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 addition, large size televisions can now be made with amorphous silicon transistors using low resolution shadow-mask technology.
The circuits are patterned on a glass substrate with laser-ablated polymer shadow-masks.