Richard A Roland

US Patent:

55192831, May 21, 1996

Filed:

Nov 16, 1994

Appl. No.:

8/341924

Inventors:

Stephen T. Opresko - Lancaster PA
Richard LaPeruta - Lititz PA
Richard E. Roland - Conestoga PA

Assignee:

Thomson Consumer Electronics, Inc. - Indianapolis

International Classification:

H01J 2906
H01J 2994

US Classification:

313479

Abstract:

The present invention relates to a CRT 10 having an evacuated envelope comprising a funnel 11 sealed at one end to a faceplate panel 12 with a luminescent screen 14 on an interior surface thereof. A color selection electrode 16, mounted on a frame 19, is disposed within the envelope in proximity to the screen. An internal magnetic shield 22, is secured to the frame of the color selection electrode, and is spaced from and extends along at least a portion of the funnel. The magnetic shield has a plurality of openings 32 therethrough. An evaporable getter 28 is disposed within the envelope adjacent to the exterior surface 26 of the magnetic shield 22. The magnetic shield is improved by having tabs or louvers 36, 38, 136, 138, associated with the openings, for restricting the deposition of a film of getter material 30 to the exterior surface 26 of the shield 22. In a second embodiment, two magnetic shields 122, 222, with openings 132 and 232, respectively are attached to the frame 19 of the color selection electrode 16. The openings 132 and 232 are non-aligned, thereby restricting the getter film to the exterior surfaces to the two magnetic shields.

US Patent:

55414745, Jul 30, 1996

Filed:

Nov 22, 1994

Appl. No.:

8/345731

Inventors:

Richard LaPeruta - Lititz PA
Richard E. Roland - Conestoga PA
Stephen T. Opresko - Lancaster PA

Assignee:

Thomson Consumer Electronics, Inc. - Indianapolis IN

International Classification:

H01J 1970

US Classification:

313481

Abstract:

The present invention relates to a color CRT 10 having an evacuated envelope 11 includes a funnel 15 sealed at one end to a faceplate panel 12. A luminescent screen 22 is provided on an interior surface of the panel. A color selection electrode assembly 27 is disposed within the envelope in proximity to the screen. An internal magnetic shield 30, having an exterior surface 32, is secured to the color selection electrode assembly and is spaced from and extends along at least a portion of the funnel. A getter spring assembly 33 is disposed within the envelope to deposit a film of getter spring material onto the exterior surface 32 of the magnetic shield 30. The getter assembly 33 is improved by being detachably attached to the color selection electrode assembly 27 and prevented from rotating by an orientation plate 60 having a projection 70 with a flat contact surface that bears against the color selection electrode assembly.