Patents Assigned to SAE Magnetics (H.K.) Ltd.
  • Patent number: 10397457
    Abstract: A camera module includes a lens assembly, a voice coil motor assembly, an image sensor assembly and a flash assembly. The lens assembly is installed in the voice coil motor assembly along an optical axis direction, the image sensor assembly is located below the lens assembly, the flash assembly is mounted above the voice coil motor assembly and includes at least one light source located around a lens of the lens assembly, and the light source adapted for providing a flash for the lens. The flash assembly can provide uniform and even flashing light for the lens to improve imaging quality, and provide compact structure to meet the development of the electronic products miniaturization.
    Type: Grant
    Filed: July 27, 2017
    Date of Patent: August 27, 2019
    Assignee: SAE MAGNETICS (H.K.) LTD.
    Inventors: Yiu Sing Ho, Wen Ju Yang, Jing Shu Shi
  • Patent number: 10389923
    Abstract: A camera module includes a lens assembly, a voice coil motor assembly for receiving and driving the lens assembly, and an image sensor assembly located below the voice coil motor assembly. The voice coil motor assembly comprises a bottom unit that is hollow and a color filter supported by the bottom unit, the color filter, the lens assembly and the image sensor assembly are coaxial, the bottom unit has an upper portion and a lower portion that are integrated together, the upper portion is configured around the lens assembly, and the bottom unit is configured below the lens assembly and supports the color filter. The camera module has simple structure and convenient assembly, can reduce total assembly tolerances of the camera module, achieve an accurate optical axis alignment between the lens and the image sensor, and reduce manufacturing cost to benefit the popularization in industries.
    Type: Grant
    Filed: August 1, 2017
    Date of Patent: August 20, 2019
    Assignee: SAE MAGNETICS (H.K.) LTD.
    Inventors: Yiu Sing Ho, Fen Yan Li, Wen Ju Yang
  • Patent number: 10311903
    Abstract: A method of testing dynamic performances for a slider body of a thermally-assisted magnetic head includes: providing a slider body which is disconnected with a light source unit; removably mounting the slider body to a test head suspension assembly; keeping to provide a flat top beam to the slider body, the flat top beam being aligned with the optical waveguide, and a projection of an incident end of the optical waveguide being located within a light spot of the flat top beam; and testing the dynamic performance of the slider body. It can save the material cost and labor cost, and eliminate a precise optical alignment between an input light and an optical waveguide in the slider body to improve testing efficiency.
    Type: Grant
    Filed: July 14, 2017
    Date of Patent: June 4, 2019
    Assignee: SAE MAGNETICS (H.K.) LTD.
    Inventors: Seiichi Takayama, Takashi Honda, Ryuji Fujii, Ryo Hosoi, Kaichiu Cheung, Tsutomu Sasaki, Jingtao Lu, Fanglong Nie
  • Patent number: 10276196
    Abstract: A thin-film piezoelectric material substrate includes an insulator on Si substrate and a thin-film laminated part. The insulator on Si substrate has a substrate for deposition made of silicon and an insulating layer formed on a surface of the substrate for deposition. The thin-film laminated part is formed on a top surface of the insulating layer. The thin-film laminated part has a YZ seed layer including yttrium and zirconium, and formed on the top surface; a lower electrode film laminated on the YZ seed layer; a piezoelectric material film made of lead zirconate titanate, shown by general formula Pb(ZrxTi(1-x))O3, and formed on the lower electrode film; and an upper electrode film laminated on the piezoelectric material film.
    Type: Grant
    Filed: December 3, 2015
    Date of Patent: April 30, 2019
    Assignee: SAE MAGNETICS (H.K.) LTD.
    Inventors: Wei Xiong, Atsushi Iijima
  • Patent number: 10205371
    Abstract: A voice coil motor includes a housing having a cavity; a movable assembly received in the cavity; a fixing assembly configured outside of the movable assembly; and a first spring plate and a second spring plate configured at an upper surface and a lower surface of the movable assembly respectively. The fixing assembly comprises at least two magnetic elements connected with the first spring plate and a spacer member configured on the second spring plate to connect the second spring plate to the magnetic elements or the housing. The voice coil motor is served as an actuator of electronic products such as digital cameras, mobile phones, and digital cameras, which has thin thickness, good performance and strong applicability.
