Patents by Inventor Guanghai Jin

Guanghai Jin 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).

  • Patent number: 10429634
    Abstract: A microelectrical mechanical system (MEMS) implementation of tunable Fabry Perot filter devices is disclosed. The advantages associated with the use of these tunable etalons include increases in aperture size, displacement, reliability, and a reduction in cost. In some examples, integrated tunable detectors in miniature spectrometers using a thermal driven MEMS Fabry-Perot tunable filter are provided. Other examples use integrated thermal driven tunable MEMS Fabry-Perot filter to select fiber optical communication channel.
    Type: Grant
    Filed: December 4, 2017
    Date of Patent: October 1, 2019
    Assignee: Agiltron, Inc.
    Inventors: Guanghai Jin, Congshun Wang, Jing Zhao
  • Publication number: 20190171001
    Abstract: A microelectrical mechanical system (MEMS) implementation of tunable Fabry Perot filter devices is disclosed. The advantages associated with the use of these tunable etalons include increases in aperture size, displacement, reliability, and a reduction in cost. In some examples, integrated tunable detectors in miniature spectrometers using a thermal driven MEMS Fabry-Perot tunable filter are provided. Other examples use integrated thermal driven tunable MEMS Fabry-Perot filter to select fiber optical communication channel.
    Type: Application
    Filed: December 4, 2017
    Publication date: June 6, 2019
    Applicant: Agiltron, Inc.
    Inventors: Guanghai Jin, Congshun Wang, Luzhong Yin, Jing Zhao
  • Publication number: 20190169183
    Abstract: The present invention discloses to a hydrochloride salt, a citrate salt, a phosphate salt or a sulfate salt of compound 1, the crystal forms of the aforementioned salts, and a preparation method thereof. The present invention also relates their use in the preparation of a medicament for the treatment of cerebral apoplexy or epilepsy.
    Type: Application
    Filed: August 3, 2017
    Publication date: June 6, 2019
    Inventors: Qingqing Lu, Shenyi Shi, Tiezhong Bai, Shujie Yuan, Zhengwu Li, Qiaofen Hu, Yijie Cao, Jing Gao, Hui Ding, Jinhua Li, Guanghai Xu, Zheng Wang, Xin Jin
  • Patent number: 10134782
    Abstract: A thin-film transistor (TFT) array substrate including at least one TFT, the at least one TFT including a semiconductor layer including a source region and a drain region having a first doping concentration on a substrate, a channel region between the source and drain regions and having a second doping concentration, the second doping concentration being lower than the first doping concentration, and a non-doping region extending from the source and drain regions; a gate insulating layer on the semiconductor layer; a gate electrode on the gate insulating layer and at least partially overlapping the channel region; and a source electrode and a drain electrode insulated from the gate electrode and electrically connected to the source region and the drain region, respectively.
    Type: Grant
    Filed: August 6, 2015
    Date of Patent: November 20, 2018
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Guanghai Jin, Yongjoo Kim, Minhyeng Lee
  • Publication number: 20170183217
    Abstract: The present disclosure provides a displacement amplification structure and a method for controlling displacement. In one aspect, the displacement amplification structure of the present disclosure includes a first beam and a second beam substantially parallel to the first beam, an end of the first beam coupled to a fixture site, and an end of the second beam coupled to a motion actuator; and a motion shutter coupled to an opposing end of the first and second beams. In response to a displacement of the motion actuator along an axis direction of the second beam, the motion shutter displaces a distance along a transversal direction substantially perpendicular to the axis direction.
    Type: Application
    Filed: March 24, 2015
    Publication date: June 29, 2017
    Applicants: Agiltron, Inc., Agiltron, Inc.
    Inventors: Luzhong Yin, Jing Zhao, Guanghai Jin
  • Publication number: 20160178528
    Abstract: A device disclosed herein includes an optical detector that detects a specular reflection from a test article having a coating thereon. The device also includes a processor operatively coupled to the optical detector and configured to determine whether a contaminant is present at the coating based on the specular reflection and based on a calibration measurement determined from a test article having a known contaminant-free sample of the coating thereon. Another device disclosed herein includes an optical detector that detects a specular reflection from the test article having a coating thereon, with the specular reflection at an angle of less than 20° with respect to an axis normal to the test article. The device can further include a processor configured to determine whether contamination is present at the coating. Embodiments enable rapid, sensitive testing of epoxy and paint surfaces by minimally trained personnel.
    Type: Application
    Filed: December 19, 2014
    Publication date: June 23, 2016
    Inventors: Wayne A. Weimer, Guanghai Jin
  • Patent number: 9373652
    Abstract: Provided are a display apparatus and a method of manufacturing the display apparatus. The display apparatus includes: a substrate having a major surface; and a capacitor disposed over the substrate. The capacitor includes a first electrode, and a second electrode disposed over the first electrode. The second electrode includes a first region, a second region and an opening when viewed in a direction perpendicular to the major surface. The first region has a first thickness, and a second region has a second thickness that is greater than the first thickness.
