Patents by Inventor Kim Yang Lee
Kim Yang Lee 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: 8435654Abstract: The invention relates to bit patterned recording media having a stop layer for chemical mechanical polishing. One embodiment of the present invention is a method of manufacturing a magnetic recording medium comprising the step of planarizing by chemical mechanical polishing until the stop layer is reached. The present invention also provides a magnetic recording medium having a stop layer.Type: GrantFiled: September 10, 2008Date of Patent: May 7, 2013Assignee: Seagate Technology LLCInventors: Bing Yen, Jim Hennessey, Eric Freeman, Kim Yang Lee, David S. Kuo, Mark Ostrowski
-
Publication number: 20130051206Abstract: A system and method of calibrating optical measuring equipment includes optically measuring discrete objects of a first known predictable pattern from a calibration apparatus, wherein the first known predictable pattern is a bit pattern. A recording surface optical reader is calibrated based on the optically measuring. Using the first known predictable pattern, contamination is filtered from the results of the optically measuring.Type: ApplicationFiled: August 31, 2011Publication date: February 28, 2013Applicant: SEAGATE TECHNOLOGY, LLCInventors: Hamid Ghazvini, David Kuo, Minh Huong Le, Kim Yang Lee, HongYing Wang, Nobuo Kurataka, Yautzong Hsu, Henry Hung Yang
-
Publication number: 20130004763Abstract: The embodiments disclose a method of fabricating a stack, including replacing a metal layer of a stack imprint structure with an oxide layer, patterning the oxide layer stack using chemical etch processes to transfer the pattern image and cleaning etch residue from the stack imprint structure to substantially prevent contamination of the metal layers.Type: ApplicationFiled: June 30, 2011Publication date: January 3, 2013Applicant: SEAGATE TECHNOLOGY, LLCInventors: Michael R. Feldbaum, Justin Jia-Jen Hwu, David S. Kuo, Gennady Gauzner, Kim Yang Lee, Li-Ping Wang
-
Publication number: 20120308783Abstract: The embodiments disclose a method of creating two-sided template from a single recorded master, including fabricating a first template using a single recorded master, wherein the first template has a changed duty cycle and an unchanged servo arc orientation, creating a replicate of the first template, wherein the replicate has a mirrored servo arc orientation and a changed duty cycle and fabricating a second template using the replicate to produce a predetermined mirrored servo arc orientation and a predetermined duty cycle for imprinting on a second side of a patterned stack.Type: ApplicationFiled: August 3, 2011Publication date: December 6, 2012Applicant: SEAGATE TECHNOLOGY, LLCInventors: David Kuo, Gennady Gauzner, Kim Yang Lee
-
Publication number: 20120273999Abstract: The embodiments disclose a method for patterning a stack, including embedding servo patterns within a final template and creating positions of plural cross-tracked shifted position error signal (PES) fields incrementally from the embedded servo patterns on the final template.Type: ApplicationFiled: April 29, 2011Publication date: November 1, 2012Applicant: SEAGATE TECHNOLOGY, LLCInventors: Sundeep Chauhan, Alexander Kantorov, Kim Yang Lee, David Kuo, René Johannes Marinus Van de Veerdonk, Barmeshwar Vikramaditya
-
Publication number: 20120196089Abstract: A method of self-assembling density multiplied block copolymers (BCP) structures includes applying a block copolymer (BCP) to a feature-imprinted resist layer. The BCP is thermally annealed to laterally segregate the BCP into self-assembled columns of a first polymer block surrounded by a second polymer block.Type: ApplicationFiled: January 31, 2011Publication date: August 2, 2012Applicant: SEAGATE TECHNOLOGY LLCInventors: XiaoMin Yang, Wei Hu, Zhaoning Yu, Justin Jia-Jen Hwu, Kim Yang Lee
-
Publication number: 20120164389Abstract: Imprinted apparatuses, such as Bit-Patterned Media (BPM) templates, Discrete Track Recording (DTR) templates, semiconductors, and photonic devices are disclosed. Methods of fabricating imprinted apparatuses using a combination of patterning and block copolymer (BCP) self-assembly techniques are also disclosed.Type: ApplicationFiled: December 28, 2010Publication date: June 28, 2012Inventors: XIAOMIN YANG, ZHAONING YU, KIM YANG LEE, MICHAEL FELDBAUM, YAUTZONG HSU, WEI HU, SHUAIGANG XIAO, HENRY YANG, HONGYING WANG, RENE JOHANNES MARINUS VAN DE VEERDONK, DAVID KUO
-
