Method of assembling a contrast enhanced display

Plastic and nonmetallic article shaping or treating: processes – Mechanical shaping or molding to form or reform shaped article – To produce composite – plural part or multilayered article

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29 2511, 29 2513, B29F 108, H01J 920

Patent

active

041917251

ABSTRACT:
A transparent face plate for a bright display device, such as an airborne cathode ray indicator often viewed under high ambient light intensities, is bonded directly to the viewing face of the display device by a transparent bonding material dyed to provide an optical filter whose transmission characteristics, determined in part by the thickness of the colored bonding agent, are generally matched to the spectrum emitted by the phosphor within the cathode ray tube so as to provide an optimally contrast enhanced display. A unique assembly method and gasket arrangement are used to determine precisely the spacing between the face plate and the indicator viewing face and, therefore, the filter thickness, and to form a temporarily sealed cavity into which the colored or dyed bonding agent is injected and then polymerized.

REFERENCES:
patent: 2734142 (1956-02-01), Barnes
patent: 2857931 (1958-10-01), Lawton
patent: 3274421 (1966-09-01), Johnson
patent: 3873868 (1975-03-01), Robinder
patent: 3879627 (1975-04-01), Robinder
patent: 3946267 (1976-03-01), Lustig et al.

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