shadow mask


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shadow mask

n
(Electronics) television a perforated metal sheet mounted close to the phosphor-dotted screen in some colour television tubes. The holes are positioned so that each of the three electron beams strikes the correct phosphor dot producing the required colour mixture in the image
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In other words, the shadow surface by the same CG light source is partitioned into one cluster, called as shadow mask.
Lin Oliver and Theo Baker's THE SHADOW MASK (9780545196949, $16.
On a flexible plastic sheet a bottom layer of electrodes was patterned using a shadow mask -- essentially a stencil -- to mark off one level of the circuit.
The HDTV system involves many technologies including: DSP, high-resistance magnetic tape, optical recording, laser technology, electrode processing, photoconductive film, optical design, computer-aided design, satellite transmission, large-size displays, shadow mask process and image quality evaluation methods.
The 3S series also includes a black matrix with an invar shadow mask, high contrast and an anti-static/anti-glare coating.
And, since the CFM110 features an "Invar" Shadow Mask, the image is free of aperture grille lines.
The NEC AccuSync monitors incorporate both shadow mask and flat shadow mask CRT technologies and deliver outstanding screen performance, fine dot pitch, high refresh rates and high resolution support.
By incorporating the ViewSonic PerfectFlat technology with a slot mask design, the GF775 offers the benefits of both shadow mask and aperture grille tubes to produce brighter, sharper images with superior focus and vivid color," said Sally Wang, Product Line Manager at ViewSonic.
To help improve picture quality all new models have darker screens, INVAR shadow mask and several higher-end models now have more power in the tube for a brighter picture.
There is a parallax effect when sighting through the outer test zones of a large mask because it lies a fraction of an inch in front of the TV tube's shadow mask.
NEC's Invar Shadow Mask improves contrast and makes each monitor up to 20 percent brighter than conventional CRTs without sacrificing focus quality.
The p1450 19-inch CRT monitor utilizes a new Invar shadow mask flat tube to reduce reflection while maintaining sharp text quality.