Display Standard - Veritas et Visus

Veritas et Visus Display Standard February 2009
Dell previews G-Series LED monitors that deliver energy efficiency
Dell announced its G-Series of LED wide-screen flat panel monitors with the introduction of the G2210 22-inch
and G2410 24-inch models. G-Series high-performance EPEAT Gold and ENERGY STAR-compliant monitors are
distinguished by a design approach that combines energy efficiency, LED technology, recycled materials and other
environmentally preferable components. Availability of the G2210 and G2410 monitors through Dell.com is
planned for late February, with prices starting at $279 and $359 respectively. http://www.dell.com
Greenpeace releases green electronics report
The greenest consumer electronic products on the market today have a smaller environmental footprint than those
sold a year ago but the industry as a whole still has plenty of room for improvement, according to a new survey
released by Greenpeace. “Green Electronics: the search continues” assesses the progress made over the past year by
consumer electronics companies on their public commitments to green their products. Fifteen major electronics
brands submitted 50 of their most environmentally friendly new products – mobile and smart phones, televisions,
computer monitors, notebook and desktop computers, and game consoles. Greenpeace assessed and scored each of
these products against a set of environmental criteria.
Greenpeace found that fewer electronic products on the market contain harmful PVC plastic and fewer hazardous
chemicals are being used in products. LED displays, which save energy and avoid the use of mercury in backlights,
are more commonplace. Manufacturers are using larger quantities of post-consumer recycled plastic in TVs and
monitors and producers have established more comprehensive voluntary take-back and recycling programs. Most
companies have also adapted quickly to the new requirements of Energy Star.
The Lenovo L2440x wide computer monitor scored highest with 6.9 points (on a 10-point scale) and is far ahead of
the competition in the monitor category. Other product category leaders include the Sharp LC-52GX5 television
(5.92), the Samsung F268 mobile phone (5.45), the Nokia 6210 Smart phone (5.2) the HP Elitebook 2530P laptop
(5.48) and the Lenovo ThinkCentre M58 desktop (5.88). The Greenpeace report is available at
http://www.greenpeace.org. Companies that chose to participate in the survey were: Acer, Dell, Fujitsu Siemens,
Hewlett Packard, Lenovo, LG Electronics, Motorola, Nokia, Panasonic, RIM/Blackberry, Sharp, Samsung, Sony,
Sony Ericsson and Toshiba. The companies that refused to take part in the survey were: Apple, Asus, Microsoft,
Nintendo, Palm, and Philips. Only Sony submitted game consoles for review.
Samsung develops LED that eliminates “droop”
A new breakthrough by researchers with Rensselaer Polytechnic Institute’s National Science Foundation-funded
Smart Lighting Engineering Research Center and Samsung Electro-Mechanics may bring LED lighting closer to
affordability and help the researchers creep closer to
The figure
highlights “LED
droop”, which
decreases LED
lighting
efficiency and
brightness. The
Rensselaer
Polytechnic
Institute and
Samsung have
come up with a
new LED.
82
a DOE-funded $20M prize. The new type of LED is
said to be “polarization matched” and gives 18%
increase in light output and a 22% increase in wallplug
efficiency. The droop phenomenon involves
LEDs being most efficient when operating on low
current densities, and seeing their efficiency greatly
droop at higher current densities. While all the
factors have yet to be determined, electron leakage is
one source of droop. The end result of droop is that
LEDs are forced to operate at lower current
densities, which feature much lower brightness and
efficiency in achieving light output. The new
research is reported in Applied Physics Letters.