A perforated metal screen situated directly behind the phosphor screen in certain types of colour television tube, having a pattern of precisely located holes through which the electron beams pass so as to strike the correct dots on the phosphor screen.
（某些类型彩色显像管的）遮光板，荫罩，孔板
Example sentencesExamples
Both provide excellent viewing experiences depending on your preference for an aperture grille or shadow mask display.
The convergence test measures how accurately the red/green/blue electron guns are firing at the shadow mask - in this test, white lines should appear if the convergence is correct.
The faceplate portion has a screen to display an image, and the panel portion has a shadow mask installed therein.
They are arguably the highest performing CRTs on the market (if comparing high-end aperture grille monitors to high-end shadow mask monitors).
There are two basic cathode ray tube technologies: aperture grille and shadow mask.
Synonyms
matte, photomask, masking, masking tape
Definition of shadow mask in US English:
shadow mask
noun
A perforated metal screen situated directly behind the phosphor screen in certain types of color television tubes, having a pattern of precisely located holes through which the electron beams pass so as to strike the correct dots on the phosphor screen.
（某些类型彩色显像管的）遮光板，荫罩，孔板
Example sentencesExamples
There are two basic cathode ray tube technologies: aperture grille and shadow mask.
The convergence test measures how accurately the red/green/blue electron guns are firing at the shadow mask - in this test, white lines should appear if the convergence is correct.
Both provide excellent viewing experiences depending on your preference for an aperture grille or shadow mask display.
They are arguably the highest performing CRTs on the market (if comparing high-end aperture grille monitors to high-end shadow mask monitors).
The faceplate portion has a screen to display an image, and the panel portion has a shadow mask installed therein.