UN METODO DE FABRICAR UN TUBO DE RAYOS CATODICOS.

摘要

1509255 Cathode-ray tubes PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 8 Aug 1975 [12 Aug 1974] 33179/75 Heading HID To control the thickness of a black Al oxide layer on a C.R.T. screen, the local temperature of the tube is varied with position during vapour deposition of the A1 in a gaseous atmosphere. The thickness may be uniform or vary to compensate for variations in a shadow mask. The temperature is controlled either using a heating lamp or lamps and optionally a thermal radiation filter; or using gas or liquid heating or cooling.