Image display apparatus, method of manufacturing the same, and sealing-material applying device
AssigneeKabushiki Kaisha Toshiba
InventorsAkiyoshi Yamada, Takashi Nishimura, Hirotaka Murata, Kazuyuki Seino
Life of this patent
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Abstract
The evacuated envelope of an image display apparatus has a rear substrate, a front substrate opposing the rear substrate, and a sidewall interposed between the rear and front substrates. A phosphor screen is formed on the inner surface of the front substrate. Electron-emitting elements are provided on the rear substrate. An indium layer is formed on a sealing surface lying between the front substrate and the sidewall. When the indium layer is heated and melted in a vacuum atmosphere, the front and rear substrates are sealed to each other, with the sidewall interposed between them.
Claims69
An image display apparatus comprising an envelope having a rear substrate, a front substrate opposing the rear substrate, and a number of electron-emitting elements provided in the envelope,
- the front substrate and the rear substrate being sealed, at peripheral edge parts, either directly or indirectly to each other with low melting-point metal sealing material.
An image display apparatus comprising an envelope having a rear substrate, a front substrate opposing the rear substrate, a phosphor screen formed on an inner surface of the front substrate, and a number of electron-emitting elements provided on an inner surface of the rear substrate and configured to emit electron beams,
- the front substrate and the rear substrate being sealed, at peripheral edge parts, either directly or indirectly to each other with low melting-point metal sealing material.
A method of manufacturing an image display apparatus which comprises an envelope having a rear substrate, a front substrate opposing the rear substrate, and a number of electron-emitting elements provided in the envelope, said method comprising:
- applying low melting-point metal sealing material to a sealing surface lying between the rear substrate and the front substrate;
- and
- sealing the rear substrate and the front substrate together, either directly or indirectly to each other, by heating the rear substrate and the front substrate in a vacuum atmosphere and melting the low melting-point metal sealing material.
An image display apparatus comprising an envelope having a rear substrate, a front substrate opposing the rear substrate, and a plurality of electron-emitting elements provided in the envelope,
- the front substrate and the rear substrate being sealed either directly or indirectly to each other with a base layer and a metal sealing material layer provided on the base layer and different in material from the base layer.
An image display apparatus comprising an envelope having a rear substrate, a front substrate opposing the rear substrate and a sidewall arranged between peripheral edge parts of the front substrate and the rear substrate, and a plurality of electron-emitting elements provided in the envelope,
- the front substrate and the sidewall, or the rear substrate and the sidewall, and the front substrate and the sidewall and the rear substrate and the sidewall are sealed together with a base layer and a metal sealing material layer provided on the base layer and different in material from a material of the base layer.
An image display apparatus comprising:
- an envelope having a rear substrate, a front substrate opposing the rear substrate;
- a phosphor screen formed on an inner surface of the front substrate;
- and
- an electron beam source provided on the rear substrate and configured to emit electron beams to the phosphor screen to cause the phosphor screen emits light,
- the front substrate and the rear substrate being sealed, either directly or indirectly to each other, with a base layer and a metal sealing material layer provided on the base layer and different in material from the base layer.
A method of manufacturing an image display apparatus which comprises an envelope having a rear substrate, a front substrate opposing the rear substrate, and a plurality of electron-emitting elements provided in the envelope, the method comprising:
- forming a base layer along a sealing surface lying between the rear substrate and the front substrate;
- forming a metal sealing material layer on the base layer, the metal sealing material layer being different in material from the base layer;
- and
- heating the rear substrate and the front substrate in a vacuum atmosphere, melting the metal sealing material layer and sealing the rear substrate and the front substrate, either directly or indirectly to each other.
A method of manufacturing an image display apparatus which comprises an envelope having a rear substrate, a front substrate opposing the rear substrate, and a plurality of electron-emitting elements provided in the envelope, the method comprising:
- applying molten metal sealing material to a sealing surface lying between the rear substrate and the front substrate, while applying ultrasonic waves;
- and
- heating and melting the metal sealing material in a vacuum atmosphere after the metal sealing material has been applied, and sealing the rear substrate and the front substrate at the sealing surface, either directly or indirectly to each other.
