Purpose

1
Introduction

• Purpose
• Discuss the influence of extreme temperatures on
  LCDs
• Objective
• Review the effects of extreme temperatures on
  standard LCD displays
• Discuss how Lumexs new Extreme Temp LCD
  technology can improve efficiency and reliability
  for hostile environment applications
• Outline the advantages of a single supplier
  resource for design integrity
• Content
• 12 Pages
• Learning Time
• 10 Minutes

Welcome to the Lumex Extreme Temp LCD Technology
training module. This module highlights details
on Lumexs new cutting-edge, high / low
temperature LCD custom design technology, and the
many advantages this technology provides when
designing applications, specifically applications
operating in a hostile ambient environment. A
pioneer in the design and manufacture of
user-interface technology for over 30 years,
Lumex is a leader in standard, semi-custom and
custom LCD display technology.
2
Select Technology Best Suited for your
Environment
There is a growing global demand for user
interface technology that can perform in extreme
cold and extreme heat conditions. Applications as
diverse as military, freezer, gas pumps and fuel
meters, non-automotive transport and non-climate
controlled facilities require accurate displays
able to perform consistently in even the most
challenging of environments. LCDs designed into
these types of applications must meet a host of
demanding challenges, such as shock and
vibration, varying lighting conditions and
extreme temperature changes.
3
Influence of Extreme Temp on LCDs

• Extreme temperature affects visual performance
• LCDs tend to lighten up, bleach out or go dark in
  extreme temperatures

The liquid crystal material in a standard LCD can
be permanently damaged by extreme temperatures.
The molecules within the LCD can form into solid
crystals, and bubbles can form on the display.
4
Lumex InfoVue High/Low Temp LCD Technology
Extreme conditions bring with them a unique set
of engineering challenges. It can be hugely
helpful to find a technology supplier who can not
only provide the user interface component but
also professional insights as to how to integrate
this component into larger systems. Lumex has
been successful in breaking through the barriers
faced by design engineers, helping them reach new
heights in developing user interface solutions
that provide cost-savings, superior reliability,
and enhanced visual performance in even the most
challenging of environments.
5
Technology Drivers

• Proprietary LCD fluid mixture -40C to 85C
• Backlight available up to 100C
• Backlight brightness
• High bright for increased night visibility
• Not high power LEDs, reduces thermal management
  requirement
• Thin profile, low power integrated heater

In order for a display to work instantly and
consistently within a hostile environment,
several technologies need to be brought together
to work in parallel to get the best performance.
These include the liquid crystal mixture itself,
the operating heat threshold of the backlight
which can be prone to fail at high temperatures,
the size and power draw of the heater for extreme
cold temperatures and ultimately the capability
of any supplier to integrate all of these
technologies seamlessly. Lumex is able to bring
all of these technologies together into a single
integrated solution with either standard or
custom displays.
6
How do we know it works?

• Vibrated at 40G for six days
• Constant cycling between -40C to 100C for full
  duration
• 1 hour at max temp, 1 hour at min temp
• Temp transition from high to low over 7-12
  minutes

Lumexs extreme temperature displays have been
rigourously tested in order to ensure instant and
consistent performance in the field. The test was
designed to exceed the operating environment and
ensure that the design would provide best in
class performance in the field.
7
Additional Design Enhancements

• Numeric displays, character modules and graphic
  modules up to 640 x 480
• English, simplified Chinese, Japanese and
  European font sets
• TN, HTN, EBTN, STN, FSTN and DFSTN liquid crystal
  fluids
• Various assembly technologies, including chips
  on board, chip on glass, chip on tab
• Backlight options EL, CCFL, Edge Lit LED and
  Chips on Board
• Adding in switches, keypads and indicator lamps
• Various connection methods pins, heat seal
  connector (HSC) flexible flat cable (FFC) or
  flexible printed circuit (FPC) to satisfy
  virtually any mounting configuration.

Lumex can enhance any LCD product with a wide
variety of design enhancements to achieve that
unique point of difference and meet design
engineers needs.
8
Customer Demands Dictate Design
For many customers, standard LCD product
offerings can be the simple solution to what is
often the greatest challenge to the most visible
and important part of any design projectthe user
interface. Increasingly, product differentiation
has become a critical element in creating a point
of difference in todays marketplace. More and
more, customer demands are driving the need for
unique displays.
9
A One-Stop Solution for LCD Designs

• Discussions with Lumexs Technical Design
  Specialists will help determine the criteria
  that best suits your design needs, including
• Layout
• Display size
• Liquid crystal fluid type
• Voltage
• Duty
• Bias
• Temperature
• Backlighting
• Drivers
• Connection method
• Packaging requirements

Lumex has been supporting the full range of
Industrial Control companies throughout the world
for the last 30 years. Our customers are the
global leaders and technology innovators of their
market segments. Industrial control companies
rely on Lumex to be able to supply a full breadth
of optoelectronics and displays as well as
identify opportunities to create feature-rich,
high value solutions.
10
A One-Stop Solution for LCD Designs
Lumex product families ? Extreme Temp LCDs ?
Higher Power LEDs ? SMT LEDs ? Through-Hole
LEDs ? Infrared Devices ? LED Displays ? LED
Arrays ? LED Backlights ? Monochromatic LCDs
? TFT Capacitative Touch LCDs
Because use of optoelectronics is expanding
rapidly in the industrial controls market,
customers are also looking for a single supplier
partner like Lumex to ease the burden of sourcing
multiple vendors.
11
Benefits of a Single Supplier Partner

• Breadth of products means reduced number of
  vendors
• Leveraging Lumexs design expertise reduces your
  engineering time
• Testing multiple interacting systems means faster
  time to market
• The newest technology means the most feature
  enhanced, high performance industrial controls
  solutions on the market

Why do design engineers choose Lumex? Lumex has
been supporting user-interface applications with
leading technology longer and more consistently
than anyone else in the industry. Lumex can be
the single supplier for both standard, products
as well as fully integrated engineered solutions.