Patents Examined by Sanjiv D Patel
  • Patent number: 11513633
    Abstract: An input device comprising a set of electrodes configured to detect a user input of a user and a processing system is provided. The processing system comprises a signal level monitor configured to detect burst noise or impulse noise and one or more processors configured to: perform a scan step of a plurality of scan steps by driving one or more first transmitter electrodes of the plurality of transmitter electrodes with one or more sensing signals; obtain one or more first resulting signals corresponding to the one or more sensing signals used to drive the one or more first transmitter electrodes; detect, based on the one or more first resulting signals, the burst noise or the impulse noise corresponding to the scan step; and in response to detecting the burst noise or the impulse noise, restart the scan step.
    Type: Grant
    Filed: December 27, 2021
    Date of Patent: November 29, 2022
    Assignee: Synaptics Incorporated
    Inventors: Guozhong Shen, Chunbo Liu
  • Patent number: 11508287
    Abstract: A display panel including a plurality of pixels is provided. The display panel includes: a plurality of light emitting elements configured to constitute each pixel of the plurality of pixels; and a plurality of pixel circuits respectively corresponding to the plurality of light emitting elements and configured to drive the plurality of light emitting elements, wherein the plurality of pixel circuits includes a first pixel circuit for pulse width modulation (PWM)-driving a first light emitting element among the plurality of light emitting elements and a second pixel circuit for pulse amplitude modulation (PAM)-driving a second light emitting element among the plurality of light emitting elements.
    Type: Grant
    Filed: August 11, 2021
    Date of Patent: November 22, 2022
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jinho Kim, Sangmin Shin, Youngki Jung
  • Patent number: 11508314
    Abstract: A pixel and a display device including the pixel are disclosed. The pixel comprises a first transistor, a second transistor, a third transistor, a fourth transistor, a fifth transistor, a sixth transistor, a seventh transistor, an eighth transistor, a first capacitor, and a light emitting element. The eighth transistor includes a gate electrode configured to receive a second data voltage, a first electrode connected to a fourth node, and a second electrode configured to receive an initialization voltage. The eighth transistor adjusts a voltage level of the first capacitor based on a difference between the voltage level of the first capacitor and a level of the second data voltage.
    Type: Grant
    Filed: November 11, 2021
    Date of Patent: November 22, 2022
    Inventors: Sungyup Kim, Sunyoung Park, Tae-Ho Kim, Jonguk Bang, Min-Tak Lee, Joon Huh
  • Patent number: 11501720
    Abstract: A display panel comprises a reset module, a data-writing module, a driving transistor, a light-emitting control module, a first memory module and a first signal module. The reset module is configured to provide a reset signal to an anode of a light-emitting element through a light-emitting control module. The first signal module is configured to provide a data voltage signal to the data-writing module in a data-writing stage to write the data voltage signal to a gate electrode of the driving transistor and a first end of the first memory module through the data-writing module and provide a data current signal to the driving transistor in the data-writing stage to compensate a threshold voltage of the driving transistor to the second node. The light-emitting control module controls a driving current generated by the driving transistor to flow into a light-emitting element to drive the light-emitting element to emit light.
    Type: Grant
    Filed: July 30, 2021
    Date of Patent: November 15, 2022
    Assignee: SeeYA Optronics Co., Ltd.
    Inventors: Ping-Lin Liu, Tong Wu
  • Patent number: 11502141
    Abstract: A display device including a display panel including pixels that emit light on a frame basis. An input sensing unit includes driving electrodes and sensing electrodes. A driving signal generator is configured to provide driving signals to the driving electrodes. Analog front-ends are configured to receive sensing signals depending on the driving signals from the sensing electrodes. A signal processor is configured to detect touch input, based on differential output values of the analog front-ends. The driving signal generator provides the driving signals to the driving electrodes while avoiding a period in which a pulse of a vertical synchronization signal defining start of the frame is generated.
    Type: Grant
    Filed: March 11, 2021
    Date of Patent: November 15, 2022
    Assignee: Samsung Display Co., Ltd.
