Patents by Inventor Weize Xu

Weize Xu has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20210097934
    Abstract: A pixel circuit, a driving method and a display apparatus are provided. The pixel circuit includes: a signal input sub-circuit, a data input sub-circuit, a light emitting control sub-circuit, a compensation sub-circuit, a capacitor sub-circuit, a driving transistor and a light emitting device. By the cooperation of the above sub-circuits and elements, a threshold voltage of the driving transistor can be compensated, and a voltage of a first power terminal can also be compensated.
    Type: Application
    Filed: July 23, 2020
    Publication date: April 1, 2021
    Inventors: Zuwei WENG, Yupeng HUANG, Weize XU, Han WU
  • Publication number: 20210091724
    Abstract: Examples provide methods and apparatus for controlling a DC bias current in an RF amplifier. In one example where the RF amplifier is implemented on an amplifier die, a reference voltage is produced across a reference resistor implemented on the amplifier die, the DC bias current is measured, and a current controller, which is implemented on a controller die that is separate from the amplifier die, operates a feedback loop using the reference voltage to control a level of the DC bias current.
    Type: Application
    Filed: August 31, 2020
    Publication date: March 25, 2021
    Inventors: Douglas M. Johnson, Guillaume Alexandre Blin, Michael John Mitzen, Jung Hee Lee, Weize Xu, Attila Kalamar
  • Patent number: 10937350
    Abstract: A voltage control circuit and a method of controlling the same, and a display device are provided. The comparison sub-circuit is coupled to a first reference voltage end, a second reference voltage end, a feedback voltage end and a comparison output end which is coupled to the switching sub-circuit. The switching sub-circuit is further coupled to an output voltage end, an initial voltage end and a replacement voltage end. The comparison sub-circuit determines whether a voltage of the feedback voltage end is between the first reference voltage and the second reference voltage. The switching sub-circuit transmits a voltage of the initial voltage end to the output voltage end in response to a first control signal of the comparison output end; transmit a voltage of the replacement voltage end to the output voltage end in response to a second control signal of the comparison output end.
    Type: Grant
    Filed: December 12, 2019
    Date of Patent: March 2, 2021
    Assignees: FUZHOU BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Weize Xu, Yichiang Lai, Zuwei Weng, Bin Weng, Jiujian Han, Qianglong Li, Nani Liu, Yupeng Huang
  • Patent number: 10923035
    Abstract: A pixel circuit includes an input module, an emission control module, a compensation module, a driving transistor and a light emitting device. The input module is configured to provide a signal of a data signal terminal to a gate of the driving transistor and provide a signal of an initialization signal terminal to a second electrode of the driving transistor. The compensation module is configured to provide a signal of a power supply voltage terminal to a first electrode of the driving transistor. The emission control module is configured to provide a signal of a reference voltage signal terminal to the gate of the driving transistor and conduct the second electrode of the driving transistor with the light emitting device.
    Type: Grant
    Filed: July 27, 2020
    Date of Patent: February 16, 2021
    Assignees: Fuzhou BOE Optoelectronics Technology Co., Ltd., BOE Technology Group Co., Ltd.
    Inventors: Zuwei Weng, Yupeng Huang, Weize Xu
  • Patent number: 10914792
    Abstract: A linearity compensation circuit is disclosed for improving the linearity of a sensing signal. The linearity compensation circuit may include a compensator that is capable of receiving a sensing signal from a sensor and generating a compensation signal based on the sensing signal. The linearity compensation circuit may also include an output circuit that is capable of combining the compensation signal and the sensing signal to generate a compensated signal that exhibits an improved linearity. Also disclosed is a sensing apparatus which includes a sensor and the linearity compensation circuit. The sensing apparatus may thus be able to generate a sensing signal that is linear over a wider dynamic range.
    Type: Grant
    Filed: April 21, 2018
    Date of Patent: February 9, 2021
    Assignee: ACEINNA TRANSDUCER SYSTEMS CO., LTD.
    Inventors: Leyue Jiang, Alexander Dribinsky, Bin Liu, Weize Xu
  • Publication number: 20200357319
    Abstract: A signal protection circuit, a driving method thereof, and a device. A voltage division circuit divides a voltage of an input signal end and outputs a divided voltage. When the divided voltage is greater than a first threshold voltage and the divided voltage is less than a second threshold voltage, a signal control circuit outputs a first-level switch control signal. In this way, an output control circuit can connect the input signal end with an output signal end in response to the first-level switch control signal. When the divided voltage is less than the first threshold voltage or the divided voltage is greater than the second threshold voltage, the signal control circuit may output a second-level switch control signal. In this way, the output control circuit can connect the input signal end with a ground terminal in response to the second-level switch control signal.
