摘要:
Acoustic touch apparatus comprising a substrate having first and second surfaces capable of propagating surface acoustic waves, the second surface comprising a touch region and the first and second surfaces coupled via a rounded connecting surface; at least one acoustic wave transducer on the first surface; and at least one reflective array on the first surface. The transducer is capable of transmitting or receiving waves to and from the reflective array. The substrate and reflective array can acoustically couple waves between the first and second surfaces. The substrate has a border region on the first surface adapted to hide the transducer and reflective array and preclude distortion of waves propagating over a window in the border region. The border region may have a borderlayer except at the window and a corrective lens is used proximate the window, or the border region comprises discolored glass except at the window.
摘要:
A resistive touchscreen system comprises a substrate, a coversheet and a controller. The coversheet comprises a first conductive coating and the substrate comprises a second conductive coating. The substrate and coversheet are positioned proximate each other such that the first conductive coating faces the second conductive coating, and the substrate and coversheet are electrically disconnected with respect to each other in the absence of a touch. The controller is configured to (a) identify a multiple touch state when the substrate and coversheet are electrically connected with respect to each other at at least two touch locations, (b) to detect, over time, a plurality of apparent touch coordinates, (c) identify two possible X coordinates and two possible Y coordinates associated with at least one of the apparent touch coordinates, and (d) identify coordinate locations of two touches based on the apparent touch coordinates and the two possible X and Y coordinates.
摘要:
An electronic device includes a housing defining first and second user interface areas, a touch-sensitive display disposed in the first user interface area, and a conductive structure disposed along the housing in the second user interface area. The electronic device further includes a capacitive touch controller disposed within the housing and coupled to the conductive structure, the capacitive touch controller being configured to capture user interaction with the conductive structure, and a transceiver disposed within the housing and coupled to the conductive structure, the transceiver being configured for radio frequency (RF) communications. The conductive structure is configured for operation as an antenna to support the RF communications.
摘要:
The present invention relates to a method for reducing noise in a signal sensing a bending wave propagating in an object comprising the steps of: receiving a sensed signal representative of a plurality of locations of the object, and fitting a function satisfying bending wave propagation properties to the sensed signals, thereby reducing noise contributions to the sensed signals not satisfying the bending wave propagation properties. By doing so, noise contributions not satisfying the wave propagation properties can be suppressed from the sensed signal, thereby improving the signal-to-noise ratio.
摘要:
A cover sheet assembly is provided for a touchscreen system. The cover sheet assembly includes an insulating layer having a surface configured to be disposed over an electrically conductive area of a substrate of the touchscreen system, and an electrically conductive material disposed on at least a portion of the surface of the insulating layer. The electrically conductive material includes a plurality of carbon nanoparticles and a plurality of metal nanoparticles.
摘要:
A touch panel includes a surface acoustic wave propagating substrate having top and bottom surfaces and a multi-layer coversheet that is positioned over the substrate. The coversheet includes a load-spreading layer, a compliant layer and an anti-sticking layer. The load-spreading layer has top and bottom surfaces, and the top surface receives touch input from an object. The compliant layer has top and bottom surfaces and the top surface of the compliant layer is coupled to the bottom surface of the load-spreading layer. The anti-sticking layer has top and bottom surfaces and the top surface of the anti-sticking layer is coupled to the bottom surface of the compliant layer. The bottom surface of the anti-sticking layer is positioned proximate to the top surface of the substrate.
摘要:
A touch location on a capacitive touchscreen system is identified by receiving signals in response to a touch from electronic channels connected to one electrode or to a group of semi-adjacent electrodes provided on a substrate. Adjacent ones of the electrodes have substantially triangular shapes that alternate between a first and second orientation to form an interleaved arrangement such that the touch generates a signal cluster comprising the signals generated from a series of adjacent electronic channels. Weights with at least two different numerical values are applied to the signals from the series of adjacent electronic channels. The at least two different numerical values are based on levels of the signals. A location of the touch on the substrate is determined based on the weighted signals.
摘要:
A projected capacitive touch screen is provided that comprises a substrate and electrodes. The substrate defines an active touch zone surrounded by edges. The active touch zone includes a central active zone and an acceleration zone that is located proximate to, and extends along, at least one of the edges. The electrodes are provided on the substrate and are organized into first and second sets of electrodes that are contained within a common plane on the substrate. The first set of electrodes is interlaced with the second set of electrodes in a non-overlapping pattern on the substrate. At least a subset of the electrodes each has an apex and a base and a non-uniform triangular shape that extends along a longitudinal axis between the apex and the base. The subset of the electrodes is located such that at least a portion of the non-uniform triangular shape is located within the acceleration zone. The non-uniform triangular shape may be formed in part by varying an electrode width more rapidly near a perimeter of the active touch zone than the variation of the electrode width near a center of the active touch zone. The non-uniform triangular shape and non-overlapping pattern provide edge acceleration to compensate for signal loss when a portion of a finger contact area moves beyond the edge outside of the active touch zone. The non-uniform triangular shape may include a first pitch proximate to the base and a second pitch proximate to the apex. The pitch represents a rate of change in a width of the electrode per unit of distance along the longitudinal axis of the electrode.
摘要:
A projected capacitive touchscreen system has triangular-shaped electrodes coupled to a substrate. Adjacent ones of the electrodes alternate between first and second orientations to form an interleaved arrangement. The electrodes having the first orientation are electrically connected into greater than two groups that each have at least two semi-adjacent electrodes and the electrodes having the second orientation are electrically connected into at least one group that has at least two semi-adjacent electrodes. A controller detects signal levels associated with at least one touch on the substrate from the greater than two groups and the at least one group. The signal levels are used to determine both X and Y coordinate positions of the at least one touch.
摘要:
A touch sensor comprises a substrate capable of propagating acoustic waves. The substrate includes a first surface having a touch sensitive region and a first sidewall intersecting the first surface at a first edge. A transmitter is provided on the first sidewall of the substrate. The transmitter generates acoustic waves that propagate directly from the first sidewall through at least a portion of the touch sensitive region.