Flat color cathode-ray tube with phosphor index stripes
AssigneeSanyo Electric Co., Ltd.
InventorsKatsuhiro Hinotani, Hajime Hayama, Shunichi Kishimoto, Takashi Miwa, Yasuo Funazo, Kazuhiro Kouno
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Abstract
A flat color CRT having a phosphor screen comprises red, green and, blue primary phosphor color stripes arranged at a spacing, and phosphor index stripes arranged in some of the spaces between the phosphor color stripes in a definite relation thereto. A black nonluminescent substance is provided between the phosphor index stripes and positioned at least in the spaces between the phosphor color stripes, and a metallic layer of sufficient thickness formed on the inner side of a tube panel and positioned in a corresponding relationship to the phosphor color stripes.
Claims6
A flat, color CRT comprising:
- a flat glass tube having first and second walls opposed to each other;
- an electron gun means for scanning the inner surface of said first wall with a single beam;
- a phosphor screen provided on said first wall inner surface, said phosphor screen including
- phosphor index stripes provided on said first wall inner surface arranged at small spacings,
- non-luminescence substance provided on said first wall inner surface interposed continuously between said phosphor index strips
- strips of metallic layer formed on the upper surface of said non-luminescent substance arranged repeatedly at a small distance from one another in a definite relation to the phosphor index strips, and
- red, green and blue primary phosphor color strips being provided on each of said metallic layer strips;
- and
- an observation window provided in said second wall for observing the luminescence of said phosphor color strips of said phosphor screen.
A flat, color CRT comprising:
- a flat glass tube having first and second walls opposed to each other;
- an electron gun for scanning the inner surface of said first wall with a single beam;
- a phosphor screen provided on said first wall inner surface, said phosphor screen including
- phosphor index strips provided on said first wall inner surface arranged at small spacings,
- strips of metallic layer formed directly on said first wall inner surface arranged repeatedly at a small distance from one another in a definite relation to the phosphor index strips,
- a non-luminescence substance provided on said first wall inner surface between said strips of metallic layers, and
- red, green, and blue primary phosphor color strips formed on said metallic layer strips;
- an observation window provided in said second wall for observing the luminescence of said phosphor color strips of said phosphor screen.
Dependencies are inferred from the claim text.