Richard Johnston Bauder

US Patent:

50217070, Jun 4, 1991

Filed:

Nov 17, 1989

Appl. No.:

7/437577

Inventors:

Richard C. Bauder - Lancaster PA

Assignee:

RCA Licensing Corporation - Princeton NJ

International Classification:

H01J 2907

US Classification:

313402

Abstract:

An improved color picture tube includes a rectangular faceplate panel having two long sides and two short sides. A rectangular shadow mask is suspended at its four corners by support means within the panel adjacent to a cathodoluminescent screen located on the panel. The tube has three principal axes that are mutually orthogonal to each other. These axes include a longitudinal axis which extends through the center of the tube perpendicularly to the center of the panel, a major axis which passes through the center of the panel paralleling the long sides of the panel, and a minor axis which passes through the center of the panel paralleling the short sides of the panel. Each of the support means has a central support axis. The improvement comprises the two support axes on each side of the minor axis crossing a plane containing the longitudinal and major axes at a point located between the minor axis and a short side of the panel.

US Patent:

53091892, May 3, 1994

Filed:

Aug 14, 1992

Appl. No.:

7/929223

Inventors:

Bruce G. Marks - Lancaster PA
Andrew Good - Reamstown PA
Frank R. Ragland - Lancaster PA
Richard C. Bauder - Millersville PA

Assignee:

Thomson Consumer Electronics, Inc. - Indianapolis IN

International Classification:

G03B 4100
G03C 500

US Classification:

354 1

Abstract:

The present invention is an improvement in a method of screening a line screen slit mask color picture tube that includes coating a faceplate panel of the tube with a photosensitive material, inserting a slit shadow mask into the panel and exposing the photosensitive material by passing light from a line light source through a misregister correction lens and through the slits of the mask. The improvement comprises positioning a skew correction lens between the line light source and the misregister correction lens during exposure of the photosensitive material. The skew correction lens has a surface with a general overall cylindrical shape with deviations from the cylindrical shape being in the four corners of the skew correction lens.