Electronic device with noise-cancelling force sensor

    公开(公告)号:AU2012352798B2

    公开(公告)日:2015-12-10

    申请号:AU2012352798

    申请日:2012-11-21

    Applicant: APPLE INC

    Abstract: An electronic device may have a housing in which components such as a display are mounted. A strain gauge may be mounted on a layer of the display such as a cover layer or may be mounted on a portion of the housing or other support structure. The layer of material on which the strain gauge is mounted may be configured to flex in response to pressure applied by a finger of a user. The strain gauge may serve as a button for the electronic device or may form part of other input circuitry. A differential amplifier and analog-to-digital converter circuit may be used to gather and process strain gauge signals. The strain gauge may be formed form variable resistor structures that make up part of a bridge circuit that is coupled to the differential amplifier. The bridge circuit may be configured to reduce the impact of capacitively coupled noise.

    Touch screen liquid crystal display

    公开(公告)号:AU2015203874A1

    公开(公告)日:2015-07-30

    申请号:AU2015203874

    申请日:2015-07-09

    Applicant: APPLE INC

    Abstract: TOUCH SCREEN LIQUID CRYSTAL DISPLAY Disclosed herein are liquid-crystal display (LCD) touch screens that integrate the touch sensing elements with the display circuitry. The integration may take a variety of forms. Touch sensing elements can be completely implemented within the LCD stackup but outside the not between the color filter plate and the array plate. Alternatively, some touch sensing elements can be between the color filter and array plates with other touch sensing elements not between the plates. In another alternative, all touch sensing elements can be between the color filter and array plates. The latter alternative can include both conventional and in-plane switching (IPS) LCDs. In some forms, one or more display structures can also have a touch sensing function. Techniques for manufacturing and operating such displays, as well as various devices embodying such displays are also disclosed.

    Touch screen liquid crystal display

    公开(公告)号:AU2013204507B2

    公开(公告)日:2015-06-04

    申请号:AU2013204507

    申请日:2013-04-12

    Applicant: APPLE INC

    Abstract: Disclosed herein are liquid-crystal display (LCD) touch screens that integrate the touch sensing elements with the display circuitry. The integration may take a variety of forms. Touch sensing elements can be completely implemented within the LCD stackup but outside the not between the color filter plate and the array plate. Alternatively, some touch sensing elements can be between the color filter and array plates with other touch sensing elements not between the plates. In another alternative, all touch sensing elements can be between the color filter and array plates. The latter alternative can include both conventional and in-plane-switching (IPS) LCDs. In some forms, one or more display structures can also have a touch sensing function. Techniques for manufacturing and operating such displays, as well as various devices embodying such displays are also disclosed. WO 2007/146783 PCT/US2007/070729 105a 100 104-,- -- - 101 --------- 102 105b ( Sensing Circuit V 103 S Processor ___ __ ___ __107 Memory Computer Circuit

    Capacitive sensing array modulation

    公开(公告)号:AU2014100526B4

    公开(公告)日:2014-12-11

    申请号:AU2014100526

    申请日:2014-05-20

    Applicant: APPLE INC

    Abstract: A capacitive fingerprint sensor that may be formed of an array of sensing elements. Each capacitive sensing element of the array may register a voltage that varies with the capacitance of a capacitive coupling. A finger may capacitively couple to the individual capacitive sensing elements of the sensor, such that the sensor may sense a capacitance between each capacitive sensing element and the flesh of the fingerprint. The capacitance signal may be detected by sensing the change in voltage on the capacitive sensing element as the relative voltage between the finger and the sensing chip is changed. Alternately, the capacitance signal may be detected by sensing the change in charge received by the capacitive sensing elements as the relative voltage between the finger and the sensing chip is changed.

    Capacitance touch near field-far field switching

    公开(公告)号:AU2013256581A1

    公开(公告)日:2014-10-30

    申请号:AU2013256581

    申请日:2013-04-29

    Applicant: APPLE INC

    Abstract: A touch sensor panel configured to switch between a mutual capacitance near field sensing architecture and a self-capacitance far field sensing architecture. The touch sensor panel includes circuitry that can switch the configuration of touch electrodes to act as either drive lines in a mutual capacitance configuration or as sense electrodes in a self- capacitance configuration. The touch sensor panel also includes circuitry that can switch the configuration of touch electrodes to act as either sense lines in a mutual capacitance configuration or a sense electrode in a self-capacitance configuration.

