Electron beam substrate forming projection screen and its manufacturing method

摘要

The invention relates to a substrate (2) decorated with a first glass plate (1) for a projection screen and a manufacturing method thereof, the glass plate comprises a diffusion layer (2).Based on porcelain, glass materials made of glass materials with thickness of E1 d ', thickness of E1 d', thickness of not less than 5 μ m and not less than 20 μ m are based on Zinc Borosilicate and / or bismuth. The matrix is porous and the diffusion element is the porosity of a gas or vacuum (...).The characteristic size, especially the diameter, is at least 0.2 μ M L ', the first glass sheet assembly and the diffusion layer having at least - 75% light transmission factor-At least 30% and at least 1% - at least 0.4% gain