    Inventors: In Nam Lee, Jang Hui Kim, Choon Hyop Lee
  • Patent number: 11501708
    Abstract: Provided are a pixel driving circuit, a driving method and a display panel. The pixel driving circuit includes a driving transistor, a storage sub-circuit, a data writing sub-circuit, an initialization sub-circuit, a first light-emission control sub-circuit, a second light-emission control sub-circuit and a light-emitting element. The data writing sub-circuit is configured to write a data signal to a first electrode of the driving transistor in response to a second scan signal. The storage sub-circuit is configured to store the data signal written by the data writing sub-circuit. The initialization sub-circuit is configured to apply a reset voltage of an initial voltage terminal to the light-emitting element in response to a first scan signal. The first light-emission control sub-circuit is configured to apply a voltage of a first power terminal to the first electrode of the driving transistor in response to a first light-emission signal.
    Type: Grant
    Filed: June 23, 2021
    Date of Patent: November 15, 2022
    Assignees: Chengdu BOE Optoelectronics Technology Co., Ltd., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Yao Huang, Yue Long, Weiyun Huang, Benlian Wang
  • Patent number: 11503241
    Abstract: A readout integrated circuit configured to read out sensing signals from an optical sensing panel is provided. The optical sensing panel includes a sensor array for fingerprint sensing. The readout integrated circuit includes a plurality of input terminals, a first discharging circuit and a control circuit. The plurality of input terminals are configured to be coupled to a plurality of output terminals of the optical sensing panel. The first discharging circuit is coupled to one of the plurality of input terminals. The first discharging circuit is configured to discharge one of the plurality of output terminals of the optical sensing panel by a first current during a readout period. The readout integrated circuit reads out a voltage of the output terminal as a sensing signal. The control circuit is coupled to the first discharging circuit. The control circuit is configured to output at least one control signal to control an operating period of the first discharging circuit.
    Type: Grant
    Filed: February 5, 2021
    Date of Patent: November 15, 2022
    Assignee: Novatek Microelectronics Corp.
    Inventor: Chi-Ting Chen
  • Patent number: 11494035
    Abstract: A touch sensing apparatus is disclosed comprising a panel that defines a touch surface, a plurality of light emitters and detectors arranged along a perimeter of the panel. The light emitters are arranged to emit a respective beam of emitted light that travels above the touch surface, wherein the light detectors are arranged to receive detection light from the emitted light. The plurality of light emitters and detectors are arranged above the touch surface and are connected to a substrate extending in a direction parallel with a normal axis of a plane in which the panel extends. A method of assembling a touch sensing apparatus is also disclosed.
    Type: Grant
    Filed: February 3, 2022
    Date of Patent: November 8, 2022
    Assignee: FlatFrog Laboratories AB
    Inventors: Daniel Skagmo, Robert Ehn, Hakan Bergstrom
  • Patent number: 11494032
    Abstract: A capacitive touch screen display operates by: receiving a plurality of sensed signals indicating variations in mutual capacitance associated with a plurality of cross points formed by a plurality of electrodes of a sensor layer adjacent to a compressible dielectric layer adjacent; generating capacitance image data associated with the plurality of cross points that includes positive capacitance variation data corresponding to positive variations of the capacitance image data from a nominal value and negative capacitance variation data corresponding to negative variations of the capacitance image data from the nominal value; and processing the negative capacitance variation data to determine a compressive touch condition of the touch screen display by a non-conductive object.
    Type: Grant
    Filed: January 19, 2022
    Date of Patent: November 8, 2022
    Assignee: SigmaSense, LLC.
    Inventors: Richard Stuart Seger, Jr., Michael Shawn Gray, Daniel Keith Van Ostrand, Hans Howard Eilers, Kevin Joseph Derichs, Sarah Marie Derichs, Patrick Troy Gray, Phuong Huynh
  • Patent number: 11494017
    Abstract: The present disclosure provides a touch display device including an organic light emitting diode (OLED) display panel and a touch layer. The OLED display panel includes a common cathode and a plurality of redundant cathodes. The common cathode and the plurality of redundant cathodes are located in a same conductive layer. The touch layer is disposed on a side of the OLED display panel. The touch layer includes a plurality of touch electrodes. Orthographic projections of the touch electrodes on the touch display device partially overlap orthographic projections of the plurality of redundant cathodes on the touch display device.
    Type: Grant
    Filed: July 29, 2020
    Date of Patent: November 8, 2022
    Assignee: WUHAN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO., LTD.