    Type: Grant
    Filed: March 28, 2016
    Date of Patent: February 12, 2019
    Assignee: SAE MAGNETICS (H.K.) LTD.
    Inventors: Sidney Chou, Yiu Sing Ho, Kam Fung Yip, Wen Ju Yang, Hai Yang Wu, Shou Sheng Gao, Yong Bing Hu, Guo Hong Lu
  • Patent number: 10181557
    Abstract: A manufacturing method of an epitaxial thin film piezoelectric element includes: providing a substrate; forming a bottom electrode layer on the substrate by epitaxial growth process; forming a first piezoelectric layer that has c-axis orientation on the bottom electrode layer by epitaxial growth process; forming a second piezoelectric layer that has c-axis orientation and different phase structure from the first piezoelectric layer on the first piezoelectric layer by epitaxial growth process; and forming a top electrode layer on the second piezoelectric layer. The thin film piezoelectric element has good thermal stability, low temperature coefficient and high piezoelectric constant.
    Type: Grant
    Filed: May 17, 2016
    Date of Patent: January 15, 2019
    Assignee: SAE MAGNETICS (H.K.) LTD.
    Inventors: Wei Xiong, Atsushi Iijima, Takao Noguchi
  • Patent number: 10152992
    Abstract: A light source unit for thermally-assisted magnetic head includes a support member and a light source attached on the support member via a solder, and the light source unit further includes a positioning structure formed between the support member and the light source for positioning the light source and the solder. The light source unit can maintain stable height control of the light source, prevent solder over flow and prevent the light source from shifting and moving during the bonding process.
    Type: Grant
    Filed: February 9, 2018
    Date of Patent: December 11, 2018
    Assignee: SAE MAGNETICS (H.K.) LTD.
    Inventors: Ryo Hosoi, Seiichi Takayama, Takashi Honda
  • Publication number: 20180282896
    Abstract: There is provided a manufacturing method of a ferroelectric crystal film in which an orientation of a seed crystal film is transferred preferably and a film deposition rate is suitable for volume production. A seed crystal film is formed on a substrate in epitaxial growth by a sputtering method, an amorphous film including ferroelectric material is formed over the seed crystal film by a spin-coat coating method, the seed crystal film and the amorphous film are heated in an oxygen atmosphere for oxidation and crystallization of the amorphous film, and thereby a ferroelectric coated-and-sintered crystal film is formed.
    Type: Application
    Filed: June 1, 2018
    Publication date: October 4, 2018
    Applicants: YOUTEC CO., LTD., SAE Magnetics (H.K.) Ltd.
    Inventors: Takeshi KIJIMA, Yuuji HONDA, Daisuke IITSUKA, Kenjirou HATA
  • Patent number: 10061084
    Abstract: A coupling structure of optical components has a first optical component, a second optical component and a coupling solder layer. The first optical component has a lensed fiber, a first holder holding the lensed fiber and a first metal layer formed on a first connecting end face of the first holder. The second optical component has a waveguide, a second holder holding the waveguide and a second metal layer formed on a second connecting end face of the second holder. The coupling solder layer is in direct contact with both of the first metal layer and the second metal layer, and formed with solder.
    Type: Grant
    Filed: February 28, 2017
    Date of Patent: August 28, 2018
    Assignee: SAE MAGNETICS (H.K.) LTD.
    Inventors: Seiichi Takayama, Kiyohiko Abe, Ryuji Fujii, Takashi Honda, Shi Xiong Chen, Osamu Harakawa
  • Patent number: 10040140
    Abstract: A nozzle for connecting or disconnecting solder joints between head bonding pads of in a hard disk drive, includes a nozzle body including a tip, the tip disposed at a distal end of the nozzle body and configured to deliver or reflow a solder ball in proximity to head bonding pads; and a central duct disposed along a central axis of the nozzle body and configured to convey the solder ball to or from the tip. The tip includes a front face facing to a trailing edge of a slider, a back face facing to a top surface of a suspension supporting the slider, and two side faces adjacent to the front face and back face respectively, and at least one interference-free structure is provided at two adjacent faces of the tip at least, thereby no interference happens between the tip and elements adjacent to the slider during the operation.
    Type: Grant
    Filed: December 29, 2014
    Date of Patent: August 7, 2018
    Assignee: SAE MAGNETICS (H.K.) LTD.
