Image display device and manufacturing method for image display device
AssigneeKabushiki Kaisha Toshiba
InventorsShigeo Takenaka, Masaru Nikaido, Satoshi Ishikawa, Satoko Oyaizu
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Abstract
A vacuum envelope includes a first substrate provided with an image display surface and a second substrate opposed to the first substrate with a gap and provided with a plurality of electron sources. The second substrate is formed of a metal substrate, of which a setting surface provided with the electron sources is covered by an insulating layer.
Claims9
An image display device comprising an envelope which has a first substrate provided with an image display surface and a second substrate opposed to the first substrate with a gap and provided with a plurality of electron sources and is kept with a vacuum inside the gap,
- the second substrate being formed of a metal substrate which has a setting surface provided with the electron sources and covered by a first insulating layer, and a back surface opposed to the setting surface and covered by a second insulating layer,
- the second substrate being provided with a plurality of internal wires which are arranged on the setting surface of the metal substrate with the interposition of the first insulating layer and drive the electron sources, a plurality of back wires which have a wiring resistance lower than that of the internal wires and are arranged on the back surface of the metal substrate with the interposition of the second insulating layer, and plurality of through holes formed penetrating the metal substrate and the first insulating layer, and electrically conductive portions which are located individually in the through holes and electrically connect the internal wires and the back wires.
Dependencies are inferred from the claim text.