A SiO_2-ZrO_2 Gel Film Doped with Organic Pigments Made by the Sol-Gel Method for Contrast Enhancement of Color Picture Tubes

摘要

An organic pigment glass gel composite thin-filter made by the sol-gel method has been developed and commercialized for color picture tubes (CPT). It's formed on the outside of the CPT screen and pro- vides remarkable improvements in contrast and color purity. It also has sufficient hardness and stability for practical use.