|
Web
Technical application:
4 wire analog Touch Panel
Click
here to download specification  PDF |
| |
| |
Acting theory：
The construction of general analog inductive
entering device is structured by analog film of top and bottom
layers (diagram一)that means it is formed by X layer, Y layer and
one piece of controlling circuit board, on the X layer analog
film, there is a pair of electrode connected by analog film spreading
alongside the direction of X axis, that is X+ and X- electrode
separated at the sides of X layer analog film, on the Y layer
analog film, there is a electrode connected by analog film spreading
alongside the direction of Y axis, that is Y+ and Y- electrode
separated at the sides of Y layer analog film, adding fixed voltage
at one side of electrode on the two layers of analog film, touching
any point at the appearance of two layers of analog film, measuring
through electrode at another side without electrification and
getting a voltage value from two pieces of analog film be touched,
then can get X and Y coordinate of touching point.
No limited to touching medium because it induces
by pressure, it can be operated no matter with hand、pencil，credit
card, stick...etc. that also can work even though wearing glove.
Application：
The main environment must be in no limited
to touching medium or wearing glove, for example: surgical table
monitor, automatic ordering system, PDA, electric dictionary,
cell phone, logistics system, stock system...etc.
<top>
5 wire analog Touch Panel
| Click
here to download specification PDF |
Acting theory:
Adding a even electric field at four endpoints,
RT, RB, LT, LB to make the ITO glass of the bottom spread a even
voltage, the top layer is signal-receiving device, when pen or
finger touch any point of appearance, the controller detects that
the electrode changes and then switches coordinate.
No limited to touching medium because it induces
by pressure, it can be operated no matter with hand, pencil, credit
card, stick...etc. that also can work even though wearing glove.
Application:
The main environment must be in no limited
to touching medium, bad environment or high touching frequency,
for example: POS system, industrial control, automatic ordering
system, traveling guide system...etc.
The difference in characteristic between 4 wire T/P and 5 wire T/P
|
|
4 wire T/P
|
5 wire T/P
|
|
Noise
|
Voltage switches between top and bottom layers
that is easy to cause interference.
|
The signal of X axis and Y axis are all at
the same layer that the interference is not easy to occur.
|
|
Cutting
|
The linear is defective once damaged
|
Still can work perfectly even though is cut
|
|
Lifetime of single point
|
Above one million
|
Over two million times
|
|
Life time
|
good
|
good
|
|
Stability
|
good
|
good
|
|
Patent
|
No limited to patent
|
Super Elite With multinational inventing patents
|
|
Technical level
|
Low
|
Low
|
<top>
The
different between 2
point
and
Mutil-point
fixed positions
(2003/3)
(a)
2
point
fixed positions
The highest linearity
error for Touch Panel is 1.5% that means whatever coordinates X or Y
the linear error is both lower than 1.5%. Excellent linearity Touch
Panel the linearity error could control above 1.0% and coordinates X
or Y the linearity error is almost 0%. It could be accurate to show
sign location if using 2 point fixed positions.
(b)
Mutil-point
fixed positions
During the Touch panel product process, due to the process
mistake or product isn’t stable to make
linearity error is over 1.5%, this needs
to use 16 or 25 fixed positions program to proofread and correct
the highest error with the unqualified product
by Data Base System or Mathematic Calculate to
compute. This way is obvious to show out the Touch panel linear is
bad and needs the software to revise and recover the unqualified
linear.
Automobile
Touch Panel
(2004/12)
With the popularity of car
built-in VCD/DVD and GPS, Touch Panel is applied to car more and
more common, generally the specification of
car-using touch panel in the market is between -40℃
to 85℃
,but is the temperature inside the car only 85℃
?According to actual testing data from car manufacturer, the hotspot
temperature on instrument board even reach 105
℃
high while park the car under the non-shade burning sun in summer
that is why the cassette tape and CD inside the car is roasted
deformed.
Therefore the highest temperature inside the car is not only 85
℃.
|
Car stereo and DVD can work normally while the
temperature inside the car goes down from 100
℃
high to room temperature.
But is your Touch-Video System is still normal?
Could it be said the car we bought has limitation
on use?
Is only suitable for the zone between
±
20°
above and
±40
°
below of southern and northern latitude of earth?
The accuracy of Super Elite’s car-using Touch
Panel can still reach 99% high
(The tolerance of linearity is under 1.0%) after 100 cycle of
Thermal shock -40
℃~110
℃.It
is a reliable product for you. |
 |
For Touch Panel,
the most important feature is touch accuracy,
the average linearity standard is 1.5% of,
but the touch tolerance of Super Elite’s car-using
product is still under 1.0% even though after Thermal shock -40
℃~110
℃ 100 cycle,
high temperature 100
℃@240hr,lower
temperature -40
℃@240hr.As the
structure of Super Elite’s car-using Touch Panel is Film/Glass that
is much safer than Glass/Glass,
when accident occur , people would not be hurt due to the break of
upper Glass,
therefore have the feature of anti-explosion and the touch sense of
Film/Glass is better than Glass/Glass as well.
With the
popularity of global computer information ,Touch Panel have become
inseparable equipment.
The operating temperature standard of
touch panel is mostly set between -20
℃~70
℃,Super Elite
have developed car use grade touch panel in accordance with the
persistence and specialty that the operating temperature can reach
as
high as the boiling point 100
℃ and as low as
-40
℃ subzero,
and the linearity tolerance is still under 1% after operating 240 hours
continuously.
<top>
linearity is not the all
(2006/11)
In general, touch panel is judged by linearity 1.5%.Is it the
excellent panel for 99% linearity ?
Of course not, according to actual testing data from ITO film & Glass with temperature
changed. ITO material resistance will be changed according to the time and temperature (Fig.1)(Fig.2).
The point of touch will be shift moving away from the right
position. linearity testing is not the all for the panel.
Super Elite's touch panel for automobile can be operate in the temperature range -40℃~100℃(Fig.3)(Fig.4), and no
shift. It is a real reliable product for automobile.
<top>
HOME
|