A method of manufacturing an image display apparatus which comprises an envelope having a rear substrate, a front substrate opposing the rear substrate, a sidewall sealed between peripheral edge parts of the front substrate and the rear substrate;
- and a plurality of electron-emitting elements provided in the envelope, wherein at least one of sealing surfaces between the front substrate and the sidewall and between the rear substrate and the sidewall, or the front substrate and the sidewall is sealed with a metal sealing material layer, the method comprising:
- applying molten metal sealing material to said at least one of sealing surfaces, while applying ultrasonic waves;
- and
- heating and melting the metal sealing material in a vacuum atmosphere after the metal sealing material has been applied, and sealing the rear substrate, the front substrate and the sidewall together at the sealing surface.
An image display apparatus comprising:
- an envelope having a rear substrate, a front substrate opposing the rear substrate and sealed either directly or indirectly to the rear substrate with metal sealing material;
- and
- a number of electron-emitting elements provided in the envelope;
- wherein the metal sealing material is provided on a sealing surface lying between the rear substrate and the front substrate, forming a metal sealing material layer that extends along the entire of the sealing surface, and the metal sealing material layer has bent or curved parts at one portion, at least, which extends along a straight part of the sealing surface.
An image display apparatus comprising:
- an envelope having a rear substrate, a front substrate opposing the rear substrate and sealed either directly or indirectly to the rear substrate with metal sealing material;
- and
- a number of electron-emitting elements provided in the envelope,
- wherein the metal sealing material is provided on a sealing surface lying between the rear substrate and the front substrate, forming a metal sealing material layer that extends along the entire of the sealing surface, and the metal sealing material layer has an edge at one portion, at least, which extends along a straight part of the sealing surface, said edge having projections.
An image display apparatus comprising:
- an envelope having a rear substrate, a front substrate opposing the rear substrate and sealed either directly or indirectly to the rear substrate with metal sealing material;
- a phosphor screen formed on an inner surface of the front substrate;
- and
- an electron beam source which provided on the rear substrate and configured to emit electron beams to the phosphor screen to cause the phosphor screen emits light,
- wherein the metal sealing material is provided on a sealing surface laying between the rear substrate and the front substrate forming a metal sealing material layer that extends along the entire of the sealing surface, and the metal sealing material layer has bent or curved parts at one portion, at least, which extends along a straight part of the sealing surface.
A method of manufacturing an image display apparatus comprising an envelope having a rear substrate, a front substrate opposing the rear substrate and sealed either directly or indirectly to the rear substrate with metal sealing material, and a number of electron-emitting elements provided in the envelope, the method comprising:
- applying metal sealing material to a sealing surface laying between the rear substrate and the front substrate, thereby forming a metal sealing material layer which extends along the entire of the sealing surface;
- and
- heating and melting the metal sealing material in a vacuum atmosphere after the metal sealing material has been applied, and sealing the rear substrate and the front substrate at the sealing surface, either directly or indirectly to each other,
- wherein, in the applying the metal sealing material, bent or curved parts are formed at one portion, at least, of the metal sealing material layer, which extends along a straight part of the sealing surface.
A method of manufacturing an image display apparatus comprising an envelope having a rear substrate, a front substrate opposing the rear substrate and sealed either directly or indirectly to the rear substrate with metal sealing material, and a number of electron-emitting elements provided in the envelope, the method comprising:
- applying metal sealing material to a sealing surface laying between the rear substrate and the front substrate, thereby forming a metal sealing material layer which extends along the entire of the sealing surface;
- and
- heating and melting the metal sealing material in a vacuum atmosphere after the metal sealing material has been applied, and sealing the rear substrate and the front substrate at the sealing surface, either directly or indirectly to each other,
- wherein, in the applying the metal sealing material, the metal sealing material layer comes to have projections are formed at one portion, at least, of the metal sealing material layer, which extends along a straight part of the sealing surface.
Dependencies are inferred from the claim text.