DUAL-FUNCTION TRANSDUCER FOR A TOUCH PANEL
First Claim
Patent Images
1. A dual-function transducer for a force-sensitive multi-touch screen, comprising:
- a first substrate;
at least one electrode array formed on the first substrate, the at least one electrode array including first and second electrodes; and
circuitry operatively coupled to the first and second electrodes, the circuitry configured to measure first and second electrical properties of the electrode array, the first and second electrical properties corresponding to touch and strain, respectively.
1 Assignment
0 Petitions
Accused Products
Abstract
A dual-function transducer for a force-sensitive multi-touch screen, including a first substrate, at least one electrode array formed on the first substrate, the at least one electrode array including first and second electrodes, and circuitry operatively coupled to the first and second electrodes. The circuitry is configured to measure first and second electrical properties of the electrode array, the first and second electrical properties corresponding to touch and strain, respectively.
190 Citations
35 Claims
-
1. A dual-function transducer for a force-sensitive multi-touch screen, comprising:
-
a first substrate; at least one electrode array formed on the first substrate, the at least one electrode array including first and second electrodes; and circuitry operatively coupled to the first and second electrodes, the circuitry configured to measure first and second electrical properties of the electrode array, the first and second electrical properties corresponding to touch and strain, respectively. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30)
-
-
31. A method of measuring capacitance and strain for a plurality of cells of a touch panel, the touch panel including a plurality of electrode arrays, respective ones of the plurality of electrode arrays corresponding to respective ones of the plurality of cells, the plurality of electrode arrays formed on a substrate and including first and second electrodes, wherein each electrode array is patterned such that the first and second electrodes are responsive to changes in both capacitance and strain, the method comprising:
-
selectively coupling each electrode array to a capacitance measuring circuit; measuring a capacitance for multiple and simultaneous touch events on the touch panel; and correlating a change in capacitance for each cell to a location of an independent touch event. - View Dependent Claims (32, 33, 34, 35)
-
Specification