Patents Assigned to FocalTech Electronics (Shenzhen) Co., Ltd.
  • Patent number: 12095455
    Abstract: A level shift circuit converts input signals in a first voltage domain into output signals in a second voltage domain. The level shift circuit includes a first voltage domain circuit, a middle voltage domain circuit, and a second voltage domain circuit. The middle voltage domain circuit convert the signals in the first voltage domain received by the first voltage domain circuit into signals in a middle voltage domain. The second voltage domain circuit converts the signals in the middle voltage domain into signals in the second voltage domain and outputs the converted signals. The signals in the middle voltage domain are partly different from the signals in the first voltage domain and the second voltage domain. Each signal in the first voltage domain is different from the signals in the second voltage domain. A display apparatus is also disclosed.
    Type: Grant
    Filed: March 12, 2021
    Date of Patent: September 17, 2024
    Assignee: FocalTech Electronics (Shenzhen) Co., Ltd.
    Inventors: Xin-Xi Jiang, Tian-Qi Sun, Zhen-Juan Cheng, Jing-Kai Zhang
  • Patent number: 12014004
    Abstract: A touch control method, a touch control circuit system, and a touch device, the touch device includes a plurality of touch electrodes, the touch control method includes: step S1, sending a scanning signal to the plurality of touch electrodes; step S2, acquiring first touch data and second touch data according to the scanning signal; and step S3, the touch device defining a plurality of touch nodes, each of the plurality of touch nodes corresponding to the first touch data and the second touch data, defining at least one target touch node according to a difference between the first touch data and the second touch data, and calculating a current touch position according to the first touch data and the second touch data of the at least one target touch node.
    Type: Grant
    Filed: February 26, 2020
    Date of Patent: June 18, 2024
    Assignee: FocalTech Electronics (Shenzhen) Co., Ltd.
    Inventors: Wei-Jing Hou, Jian-Wu Chen, Hui-Dan Xiao, Da-Chun Wu, Zhen-Huan Mou, You-Gang Gong, Guan-Qun Pan
  • Patent number: 11966245
    Abstract: The present disclosure provides a voltage reference source circuit for generating a reference voltage, the voltage reference source circuit comprises a starting circuit, a current generating circuit, and an output voltage reference circuit electrically connected in sequence. The starting circuit provides a starting voltage for the voltage reference source circuit to prevent the voltage reference source circuit from operating in zero state area. The current generating circuit generates a working current for the output voltage reference circuit; and the output voltage reference circuit is used to realize the reference voltage output with zero temperature coefficient according to the working current output by the current generating circuit. A low power consumption power supply system is also disclosed.
    Type: Grant
    Filed: July 30, 2021
    Date of Patent: April 23, 2024
    Assignee: FocalTech Electronics (Shenzhen) Co., Ltd.
    Inventors: Zhen-Juan Cheng, Jing-Kai Zhang, Jin-Cheng Tian, Xin-Xi Jiang
  • Patent number: 11934610
    Abstract: A touch control method is provided. The touch control method is applied in a touch device including a plurality of touch electrodes, the touch control method includes: step S1, sending a scanning signal to the plurality of touch electrodes, the scanning signal being a multi-frequency scanning signal; step S2, acquiring touch data according to the multi-frequency scanning signal; and step S3, calculating a current touch position according to the touch data.
    Type: Grant
    Filed: February 26, 2020
    Date of Patent: March 19, 2024
    Assignee: FocalTech Electronics (Shenzhen) Co., Ltd.
    Inventors: Wei-Jing Hou, Jian-Wu Chen, Hui-Dan Xiao, Da-Chun Wu, Zhen-Huan Mou, You-Gang Gong, Guan-Qun Pan
  • Patent number: 11791771
    Abstract: A method for calibrating a first clock signal output by an oscillation module to obtain a calibrated second clock signal includes obtaining a first count value by counting a third clock signal of an external device. A second count value is obtained by counting a scan signal of the oscillation module, and a first cycle ratio is obtained based on the first count value and the second count value. It is determined whether the first clock signal has a frequency deviation by comparing the first cycle ratio with a reference cycle ratio. A frequency division coefficient of the oscillation module is adjusted when the first clock signal has the frequency deviation, so that the oscillation module divides a frequency of the first clock signal according to the adjusted frequency division coefficient, thereby obtaining the calibrated second clock signal.
    Type: Grant
    Filed: August 31, 2022
    Date of Patent: October 17, 2023
    Assignee: FocalTech Electronics (Shenzhen) Co., Ltd.
    Inventors: Bei Xiao, Xiao-Lin Huang, Zhi-Qiang Luo
  • Patent number: 11726606
    Abstract: A touch control method applied in a touch device, the touch display working during a plurality of display frames, a first-type blank period being between each two adjacent display frames, and each of the plurality of display frames comprising at least one second-type blank period and at least one third-type blank period; the touch detection method comprising: detecting a touch operation of a first touch object in at least one of the first-type blank period; judging whether a second touch object being detected in the at least one second-type blank period; and according to a result of the judging, detecting the touch operation of the first touch object or/and the second touch object in at least parts of the at least one third-type blank period. A driver and a touch display device is also provided.
    Type: Grant
    Filed: February 26, 2020
    Date of Patent: August 15, 2023
    Assignee: FocalTech Electronics (Shenzhen) Co., Ltd.
