shadow mask


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shadow mask

[′shad·ō ‚mask]
(electronics)
A thin, perforated metal mask mounted just back of the phosphor-dot faceplate in a three-gun color picture tube; the holes in the mask are positioned to ensure that each of the three electron beams strikes only its intended color phosphor dot. Also known as aperture mask.

shadow mask

A thin screen full of holes that adheres to the back of a color CRT's viewing glass. The electron beam is aimed through the holes in the mask onto the phosphor dots. There are generally more holes per inch than the maximum resolution obtainable from that monitor. See slot mask.


References in periodicals archive ?
In the i-th shadow mask, the proposed method obtains a proper threshold value [t.
While aperture grille monitors are great for graphics, shadow mask technology produces a sharper text image," said Jim Witkowski, Cornerstone's chief hardware engineer.
Electroformed shadow masks will be provided with the system fixture.
Here we discuss an additive technology that performs material evaporation through shadow masks.
The features of the shadow masks are limited to the mask thickness and ability to hold the pattern and are generally used for features on the order of a millimeter or larger.