Abstract: A semiconductor device for an input device comprises a die body comprising sensor circuitry, a plurality of pads and a sensor bus. The sensor circuitry is configured to operate a plurality of sensor electrodes disposed in a single layer for capacitive sensing. A first pad of the plurality of pads is configured to be coupled to a first sensor electrode of the plurality of sensor electrodes, a second pad of the plurality of pads is configured to be coupled to a second sensor electrode of the plurality of sensor electrodes, and a third pad of the plurality of pads is configured to be coupled to a third sensor electrode of the plurality of sensor electrodes. The sensor bus comprises a plurality of wires. A first wire of the plurality of wires is configured to couple the first pad and the second pad to a first transmitter of the sensor circuitry and a second wire of the plurality of wires is coupled to the third pad to a first receiver of the sensor circuitry.

Abstract: A semiconductor assembly for a display device comprises a display driver integrated circuit (DDIC) chip and an interposer coupled to the DDIC chip. The DDIC chip comprises a plurality of output pads and a plurality of input pads. Further, the DDIC chip is configured to drive a plurality of data lines of the display device to update an active region of the display device. The interposer comprises a plurality of output pads coupled to the plurality of output pads of the DDIC chip and is configured to be coupled to the plurality of data lines of the display device. The interposer further comprises a plurality of input pads coupled to the plurality of input pads of the DDIC chip pads. Further, a width of the interposer is at least as large as a distance between outermost data lines of the plurality of data lines.

Abstract: A system and method for capacitive sensing comprise acquiring first capacitive sensor data and second capacitive sensor data from a plurality of sensor electrodes, and determining positional information from one or more input objects based on the first capacitive sensor data and the second capacitive sensor data. The plurality of sensor electrodes are driven with transcapacitive sensing signals for capacitive sensing during one or more transcapacitive sensing blocks to acquire the first sensor data. Each of the transcapacitive sensing signals is based on a respective one of a plurality of codes. Further, the plurality of sensor electrodes are operated for absolute capacitive sensing during one or more absolute capacitive sensing blocks to acquire the second capacitive sensor data.

Abstract: A system and method for correcting distortions within a biometric image. The biometric image is generated from first sensor data acquired from a sensing device. The first sensor data may include distortions generated in response to a change in distance or tilt between elements of a corresponding electronic device. Further, second sensor data corresponding to a calibration image is acquired from the sensing device. A corrected biometric image is generated based at least in part on the biometric image and the sensor data.

Abstract: A method for optically imaging an object using a display device includes: illuminating, by the display device, an object at a sensing region corresponding to an optical sensor of the display device; conditioning, by the display device, light from the sensing region, wherein conditioning the light includes focusing and reflecting the light; receiving, by the display device, the conditioned light at photodetectors of the optical sensor; and generating, by a processing system associated with the display device, an image of the object based on the conditioned light received at the photodetectors of the optical sensor.

Abstract: Embodiments described herein include an input device and associated processing system for sensing force applied by input objects. The input device comprises a display device comprising a plurality of layers formed as a display stack, the display stack including a top surface. The input device further comprises one or more strain gauges disposed within the display stack and configured to detect force applied to the top surface, and a processing system configured to perform display updating using the display device and to perform force sensing using the one or more strain gauges.

Abstract: An input device comprises a plurality of sensor electrodes and a processing system coupled to the plurality of sensor electrodes. The processing system comprises a sensor driver. The sensor driver comprises clock synchronization circuitry, a blocking pulse generator, and a sensor module. The clock synchronization circuitry is configured to receive an external clock signal, and synchronize an internal clock signal with the external clock signal. The blocking pulse generator is configured to generate a first blocking pulse based on the internal clock signal. The sensor module comprises sensing circuitry and is configured to pause acquisition of a resulting signal from a sensor electrode based on the first blocking pulse.

Abstract: A fingerprint sensing device integrated within a display device. The display device comprises source lines, monitor lines, gate lines, select lines, and subpixels. A first subpixel comprises first subpixel circuitry coupled to a first source electrode, a first monitor line, and a first gate line, and a first photodiode circuitry coupled to a first select line. The display device further comprises measurement circuitry coupled to the first subpixel via the first monitor line. The measurement circuitry is configured to receive a first current signal from the first subpixel circuitry during a first period via the first monitor line, receive a second current signal from the first photodiode circuitry during a second period via the first monitor line, and determine fingerprint data from the second current signal.

Abstract: A method may include obtaining, using a first set of resulting signals from various proximity sensor electrodes, positional information regarding a location of an input object in a sensing region. The method may include obtaining, using a second set of resulting signals from various force sensor electrodes, force information regarding an input force that is applied to an input surface. The method may include loading, using a loading actuator and in response to the positional information or the force information, energy in a spring element coupled to a buckling element. The spring element may apply a compression force to the buckling element based on the energy in the spring element. The method may include generating, using a buckling actuator and in response to the positional information or the force information, a haptic event by applying a force to the buckling element to trigger the haptic event.

Abstract: This disclosure generally provides an input device that includes a reference voltage modulator that modulates reference voltage rails when performing capacitive sensing. In one embodiment, reference voltage rails are coupled to a DC power source which provides power to operate a panel that includes a display screen integrated with a touch sensing region. Before performing capacitive sensing, the input device may isolate the DC power source from the reference voltage rails and use the reference voltage rails to modulate the rails—e.g., VDD and VGND. The input device may include a receiver that simultaneously acquires resulting signals from a plurality of display and/or sensor electrodes when modulating the reference voltage rails. The resulting signals can then be processed to determine if an input object is interacting with the input device.

