Electric lamp or space discharge component or device manufacturi – Process – With assembly or disassembly
Patent
1993-07-16
1994-11-01
Bradley, P. Austin
Electric lamp or space discharge component or device manufacturi
Process
With assembly or disassembly
445 41, 445 56, H01J 938
Patent
active
053603613
ABSTRACT:
The luminescent phosphor degradation in a cathode ray display tube, caused by aging, is decreased. This decrease is achieved by introducing before and/or during evacuation a hydrolyzable gas into the tube's inner space for a limited time interval, using a partial pressure which is essentially larger than the eventual final vacuum pressure of the cathode ray tube, and then allowing the final vacuum pressure to be achieved without any further supply of gas. Thereafter, the cathode ray tube is sealed in a gastight manner.
REFERENCES:
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patent: 5160287 (1992-11-01), Hirasawa
"Advanced technology: flat cold-cathode CRTs" by Ivor Brodie; Information Display Jan. 1989; pp. 17-19.
"Phosphor screens in cathode-ray tubes for projection television" by R. Raue, A. T. Vink and T. Welker; Philips Tech. Rev. 44, No. 11/12, 335-347, Nov. 1989.
"Field-emitter arrays applied to vacuum fluorescent display" by C. A. spindt, C. E. Holland, I. Brodie, J. B. Mooney and E. R. Westerberg, IEEE Trans. on Electron Devices, vol. 36, No. 1, Jan. 1989, pp. 225-228.
V. L. Grimm et al., "Physikalisch-Chemische und Chemische Vorgange . . . ", Valve Berichte, 1974, pp. 77-92.
Bechtel Helmut
Czarnojan Wolfram
Gruhlke Stefan
Kynast Ulrich
Bradley P. Austin
Fox John C.
Knapp Jeffrey T.
Spain Norman N.
U.S. Philips Corporation
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