Industrial Mobile Displays
Higher LCD peformance
in a small package
Historically small-sized LCD modules, ranging in sizes from 1.x-inch to 4.x-inch, have been used in consumer electronic applications
such as digital cameras, cell phones and portable media players. Products within this space change frequently as consumers demand
more sophisticated, feature rich products. Thus within the consumer space the displays that go into these products rapidly become
obsolete. Due to this rapid product turnover in the consumer space and the rapid obsolescence of LCDs designed for the consumer
market, medical and industrial applications have been slower to adopt portable handheld equipment designed to use small-sized
LCD displays.
NEC has leveraged its experience with mid to large-sized LCDs designed for medical and industrial applications and applied their
knowledge of the market requirements to the design of small-sized TFT LCDs. NEC offers a variety of small size amorphous silicon
(a-Si) TFT LCD products and just recently began mass production of a 3.5-inch low-temperature polysilicon (LTPS) TFT LCD product
with a variety of other LTPS products under development.
Amorphous Silicon (a-Si) Mobile Displays
LCD modules used for industrial-type mobile applications must meet very specific design
constraints and provide the high levels of brightness and contrast required to clearly display information and facilitate easy reading in multiple ambient light environments. Our
small-sized LCD modules address these market demands with high luminance levels and
contrast ratios, optimized designs and advanced features that contribute to significantly
reduced form factors in portable devices.
Low-temperature Polysilicon (LTPS) Mobile Displays
www.am.necel.com/display
www.nec-lcd.com/en
Recently NEC began mass production of LTPS displays at their factory in Akita, Japan.
With the addition of the LTPS line, NEC has expanded it’s core technologies to include
value-integrated TFT (VIT™) technology. By applying its VIT technology, which
integrates peripheral circuitry on the glass substrate of the LCD module using LTPS
technology, NEC LCD Technologies achieves a significant reduction in the peripheral
wiring of the glass substrate and in the number of connections with external circuits.
This results in pixel density that is four times higher than that of conventional 3.5-inch
quarter VGA (QVGA) modules, making the new module ideal for a wide variety of
portable devices, including personal digital assistants (PDAs) and navigation devices.
The VIT technology on the system-on-glass module also significantly improves pixel
aperture ratio and backlight efficiency while yielding an overall higher level of balance
among attributes.
