Sparkle-free color display

Details Sparkle-free color display Sparkle-free color display

1989-01-17

1991-08-13

DeMeo, Palmer C.

Electric lamp and discharge devices

Cathode ray tube

Envelope

341 34, 358252, H01J 2989

Patent

active

050399071

ABSTRACT:
A color display is disclosed that has on an inner display surface a periodic pattern of luminescent deposits having a smallest deposit-to-adjacent-deposit pitch "P-D". The display has on an outer surface glare reduction means in the form of an undulating periodic pattern of light-scattering elements whose smallest element-to-adjacent-element pitch "P-E" is significantly less than the pitch "P-D" to avoid moire effects, but significantly greater than the longest wavelength of visible light to minimize diffraction effects. The color display according to the invention may comprise a color cathode ray tube havbing a touch panel on its front surface.

REFERENCES:
patent: 2746030 (1956-05-01), Schrecongost
patent: 3114668 (1963-12-01), Guiles
patent: 3652895 (1972-03-01), Tsuneta et al.
patent: 3851093 (1974-11-01), Sunstein
patent: 4542375 (1985-09-01), Alles et al.
patent: 4644100 (1987-02-01), Brenner et al.
patent: 4700176 (1987-10-01), Adler
patent: 4746914 (1988-05-01), Adler
patent: 4766424 (1988-08-01), Adler et al.
patent: 4791416 (1988-12-01), Adler
patent: 4794299 (1988-12-01), Chiodi et al.

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