wing knob - Developement, manufacturing and sales of plastic enclosures components and tuning knobs for the electronic industry and electric installations
44
Web: http://www.okw.com
E-Mail: KurzM@okw.com
Ineltec, Basel 04.-07.09.2001
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TURTLE NEWS January 2002
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Previous issues of Turtle News are available in the Internet as pdf files (www.okw.com; News; Turtle news).
4 TURTLE NEWS 6/2001
Typographical and other errors do not justify any claim for damages. 6/2001 e
The market for displays continues to
show high growth and potential for
the future. This development wing knob wing knob - Developement, manufacturing and sales of plastic enclosures components and tuning knobs for the electronic industry and electric installations is
characterised by an increasing
abundance of electronic devices and
aids. It is a question of optimally
visualising the Wing Knobs Catalog ? Monroe PMP - flood of available
information at
the man-machine
interface.
Nowadays, alphanumeric and
graphic LCD modules (Liquid
Crystal
Displays) are mainly used in standard OKW cases. LCD technology is based on a rotation of wing knob liquid molecules in an electrical field and, unlike
luminescent cathode ray tubes, requires additional illumination. The rotation leads to optical polarisation, with more or less light being able to pass
through
the molecules. This is used to
represent light and dark dots.
Thanks
to STN (Super Twisted
Nematic) glass technology, excellent
contrast
and an improvement in the
viewing angle can be achieved. wing knob In this
case the crystals rotate by 90°.
Higher resolutions can be achieved
through greater rotation of
the
crystals.
The spectrum of "alphanumeric"
displays ranges from extremely
compact displays with a character
height of 3 mm to 12 wing knob mm. Numerous
graphic LCD modules, some of them
mechanically compatible to alphanumeric
LCD modules, extend the
range of possible applications. The
resolutions available range from
80 wing knob x 16 pixels to 640 x 200 pixels.
LCD modules can deal with the
various fields of application through
the following possible variations:
Display colour:
· yellow mode (blue-black characters
against a yellow-green background)
Optimum visualisation and wing knob easy recognition required
Display techniques
· neutral mode (blue-black
characters against a silver
background)
· film black-and-white (black
characters against a light silver
background)
Backlighting techniques:
· LED (light-emitting diode)
Properties: long service life,
low voltage, high reliability
· EL panel (electroluminescent panel)
Properties: extremely thin design,
medium service life
· CFL (cold cathode tube)
Properties: very high light intensity,
suitable for large surfaces,
medium service life
Further distinguishing features are
the working temperature range and
the polarisers, for example
reflective. This means that the front
layer lets the light through
unimpeded, while the rear layer
behind the LCD panel reflects the
light. The standard working
temperature range is from -5° C
to 50° C.
The standard ranges of the
manufacturers are certainly
sufficient for many applications. The
Internet sites of the manufacturers
offer good sources of information
about the latest state of technology.
The list of graphic displays has
increased sharply in the last few
years.
Parallel to their standard
programmes, the manufacturers
offer customer-specific solutions for
LC panels and LC modules. All of the
basic data, such as LCD and PCB
technology, temperature ranges,
methods of contacting, lighting
variations and interface circuits can
be
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