Etching a substrate: processes – Forming or treating mask used for its nonetching function
Patent
1996-04-01
1998-03-24
Breneman, R. Bruce
Etching a substrate: processes
Forming or treating mask used for its nonetching function
216 41, 216 56, 313403, 430 5, B44C 122, H01J 2906
Patent
active
057308870
ABSTRACT:
In accordance with the present invention, a display apparatus 8 comprises a color CRT 10 having an evacuated envelope 11 with a faceplate panel 12 sealed to one end of a funnel 15 that is closed at the other end by a neck 14. The faceplate panel has a luminescent screen 22 on an interior surface thereof. A shadow mask 25 is located in proximity to the screen. The shadow mask comprises a metal sheet having a central portion and an exterior portion with a plurality of apertures 40, 43 therethrough. An electron gun 26 is disposed within the neck for generating and directing electron beams 28 toward the screen. A deflection yoke 30 is disposed around the envelope at the junction of the neck and the funnel. The yoke deflects the beams to scan a raster across the screen. The display apparatus is improved other prior devices in that the apertures 43 in the exterior portion of the mask, on the screen-facing side thereof, have openings 45 that are elongated in the direction of the incident electron beams and offset relative to the corresponding openings 44 on the electron gun-facing side of the mask. A method of making the present mask also is disclosed.
REFERENCES:
patent: 3519869 (1970-07-01), Kuniyoshi
patent: 3705322 (1972-12-01), Naruse et al.
patent: 3973965 (1976-08-01), Suzuki et al.
patent: 4168450 (1979-09-01), Yamauchi et al.
patent: 4429028 (1984-01-01), Kuzminski
patent: 4518892 (1985-05-01), Thoms
patent: 4528246 (1985-07-01), Higashinakagawa
patent: 4588676 (1986-05-01), Moscony et al.
patent: 4632726 (1986-12-01), Thoms
patent: 4662984 (1987-05-01), Ohtake et al.
patent: 4689114 (1987-08-01), Ohtake et al.
patent: 4743795 (1988-05-01), Thoms
patent: 5484074 (1996-01-01), Deibler et al.
patent: 5526950 (1996-06-01), Tago et al.
European Search Report.
Search Report & Opinion, Shingapore.
Eshleman Craig Clay
Gorog Istvan
Marks Bruce George
Simpson Theodore Frederick
Wetzel Charles Michael
Adjodha Michael E.
Breneman R. Bruce
Coughlin Jr. Vincent J.
Irlbeck Dennis H.
Thomson Consumer Electronics Inc.
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