Tinted Substrate Glass for Plasma Display Anti Glare
Original Publication Date: 1983-Feb-01
Included in the Prior Art Database: 2005-Feb-06
Reflection measurements on an AC plasma display device indicate that 75 percent of the total ambient light reflection is from the internal structure of the display (metallurgy, dielectric/gas interfaces, etc.). The reflections from the internal surfaces can be reduced by using tinted glass for the front substrate of the display. Transmission characteristics of the front substrate glass can be broadband or passband attenuation, with the light transmission maximum at the wavelengths of the plasma discharge spectrum. In either case, ambient light reflected from the internal surfaces must pass through the tinted substrate twice, while light from the discharge sites passes through the substrate only one time. This is an effective method for reducing internal reflections with minimum impact on the brightness of the plasma display.