Specifications

TRINITRON TECHNOLOGY
VIDEO MONITORS
553
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There's one additional advantage to the cylindrical screen: it
allowed development of the Aperture Grille. Because the
Trinitron screen is perfectly straight from top to bottom, there is
no vertical curve to follow.The Shadow Mask must follow the
precise curvature of the spherical screen. This calls for thick con-
struction and thousands of tiny horizontal cross-members prevent
millions of electrons from reaching the screen. Look at an operat-
ing Shadow Mask tube under a magnifying glass and you'll see
the shadows of tiny black crossbars all across the screen. The
Aperture Grille on the other hand is a series of vertical slits that
stretch unbroken from the top of the screen to the bottom. It has
no horizontal obstructions, so more electrons reach to the screen.
The picture is brighter. Colors have more vibrancy. Video images
achieve a depth and richness that more closely resembles real life.
What you see is the picture quality that has made the Trinitron
system famous.For screen brightness alone, the Aperture Grille
qualifies as the Trinitron tube's most important feature. But the
Aperture Grille has additional benefits.
For example, Shadow Mask tubes are prone to moire--the dis-
turbing interference between a pattern in the Shadow Mask.
Moire is most often visible as the flickering that shows up when a
plaid jacket comes on the screen. By its very simplicity, the
Aperture Grille minimizes moire.
The Aperture Grille's unbroken, vertical slits also minimize the
effects of gravity, which can spoil color purity by pulling a
ShadowMask out of alignment. Finally, the Aperture Grille resists
the "doming" effect. Doming can in place for more than a few
seconds. The electron beams begin to heat up portions of the
Shadow Mask, deforming it and permitting blotches of color dis-
tortion on the screen. This problem can be particularly severe in
media without much movement in the subject, such as computer
graphics. Fortunately, the Aperture Grille minimizes doming. Its
members are under constant tension, so deformation is mini-
mized. The Aperture Grille maintains color purity, no matter
what the subject matter.
After such immediate and widespread success, it was only natural
that the competition would try to imitate the Trinitron system.
Sure enough, over the course of two decades the competition has
been able to imitate one part of the Trinitron tube or another.
But they've never been able to imitate the system as a whole.
Because each part relates to every other part in a special way. For
example, without the depth of focus made possible by one large
lens, you can't design a cylindrical screen. Without the cylindrical
screen, you can't have an Aperture Grille. And without the
Aperture Grille, you can't get the brighter, more vivid Trinitron
color. It's an integrated system.
SONY
THE APERTURE GRILLE
Two decades ago, Sony showed the world a better way to watch television.
The outstanding brightness, sharpness and color purity of Sony's Trinitron
system soon found a place in a breathtaking array of professional video appli-
cations. And in 1973, the Trinitron system won perhaps the ultimate acco-
lade. It became the only color TV system ever to win a technical achieve-
ment Emmy Award for picture quality. It's fair to say that the Trinitron tube,
more than anything else, cemented Sony's reputation for high quality.Today,
video production and TV broadcasting studios use Sony Trinitron monitors
to evaluate their work. Executives use Trinitron monitors to show off com-
puter spreadsheets. Micro-surgeons monitor their work on Trinitron sets.
And Trinitron color radar CRTs guide passenger airline pilots past thunder-
storms. Its technology that makes Trinitron monitors the favorite of so many
demanding video professionals.
Emmy Award Winning Technology