Abstract: Embodiments described herein include an input device and associated processing system for sensing force applied by input objects. The input device comprises a display device comprising a plurality of layers formed as a display stack, the display stack including a top surface. The input device further comprises one or more strain gauges disposed within the display stack and configured to detect force applied to the top surface, and a processing system configured to perform display updating using the display device and to perform force sensing using the one or more strain gauges.

Abstract: A processing system includes a sensor module configured to receive first and second signals from first and second sensor electrodes, respectively, and generate a combination signal. The processing system further includes a determination module configured to determine, using the first sensor electrode, an absolute capacitive coupling to an input object; determine, using the first and second sensor electrodes, a transcapacitive coupling; determine a ratio of the absolute to transcapacitive coupling; determine, using the combination signal, in absence of a predetermined low ground mass state, and when the ratio fails to exceed a predetermined threshold, first positional information regarding a location of the input object; and determine, when the ratio fails to exceed the predetermined threshold and in presence of the predetermined low ground mass state, second positional information regarding the location of the input object in the sensing region using an absolute capacitive scan.

Abstract: A display driver for driving a display panel includes a voltage data generator circuit calculating a voltage data value from an input grayscale value and a driver circuitry driving the display panel in response to the voltage data value. The voltage data generator circuit includes a basic control point data storage circuit storing therein basic control point data specifying a basic correspondence relationship between the input grayscale value and the voltage data value, a correction data memory storing correction data for each of the pixel circuits, a control point calculation circuit and a data correction circuit.

Abstract: A method may include obtaining, using a first set of resulting signals from various proximity sensor electrodes, positional information regarding a location of an input object in a sensing region. The method may include obtaining, using a second set of resulting signals from various force sensor electrodes, force information regarding an input force that is applied to an input surface. The method may include loading, using a loading actuator and in response to the positional information or the force information, energy in a spring element coupled to a buckling element. The spring element may apply a compression force to the buckling element based on the energy in the spring element. The method may include generating, using a buckling actuator and in response to the positional information or the force information, a haptic event by applying a force to the buckling element to trigger the haptic event.

Abstract: A system and method for mitigating interference within a sensing device. The sensing device may be part of an input device that also includes a display device. The display device may include a display panel having a plurality of display electrodes, and a display driver configured to drive the plurality of display electrodes. The sensing device may include a plurality of sensor electrodes disposed over the display panel, and a sensor driver communicatively coupled to the plurality of sensor electrodes and the display driver. The sensor driver may be configured to acquire sensor data from the plurality of sensor electrodes, receive a display signal from the display driver, and reduce interference within the sensor data at least partially based on the display signal.

Abstract: A system and method for updating a display of a display device. The display device may include a plurality of subpixels, and a display driver coupled to the plurality of subpixels. The display driver may be configured to compare a first data signal of a first statistically selected subpixel of the plurality of subpixels to a first statistically selected threshold, increase a value of a first counter corresponding to the first statistically selected subpixel in response to the first subpixel data signal exceeding the first statistically selected threshold, adjust the first subpixel data signal in response to the first counter value satisfying a second threshold, and drive the first statistically selected subpixel based at least in part on the adjusted first subpixel data signal.

Abstract: A fingerprint sensing device integrated within a display device. The display device comprises source lines, monitor lines, gate lines, select lines, and subpixels. A first subpixel comprises first subpixel circuitry coupled to a first source electrode, a first monitor line, and a first gate line, and a first photodiode circuitry coupled to a first select line. The display device further comprises measurement circuitry coupled to the first subpixel via the first monitor line. The measurement circuitry is configured to receive a first current signal from the first subpixel circuitry during a first period via the first monitor line, receive a second current signal from the first photodiode circuitry during a second period via the first monitor line, and determine fingerprint data from the second current signal.

Abstract: A fingerprint sensing device having an image sensing device and configured to detecting fingerprint data of an input object. The image sensing device includes a plurality of lenses, and a plurality of sensing elements. The plurality of sensing elements includes a first sensing element has a field of view associated with a first lens of the plurality of lenses and laterally offset from a center of the first lens, and a second sensing element has a field of view associated with a second lens of the plurality of lens and laterally offset from a center of the second lens. Further, a processing system may be coupled to the image sensing device and operate the image sensing device to acquire fingerprint image to authenticate a user.

Abstract: A system and method for input sensing comprises a display device having at least one piezoresistive sensing transistor. During a first period, a first resulting signal is received with a first data line by driving a first piezoresistive sensing transistor of a first subpixel of the display device with a first select signal. The first resulting signal corresponds to a change in resistance of the first piezoresistive sensing transistor. Further, at least one of force information and positional information associated with an input object may be determined at least partially based on the change in resistance.

Abstract: Embodiments described herein include a method for avoiding display noise in a capacitive touch sensing device that includes sensing a touch input in a sensing region of an input device at a first touch sensing frequency. The method also includes analyzing incoming display data for display data noise at the first touch sensing frequency and at a second touch sensing frequency. If the display data noise at the first touch sensing frequency is higher than a threshold, touch sensing frequency is adjusted to the second touch sensing frequency where the display data noise is lower than the threshold. If the display data noise at the first touch sensing frequency is lower than the threshold, sensing is continued at the first touch frequency.