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In computer terms, Trinitron was the brand name for Sony's line of high-quality aperture-grille-based Cathode Ray Tube (CRT) monitors. This technology provided superior brightness, contrast, and sharpness compared to standard shadow-mask CRTs of its era, making Trinitron monitors highly regarded for professional applications like CAD/CAM, medical imaging, and computer graphics.

Key Features of Trinitron Technology:

Aperture Grille: Instead of a shadow mask with tiny holes, the Trinitron used a a steel sheet with vertical slots. This design allowed more of the electron beam to reach the screen, resulting in a brighter and more vibrant image.

Vertical Phosphor Stripes: The screen's phosphors were arranged in continuous vertical stripes, not dots. This alignment with the aperture grille contributed to a sharper image with better color purity.

Single Electron Gun: Unlike most other color CRTs that used three separate electron guns, the Trinitron design utilized a single-gun assembly with three cathodes, simplifying the focusing process and generally producing a sharper image.

Cylindrical Screen: Trinitron tubes had a unique cylindrical shape, curved horizontally but flat vertically. This design gave them a distinct look and helped with focus consistency across the screen, though it made them heavier due to the need for thicker glass.

Support Wires: A minor drawback was the need for one or two thin, horizontal tungsten stabilizing wires across the grille to prevent the thin wires from shifting. These wires were sometimes visible as faint lines on computer monitors, where scan lines were closer together than on TVs.