Controls News 13
102
Products:
More value for money with touch panels
The STN-LCD displays can only be read directly from
the front and in a directly vertical view. Bad luck
for those who are much taller or shorter than the
average user. It’s not very easy for them to point out
something to colleagues on the touch screen. In
addition, the visibility for units with a CCFL back-
system Characteristics of TFT LCDs: good readability from any angle and sharp images in bright light
Expensive assembly systems are required to be
able to read the panel better to compensate for
the «cheap» STN LCD technology. Now it is only
in the way...
From «me-too» technology
to 5.7" added value technology
What would it be worth if all these LCD
related weaknesses are taken out of the
5.7"
panel? If even at oblique angles and
in bright ambient light, you have an eye
wateringly sharp image and high resolu-
tion? If an LED backlight increases the life
of the panels for years?
At Saia-Burgess in 2007, we were con-
vinced that it was worth a lot, but that
it shouldn’t cost the customer more.
The management at Saia-Burgess dealt
personally with the top manufactur-
ers and visited factory stores in Japan.
There we found the technical solution
in the form of the 5.7" TFT VGA display
with LED backlight. Due to the low sales
volume, the cost was very high. None of
the established manufacturers wanted
the extra costs associated with mass
production of the 5.7" size, so progress
was blocked.
10
years of Saia® S-Web:
Practice examples from the automation webcode
en1399b
That was a chance for Saia-Burgess because we see
everything in terms of «customer value and quality».
In 2008 we added to the Saia® System Catalogue
the 5,7" TFT VGA-Display with LED-Backlight accord-
ing to standard specifications. The price for the 5.7"
devices stayed the same. The additional costs for the
LCD technology were not passed on to the customer.
We were rewarded with enormous growth and very
satisfied customers. Meanwhile, the purchase prices
for the 5.7" TFT LCD screens fell. The differences
between TFT VGA and QVGA STN are now slim. The
price difference between a «lean» product and a «non
lean» product is 20 euro. Who wants to sacrifice the
great advantages of the new technology?Who wants
to have to replace a panel in a building because of a
faulty LCD for the sake of another 20 euro?
light in a bright environment is limited. This is
usually compensated by the fact that the maximum
contrast is set. This, however, reduces the lifetime
of the LCD display, meaning it needs to be replaced
once or twice in the life cycle of the plant
Properties of STN LCDs: hard to look at from oblique angles
Low visibility in ambient light
