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The sorting out of the three beams so that they produce images of only the intended primary colour is performed by a thin steel mask that lies directly behind the phosphor screen. This mask contains about 200,000 precisely located holes, each accurately aligned with three different coloured phosphor dots on the screen in front of it.
What else can I help you with?
Why is the EHT voltage higher in a color TV than in a monochrome TV?
Colour picture tubes use a shadow mask, or aperture grill, to ensure each electron beam lands on theright phosphor - same principle as a pin hole camera. But the shadow mask blocks a significant proportion of the beam. A higher accelerating voltage helps overcome that effect.
What is the function of a shadow mask in a color television?
To block the 3 beams to prevent the wrong beam from hitting the wrong phosphor.
What is shadow mask method?
The shadow mask is one of two major technologies used to manufacture cathode ray tube (CRT) televisions and computer displays that produce color images. All early color televisions and the majority of CRT computer monitors used shadow mask technology. A shadow mask is a metal plate punched with tiny holes that separate the colored phosphors in the layer behind the front glass of the screen. Three electron guns at the back of the screen sweep across the mask, with the beams only reaching the screen when they pass over the holes. As the guns are physically separated at the back of the tube, their beams approach the mask from three slightly different angles, so after passing through the holes they hit slightly different locations on the screen. The screen is patterned with dots of colored phosphor positioned so they can only be hit by the beam from only one of the guns passing through only one of the holes. For instance, a particular spot on the screen can only be hit by the beam from the "blue gun" passing through a particular hole in the mask. This arrangement allows the colored guns to address individual dots on the screen, even though their beams are much too large and too poorly aimed to do so without the mask in place. The red, green, and blue phosphors for each pixel are generally arranged in a triangular shape (sometimes called a "triad"). For television use, modern displays (starting in the late 1960s) use rectangular slots instead of circular holes, improving brightness
Does shadow the hedgehog have a son?
No Shadow doesn't have a son,Shadow is a TV character.Shadow was made by Robotnik's grandfather .
What are the ratings and certificates for Behind the Mask - 1999 TV?
Behind the Mask - 1999 TV is rated/received certificates of: Australia:PG UK:PG
What are the release dates for The Mask of Sheba - 1970 TV?
The Mask of Sheba - 1970 TV was released on: USA: 9 March 1970
What are the release dates for Behind the Mask The Queen - 2007 TV?
Behind the Mask The Queen - 2007 TV was released on: USA: October 2007
When did Rain Shadow - TV series - end?
Rain Shadow - TV series - ended on 2007-11-18.
When was Rain Shadow - TV series - created?
Rain Shadow - TV series - was created on 2007-10-07.
What are the ratings and certificates for Behind the Mask - 1992 TV?
Behind the Mask - 1992 TV is rated/received certificates of: USA:TV-PG (video rating)
What are the release dates for Behind the Mask of Zorro - 2005 TV?
Behind the Mask of Zorro - 2005 TV was released on: USA: 3 November 2005
What are the ratings and certificates for In My Sister's Shadow - 1998 TV?
In My Sister's Shadow - 1998 TV is rated/received certificates of: Iceland:12
