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Chapter: Television and Video Engineering - Essentials of Color Television

Color Television Display Tubes

The color television picture tube screen is coated with three different phosphors, one for each of the chosen red, green and blue primaries.

COLOR TELEVISION DISPLAY TUBES

 

The color television picture tube screen is coated with three different phosphors, one for each of the chosen red, green and blue primaries.

 

The three phosphors are physically separate from one another and each is energized by an electron beam of intensity that is proportional to the respective color voltage reproduced in the television receiver.

 

The object is to produce three coincident raster’s with produce the red, green and blue contents of the transmitted picture.

 

While seeing from a normal viewing distance the eye integrates the three color information to convey the sensation of the hue at each part of the picture. Based on the gun configuration and the manner in which phosphors are arranged on the screen, three different types of color picture tubes have been developed.

 

These are:

Delta-gun color picture tube

Guns-in-line or Precision-in-line (P-I-L) color picture tube.

Single sun or Trinitron Color picture tube.


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