tronics NvMethod for producing phosphor screens, and colour cathode ray tubes incorporating sameWO1997048138A2 *28 May 199718 Dec 1997Philips Electronics NvVisible light emitting devices including uv-light emitting diode and uv-excitable, visible light emitting phosphor, and method of producing such devices* Cited by examinerClassifications U.S. Classification250/492.1, 250/504.00R, 250/494.1, 396