Acoustic touch position sensor using a low-loss transparent subs

Details Acoustic touch position sensor using a low-loss transparent subs Acoustic touch position sensor using a low-loss transparent subs

1995-01-24

1998-01-13

Wu, Xiao

Computer graphics processing and selective visual display system

Display peripheral interface input device

Touch panel

345173, 178 18, 310313R, G09G 500

Patent

active

057084610

ABSTRACT:
A touch position sensor or "touchscreen" utilizes acoustic waves within a sensor substrate to determine the position of touch. The substrate is made of a transparent material, such as borosilicate glass or a barium glass, which exhibits substantially less acoustic absorption than soda-lime glass.

REFERENCES:
patent: 4571519 (1986-02-01), Kawabata et al.
patent: 4752709 (1988-06-01), Fujishima et al.
patent: 5162618 (1992-11-01), Knowles
patent: 5243332 (1993-09-01), Jacobson
A Pressure-Responsive Tough-Input Device; T.J. Knowles; SID 92 Digest; pp. 920-923 (1992).
Published International Application No. PCT/JP93/01028; Publication No. WO94/02911 by K. Toda (Feb. 3, 1994).

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