公开(公告)号：US11334199B2

公开(公告)日：2022-05-17

申请号：US17155643

申请日：2021-01-22

Applicant: Synaptics Incorporated

Inventor： Tetsuo Tanemura ,  Petr Shepelev

IPC: G06F3/044 ,  G06F3/0488 ,  G06F3/0354

Abstract: A capacitive sensing device has a first plurality of sensor electrodes, and a second plurality of sensor electrodes overlapping the first plurality of sensor electrodes. A first sensor electrode of the second plurality of electrodes overlaps a first subset of the first plurality of electrodes and comprises apertures disposed according to first codes. The first codes comprise first and second coefficients and along one of the first plurality of sensor electrodes. Each aperture may correspond to one of the first coefficients. The capacitive sensing device further comprises a processing system coupled to the first and second plurality of sensor electrodes. The processing system may be configured to receive resulting signals with the second plurality of sensor electrodes to determine positional information for an input object within a sensing region of the capacitive sensing device.

公开(公告)号：US10942608B2

公开(公告)日：2021-03-09

申请号：US15961570

申请日：2018-04-24

Applicant: SYNAPTICS INCORPORATED

Inventor： Tetsuo Tanemura ,  Petr Shepelev

IPC: G06F3/044 ,  G06F3/0488 ,  G06F3/0354

Abstract: A capacitive sensing device has a first plurality of sensor electrodes, and a second plurality of sensor electrodes overlapping the first plurality of sensor electrodes. A first sensor electrode of the second plurality of electrodes overlaps a first subset of the first plurality of electrodes and comprises apertures disposed according to first codes. The first codes comprise first and second coefficients and along one of the first plurality of sensor electrodes. Each aperture may correspond to one of the first coefficients. The capacitive sensing device further comprises a processing system coupled to the first and second plurality of sensor electrodes. The processing system may be configured to receive resulting signals with the second plurality of sensor electrodes to determine positional information for an input object within a sensing region of the capacitive sensing device.

公开(公告)号：US20190278396A1

公开(公告)日：2019-09-12

申请号：US15917457

申请日：2018-03-09

Applicant: Synaptics Incorporated

Inventor： Petr Shepelev

IPC: G06F3/044

Abstract: An input device is disclosed. The input device includes: multiple sensor electrodes; and a processing system configured to: modulate a first sensor electrode of the multiple sensor electrodes with a guard signal; and mitigate electromagnetic emissions resulting from modulating the first sensor electrode with the guard signal by modulating a circuit element with an inverted version of the guard signal.

公开(公告)号：US20190087029A1

公开(公告)日：2019-03-21

申请号：US15707213

申请日：2017-09-18

Applicant: Synaptics Incorporated

Inventor： Petr Shepelev ,  Tetsuo Tanemura ,  Nobukazu Tanaka ,  Takayuki Noto

IPC: G06F3/044 ,  G06F1/16 ,  G06F3/041 ,  G09G3/20 ,  G02F1/1333 ,  G09G3/3208 ,  G09G3/36

Abstract: An input device may include a matrix electrode array that includes various transmitter electrodes and various receiver electrodes. The transmitter electrodes may be disposed in a first direction. The receiver electrodes may be disposed in a second direction that is substantially parallel with the first direction. The input device may further include a first set of routing traces coupled to the transmitter electrodes and disposed underneath the transmitter electrodes in the first direction. The input device may further include a second set of routing traces coupled to the receiver electrodes and disposed underneath the receiver electrodes in the second direction.

公开(公告)号：US10078406B2

公开(公告)日：2018-09-18

申请号：US15087583

申请日：2016-03-31

Applicant: Synaptics Incorporated

Inventor： Tetsuo Tanemura ,  Petr Shepelev

IPC: G06F3/044 ,  G06F3/041

CPC classification number: G06F3/044 ,  G06F3/0416 ,  G06F3/0418 ,  G06F2203/04108

Abstract: A method for capacitive sensing includes acquiring a mutual capacitive measurement including effects of sensing signals of a sensing region, and acquiring an absolute capacitive measurement including effects of the sensing signals. The method further includes performing a comparison of the mutual capacitive measurement and the absolute capacitive measurement, and detecting a presence of an input object proximate to a side surface of an input device based on the comparison. The side surface is at least substantially orthogonal to the sensing region on the input device. The method further includes reporting the presence of the input object.

