A touch sensor, and method of operating same, includes: a flexible substrate capable of being bent into curved or flat shapes; a plurality of pressure sensors provided on the substrate; and a sensor controller configured to determine a bent form of the substrate by using a first detection signal obtained from at least one of the plurality of pressure sensors and to compensate for an intensity of touch by generating a signal based upon the bent form of the substrate.

A touch sensitive input system for an electronic device includes a deflection sensor configured to generate a deflection signal based on deflection of a control or sensing surface, and a processor in signal communication with the deflection sensor. The processor is operable to generate a deflection or displacement map characterizing displacement of the surface based on the deflection signal, and a force map characterizing force on the surface based on a transformation of the displacement map. The transformation may be based on a generalized inverse of a compliance operator, where the compliance operator relates the displacement map to the force map. The compliance operator is not necessarily square, and does not necessarily have a traditional inverse.

An optically transparent force sensor element compares a force reading from a first strain-sensitive film element with a second strain-sensitive film element, having a compliant and thermally conductive intermediate layer positioned therebetween to compensate for temperature changes. While in the idle state, the optically transparent force sensor can be periodically calibrated to account for additional changes in temperature.

An electronic apparatus includes a touch sensor, a driving circuit, and a switching circuit. The driving circuit includes a first detector and a second detector. The first detector transmits/receives an electrical signal to detect a position of a touch. The second detector transmits/receives an electrical signal to detect an intensity of the touch. The switching circuit selectively connects the first detector or the second detector to the sensor.

A force sensing device comprises a sensing array comprising a first conductive layer having a plurality of conductive rows and a second conductive layer having a plurality of conductive columns. The plurality of conductive rows and plurality of conductive columns are arranged to define a plurality of intersections. The force sensing device also comprises an electro-active layer overlaying the first conductive layer and comprising a pressure sensitive element at each intersection. A force concentrating structure is positioned at each intersection on the second conductive layer.

Integrated touch displays with combined pressure and projected capacitance touch capabilities are provided. A sensing electrode layer and, optionally, a driving electrode layer, has a plurality of discrete pads deposited, patterned, printed or laminated on a cover lens or color filter substrate. Each of the discrete pads may be formed of an optically transparent conductor.

A system for delineating a location of a virtual button by haptic feedback includes a cover layer, a touch-input sub-system, a haptic transducer, and a haptic controller. The touch-input sub-system includes force-measuring and touch-sensing integrated circuits (FMTSICs), each coupled to the inner surface of the cover layer corresponding to one of the virtual buttons. The touch-input sub-system is configured to determine: (1) supplemental haptic feedback commands if “PMUT Triggered” Boolean data is True for at least one of the FMTSICs (Touched FMTSICs) and light-force conditions are satisfied for all of the Touched FMTSICs, and (2) primary touch inputs if “PMUT Triggered” Boolean data is True for at least one of the FMTSICs (Touched FMTSICs) and light-force conditions are not satisfied for at least one of the Touched FMTSICs. The haptic controller is configured to drive the haptic transducer to generate haptic feedback in accordance with the supplemental haptic feedback commands.

Sensor arrays are provided for sensing pressure and/or moisture over a two-dimensional sensing surface. The sensor arrays comprise ionically conductive materials. Individual sensor elements s in the sensor arrays may comprise piezoionic ionically conductive materials, piezoresistive ionically conductive materials and/or capacitive sensor elements having electrodes fabricated from ionically conductive materials. Two-dimensional pressure maps and/or moisture maps of the sensing surface may be obtained by implementing methods comprising scanning over individual sensor elements in the sensor arrays.

A touch sensor includes a base layer, a first electrode unit, second electrode units, and a first strain gauge. The first electrode unit includes first touch electrodes arranged on the base layer along a first direction and electrically connected to each other along the first direction. The second electrode units are spaced apart from one another along the first direction. Each of the second electrode units includes second touch electrodes arranged on the base layer along a second direction intersecting the first direction and electrically connected to each other along the second direction. Each of the second touch electrodes includes a first opening. The first strain gauge includes first resistance lines electrically connected to each other along the first direction. Each of the first resistance lines is disposed in a respective first opening disposed in a first row among the first openings.

A touch sensor and a display device, in which the touch sensor includes: a base layer including a first region which is a flat portion, and a second region which is a curved portion extending from the first region; touch electrodes arranged on the base layer and each including an opening; a strain gauge disposed in the first region; and a temperature compensation pattern disposed in the second region.