    Inventor: Weiping Liu
  • Patent number: 11025154
    Abstract: A gate driving circuit for a charge pump with slowed rates of current change for reduced EMI emissions includes at least one gate driving sub-circuit. Each gate driving sub-circuit includes a first current mirror, a first PMOS transistor, a first NMOS transistor, and a second current mirror. Gates of the first PMOS transistor and the first NMOS transistor receive a clock signal. Drains of the first PMOS transistor and the first NMOS transistor output a driving signal. When the first PMOS transistor is turned on, the first current mirror provides a charging current. When the first NMOS transistor is turned on, the second current mirror provides a discharge current.
    Type: Grant
    Filed: May 7, 2020
    Date of Patent: June 1, 2021
    Assignee: FocalTech Electronics (Shenzhen) Co., Ltd.
    Inventor: Jun-Qiao Liu
  • Patent number: 10558300
    Abstract: A driving method for an in-cell touch display and a mobile device using the same are provided. The driving method for an in-cell touch display comprises the steps of: dividing a frame period into N display/touch detection sub-periods each comprising a display sub-period and a touch detection sub-period; dividing scan lines into M scan-line sets, wherein a position of each of the scan-line sets corresponds to at least one of touch sensors; supplying a display common voltage to the touch sensor corresponding to the Ith scan-line set when the scan line being scanned in the display sub-period of the Kth display/touch detection sub-period comprises the scan line of the Ith scan-line set, wherein N, M, K and I are natural numbers, K is smaller than or equal to N, and I is smaller than or equal to M.
    Type: Grant
    Filed: July 24, 2019
    Date of Patent: February 11, 2020
    Assignee: Focaltech Electronics, Ltd.
    Inventors: Ho-Nien Yang, Shen-Chia Huang
  • Patent number: 10402012
    Abstract: A driving method for an in-cell touch display and a mobile device using the same are provided. The driving method for an in-cell touch display comprises the steps of: dividing a frame period into N display/touch detection sub-periods each comprising a display sub-period and a touch detection sub-period; dividing scan lines into M scan-line sets, wherein a position of each of the scan-line sets corresponds to at least one of touch sensors; supplying a display common voltage to the touch sensor corresponding to the Ith scan-line set when the scan line being scanned in the display sub-period of the Kth display/touch detection sub-period comprises the scan line of the Ith scan-line set, wherein N, M, K and I are natural numbers, K is smaller than or equal to N, and I is smaller than or equal to M.
    Type: Grant
    Filed: August 15, 2016
    Date of Patent: September 3, 2019
    Assignee: Focaltech Electronics, Ltd.
    Inventors: Ho-Nien Yang, Shen-Chia Huang
  • Patent number: 9836172
    Abstract: A touch apparatus, a capacitive touch sensing circuit of the touch apparatus, and a touch sensing method are provided. The capacitive touch sensing circuit includes a switching capacitor integrating circuit, an encoding circuit, a feedback circuit, and a decoding circuit. The switching capacitor integrating circuit receives an input signal and integrates the input signal to generate an output signal. The encoding circuit receives and encodes the output signal to generate an encoded result. The feedback circuit provides a charge dissipation path for discharging charges from the switching capacitor integrating circuit, and the feedback circuit receives the encoded result and adjusts a charge dissipation ability provided by the charge dissipation path according to the encoded result. The decoding circuit receives and decodes the output signal to generate a touch detecting result.
    Type: Grant
    Filed: February 4, 2016
    Date of Patent: December 5, 2017
    Assignee: FocalTech Electronics, Ltd.
    Inventor: Yao-Hung Lai
  • Publication number: 20160378262
    Abstract: It is provided a self-capacitance touch screen detection method, device and system. The method includes: receiving a scanning waveform by a currently detected channel of a self-capacitance touch screen; inputting the voltage of the scanning waveform into an input terminal of a voltage following unit, and driving at least a preset channel that is adjacent to the currently detected channel of the self-capacitance touch screen via an output terminal of the voltage following unit; and calculating self-capacitance touch screen coordinate data for a touch in the currently detected channel. The method not only avoids the disturbance to the detection for a touch in the currently detected channel generated due to water vapor or a water droplet, but also obtains an increased relative change generated by the same touch, and thereby the detection sensibility of the self-capacitance touch screen is improved.
    Type: Application
    Filed: September 9, 2016
    Publication date: December 29, 2016
    Applicant: FocalTech Electronics, Ltd.
    Inventors: Lianghua MO, Weiping LIU
  • Patent number: 9189117
    Abstract: A touch control display device is provided according to embodiments of the disclosure. The touch control display device includes: a first substrate, a second substrate, a liquid crystal layer disposed between the first substrate and the second substrate, a common electrode and a plurality of pixel units; and a plurality of touch sensing electrodes disposed above the common electrode, where the plurality of touch sensing electrodes are arranged in a two-dimensional array. With the solution according to the embodiments of the disclosure, the noise can be reduced and the frame rate of touch detection scan can be enhanced.
    Type: Grant
    Filed: December 16, 2013
    Date of Patent: November 17, 2015
    Assignee: Focaltech Electronics, LTD.
    Inventors: Lianghua Mo, Guang Ouyang