member for bonding a central transverse area of each of the bonding surfaces and a second bonding member for bonding marginal areas above and below the central transverse area; andthe softening temperature of the first bonding member is set higher than the softening temperature of the second bonding member.

4. The display device according to claim 1, wherein the softening temperature difference between the first bonding member and the second bonding member is not smaller than 20 degrees C.

5. The display device according to claim 1, wherein each junction between support body members has protruded portions of the second bonding member which is protruded out of the bonding surfaces.

6. The display device according to claim 5, wherein the width of the protruded portions is not smaller than 30 percent of the width of the bonding surfaces.

7. The display device according to claim 5, wherein the protruded portions of the second bonding member is pressed into an ellipse-like shape by the front substrate and the rear substrate.

8. The display device according to claim 1, wherein the bonding members are made of amorphous frit glass.

9. The display device according to claim 1, wherein the sealing member is made of amorphous frit glass.

10. The display device according to claim 1, wherein the softening temperature of the sealing member is lower than the softening temperatures of the bonding members.

11. The display device according to claim 1, wherein the softening temperature difference between the sealing member and the second bonding member is not higher than 70 degrees C.