    Type: Application
    Filed: January 3, 2019
    Publication date: November 12, 2020
    Inventors: Weize XU, Yichiang LAI, Zuwei WENG, Bin WENG, Jiujian HAN, Qianglong LI, Nani LIU, Yupeng HUANG
  • Publication number: 20200279516
    Abstract: A gate driving signal detection circuit, a method, and a display device are provided, the gate driving signal detection circuit includes a switch sub-circuit and a test signal line, during a blank time period and an interval time period, the switch sub-circuit controls writing of a clock signal output by a clock signal line into the test signal line; during a output time period of each stage of gate driving signal, when a potential of the gate driving signal is an effective level, the switch sub-circuit controls to establish a connection between a corresponding gate driving signal output terminal and the test signal line, when the potential of the gate driving signal is an ineffective level, the switch sub-circuit controls to disconnect the connection between the corresponding gate driving signal output terminal and the test signal line.
    Type: Application
    Filed: June 10, 2019
    Publication date: September 3, 2020
    Applicants: FUZHOU BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Zuwei WENG, Weize XU
  • Publication number: 20200265765
    Abstract: A voltage control circuit and a method of controlling the same, and a display device are provided. The comparison sub-circuit is coupled to a first reference voltage end, a second reference voltage end, a feedback voltage end and a comparison output end which is coupled to the switching sub-circuit. The switching sub-circuit is further coupled to an output voltage end, an initial voltage end and a replacement voltage end. The comparison sub-circuit determines whether a voltage of the feedback voltage end is between the first reference voltage and the second reference voltage. The switching sub-circuit transmits a voltage of the initial voltage end to the output voltage end in response to a first control signal of the comparison output end; transmit a voltage of the replacement voltage end to the output voltage end in response to a second control signal of the comparison output end.
    Type: Application
    Filed: December 12, 2019
    Publication date: August 20, 2020
    Applicants: FUZHOU BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Weize XU, Yichiang LAI, Zuwei WENG, Bin WENG, Jiujian HAN, Qianglong LI, Nani LIU, Yupeng HUANG
  • Patent number: 10643575
    Abstract: The present disclosure relates to display technologies, and particularly to a clock signal auxiliary circuit and a display device. The circuit can include a voltage detection circuit, a thermal sensitive sensing circuit, a control circuit, a switch selection circuit, and a signal amplification circuit. The clock signal auxiliary circuit can generate different detection signals according to different ambient temperatures during operation, and generate different control signals according to different detection signals, so as to turn on different channels according to different control signals, pull the clock signal that is finally output to the output end up to the correct potential, and generate correct scan signals at different ambient temperatures according to the clock signal pulled up to the correct potential.
    Type: Grant
    Filed: May 6, 2019
    Date of Patent: May 5, 2020
    Assignees: Fuzhou BOE Optoelectronics Technology Co., Ltd., BOE TECHNOLOGY GROUP CO., LTD.
    Inventor: Weize Xu
  • Publication number: 20200020299
    Abstract: The present disclosure relates to display technologies, and particularly to a clock signal auxiliary circuit and a display device. The circuit can include a voltage detection circuit, a thermal sensitive sensing circuit, a control circuit, a switch selection circuit, and a signal amplification circuit. The clock signal auxiliary circuit can generate different detection signals according to different ambient temperatures during operation, and generate different control signals according to different detection signals, so as to turn on different channels according to different control signals, pull the clock signal that is finally output to the output end up to the correct potential, and generate correct scan signals at different ambient temperatures according to the clock signal pulled up to the correct potential.
    Type: Application
    Filed: May 6, 2019
    Publication date: January 16, 2020
    Inventor: Weize XU
  • Publication number: 20180306871
    Abstract: A linearity compensation circuit is disclosed for improving the linearity of a sensing signal. The linearity compensation circuit may include a compensator that is capable of receiving a sensing signal from a sensor and generating a compensation signal based on the sensing signal. The linearity compensation circuit may also include an output circuit that is capable of combining the compensation signal and the sensing signal to generate a compensated signal that exhibits an improved linearity. Also disclosed is a sensing apparatus which includes a sensor and the linearity compensation circuit. The sensing apparatus may thus be able to generate a sensing signal that is linear over a wider dynamic range.
    Type: Application
    Filed: April 21, 2018
    Publication date: October 25, 2018
    Inventors: Leyue Jiang, Alexander Dribinsky, Bin Liu, Weize Xu
  • Patent number: 8253214
    Abstract: An image sensor includes a unit cell having a plurality of pixels; the unit cell comprising an amplifier input transistor that is shared by the plurality of pixels; a plurality of floating diffusions that are joined by a floating diffusion interconnect layer and are connected to the amplifier input transistor; and an interconnect layer which forms an output signal wire which shields the floating diffusion interconnect layer.
    Type: Grant
    Filed: May 25, 2006
    Date of Patent: August 28, 2012
    Assignee: Omnivision Technologies, Inc.
    Inventors: Robert M. Guidash, Ravi Mruthyunjaya, Weize Xu
  • Patent number: 7652706
    Abstract: An image sensor includes a photosensitive region that accumulates charge corresponding to received incident light; a transfer gate for transferring charge from the photosensitive region; a voltage supply having an increasing voltage over time; a floating diffusion for receiving the charge from the photosensitive region and converting the charge to a voltage; an amplifier for receiving and amplifying a signal from the floating diffusion; a comparator for comparing a voltage from the amplifier to a reference voltage; and a counter for counting clock cycles between initiation of the increasing voltage until a signal is received from the comparator indicating charge transfer from the photosensitive region to the floating diffusion; wherein a digital signal is generated that represents an unfilled capacity of the photosensitive region.