    Inventors: Chiwai Lo, Shenkuang Chou, Yiusing Ho, Kayip Wong, Xiangyuan Tan, Junqun Zhang
  • Patent number: 10042139
    Abstract: A camera lens module includes a case and a bottom coupled with the case to form an accommodating space, having an upper spring, a lens assembly and a lower spring accommodated in the accommodating space. The lens assembly includes a lens barrel main body and a group of lenses provided in the lens barrel main body. An upper end of the lens barrel main body is suspended on the upper spring, and a lower end of the lens barrel main body is suspended on the lower spring. The upper spring is connected with the case, and the lower spring is connected with the bottom. In the camera lens module, the lens assembly is directly suspended on upper and lower springs. This eliminates the camera lens mount of existing camera lens module as well as the connecting screw structure between the camera lens mount and the lens barrel.
    Type: Grant
    Filed: October 17, 2016
    Date of Patent: August 7, 2018
    Assignee: SAE Magnetics (H.K.) Ltd.
    Inventors: Yiu Sing Ho, Yong Bing Hu
  • Patent number: 10017874
    Abstract: There is provided a manufacturing method of a ferroelectric crystal film in which an orientation of a seed crystal film is transferred preferably and a film deposition rate is suitable for volume production. A seed crystal film is formed on a substrate in epitaxial growth by a sputtering method, an amorphous film including ferroelectric material is formed over the seed crystal film by a spin-coat coating method, the seed crystal film and the amorphous film are heated in an oxygen atmosphere for oxidation and crystallization of the amorphous film, and thereby a ferroelectric coated-and-sintered crystal film is formed.
    Type: Grant
    Filed: November 30, 2012
    Date of Patent: July 10, 2018
    Assignees: YOUTEC CO., LTD., SAE MAGNETICS (H.K.) LTD.
    Inventors: Takeshi Kijima, Yuuji Honda, Daisuke Iitsuka, Kenjirou Hata
  • Patent number: 10008826
    Abstract: Certain examples described herein relate to a surface-emitting semiconductor-laser which includes an oxide window, a light emitting cavity, and at least one phase matching window. The oxide window, the light emitting cavity, and the at least one phase matching layer are arranged so that a predetermined phase relationship is satisfied. The phase relationship facilitates high performance and stable multimode operations of the surface-emitting semiconductor laser designed to emit between 850-1060 nm wavelength for applications such as long distance optical communications in high performance computing and data servers.
    Type: Grant
    Filed: May 1, 2015
    Date of Patent: June 26, 2018
    Assignee: SAE MAGNETICS (H.K.) LTD.
    Inventor: Babu Dayal Padullaparthi
  • Patent number: 9978408
    Abstract: A thin-film piezoelectric material element includes a piezoelectric part having a laminated structure which a lower electrode film, a piezoelectric material film and an upper electrode film are laminated sequentially, and electrode pads connected with the piezoelectric part. The thin-film piezoelectric material element has solder regulating parts formed on pad surfaces being surfaces of the electrode pads. The solder regulating parts have peripheral edge parts and crossing edge parts connected with the two outer edge parts, and formed to cross the pad surfaces. The crossing edge parts are formed in a bow like curve-shape having curved parts, being gradually distant from the shortest line as they are distant more from the outer edge parts.
    Type: Grant
    Filed: November 15, 2016
    Date of Patent: May 22, 2018
    Assignees: SAE MAGNETICS (H.K.) LTD., TOSHIBA ELECTRONIC DEVICES & STORAGE CORPORATION
    Inventors: Naoto Matono, Kazushi Nishiyama, Hirofumi Nesori, Takuma Kido
  • Patent number: 9980395
    Abstract: A manufacturing method of laser diode unit of the present invention includes steps: placing a laser diode on top of a solder member formed on a mounting surface of a submount, applying a pressing load to the laser diode and pressing the laser diode against the solder member, next, melting the solder member by heating the solder member at a temperature higher than a melting point of the solder member while the pressing load is being applied, and thereafter, bonding the laser diode to the submount by cooling and solidifying the solder member, thereafter, removing the pressing load, and softening the solidified solder member by heating the solder member at a temperature lower than the melting point of the solder member after the pressing load has been removed, and thereafter cooling and re-solidifying the solder member.
