|Why no other monitor
comes closer to reality
Imagine we are inside your monitor looking at the
backside of your computer screen. If you look at the magnifying
glass to the right the small dots you see are called phosphors -
the technology that creates the images on your monitor screen.
What makes our monitors produce better images?
One of the differences that make Hitachi monitors
so unique is the way we arrange our phosphors. If you look carefully
at the screen of a Hitachi monitor, you will see clearer, crisper
images - even at the edges and corners where other monitors tend
to become fuzzy. In addition, the color will look more vivid with
superior focus and clarity. We do this by using Shadow Mask technology.
If you look to the right, you will see the layout of a Shadow Mask
and Aperture Grill.
|The drawing on the left
shows the aperture grill, which is how some other monitor manufacturers
achieve color images. The picture on the right is Hitachis shadow
mask technology with our famous dot trio rounded phosphor dots. We
at Hitachi feel that the Invar shadow mask technology we utilize provides
better color purity that is more stable and dependable than aperture
grill. Furthermore, aperture grill monitors contain two support wires
(called damper wires) that hold the vertical lines together. These
two damper wires are frequently visible as lines running across your
screen and images, providing a distracting image distortion. With
Hitachis Invar shadow mask - you will never see these lines
distorting your screen images.
|By using Invar shadow mask
technology, a high precision element that keeps the electrons from
hitting the wrong phosphor dots, Hitachi monitors provide greater
color purity than other monitors.
By using a special metal with a very low expansion rate called Invar,
Hitachi eliminates the displacement distortions that some monitors
(usually the lower quality, less expensive ones) face when their shadow
masks heat up and warp slightly.
|Why our dot pitch produces better
The thing that makes our images so crisp and our
colors so real is our Enhanced Dot Pitch (EDP), which we use on
all our latest monitors. In the drawings to the right, you see magnified
images of the dot phosphors that compose the images on your Hitachi
monitor. The dot pitch is the distance between the adjacent red/green/blue
phosphor groups. To simplify things, with any monitor, the smaller
the dot pitch, the sharper the images will be. When looking
at Hitachis EDP dot configurations, at the right, please notice
that the horizontal and vertical resolutions are more uniform and
the dots are larger. This combination provides several important
advantages. First, this creates a larger phosphor area, which creates
higher maximum brightness and better control of brightness and contrast.
Second, the uniformity of resolution makes small text more legible.
Finally, the larger dots give you an increased color purity margin,
which is why images and text are clearer on a Hitachi monitor.
Hitachi monitors use either our proprietary A-EDF
(Advanced Elliptical Aperture, Dynamic Focus) or our proprietary
PrecisionFocusTM electron gun technology. These guns
automatically adjust the focal length while the beam is scanning.
In addition, it also controls the cross sectional shape of the beam.
This ensure crisp, clear images both mid-screen and in the corners.
In addition, Hitachis PrecisionFocusTM technology
is 10% sharper than the previous state-of-the art. By inserting
two additional focus lenses and improving the beam size, the PrecisionFocusTM
technology available on many of Hitachis monitors provides
an even higher level of brightness and clarity.
Every Hitachi monitor is carefully designed to meet or exceed
rigid safety and ergonomic standards. So, you can be confident that
the one you buy will fully comply with important electrical and mechanical
safety standards, low radiation, and flicker-free images. In fact
youll find that the way we eliminate flicker is a big reason
why user comfort is a major Hitachi advantage. If you look at the
specifications on Hitachis monitors, you will notice that the
refresh rates are all VESA standard (85 Hz) and above - even at high
resolutions. This means that you will have a rock solid image without
annoying flicker - which is frequently linked to eyestrain and headaches.
In the final analysis, Hitachi monitors combine the quality and comfort
critical for the long hours people spend viewing their monitors. Thank
you for taking the time to get to know Hitachi monitors and we hope
this technical tour has been helpful in understanding our products.
For further information we encourage you to call or email our Customer
Relations department (information available in the "Contact"
portion of our site) and one of our representatives will be happy
to provide additional information and assistance.
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