    Inventor: Jian Ye
  • Patent number: 11487383
    Abstract: An electronic device includes a display panel displaying an image, an input sensor disposed on the display panel, and a sensor controller electrically connected to the input sensor. The sensor controller provides search signals to the input sensor in a first search period in a first input sensing frame in a first mode, senses a first input provided by an input device through the input sensor in the first mode, generates an integrated signal using a sensing signal and one of the search signals, provides the integrated signal to the input sensor in an integrated sensing period in a second input sensing frame in a second mode, and senses a second input in the second mode. The search signals are communicated through different protocols, respectively.
    Type: Grant
    Filed: June 24, 2021
    Date of Patent: November 1, 2022
    Inventor: Soongyu Lee
  • Patent number: 11487373
    Abstract: A display device featuring a touch detection and a fingerprint imaging functions is provided. A display device includes a light-emitting element and a light-receiving element. The light-emitting element includes a first pixel electrode, a light-emitting layer, and a common electrode, and the light-receiving element includes a second pixel electrode, an active layer, and the common electrode. The first pixel electrode and the second pixel electrode are provided on the same plane. The common electrode overlaps with the first pixel electrode with the light-emitting layer therebetween, and overlaps with the second pixel electrode with the active layer therebetween. A first conductive layer, a second conductive layer, and an insulating layer are provided above the common electrode. The insulating layer is provided above the first conductive layer, and the second conductive layer is provided above the insulating layer.
    Type: Grant
    Filed: September 21, 2020
    Date of Patent: November 1, 2022
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Daisuke Kubota, Ryo Hatsumi, Taisuke Kamada, Koji Kusunoki, Kazunori Watanabe, Susumu Kawashima, Kensuke Yoshizumi
  • Patent number: 11487386
    Abstract: A touch screen controller, a touch screen driving circuit and a touch screen system are provided. The touch screen driving circuit configured to drive a touch screen includes an analog driving circuit configured to provide driving signals to a display panel and a touch panel of the touch screen, and generate a touch sensing value based on a touch sensing signal from the touch panel; a display noise table (DNT) comprising display noise information indicating display noise that varies according to a driving state of the touch screen and image data; a feature extractor configured to extract a plurality of feature values from the driving state and the image data; and a touch processor configured to read a display noise value mapped to the plurality of feature values from the DNT, subtract the display noise value from the touch sensing value and generate a touch value.
    Type: Grant
    Filed: May 12, 2021
    Date of Patent: November 1, 2022
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventor: Changju Lee
  • Patent number: 11481068
    Abstract: An input-display device includes a display screen with display pixels, capacitive sensing electrodes for capacitive sensing in a sensing region of the display screen, and a gate driver circuit associated with the display screen. The gate driver circuit superimposes a critical time window on a full-duration gate control pulse of a gate control signal. The critical time window partially overlaps with the full-duration gate control pulse at least at an end of the full-duration gate control pulse. The gate driver circuit further determines that a transient in a sensing waveform of the capacitive sensing occurs in the critical time window superimposed on the full-duration gate control pulse, and based on the determination, shorten the full-duration gate control pulse to obtain a reduced-duration gate control pulse. The gate driver circuit provides the reduced-duration gate control pulse to a pixel circuit of one of the display pixels.
    Type: Grant
    Filed: September 9, 2021
    Date of Patent: October 25, 2022
    Assignee: Synaptics Incorporated
    Inventor: Guozhong Shen
  • Patent number: 11481058
    Abstract: The disclosure provides a touch display device, a touch display panel, a touch display panel and a driving method. The touch display panel includes a first substrate, multiple micro light emitting devices, multiple micro driving devices and multiple touch driving electrodes. Each micro driving device corresponds to the multiple micro light emitting devices to drive the multiple micro light emitting devices to emit light. At least one touch driving electrode corresponds to at least one micro driving device. The touch driving electrode receives a signal transmitted to a corresponding micro driving device as a touch driving signal, or, the touch driving electrode receives a signal outputted by the corresponding micro driving device as the touch driving signal. Therefore, there is no need for a main driver chip to provide the touch driving signal to the touch driving electrode. Thus, the power consumption of the main driver chip is greatly reduced.
