Cathode Ray Tube Display

Cathode Ray Tube DisplayOperations and Applications

What is CRT?Cathode Ray Tube (CRT) is a vacuum tube containing one or more electron guns, and a fluorescent screen used to view images.

Brief History of CRT

The experimentation of cathode rays is largely accredited to J. J. Thomson.

The earliest version of the CRT was invented by the German physicist Ferdinand Braun.

The first commercially made electronic television sets with cathode ray tubes were manufactured by Telefunken in Germany in 1934.

Operations of a CRT1. Cathode Ray Tube2. Electron guns3. Electron beams4. Deflection yoke5. Phosphor dot6. Shadow mask /Aperture Grille7. Glass Lining8. Pixel

Shadow Masks and Aperture Grilles

Shadow Masks and Aperture Grilles (Close Up)

How does it CRT works?The electron guns blaze across the screen, row by row, illuminating phosphors in their wake. Varying the beams' intensity strengthens or weakens the glow from a given phosphor dot; by careful manipulation of every one, the triads and pixels, seen by the eye as single units, create the illusion of different-color dots.

Illustration

CRT Display at 10,000 fps

Applications

Television (Obsolete) Monitors (Obsolete)

Applications

Oscilloscopes RADARs