Image display device and method of manufacturing the same
OwnerAkiyoshi Yamada, Hirotaka Unnoinventors
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Abstract
A vacuum envelope of an image display device includes a front substrate and a rear substrate located opposite each other and a sealing portion which seals together respective peripheral portions of the front substrate and the rear substrate. The sealing portion includes a framework and a sealing material which extend along the peripheral edge portions of the front substrate and the rear substrate. The framework has a core member formed of a metal and a metal coating covering a surface of the core member.
Claims19
An image display device comprising:
- an envelope having a front substrate and a rear substrate located opposite each other and a sealing portion which seals together respective peripheral edge portions of the front substrate and the rear substrate,
- the sealing portion including a framework and a sealing material which extend along the peripheral edge portions of the front substrate and the rear substrate, the framework having a core member formed of a metal and a metal coating covering a surface of the core member.
A method of manufacturing an image display device which comprises an envelope having a front substrate and a rear substrate located opposite each other and a sealing portion which seals together respective peripheral edge portions of the front substrate and the rear substrate, the method comprising:
- forming a sealing material layer so as to cover the whole circumference of a peripheral edge portion of an inner surface of at least one of the front substrate and the rear substrate;
- locating the front substrate and the rear substrate having the sealing material layer thereon opposite to each other;
- locating between the peripheral edge portions of the respective inner surfaces of the front substrate and the rear substrate a framework which extends along the peripheral edge portions of the front substrate and the rear substrate, the framework having a core member formed of a metal and a metal coating covering a surface of the core member;
- heating the sealing material layer to melt or soften a sealing material and pressurizing the front substrate and the rear substrate in a direction to approach each other, thereby sealing the respective peripheral edge portions of the front substrate and the rear substrate.
Dependencies are inferred from the claim text.