Advanced Imaging


Advanced Imaging Magazine

Updated: January 12th, 2011 10:01 AM CDT

Cool and Bright

Indoors and out, LEDs provide more light with less heat
The MicroLens light guide
© Global Lighting Technologies
The MicroLens light guide from Global Lighting Technologies lights nine discreet areas of this thermostat: the main LCD area, characters and directional symbols at the top and sides of the unit (A-F), and keypad buttons at the top and bottom (G-H).
Smart Force Linear Driver
© Endicott Research Group
The Smart Force Linear Driver from Endicott Research Group is used with the company’s LED rails. The driver is less than 8mm in height.
white LED  by OSRAM Opto Semiconductors
© OSRAM Opto Semiconductors
OSRAM Opto Semiconductors has added a new white LED to its Golden Dragon® ARGUS® family.
amorphous-silicon thin-film-transistor liquid crystal display
© NEC Electronics America
One of NEC Electronics America’s four new amorphous-silicon thin-film-transistor (TFT) liquid crystal display (LCD) modules featuring super-transmissive natural light TFT technology.
NEC 2.7 -inch display for mobile applications
© NEC Electronics America
One of NEC’s three new 2.7-inch displays for mobile applications. They offer high luminance and high contrast ratios.
A 4.3
© DuPont Displays
A 4.3" WQVGA OLED display printed by DuPont Displays using its own materials and containment technology. The LTPS backplane was supplied by CMO/CMEL Corporation. DuPont Displays

By Barry Hochfelder

NEC has produced 12 new products in the past 15 months or so, ranging from 2.7-inch to 15-inch transflective solutions for kiosks, drive-up windows, ATMs, portable medical devices and portable test and measurement instruments.

NEC's super-reflective natural light (SR-NLT) offers a choice of two operating modes depending on the outdoor light environment: the Transmissive Mode, which uses the module's backlight as a light source, and the Reflective Mode, which employs ambient light. Simply turning the backlight on or off changes modes. This type of LCD features a high-level combination of transmissivity in the Transmissive Mode and reflectivity in the Reflective Mode, making it ideal for outdoor light conditions. The Reflective Mode actually uses ambient light as the display's light source instead of the module backlight, saving battery life in PDAs and other mobile terminals and handsets.

"Typically, we use SR in smaller sizes [four inches and smaller]," Dunhouse says. "It's application-based and meant to be used indoors with the backlight on or outdoors with the backlight off. It's primarily aimed at mobile displays."

The company's Super-transmissive (ST) is based on normal transmission to an LCD module, he adds. "You take an amorphous silicon LCD and add enhanced backlight [a proprietary coating] to achieve what behaves like transmissive. The goal is to maintain contrast in any light."

DuPont uses direct bonding for LCD enhancement, which provides both improved outdoor viewing and ruggedization. The technology optically bonds an anti-reflective glass, plastic or touch sensor directly to the front of a flat-panel display.

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