    CAPACITIVE SENSING ARRAY MODULATION.

    公开(公告)号:NL2010604C2

    公开(公告)日:2014-03-12

    申请号:NL2010604

    申请日:2013-04-09

    Applicant: APPLE INC

    Abstract: A capacitive fingerprint sensor that may be formed of an array of sensing elements. Each capacitive sensing element of the array may register a voltage that varies with the capacitance of a capacitive coupling. A finger may capacitively couple to the individual capacitive sensing elements of the sensor, such that the sensor may sense a capacitance between each capacitive sensing element and the flesh of the fingerprint. The capacitance signal may be detected by sensing the change in voltage on the capacitive sensing element as the relative voltage between the finger and the sensing chip is changed. Alternately, the capacitance signal may be detected by sensing the change in charge received by the capacitive sensing elements as the relative voltage between the finger and the sensing chip is changed.

    Touch screen liquid crystal display

    公开(公告)号:AU2011201285B2

    公开(公告)日:2013-06-20

    申请号:AU2011201285

    申请日:2011-03-22

    Applicant: APPLE INC

    Abstract: C:\NRPortblDCC\MAG\3541706_1 DOC - 2113/I I A touch screen display comprising: a liquid crystal display having a plurality of pixel electrodes and a counter 5 electrode; the counter electrode segmented into a plurality of touch drive electrodes, the counter electrode operating as a Vcom electrode during a display function and operating as the plurality of touch drive electrodes during a touch function; a plurality of touch sense electrodes spaced apart from the plurality of touch 10 drive electrodes to form capacitive coupling nodes therebetween; and at least one capacitance touch sensing circuit operatively coupled to the plurality of touch sense electrodes during the touch function for measuring a change in capacitance at the capacitive coupling nodes. 105a 100 104 - - 101 - 102 105b Sensing Circuit 103 -- 106 --- Processor Memory Computer Circuit

    Capacitive sensing array modulation

    公开(公告)号:AU2013100518A4

    公开(公告)日:2013-05-16

    申请号:AU2013100518

    申请日:2013-04-08

    Applicant: APPLE INC

    Abstract: A capacitive fingerprint sensor that may be formed of an array of sensing elements. Each capacitive sensing element of the array may register a voltage that varies with the capacitance of a capacitive coupling. A finger may capacitively couple to the individual capacitive sensing elements of the sensor, such that the sensor may sense a capacitance between each capacitive sensing element and the flesh of the fingerprint. The capacitance signal may be detected by sensing the change in voltage on the capacitive sensing element as the relative voltage between the finger and the sensing chip is changed. Alternately, the capacitance signal may be detected by sensing the change in charge received by the capacitive sensing elements as the relative voltage between the finger and the sensing chip is changed.

    Touch screen liquid crystal display
    100.
    发明专利

    公开(公告)号:AU2013204507A1

    公开(公告)日:2013-05-09

    申请号:AU2013204507

    申请日:2013-04-12

    Applicant: APPLE INC

    Abstract: Disclosed herein are liquid-crystal display (LCD) touch screens that integrate the touch sensing elements with the display circuitry. The integration may take a variety of forms. Touch sensing elements can be completely implemented within the LCD stackup but outside the not between the color filter plate and the array plate. Alternatively, some touch sensing elements can be between the color filter and array plates with other touch sensing elements not between the plates. In another alternative, all touch sensing elements can be between the color filter and array plates. The latter alternative can include both conventional and in-plane-switching (IPS) LCDs. In some forms, one or more display structures can also have a touch sensing function. Techniques for manufacturing and operating such displays, as well as various devices embodying such displays are also disclosed. WO 2007/146783 PCT/US2007/070729 105a 100 104-,- -- - 101 --------- 102 105b ( Sensing Circuit V 103 S Processor ___ __ ___ __107 Memory Computer Circuit

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