Abstract

The real multitouch panel without ghost points is investigated using the structural patterns and an algorithm matrix of the two configurations. The pixels of patterns on the multitouch panel include virtual high and low resistances. The algorithm matrix with two configurations of equivalent circuit is derived using a voltage divider rule for array scanning. The fabrication process of structural patterns is carried out using microelectromechanical systems technology. The optical transmittance and absorbance of the multitouch panel in the UV, Vis, and IR regions are measured using a spectrophotometer. The multitouch panel, containing an array of 30 x 30, has a pixel size of 2 x 2 mm<sup>2</sup> and a pitch distance of 2 mm. The average values of high and low impedances are 53.23 and 9.3 k Ω, respectively. The maximum transmittance is about 74.2% at the wavelength of 692 nm. The multitouch panel based on high and low impedance patterns has good adjacent touch resolution for reality multitouch applications. In addition, the patterned design and the algorithm matrix provide unlimited multitouch points and avoid the ghost points.

© 2011 IEEE

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  2. D. X. Wang, Q. B. Liu, M. J. Zhang, "A multi-touch platform based on four corner cameras and methods for accurately locating contact points," Multimedia Tools and Applications 51, 963-982 (2011) 10.1007/s11042-009-0425-2.
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  4. B. Lee, I. Hong, Y. Uhm, S. Park, "The multi-touch system with high applicability using tri-axial coordinate infrared LEDs," IEEE Trans. Consumer Electronics 55, 2416-2424 (2009).
  5. S. M. Drucker, C. G. Wong, Selectable projector and imaging nodes of display table Patent 7 134 756 (2006).
  6. Y. Liu, J. P. Nikolovski, N. Mechbal, M. Hafez, M. Verge, "An acoustic multi-touch sensing method using amplitude disturbed ultrasonic wave diffraction patterns," Sens. Actuators A 162, 394-399 (2010).
  7. Y. Liu, J. P. Nikolovski, N. Mechbal, M. Hafez, M. Verge, "A multi-touch plate based on lamb wave absorption," Physics Procedia 1, 156-159 (2009).
  8. S. Hodges, S. Izadi, A. Butler, A. Rrustemi, B. Buxton, "ThinSight: Versatile multi-touch sensing for thin form-factor displays," Proc. Symp. User Interface Software Technol. (2007) pp. 259-268.
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  12. W. Y. Chang, T. H. Fang, S. H. Yeh, Y. C. Lin, "Flexible electronics sensors for tactile multi-ouching," Sensors 9, 1188-1203 (2009).
  13. M. Y. Lee, C. H. Lee, H. K. Lee, Y. H. Ha, "Improved shading model in spectral-based ray tracing method," Proc. IEEE Int. Conf. Image Process. (2003) pp. 449-452.
  14. A. Salimi, A. A. Yousefi, "FTIR Studies of b-phase crystal formation in stretched PVDF films," Polymer Testing 22, 699-704 (2003).

2011 (1)

D. X. Wang, Q. B. Liu, M. J. Zhang, "A multi-touch platform based on four corner cameras and methods for accurately locating contact points," Multimedia Tools and Applications 51, 963-982 (2011) 10.1007/s11042-009-0425-2.

2010 (2)

Y. Liu, J. P. Nikolovski, N. Mechbal, M. Hafez, M. Verge, "An acoustic multi-touch sensing method using amplitude disturbed ultrasonic wave diffraction patterns," Sens. Actuators A 162, 394-399 (2010).

G. L. Barrett, R. Omote, "Projected capacitive touch screens," Inf. Disp. Mag. 26, (2010).

2009 (5)

W. Y. Chang, T. H. Fang, H. J. Lin, Y. T. Shen, Y. C. Lin, "A large area flexible array sensors using screen printing technology," J. Disp. Technol. 5, 178-183 (2009).

W. Y. Chang, T. H. Fang, S. H. Yeh, Y. C. Lin, "Flexible electronics sensors for tactile multi-ouching," Sensors 9, 1188-1203 (2009).

Y. Liu, J. P. Nikolovski, N. Mechbal, M. Hafez, M. Verge, "A multi-touch plate based on lamb wave absorption," Physics Procedia 1, 156-159 (2009).

