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
shadow mask in American English
noun
Television
a perforated metal plate situated behind the faceplate of a color television picture tube and having holes aligned to insure that each of three electron beams strikes only its corresponding red, green, or blue phosphor dot
Also called: aperture mask
Word origin
[1950–55]This word is first recorded in the period 1950–55. Other words that entered Englishat around the same time include: Common Market, bleep, drip-dry, point-of-sale, speech recognition
Examples of 'shadow mask' in a sentence
shadow mask
Here, we propose a method for transferring various shapes of tiles, which can be defined with a shadow mask.
Jaekyoung Kim, Hyunsik Yoon 2018, 'Transfer Tiling of Nanostructures for Large-Area Fabrication', Micromachineshttps://www.mdpi.com/2072-666X/9/11/569. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)