Publication number: 20120135159Abstract: This disclosure describes a method for nano-patterning by incorporating one or more block copolymers and one or more nano-imprinting steps in the fabrication process. The block copolymers may be comprised of organic or organic components, and may be lamellar, spherical or cylindrical. As a result, a patterned medium may be formed having one-dimensional or two-dimensional patterns with a feature pitch of 5-100 nm and/or a bit density of at least 1 Tdpsi.Type: ApplicationFiled: November 30, 2010Publication date: May 31, 2012Applicant: Seagate Technology LLCInventors: Shuaigang Xiao, Renè Johannes Marinus Van De Veerdonk, Kim Yang Lee, David Kuo, XiaoMin Yang, Wei Hu
-
Patent number: 8187480Abstract: Methods comprising providing a pre-patterned substrate having an array of thick walls, depositing a conforming layer on the pre-patterned substrate, etching the conforming layer from the top of the thick walls and the space between the walls, and etching the thick walls while leaving thin walls of conforming layer.Type: GrantFiled: November 13, 2008Date of Patent: May 29, 2012Assignee: Seagate Technology, LLCInventors: Kim Yang Lee, David S. Kuo, Dorothea Buechel, Kalman Pelhos
-
Patent number: 8154813Abstract: A method of making a disc for a computer disc drive and a disc made in accordance with the same. The disc includes a deposited magnetic layer of a thin film medium over a disc-shaped substrate. A master pattern having a plurality of tracks is recorded on the disc. Each track on the disc includes a plurality of magnetic islands, each having a size and magnetic properties. The size and/or magnetic properties of one or more of the magnetic islands of each track are modulated such that each track has a modulation frequency, so as to imprint a magnetic topology on the disc. The modulation frequency of each track is either a fundamental frequency or an overtone of the fundamental frequency.Type: GrantFiled: September 2, 2008Date of Patent: April 10, 2012Assignee: Seagate Technology, LLCInventors: Dieter Klaus Weller, Hans Jurgen Richter, David S. Kuo, Kim Yang Lee
-
Publication number: 20120025426Abstract: A method and apparatus of thermal imprint lithography includes moving an imprinter against a surface to be imprinted, supplying energy to a layer of heating material, and forming features in the surface to be imprinted. The imprinter comprises a main body and the layer of heating material under the main body. In an embodiment the layer of heating material is electrically heated. In alternate embodiments, the layer of heating material is optically heated.Type: ApplicationFiled: July 30, 2010Publication date: February 2, 2012Applicant: SEAGATE TECHNOLOGY LLCInventors: David Kuo, Justin Hwu, Gennady Gauzner, Kim Yang Lee, Dieter Weller
-
Publication number: 20110132867Abstract: A method and apparatus of imprint lithography wherein the method includes depositing a material on a patterned surface of a conductive substrate, and pressing a transparent substrate and the conductive substrate together, wherein the pressing causes the material to conform to the patterned surface. Energy is applied to the material to form patterned material from the material. The transparent substrate and the conductive substrate are separated, wherein the patterned material adheres to the transparent substrate.Type: ApplicationFiled: October 29, 2010Publication date: June 9, 2011Applicant: SEAGATE TECHNOLOGY LLCInventors: Henry Hung Yang, Kim Yang Lee, Yautzong Hsu, Shuaigang Xiao, Xiaomin Yang, HongYing Wang, Zhaoning Yu
-
Publication number: 20110128647Abstract: Processes include aligning a disc with a template at a location so that the pattern from the template is transferred to the disc in a relative orientation. The relative orientation provides that when the disc with the transferred pattern is finally assembled into a hard disc drive, an inner diameter of the spindle hole of the disc may be abutted against an outer diameter of the disc drive spindle, and the data-containing patterns on the discs will be aligned concentrically with a center of the disc drive spindle. While the data-containing patterns are aligned concentrically with the disc drive spindle, the substrate itself is allowed to be non-concentric.Type: ApplicationFiled: December 2, 2009Publication date: June 2, 2011Applicant: SEAGATE TECHNOLOGY LLCInventors: Gennady Gauzner, David S. Kuo, Justin Jia-Jen Hwu, Li-Ping Wang, Zhaoning Yu, Kim Yang Lee
-
Publication number: 20110038082Abstract: A magnetic device having a magnetic feature, the magnetic feature including magnetic portions, a stop layer portion on each magnetic portion, and a region of non-magnetic material adjacent to the magnetic portions and the stop layer portions, where the stop layer portions define planar upper boundaries for the magnetic portions and an endpoint in planarization of the magnetic feature.Type: ApplicationFiled: August 12, 2009Publication date: February 17, 2011Applicant: Seagate Technology LLCInventors: Zhaohui Fan, David S. Kuo, Kim Yang Lee
-