    Type: Grant
    Filed: July 22, 2015
    Date of Patent: June 21, 2016
    Assignee: Samsung Display Co., Ltd.
    Inventors: Guanghai Jin, Nayoung Kim
  • Publication number: 20160079286
    Abstract: A thin-film transistor (TFT) array substrate including at least one TFT, the at least one TFT including a semiconductor layer including a source region and a drain region having a first doping concentration on a substrate, a channel region between the source and drain regions and having a second doping concentration, the second doping concentration being lower than the first doping concentration, and a non-doping region extending from the source and drain regions; a gate insulating layer on the semiconductor layer; a gate electrode on the gate insulating layer and at least partially overlapping the channel region; and a source electrode and a drain electrode insulated from the gate electrode and electrically connected to the source region and the drain region, respectively.
    Type: Application
    Filed: August 6, 2015
    Publication date: March 17, 2016
    Inventors: Guanghai JIN, Yongjoo KIM, Minhyeng LEE
  • Patent number: 9256065
    Abstract: A system having a MEMS variable optical attenuator (VOA) that has an improved optical shutter for regulating the optical power of an optical signal by partially intercepting incident light beams and a negative temperature coefficient component that is electrical connected in series with a voltage source that drives the MEMS variable optical attenuator (VOA) is disclosed.
    Type: Grant
    Filed: October 31, 2014
    Date of Patent: February 9, 2016
    Assignee: Agiltron, Inc.
    Inventors: Guanghai Jin, Luzhong Yin
  • Publication number: 20160027857
    Abstract: Provided are a display apparatus and a method of manufacturing the display apparatus. The display apparatus includes: a substrate having a major surface; and a capacitor disposed over the substrate. The capacitor includes a first electrode, and a second electrode disposed over the first electrode. The second electrode includes a first region, a second region and an opening when viewed in a direction perpendicular to the major surface. The first region has a first thickness, and a second region has a second thickness that is greater than the first thickness.
    Type: Application
    Filed: July 22, 2015
    Publication date: January 28, 2016
    Inventors: Guanghai Jin, Nayoung Kim
  • Patent number: 7825381
    Abstract: A micromechanical device including an improved sensing element and improved bending elements is described. Sensing elements include multi-layered structures which are thinner, lighter, and flatter than structures presently known within the related arts. Bending elements include structures which separately respond to illumination by an infrared source so as to twist a sensing element. Micromechanical pixels may be arranged to form two-dimensional arrays of infrared sensitive pixels. Arrays of micromechanical pixels are applicable to imaging devices for use within the fields of security and surveillance, firefighting, automotive safety, and industrial monitoring.
    Type: Grant
    Filed: February 27, 2008
    Date of Patent: November 2, 2010
    Assignee: Agiltron, Inc.
    Inventors: Matthew Erdtmann, Jing Zhao, Guanghai Jin
  • Patent number: 7705309
    Abstract: A mechanical-optical transducer comprises a readout illumination source providing light having different wavelengths or different polarization states; an image sensor array for sensing the light from the readout illumination source; and a mechanical-optical device including sensing pixels whose optical property change in response to incident thermal infrared radiation, the mechanical-optical device having a reflective surface disposed to selectively reflect light from the readout illumination source to the image sensor array.
    Type: Grant
    Filed: April 8, 2008
    Date of Patent: April 27, 2010
    Assignee: Agiltron Corporation
    Inventors: Guanghai Jin, Lei Zhang, Jing Zhao
  • Patent number: 7505192
    Abstract: An optical apparatus and methods for operating on a polarization state of a light beam using a compound tri-state non-reciprocal rotator having two Faraday rotators. A first Faraday rotator rotates the polarization state into one of two partially rotated states at angles +?, ??, where ?=22.5°, and the second Faraday rotates the polarization state from one of the partially rotated states into one of three fully rotated states at angles +2?, 0, ?2?. A polarization selection mechanism guides light in the three fully rotated states differently to enable various devices and different modes of operation. For example, the polarization selection mechanism can generate a tri-state output in the form of two distinct output beams corresponding to two of the three fully rotated states, and an overlapping pair of output beams obtained when the compound tri-state non-reciprocal rotator produces the third of the three fully rotated states.
    Type: Grant
    Filed: May 7, 2007
    Date of Patent: March 17, 2009
    Assignee: Agiltron, Inc.
    Inventors: Jing Zhao, Guanghai Jin, Yongjun Shu
  • Publication number: 20090001271
    Abstract: A micromechanical device including an improved sensing element and improved bending elements is described. Sensing elements include multi-layered structures which are thinner, lighter, and flatter than structures presently known within the related arts. Bending elements include structures which separately respond to illumination by an infrared source so as to twist a sensing element. Micromechanical pixels may be arranged to form two-dimensional arrays of infrared sensitive pixels. Arrays of micromechanical pixels are applicable to imaging devices for use within the fields of security and surveillance, firefighting, automotive safety, and industrial monitoring.