I. Rosenberg, K. Perliny, "The unmouse pad—An interpolating multi-touch force-sensing input pad," ACM Trans. Graphics 28, 65:1-65:9 (2009).

B. Lee, I. Hong, Y. Uhm, S. Park, "The multi-touch system with high applicability using tri-axial coordinate infrared LEDs," IEEE Trans. Consumer Electronics 55, 2416-2424 (2009).

2007 (1)

A. Agarwal, S. Izadi, M. Chandraker, A. Blake, "High precision multi-touch sensing on surfaces using overhead cameras," IEEE Comput. Soc. 1, 197-200 (2007).

2003 (1)

A. Salimi, A. A. Yousefi, "FTIR Studies of b-phase crystal formation in stretched PVDF films," Polymer Testing 22, 699-704 (2003).

ACM Trans. Graphics (1)

I. Rosenberg, K. Perliny, "The unmouse pad—An interpolating multi-touch force-sensing input pad," ACM Trans. Graphics 28, 65:1-65:9 (2009).

IEEE Comput. Soc. (1)

A. Agarwal, S. Izadi, M. Chandraker, A. Blake, "High precision multi-touch sensing on surfaces using overhead cameras," IEEE Comput. Soc. 1, 197-200 (2007).

IEEE Trans. Consumer Electronics (1)

B. Lee, I. Hong, Y. Uhm, S. Park, "The multi-touch system with high applicability using tri-axial coordinate infrared LEDs," IEEE Trans. Consumer Electronics 55, 2416-2424 (2009).

Inf. Disp. Mag. (1)

G. L. Barrett, R. Omote, "Projected capacitive touch screens," Inf. Disp. Mag. 26, (2010).

J. Disp. Technol. (1)

W. Y. Chang, T. H. Fang, H. J. Lin, Y. T. Shen, Y. C. Lin, "A large area flexible array sensors using screen printing technology," J. Disp. Technol. 5, 178-183 (2009).

Multimedia Tools and Applications (1)

D. X. Wang, Q. B. Liu, M. J. Zhang, "A multi-touch platform based on four corner cameras and methods for accurately locating contact points," Multimedia Tools and Applications 51, 963-982 (2011) 10.1007/s11042-009-0425-2.

Physics Procedia (1)

Y. Liu, J. P. Nikolovski, N. Mechbal, M. Hafez, M. Verge, "A multi-touch plate based on lamb wave absorption," Physics Procedia 1, 156-159 (2009).

Polymer Testing (1)

A. Salimi, A. A. Yousefi, "FTIR Studies of b-phase crystal formation in stretched PVDF films," Polymer Testing 22, 699-704 (2003).

Sens. Actuators A (1)

Y. Liu, J. P. Nikolovski, N. Mechbal, M. Hafez, M. Verge, "An acoustic multi-touch sensing method using amplitude disturbed ultrasonic wave diffraction patterns," Sens. Actuators A 162, 394-399 (2010).

Sensors (1)

W. Y. Chang, T. H. Fang, S. H. Yeh, Y. C. Lin, "Flexible electronics sensors for tactile multi-ouching," Sensors 9, 1188-1203 (2009).

Other (4)

M. Y. Lee, C. H. Lee, H. K. Lee, Y. H. Ha, "Improved shading model in spectral-based ray tracing method," Proc. IEEE Int. Conf. Image Process. (2003) pp. 449-452.

S. P. Jobs, S. Forstall, G. Christie, S. O. Lemay, S. Herz, M. van Os, B. Ording, G. Novick, W. C. Westerman, Touch screen device, method, and graphical user interface for determining commands by applying heuristics U.S. Patent 7 479 949 (2009).

S. M. Drucker, C. G. Wong, Selectable projector and imaging nodes of display table Patent 7 134 756 (2006).

S. Hodges, S. Izadi, A. Butler, A. Rrustemi, B. Buxton, "ThinSight: Versatile multi-touch sensing for thin form-factor displays," Proc. Symp. User Interface Software Technol. (2007) pp. 259-268.

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