A METHOD OF MANUFACTURING A PHOSPHOR SCREEN OF A CATHODE RAY TUBE

摘要

The invention relates to a method of manufacturing a phosphor screen (2) of a cathode ray tube (CRT), which comprises providing a reflective metal back layer (10) by applying a metal flake suspension on top of a structured black matrix layer (8) and phosphor (9). The metal flakes have an average dimension of at least two times the phosphor (9) particle dimension, such as about 10-100 (m. Advantageously, an aqueous metal flake suspension further comprises at least one polymer having good film-forming properties and at least one polymer having acidic groups. The acidic groups of the binder will react with dissolved aluminium salts and form a cross-linked polymer matrix which provides an insoluble and mechanically strong back layer. A conductive layer (11) may preferably be applied on top of the back layer (10) to improve the electrical conductivity of the back layer (10).