A thin sheet of metal with small holes poked through it used to focus the light from the electron beam on most CRT monitors. See also Slot Mask.
Central component in all color television screens and computer monitors. The shadow mask is a thin metal plate covered with very small holes that define the pixels in a CRT. It is mounted inside the screen close to the front glass. Without the shadow mask it is not possible to project a color image on the screen.
Inside the color monitor just behind the screen, it is drilled with small holes, each of which corresponds to a triad. The shadow mask helps guide the electron beams so that each beam hits only one phosphor dot in the triad.
A metal plate with holes in it that selectively blocks the beams from the electron guns in the back of a CRT.
a metal plate built into the front area of the CRT, next to the phosphor layers
a metal plate with holes through which electron gun passes beams of electrons to generate the pixels on the screen
a perforated metal sheet inside the TV, which has finely positioned holes to restrict light flow
a screen full of tiny perforations
a thin metal screen filled with very small holes
a thin sheet of metal punctured with millions of tiny holes
a thin sheet of perforated metal behind the screen that restricts electron flow, each hole in the sheet corresponding to a single pixel
a thin film metal plate (placed directly in front of a colour CRT's phosphor face) that blocks stray electrons from exciting nearby colour dots. A slot mask is a variation of the shadow mask.
This is the older and more common monitor technology. I think it is much better than Aperture Grill. Unfortunately there is nowhere so sit your Office Assistant.
Technology used to assure that monitor screen phosphors are activated correctly by preventing the electron stream from straying off course. Consists of a metal panel pierced with millions of perfectly spaced holes, inside a monitor just behind the glass screen.
A thin screen full of holes that adheres to back of a color CRT's viewing glass. The electron beam is aimed through the holes in the mask onto the phosphor dots.
The most popular CRT monitor technology. The shadow mask itself is a metal grid. The monitor's electron beam is shot through the grid, which positions the beam so that it correctly excites the red, green, and blue phosphor dots that ultimately comprise the picture you see on the screen. (4/99)
A sheet of metal with round holes across its surface, used to direct the electron beam in a CRT. When the beam shines through the holes it only strikes the phosphors of a desired color.
In monitors, the shadow mask is a metal plate with holes in it that focuses the beams from the electron guns at the back of the CRT. The distance between these holes is called the dot pitch.
On a direct-view television picture tube, this is the perforated screen that is bonded behind the front glass surface, which limits color distortion (or blooming) and also improves contrast. See also CRT.
This is usually an invar mask which acts to block the electron beam from striking the wrong phosphors in a CRT. The beam passes through holes in the mask to strike the correct phosphor while shadowing neighbouring phosphor. i.e. it prevents a beam intended to strike a red phosphor from striking a neighbouring green phosphor by causing an electron shadow over the green dot.
A Shadow Mask is a metal plate filled with holes that perfectly match the phosphor groupings in a colour television. The shadow mask, or aperture grill as it's sometimes known, is used to keep the electron beams from straying into other phosphor groupings in a colour cathode ray tube. Often the shadow mask is installed as part of the phosphor addition process because the tiny holes need to be perfectly aligned. A slight variance in the position of the shadow mask can greatly affect screen performance.
The shadow mask is one of two major technologies used to manufacture cathode ray tube (CRT) televisions and computer displays that produce color images (the other is aperture grille). Tiny holes in a metal plate separate the colored phosphors in the layer behind the front glass of the screen. The holes are placed in a manner ensuring that electrons from each of the tube's three cathode guns reach only the appropriately-colored phosphors on the display.