lokesh chowdary

1. Presentated by :
N.LOKESH
119A1A0506

2. WHAT IS A TOUCH SCREEN ?
Touch screen
is an electronic
visual display
that locates the
coordinates of
users touch
within the touch
area.

3. THE
TELAUTOGRAPH
ELISHA GRAY
1911
THE THEREMIN
LEON THEREMIN
1928
Played music with
out physical contact
HISTORY

4. THE RAND TABLET
RAND corporation
1964
Enabled free hand drawings
THE DYNA BOOK
ALAN KAY
1968
Access to digital media for children
volumes of military maintenance

5. THE ACCUTOUCH
1971  first sensor was developed
Dr.SAM HURST (founder of ELOGRAPH)
Demonstrated on 33 televisions at 1982 world’s fair.
where the public saw the touch screen for the first tim

6. 1983  HP-150
1985  SENSOR FRAME
First touch screen computer

7. TOUCH
SCREE
N
types
RESISTIVE
CAPACITATI
VE INFRARED

8. RESISTIVE TOUCH
 Most widely used in mobile phones
Water and dust resistance
Touch with fingers, stylus, etc.,
Life span of 35 million touches

9. CAPACITATIVE TOUCH
 Most expensive than resistive
touch screens
Water, dust and scratch resistant
Touch only with fingers

11. INFRARED TOUCH

12. Z-FORCE
Z-Force is developed to work with a wide
range of touch enabled devices such as
smart phones, tablets, toys, home appliances,
e-readers, printer products and automotive
applications.
Z-Force is developed to provide outstanding
performance.
This is achieved through Neonode’s multi
sensing technology

13. WORKING PRINCIPLE
The frame is Integrated with printed
circuit board.
Contains IR-LED’s & Photo
transistors hidden behind the
bezel.
These are set on opposite sides of the
screen to create invisible IR-light

15. MULTI SENSING TECHNOLOGY
 It performs with the speed of light.

16. ADVANTAGES:-
 It is cheaper technology as compared to
the resistive and capacitative touch screens.
 Long service life
 It does not use the electrical properties of
the human body to track movement.
 Long battery life
 Touch con be activated by any thing
including finger, stylus, gloved hand

17. DISADVANTAGES:-
 A raised bezel is placed around
the screen.
 1ms response times are quite possible
with this new technology and there is little
to no lag.

18. CONCLUSION
 Neonode could be a solid stock for
technology growth investors. The firm’s
unique technology, solid business model,
near-term revenues and long-term
contracts make it worth a second look.