Conventional shadow masks heat up and expand in large tube sets, resulting in inaccurate colour and blurred images. Shadow masks made out of the Invar alloy hold their shape and ensure true, focused colours. Found only in the better large tube sets.
a premium feature available on select television models that is designed to give the picture more brightness and a crisper appearance
Holes in the thin metal sheet behind the glass of the CRT surface corresponds to each phosphor dot on the inner surface of the CRT's faceplate, allowing the correct electron beam (red, green and blue) to hit the correct color phosphor for improved focus, brightness and color.
A monitor technology where light is emitted through a heat resistant metal sheet containing numerous holes. Basically, this thin sheet of metal has holes corresponding to each phosphor dot on the CRT and causes the correct red, green and blue electron gun beam to hit the correct color phosphor.
A special type of shadow mask, made out of Invar and alloy, that is able to withstand the high temperature generated by the electron beam. The Invar shadow mask allows the CRT to generate a brighter image than with the conventional shadow mask. An advanced Invar shadow mask improves brightness by 40 percent over the standard.
The shadow mask — a metal plate behind the screen that forces electron beams to hit the proper colored phosphors (red, green or blue) — is made of invar, a heat-resistant alloy of nickel and iron. Benefit: The mask is not distorted by heat. You get a better, longer-lasting color picture than with a standard iron shadow mask.
This is a feature that improves the quality of your picture on a Cathode Ray Tube television. Usually, as a TV gets hotter, a perforated metal called the shadow mask expands, causing the picture to blur. More expensive TVs use an alloy called Invar that does not lose its shape as it gets hotter.
