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US 5,510,671 AGranted
Inwardly convex vacuum envelope
AssigneeMitsubishi Denki Kabushiki Kaisha
InventorsKoji Nakamura, Keitaro Tsukui, Kenichi Umino
Life of this patent
Estimating the term…
Abstract
A display device capable of bearing the stress due to vacuum condition and capable of reducing both weight and depth simultaneously, by incorporating a vacuum envelope with glass screen having a front section made in a curved panel and a rear section being concave toward the inside of the vacuum envelope.
Claims18
A display device for displaying picture images, comprising:
- an electron gun for generating electron beams that irradiate a fluorescent screen;
- and
- a vacuum envelope with a glass screen having a substantially evacuated inside and said electron gun installed therein said vacuum envelope including,
- a front section having a curved surface provided with said fluorescent screen and having an inwardly convex shape which curves toward the inside of said vacuum envelope, and
- a rear section having an inwardly convex shape which curves toward the inside of said vacuum envelope.
2 more elements
A display system comprising:
- a housing including,
- a rear section,
- a front section inwardly curved toward said rear section such that a center portion of said front section is closer to said rear section than a peripheral portion of said front section and having a flurorescent screen provided on an interior surface of said front section, and
- side sections, connected to said front and rear sections to create a sealed, substantially evacuated interior of said housing;
- at least one electron gun, located within said housing, emitting at least on electron beam;
- and
- an electrode system, located within said housing, focusing said at least one electron beam onto said fluorescent surface.
4 more elements
A display system comprising:
- a housing including,
- a rear section, having an exterior surface inwardly curved toward the interior of the housing,
- a front section inwardly curved toward said rear section such that a center portion of said front section is closer to said rear section than a peripheral portion of said front section and having a fluorescent screen provided on an interior surface of said front section, and
- side sections, connected to said front section and said rear section to create a sealed, substantially evacuated interior of said housing;
- at least one electron gun, located within said housing, emitting at least one electron beam;
- and
- an electrode system, located within said housing, focusing said at least one electron beam onto said fluorescent surface.
4 more elements
Dependencies are inferred from the claim text.