    Type: Grant
    Filed: February 15, 2006
    Date of Patent: January 26, 2010
    Assignee: Eastman Kodak Company
    Inventor: Weize Xu
  • Patent number: 7593050
    Abstract: An image sensor includes a plurality of pixels for capturing an image; a sample and hold circuit array having a plurality of units for receiving signals from the plurality of pixels representing the captured image; a decoder for selecting each of the units of the sample and hold circuit array for output; and a delay circuit that includes an adjustable time delay to the decoder for compensating for time delays.
    Type: Grant
    Filed: February 27, 2006
    Date of Patent: September 22, 2009
    Assignee: Eastman Kodak Company
    Inventor: Weize Xu
  • Patent number: 7465934
    Abstract: A CMOS image sensor includes a plurality of pixels arranged in an array; a plurality of sample and hold arrays; and a routing matrix which routes a signal from each pixel to one of the sample and hold arrays in a predetermined order.
    Type: Grant
    Filed: September 30, 2005
    Date of Patent: December 16, 2008
    Assignee: Eastman Kodak Company
    Inventor: Weize Xu
  • Publication number: 20080239105
    Abstract: A CMOS image sensor includes a photodiode for receiving incident light that is converted to a charge signal; a transfer mechanism for transferring the charge to a sensing node that converts the charge signal to an image voltage signal; and a sample-and-hold circuit. The sample-and-hold circuit includes a capacitor that receives the image voltage signal; and only one buffer amplifier that passes the image voltage signal to a differential amplifier. The buffer amplifier also receives a reset signal that is passed to the differential amplifier.
    Type: Application
    Filed: March 30, 2007
    Publication date: October 2, 2008
    Inventor: Weize Xu
  • Publication number: 20080204567
    Abstract: An active pixel image sensor comprising: (a) a pixel array having a plurality of pixels, each pixel comprising: (i) a photosensitive region connected to a charge-to-voltage conversion region; and (ii) an amplifier connected to the charge-to-voltage conversion region; and (b) a sample and hold circuit connected to one or more pixels comprising: (i) two capacitors for receiving and storing a reset signal and an image signal; (ii) two buffer amplifiers for respectively receiving the reset signal and the image signal respectively from the two capacitors; and (iii) a reference generator circuit connected to an input of the buffer amplifiers for removing offset of the buffer amplifier.
    Type: Application
    Filed: February 23, 2007
    Publication date: August 28, 2008
    Inventor: Weize Xu
  • Publication number: 20080169845
    Abstract: A CMOS image sensor includes a photosensitive region for collecting charge in response to incident light; a charge-to-voltage mechanism for receiving the charge from the photosensitive region and converting the charge to a voltage; an amplifier for receiving and amplifying the voltage; a sample and hold circuit includes (i) a first capacitor one for receiving the voltage and a second capacitor for receiving a reset level; a first bus for receiving the voltage from the first capacitor and a second bus for receiving the reset level from the second capacitor; a differential difference amplifier for receiving the image voltage and the reset level and for determining a difference level between the image voltage and the reset level and for removing offset of the amplifier; and first and second switches respectively connected to the first and second bus for providing an electrical path for removing charge from each bus.
    Type: Application
    Filed: January 12, 2007
    Publication date: July 17, 2008
    Inventor: Weize Xu
  • Patent number: 7385636
    Abstract: An image sensor includes a plurality of pixels for capturing incident light that is converted to a signal representing an image; wherein noise is combined with a signal representing both the image and a reset level; a plurality of dark reference pixels that generate noise that substantially correspond or equally correspond to the noise in the image and reset level; and a sample and hold circuit that reads out the image signal and cancels or substantially cancels out the noise from the image signal and reset level by canceling the noise from image and reset level with the noise generated from the dark reference pixels.
    Type: Grant
    Filed: April 30, 2004
    Date of Patent: June 10, 2008
    Assignee: Eastman Kodak Company
    Inventor: Weize Xu
  • Patent number: 7382008
    Abstract: An image sensor includes a photosensitive region that accumulates charge corresponding to received incident light; a transfer gate for transferring all or a portion of the charge from the photosensitive region; a voltage supply having an increasing voltage over time that is applied to the transfer gate; a floating diffusion for receiving the all or a portion of the charge from the photosensitive region and converting the charge to a voltage; an amplifier for receiving and amplifying a signal from the floating diffusion; a pulse detector for detecting a voltage pulse from the amplifier; and a counter for counting clock cycles between initiation of the increasing voltage until a signal is received from the detector which indicates initiation of charge transfer from the photosensitive region to the floating diffusion.
    Type: Grant
    Filed: May 2, 2006
    Date of Patent: June 3, 2008
    Assignee: Eastman Kodak Company
    Inventor: Weize Xu