    Type: Grant
    Filed: July 6, 2021
    Date of Patent: October 25, 2022
    Assignee: Shanghai Tianma Micro-Electronics Co., Ltd.
    Inventor: Yingteng Zhai
  • Patent number: 11475811
    Abstract: Embodiments of the present disclosure provide a flexible display substrate, a method for controlling same, and a display device. The flexible display substrate includes: a flexible base, having a display region and a bonding region; and a touch module, on a side of the flexible base, and having a plurality of touch electrodes. Each of the touch electrodes is connected to one connecting line. The touch electrodes are inside the display region. The connecting line extends to the bonding region. At least two of the connecting lines are connected to at least one pair of capacitor metal blocks. Each pair of the capacitor metal blocks are symmetrically distributed along a bending line. The flexible base is allowed to be bent along the bending line.
    Type: Grant
    Filed: September 3, 2021
    Date of Patent: October 18, 2022
    Assignees: Chengdu BOE Optoelectronics Technology Co., Ltd., BEIJING BOE TECHNOLOGY DEVELOPMENT CO., LTD.
    Inventors: Yang Yang, Xiaofeng Luo, KwangGyun Jang, Jaeseung Kim, Hongqiang Luo
  • Patent number: 11474631
    Abstract: An electronic device including: a display layer; and a sensor layer that includes: first electrodes in a sensing area and having different lengths; second electrodes in the sensing area; first cross electrodes in the sensing area; second cross electrodes in the sensing area and having different lengths; pads in a peripheral area; first lines extended from the first electrodes at a first side of the sensing area towards the pads; second lines extended from the second electrodes at a second side of the sensing area towards the pads; first cross lines extending from the first cross electrodes towards the pads; and second cross lines extending from the second cross electrodes towards the pads, the first lines being different from the second lines in number, and the first cross lines being different from the second cross lines in number.
    Type: Grant
    Filed: June 28, 2021
    Date of Patent: October 18, 2022
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Jungmok Park, Tae Yong Eom, Hyun-Wook Cho, Dongjin Moon, Yeri Jeong
  • Patent number: 11467725
    Abstract: An operation target switching apparatus includes: a display part that displays an operation target that a user can select and operate; an operation input part that receives an input of a touch operation on an operation part not dedicated to an instruction for switching selection of the operation target; and a hardware processor that switches the selection of the operation target, in accordance with a mode of the touch operation.
    Type: Grant
    Filed: November 2, 2020
    Date of Patent: October 11, 2022
    Assignee: Konica Minolta, Inc.
    Inventor: Jo Shikama
  • Patent number: 11467700
    Abstract: A detection device is configured to detect an electrostatic capacitance between an operated member having a plurality of detection areas and an electrode having areas associated with the detection areas respectively. A control device is configured to determine whether an operation is performed to each of the detection areas based on whether a difference between the electrostatic capacitance and a reference electrostatic capacitance exceeds a threshold range, and to change the reference electrostatic capacitance based on a change in the electrostatic capacitance. The control device holds the reference electrostatic capacitance in a case where different changes in the electrostatic capacitance are detected between the detection areas.
    Type: Grant
    Filed: May 27, 2021
    Date of Patent: October 11, 2022
    Assignee: KABUSHIKI KAISHA TOKAI RIKA DENKI SEISAKUSHO
    Inventors: Takao Imai, Katsuhiro Tsuchiya, Shingo Yuasa
  • Patent number: 11468857
    Abstract: A driver circuit includes first to third transistors, a first circuit, and a second circuit. In the first transistor, a first terminal is electrically connected to a second wiring, a second terminal is electrically connected to a first wiring, and a gate is electrically connected to the second circuit and a first terminal of the third transistor. In the second transistor, a first terminal is electrically connected to the first wiring, a second terminal is electrically connected to a sixth wiring, a gate is electrically connected to the first circuit and a gate of the third transistor. A second terminal of the third transistor is electrically connected to the sixth wiring. The first circuit is electrically connected to a third wiring, a fourth wiring, a fifth wiring, and the sixth wiring. The second circuit is electrically connected to the first wiring, the second wiring, and the sixth wiring.
    Type: Grant
    Filed: October 15, 2021
    Date of Patent: October 11, 2022
    Inventor: Atsushi Umezaki