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The company LCD screens include technology to absorb natural light sources to brighten screens
by robinner ner dfOne Laptop Per Child spin-off Pixel Qi on
Thursday said it will soon start shipping low-power screens that could increase
laptop battery life by up to 50 percent sony vgp-bps8
battery, sony
vgp-bpl8 battery.
The company?s LCD (liquid crystal display)
screens include technology to absorb natural light sources to brighten screens,
said Mary Lou Jepsen, founder and CEO of Pixel Qi. That helps save battery life
as it reduces the need for a backlight, which is used to light up conventional
laptop screens.
?Instead of
cranking up the backlight to fight sunlight or the light of the office overhead
fluorescent tubes, we realized we could use the brilliant ambient light in the
image itself, saving power,? said Jepsen.
A casual laptop user may see Inspiron E1405
battery life jump from three hours to four-and-a-half hours by switching to the
light-powered screens, Jepsen said. The new screens will provide full color
depth and refresh rates that are comparable to conventional laptop screens.
The screens pull as much ambient light from
sources as possible, but the technology may not work effectively for users
watching DVD movies in dark rooms, Jepsen said.
?The
conventional LCD screens in computers are just miniature LCD-TVs. That?s
perfect, if all you want to do is watch movies all day, sitting in a darkened
room, with the device plugged in,? Jepsen said, in an e-mail interview.
Low power consumption of the screen dell studio
1535 battery, dell studio
1737 battery, one of the more power-hungry components on a laptop, could
lead to cheaper and lighter laptops, Jepsen said.
?Instead of
putting six XPS M140 battery cells into this model, I?ll try fewer or use
less-powerful cells, making the machine lighter and cheaper, and the battery
life exactly the same,? Jepsen said.
The small bump in battery life isn?t close
to Jepsen?s previous plans of laptop battery life between 20 and 40 hours.
However, Jepsen said Pixel Qi is working to blur the line between the screen
and motherboard, which could boost battery life more.
?We?ll get to
larger power savings later so the screen can enable much longer Latitude D820
battery life, but for that we need the manufacturers to make changes in the
motherboard, which will come in 2010-11,? Jepsen said asus a32-f3 battery, asus a33-f3
battery.
The screens will ship for sampling in a few
months and be in laptops by the middle of the year, Jepsen said. Initially, the
company will ship 10-inch screens. She didn?t name PC makers that would
eventually use those screens in laptops.
A variant of Pixel Qi?s low-power screen
technology was first implemented in OLPC?s XO laptops. That effort was led by
Jepsen, who formerly was OLPC?s chief technology officer and contributed to a
patent in low-power screen design.
She stirred up a controversy when she left nonprofit OLPC in 2007 to start the for-profit Pixel Qi, with the goal to create a US$75 laptop using technologies she invented at OLPC. The company is now focusing on dell studio xps 1340 battery, dell studio xps 1640 battery development of low-power screens.
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About robinner ner 
df
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