看到不少公司的便宜22寸触屏都是用的这家公司Quanta的东西，可惜市场上没有他的
OVERLAY的套件卖。
Quanta and 3M team up for more sensitive touchscreen solution
When it comes to selecting a touchscreen for a new device manufacturers
currently have two clear choices: resistive or capacitive. Resistive relies
on pressure being applied to the screen and usually works best with pen-
based input. Capacitive is the choice of smartphones and uses the body’s
electrostatic field measured through a change in capacitance to gauge touch
input.
While capacitive is seen as the better tech for most devices, it does block
the use of other input devices such as a pen. Quanta Computer and 3M have
teamed up to produce a new touchscreen technology that should allow both
finger and pen to work well due to a much higher sensitivity.
The new touchscreen technology, being shown off at Computex 2010, is called
Dispersive Signal Technology (DST), and relies on an extra layer of glass
being used in the display. That glass layer is covered in sensors that pick
up pressure, but the sensitivity of the new screen is high enough that
finger input should be on a par with capacitive touchscreen solutions, if
not higher.
Qaunta has said that the extra layer of glass will have little impact on the
thickness of the screen and that the cost of the new tech will be similar
to existing solutions.
Read more at DigiTimes
Matthew’s Opinion
From using both resistive and capacitive touchscreens capacitive is the
clear winner for finger input. That may be fine for smartphones and small
tablets, but what about if you have a multifunction large-screen device you
want to write notes on? Having the option of pen input would be nice in such
situations.
DST looks like it might offer the best of both worlds. Finger input as
responsive as that found on existing smartphones like the iPhone, but the
ability to pick up a pen and start writing too. The fact it costs the same
as existing tech also removes a barrier to its use in new devices.
Until we see DST in action we can’t say if it is a successor to capacitive
and resistive touchscreens, but you can be sure companies like Apple and
Google will look into using DST in future products if it lives up to the
hype.
