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Two-Way LCD Sets From Sharp
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Friday, 15 July 2005
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Sharp
recently announced its latest development, a two-way viewing-angle LCD
that shows two different images on the same screen at the same time.
The image viewers see depends on whether they look at the screen from
the right or the left side. For home users this could mean the end of
the fight for the remote; a couple can watch a football game and a
romantic comedy on the same screen or a parent can watch the news while
a child watches cartoons. There are obstacles of course, images overlap
if viewers are not far enough to the left or right, and sounds can
drown each other out, making a pair of headphones necessary.
There are several image applications for this technology. Two-way
viewing allows you to use the same screen to watch television and work
on a computer or play videogames at once. Other uses identified by
Sharp include “advertising monitors” where people coming from different
directions see different advertisements, and “professional monitors”
that displays sales information to costumers and internal data to
employees.
The technology behind two-way viewing involves a parallax barrier
superimposed over a regular TFT LCD. This barrier separates the
backlight to the right and left, creating different images on the LCD
depending on the angle it’s viewed. The LCD can also be used as a
regular display, with the same view from any angle. Mass production is
slated to start this month and the LCDs are estimated to cost twice as
much as regular LCDs.
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