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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 3986073 B1

PDFFull Text
Date of Patent:
Oct. 12, 1976

Filed:

Aug. 11, 1972

Luminescent screen of a color television tube

Applicant:
Inventors:

Hans Dignus Duinker, Eindhoven, NL;

Gerardus Antonius Vermeulen, Eindhoven, NL;

Assignee:

U.S. Philips Corporation, New York, NY (US);

Attorneys:

Trifari; Frank R.

Berka; George B.

Primary Examiner:

Ralph Husack

Int. Cl.
CPC ...
H01J / ; H01J / ;
U.S. Cl.
CPC ...
3134 / ; 427 68 ; 427105 ;
Abstract

A method of manufacturing a luminescent screen of a shadow mask color tube. The phosphor dots on the screen which are separated by a light-absorbing material are smaller than the apertures in the shadow mask. The light-absorbing layer is first provided on the window and the luminescent materials are then provided successively. The inner surface of the window is such that undulations having a spatial frequency from 5 to 50 cm.sup.-.sup.1 or, in other words, wavelengths between 0.2 cm and 0.02 cm, show a depth of less than 1 micron.

Find Patent Forward Citations

Duinker, Hans. (1976). Luminescent screen of a color television tube (U.S. Patent No. 3986073). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/3986073

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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