Publication number: 20110027407Abstract: An imprint template is provided with a shallower field bordering the patterned region. The shallower field can be formed with additional lithography/etch steps after (or before) the formation of the features in the patterned region. The template is used to establish a thin film pattern with a field thickness that is shallower than the pattern. A shallower field bordering the patterned region alleviates sidewall re-deposition during ion mill. In a planarization/etch-back process, a thinner field helps to achieve a flat top surface by compensating for the thickness variation caused by different filling ratios. Fabrication of the recessed field template comprises a multi-step patterning process. The initial patterns are formed using a convention fabrication process.Type: ApplicationFiled: July 28, 2009Publication date: February 3, 2011Applicant: Seagate Technology LLCInventors: Kim Yang Lee, David S. Kuo, Zhaoning Yu
-
Publication number: 20100276390Abstract: A method of producing bit-patterned media master is provided whereby down-track and cross-track deflection plates are used to position an electronic beam at two (or more) adjacent tracks during the same revolution. Adjacent tracks of a bit-patterned media can be mastered simultaneously in the present invention by keeping the electronic beam ON during the entire time that the master is being created and the deflection plates are used to quickly ping-pong the electronic beam between the two (or more) adjacent tracks.Type: ApplicationFiled: May 1, 2009Publication date: November 4, 2010Applicant: Seagate Technology LLCInventors: Sundeep CHAUHAN, David Kuo, Kim Yang Lee
-
Publication number: 20100119778Abstract: Methods comprising providing a pre-patterned substrate having an array of thick walls, depositing a conforming layer on the pre-patterned substrate, etching the conforming layer from the top of the thick walls and the space between the walls, and etching the thick walls while leaving thin walls of conforming layer.Type: ApplicationFiled: November 13, 2008Publication date: May 13, 2010Applicant: Seagate Technology LLCInventors: Kim Yang Lee, David S. Kuo, Dorothea Buechel, Kalman Pelhos
-
Publication number: 20100062282Abstract: The invention relates to bit patterned recording media having a stop layer for chemical mechanical polishing. One embodiment of the present invention is a method of manufacturing a magnetic recording medium comprising the step of planarizing by chemical mechanical polishing until the stop layer is reached. The present invention also provides a magnetic recording medium having a stop layer.Type: ApplicationFiled: September 10, 2008Publication date: March 11, 2010Applicant: SEAGATE TECHNOLOGY LLCInventors: Bing K. Yen, Jim Hennessey, Eric Freeman, Kim Yang Lee, David S. Kuo, Mark Ostrowski
-
Publication number: 20100053809Abstract: A method of making a disc for a computer disc drive and a disc made in accordance with the same. The disc includes a deposited magnetic layer of a thin film medium over a disc-shaped substrate. A master pattern having a plurality of tracks is recorded on the disc. Each track on the disc includes a plurality of magnetic islands, each having a size and magnetic properties. The size and/or magnetic properties of one or more of the magnetic islands of each track are modulated such that each track has a modulation frequency, so as to imprint a magnetic topology on the disc. The modulation frequency of each track is either a fundamental frequency or an overtone of the fundamental frequency.Type: ApplicationFiled: September 2, 2008Publication date: March 4, 2010Applicant: Seagate Technology LLCInventors: Dieter Klaus Weller, Hans Jurgen Richter, David S. Kuo, Kim Yang Lee
-
Patent number: 7395595Abstract: A method for forming a P3 layer with NiFe and alumina mask using resist shrink process for use in perpendicular magnetic write heads. The method includes forming a laminated layer, forming an alumina layer on top of the laminated layer, depositing a conductive layer onto the laminated layer, forming a plating frame on a gap layer. The plating frame has a trench defined by plating track, the alumina, laminated and conductive layers each including an area below the trench. The method further includes shrinking the trench, plating NiFe into a portion of the shrunk trench, stripping the plating frame, removing the conductive layer except the conductive layer formed below the trench, removing the alumina layer except the alumina layer formed below the trench, removing the laminated layer except the laminated layer formed below the trench and patterning the laminated layer formed below the trench.Type: GrantFiled: April 19, 2005Date of Patent: July 8, 2008Assignee: Hitachi Global Storage Technologies Netherlands B.V.Inventors: Kim Yang Lee, Jyh-Shuey Lo, Yi Zheng