    Type: Application
    Filed: February 27, 2008
    Publication date: January 1, 2009
    Inventors: Matthew Erdtmann, Jing Zhao, Guanghai Jin
  • Patent number: 6757101
    Abstract: The present invention provides improved optical switches in which no mechanical movement is required to direct optical pathways between plural fiber ports. Advantageously, the inventive switches incorporate two-stage polarization rotation to improve isolation depth, as well as temperature and wavelength independence. The inventive switches also incorporate light bending devices to allow two fibers to be coupled to the light beams using a single lens achieving small beam separation for compactness. In the inventive switch, an optical signal is spatially split into two polarized beams by a birefringent element, which passes through a polarization rotation device that comprises waveplates, walk-off elements, and electrically controllable polarization rotators, and recombine into an output fiber, achieving polarization independent operation.
    Type: Grant
    Filed: October 5, 2001
    Date of Patent: June 29, 2004
    Assignee: Agiltron, Inc.
    Inventors: Guanghai Jin, Jing Zhao
  • Publication number: 20030123827
    Abstract: The systems and methods of the present invention includes the manufacturing of integrated photonic circuit devices using deposition processes such as, for example, supercritical fluid deposition (SFD). The present invention further includes the coupling of photonic crystal structures and planar waveguides to provide high performance, low-cost and scalable photonic components.
    Type: Application
    Filed: December 28, 2001
    Publication date: July 3, 2003
    Applicant: Xtalight, Inc.
    Inventors: Jack P. Salerno, Guanghai Jin, David J. Brady
  • Patent number: 6577430
    Abstract: The present invention provides improved optical switches in which no mechanical movement is required to direct optical pathways between plural fiber ports and light transmission is bi-directional. Advantageously, the inventive switches permit bi-directional light transmission. The inventive switches also incorporate light bending devices to allow two fibers to be coupled to the light beams using a single lens for compactness. In the inventive switch, an optical signal is spatially split into two polarized beams by a birefringent element, which passes through a polarization rotation device that comprises waveplates, walk-off elements, and an electrically controllable polarization rotator, and recombine into an output fiber, achieving polarization independent operation. The switches of the present invention rely on electro-magnetically or electro-optically switching the beam polarizations from one state to another to rapidly direct the light path.
    Type: Grant
    Filed: May 14, 2001
    Date of Patent: June 10, 2003
    Inventors: Guanghai Jin, Lei Zhang, Jing Zhao
  • Publication number: 20030068112
    Abstract: The present invention provides improved optical switches in which no mechanical movement is required to direct optical pathways between plural fiber ports. Advantageously, the inventive switches incorporate two-stage polarization rotation to improve isolation depth, as well as temperature and wavelength independence. The inventive switches also incorporate light bending devices to allow two fibers to be coupled to the light beams using a single lens achieving small beam separation for compactness. In the inventive switch, an optical signal is spatially split into two polarized beams by a birefringent element, which passes through a polarization rotation device that comprises waveplates, walk-off elements, and electrically controllable polarization rotators, and recombine into an output fiber, achieving polarization independent operation.
    Type: Application
    Filed: October 5, 2001
    Publication date: April 10, 2003
    Inventors: Guanghai Jin, Jing Zhao
  • Patent number: 6522456
    Abstract: An apparatus and method for filtering an optical input is disclosed. In an illustrative embodiment, an optical input is split into polarization components along separate paths. The polarization components are then fed into a first electro-optic device that includes a set of electrodes across which a voltage is applied to adjust a wavelength transmission characteristic of the device. A section of the first device positioned between the electrodes preferably has a birefringence that is adjusted depending on the voltage applied across the electrodes. The adjusted components of the optical input are thereafter combined to produce an optical output. Accordingly, the optical input can be attenuated based on the voltage applied to electrodes of the first electro-optic device.
    Type: Grant
    Filed: May 4, 2001
    Date of Patent: February 18, 2003
    Assignees: Corning Applied Technologies, Inc., Corning Incorporated
    Inventors: Qiushui Chen, Hua Jiang, Yingyin Zou, Dean Tsang, Paul Melman, Feiling Wang, Guanghai Jin, Jing Zhao
  • Publication number: 20020163707
    Abstract: An apparatus and method for filtering an optical input is disclosed. In an illustrative embodiment, an optical input is split into polarization components along separate paths. The polarization components are then fed into a first electro-optic device that includes a set of electrodes across which a voltage is applied to adjust a wavelength transmission characteristic of the device. A section of the first device positioned between the electrodes preferably has a birefringence that is adjusted depending on the voltage applied across the electrodes. The adjusted components of the optical input are thereafter combined to produce an optical output. Accordingly, the optical input can be attenuated based on the voltage applied to electrodes of the first electro-optic device.
    Type: Application
    Filed: May 4, 2001
    Publication date: November 7, 2002
    Applicant: Corning Applied Technologies, Inc.
    Inventors: Qiushui Chen, Hua Jiang, Yingyin Zou, Dean Tsang, Paul Melman, Feiling Wang, Guanghai Jin, Jing Zhao