CATHODE RAY TUBE HAVING A REDUCED DIFFERENCE IN LIGHT TRANSMITTANCE BETWEEN A CENTRAL REGION AND A PERIPHERAL REGION OF A PANEL FACE THEREOF

摘要

A display tube having a glass front panel, an inner surface of the front panel carrying a phosphor pattern embedded in a black matrix, wherein a glass front panel has an outer surface with a transparent plastic sheet adhered thereto, the transparent plastic sheet being adhered by means of a pressure-sensitive adhesive, the assembly of plastic sheet and adhesive having a first transmittance T1 in an area corresponding to a central region of said panel and a second, higher transmittance T2 in an area corresponding to a peripheral region of said panel.