    Type: Grant
    Filed: September 22, 2014
    Date of Patent: May 22, 2018
    Assignees: TDK Corporation, ROHM CO., LTD., SAE Magnetics (H.K.) Ltd.
    Inventors: Koji Shimazawa, Osamu Shindo, Yoshihiro Tsuchiya, Yasuhiro Ito, Kenji Sakai
  • Patent number: 9936571
    Abstract: A PCB includes a PCB body at least including a first metal layer, a second metal layer, and a first ground layer sandwiched therebetween; and a pair of transmission lines including a first transmission line conductor and a second transmission line conductor. The first transmission line conductor is located in the first metal layer which has two straight line sections at its two ends and a curved line section at its middle, the second transmission line conductor has two straight line sections at its two ends which are located in the first metal layer and a cross-via structure at the middle which has a buried trace buried in the second metal layer, and the curved line section and the buried trace are isolated by the first ground layer. Skew effect of the differential transmission circuit is reduced, thereby improving the signal transmission quality and improve signal transmission speed.
    Type: Grant
    Filed: September 2, 2015
    Date of Patent: April 3, 2018
    Assignee: SAE MAGNETICS (H.K.) LTD.
    Inventor: Fuk Ming Lam
  • Patent number: 9933589
    Abstract: A lens assembly includes a lens holder and a lens barrel that are coaxial and integrated in a unity, a cavity is defined therein to receive at least one lens, at least three guiding legs are extended from a bottom of the lens holder, and the guiding legs define a plane that is parallel to an installation plane of the lens. It can achieve an accurate optical axis alignment between the lens and the image sensor, reduce total assembly tolerances of the camera module thereby improving imaging quality, and reduce manufacturing cost to benefit the popularization in industries.
    Type: Grant
    Filed: August 16, 2016
    Date of Patent: April 3, 2018
    Assignee: SAE MAGNETICS (H.K.) LTD.
    Inventors: Chi Wai Lo, Sidney Shen Kuang Chou, Yiu Sing Ho, Fen Yan Li, Xin Tao Lang, Gui Ming Wei
  • Patent number: 9927586
    Abstract: A two-part optical coupling subassembly includes a main lens formed with a cavity, the main lens including two surfaces formed in the cavity and oppositely inclined at an off-vertical angle from a central vertical plane of the cavity such that the two surfaces are symmetric with respect to the central vertical plane; a beam router embedded in the cavity, the beam router including first and second beam router surfaces lying on the two surfaces of the main lens respectively, and a partially reflective coating on at least one of the beam router surfaces; and a transparent adhesive provided between the two lens surfaces and the first and second beam router surfaces.
    Type: Grant
    Filed: March 20, 2017
    Date of Patent: March 27, 2018
    Assignee: SAE Magnetics (H.K.) Ltd.
    Inventor: Wing Keung Mark Mak
  • Patent number: 9896584
    Abstract: A method of making an article coated with DLC, includes providing a substrate; depositing a transition layer on the substrate by means of magnetron sputter deposition (MSD); depositing a DLC layer without hydrogen (H) on the transition layer by means of filtered cathodic vacuum arc (FCVA); and doping a fluorine-doping (F-doping) layer on the DLC layer. The article has good film bonding force, high hardness, good wear resistance, good hydrophobicity and oleophobicity and high light transmittance, and the DLC layer has no H included.
    Type: Grant
    Filed: May 26, 2015
    Date of Patent: February 20, 2018
    Assignee: SAE MAGNETICS (H.K.) LTD.
    Inventors: Qing ping Liu, Zhi hong Hao
  • Patent number: 9899046
    Abstract: A method of testing anti-high temperature performance of a magnetic head comprises applying a plurality of second magnetic fields with different intensities in a second direction to the magnetic head, and measuring a second output parameter curve, and judging whether a variation that is beyond an allowable value is presented on the second output parameter curve, therein the second direction passes through the ABS and at an angle whose absolute value is an acute angle to the ABS. The present invention can screen out defective magnetic heads that possess poor anti-high temperature performance without heating the magnetic head.
    Type: Grant
    Filed: April 29, 2011
    Date of Patent: February 20, 2018
    Assignee: SAE Magnetics (H.K.) Ltd.
    Inventors: Cheukman Lui, Chiuming Lueng, Hokei Lam, Mankit Lee, Kwokkam Leung, Cheukwing Leung, Juren Ding, Rongkwang Ni