Flat picture tube

Electric lamp and discharge devices – With luminescent solid or liquid material – Vacuum-type tube

Patent

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Details

Other Related Categories

313422, 313495, 313496, H01J 2970

Type

Patent

Status

active

Patent number

058049169

Description

ABSTRACT:
A flat picture tube including a glass vessel which is internally evacuated, a heater installed inside the glass vessel for emitting heat electrons, a plurality of anodes extended in one direction and disposed at a constant interval on one inner plane of the glass vessel for absorbing the heat electrons, a plurality of fluorescent units disposed on the plurality of anodes in a matrix shape for radiating depending on heat electrons absorbed to the anodes, and a plurality of control grids extended perpendicularly to the anode extended direction and disposed in a constant interval for controlling the absorption of the heat electrons toward the anodes operates in a matrix digital method and does not necessitate an electron gun nor deflection yokes, thereby reducing the volume thereof. In the case of a 20 inch picture tube, the maximum thickness thereof is only 5 cm so that it can be adopted for a wall television. Also, since a high-voltage power is not required, the overall power consumption is lowered. Also, the resolution is increased owing to its 2100 horizontal lines, compared with a conventional 19 inch color picture tube having 600 lines.

REFERENCES:
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patent: 3936697 (1976-02-01), Scott
patent: 4218636 (1980-08-01), Miyazawa
patent: 4633134 (1986-12-01), Kishino et al.
patent: 4694225 (1987-09-01), Tomii et al.
patent: 4733139 (1988-03-01), Morimoto
patent: 4794306 (1988-12-01), Tischer et al.
patent: 4881017 (1989-11-01), Tsuruoka
patent: 5191259 (1993-03-01), Hayashi et al.
patent: 5453659 (1995-09-01), Wallace et al.
patent: 5534749 (1996-07-01), Ohoshi et al.
Korean Patent Laid Open No. 1613/1992, filed Jan. 30, 1992.
Nikkei Electronics, No. 589, pp. 109-114, dated Aug. 30, 1993.
Information Display, "CRT-Based Data Display Technology," pp. 16-19, Dec. 1993, by Richard Trueman.

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