公开(公告)号：US10025412B2

公开(公告)日：2018-07-17

申请号：US14187220

申请日：2014-02-21

Applicant: Synaptics Incorporated

Inventor： Petr Shepelev ,  David S. Sabo ,  Erol Eryilmaz

IPC: G06F3/041 ,  G06F3/044

Abstract: Embodiments described herein include a method and apparatus for capacitive sensing in input devices integrated with a display device. In one embodiment, a processing system for a display device comprising an integrated capacitive sensing device is provided that includes a display driver module, a transmitter module, and a receiver module. The display driver and transmitter modules are configured to operate in a display update mode and a sleep mode. The receiver module is configured to, while operating in a doze mode, communicate with and trigger the transmitter module to enter the active sensing mode while the display driver module remains in the sleep mode when presence of an object is detected based on the resulting signals.

公开(公告)号：US09946423B2

公开(公告)日：2018-04-17

申请号：US15401880

申请日：2017-01-09

Applicant: SYNAPTICS INCORPORATED

Inventor： Petr Shepelev ,  Adam Schwartz

IPC: G06F3/044 ,  G06F3/041 ,  G09G5/18

CPC classification number: G06F3/044 ,  G06F3/0412 ,  G06F3/0416 ,  G09G5/18

Abstract: Embodiments of the invention generally provide an input device with display screens that periodically update (refresh) the screen by selectively driving common electrodes corresponding to pixels in a display line. In general, the input devices drive each electrode until each display line (and each pixel) of a display frame is updated. In addition to updating the display, the input device may perform capacitive sensing using the display screen as a proximity sensing area. To do this, the input device may interleave periods of capacitive sensing between periods of updating the display based on a display frame. For example, the input device may update the first half of display lines of the display screen, pause display updating, perform capacitive sensing, and finish updating the rest of the display lines. Further still, the input device may use common electrodes for both updating the display and performing capacitive sensing.

公开(公告)号：US09946404B1

公开(公告)日：2018-04-17

申请号：US15476040

申请日：2017-03-31

Applicant: SYNAPTICS INCORPORATED

Inventor： Damien Berget ,  Petr Shepelev

IPC: G06F3/044 ,  G06F3/041 ,  H01L27/32

CPC classification number: G06F3/0418 ,  G06F3/0412 ,  G06F3/044 ,  H01L27/323

Abstract: Embodiments herein provide input devices that include an LED display panel on which a discreet capacitive sensor is disposed to form a capacitive sensing region. The capacitive sensor includes a plurality of sensor electrodes that are used to generate capacitive sensing signals indicating user interaction with the input device. In one embodiment, the sensor electrodes are disposed on a cathode layer in the LED display panel such that the sensor electrodes are capacitively coupled to the LED display panel. Currents in the cathode layer can cause interference or noise when performing capacitive sensing. The input devices include an analog front end channel for measuring interference resulting from the cathode layer at the same time receivers measure capacitive sensing signals using the sensor electrodes. The input device may process the capacitive sensing signals differently depending on the measured interference.

公开(公告)号：US09798429B2

公开(公告)日：2017-10-24

申请号：US14632226

申请日：2015-02-26

Applicant: Synaptics Incorporated

Inventor： Adam Schwartz ,  Joseph Kurth Reynolds ,  Bob Lee Mackey ,  Petr Shepelev

IPC: G06F3/045 ,  G06F3/044

CPC classification number: G06F3/044 ,  G06F2203/04112

Abstract: This disclosure generally provides an input device that includes a multi-layered capacitive sensor which includes a first layer disposed over a second layer that contains a plurality of sensor electrodes coupled to respective traces. The first and second layers form a capacitive sensing stack where the first layer is between the second layer and a touch surface for interacting with the input object. The first and second layers may be disposed on either the same substrate or different substrates in the stack. In one embodiment, the first layer includes electrically floating electrodes and at least one guard electrode. These components may align with respective components in the second layer. For example, the electrically floating electrodes in the first layer may at least partially cover the sensor electrodes in the second layer.

公开(公告)号：US09606676B2

公开(公告)日：2017-03-28

申请号：US13753369

申请日：2013-01-29

Applicant: Synaptics Incorporated

Inventor： Petr Shepelev

IPC: G06F3/044

CPC classification number: G01R27/2605 ,  G06F3/0416 ,  G06F3/044

Abstract: An input device comprises a first and second pluralities of capacitive sensor electrodes. The first plurality of capacitive sensor electrodes is oriented along a first axis, disposed in a first layer, and configured to update a display screen of the input device. The second plurality of capacitive sensor electrodes is oriented along a second axis that differs from the first axis. A display region of the display screen has a first dimension along the first axis and a second dimension the second axis. At least one sensor electrode of the first plurality of capacitive sensor electrodes extends fully across the first dimension of the display region. Individual sensor electrodes of the second plurality of capacitive sensor electrodes do not extend fully across the second dimension of the display region.