Patents by Inventor Hwan Chul Lee

Hwan Chul 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).

  • Publication number: 20100237498
    Abstract: A semiconductor device package and a method thereof are able to reliably package a semiconductor device on a substrate without using flux. The semiconductor device package includes a semiconductor device and a substrate reciprocally disposed with respect to the semiconductor device, wherein the substrate includes a side reciprocal to the semiconductor device on which there are formed a plurality of prominences surrounding an accommodation region where the semiconductor device is to be disposed. The method of packaging a semiconductor device includes preparing the semiconductor device, preparing a substrate, forming a plurality of prominences to surround an accommodation region on the substrate where the semiconductor device is to be disposed, dropping the semiconductor device within the accommodation region, and packaging the semiconductor device on the substrate.
    Type: Application
    Filed: October 28, 2008
    Publication date: September 23, 2010
    Applicant: OPTOPAC CO., LTD.
    Inventors: Deok Hoon Kim, Young Sang Cho, Hwan Chul Lee
  • Patent number: 7720374
    Abstract: The present invention relates to a camera module, which comprises a packaged image sensor, an IR filter, a lens and a holder for holding these components and has a reduced overall size and height. A camera module according to the present invention comprises an image sensor package having a translucent substrate formed thereon; and a holder having a lower end attached to the translucent substrate of the image sensor package. At this time, the holder comprises a horizontal portion formed with a through-hole and a connecting portion extending downwardly from an edge of the horizontal portion, and an end surface of a lower end of the connecting portion is formed with an inner stepped portion so as to be attached to a peripheral portion of a top surface and a lateral surface of the translucent substrate.
    Type: Grant
    Filed: July 14, 2006
    Date of Patent: May 18, 2010
    Assignee: Optopac Co, Ltd.
    Inventors: Young-Seok Kim, Hyeok-Hwan Kwon, Hyun-Kyu Choi, Hwan-Chul Lee
  • Patent number: 7714310
    Abstract: The present invention relates to an apparatus, unit and method for testing image sensor packages, which can automatically test whether the image sensor packages are defective before they are assembled into camera modules. An apparatus for testing image sensor packages according to the present invention comprises a seating unit on which image sensor packages are seated for tests; a testing section having a lens and a light source above the image sensor packages to perform an open and short test and an image test for the image sensor packages; and a controlling and processing unit having a tester module for performing the open and short test and the image test for the image sensor packages.
    Type: Grant
    Filed: May 27, 2008
    Date of Patent: May 11, 2010
    Assignee: Optopac Co., Ltd.
    Inventors: Young-Seok Kim, Hwan-Chul Lee, Jae-Cheol Ju
  • Patent number: 7484103
    Abstract: The present invention relates to the information protection of digital content transferred by streaming and download service through wire or wireless Internet network. The information protection system in this invention suggests a drastic prevention method of copyrights infringement such as illegal copy and unauthorized distribution of digital content, by using of the encryption, decryption, distribution, and authentication technologies. This invention suggests the control technology of general viewer program, not the specific viewer program for information protection, using a network filter driver for streaming and file system filter driver for download service. The main function of network and file system filter driver is the filtering operation such as a hooking, changing, decrypting, and restoring of message and data packet, and transferring to the viewer program.
    Type: Grant
    Filed: January 10, 2003
    Date of Patent: January 27, 2009
    Inventors: Je-Hak Woo, Hwan-Chul Lee, Sang-Young Cho, Seong-Ho Jeong, Young-Soo Ha, Seog-Kyoon Shin, Seong-Il Kim
  • Patent number: 7427768
    Abstract: The present invention relates to an apparatus, unit and method for testing image sensor packages, which can automatically test whether the image sensor packages are defective before they are assembled into camera modules. An apparatus for testing image sensor packages according to the present invention comprises a seating unit on which image sensor packages are seated for tests; a testing section having a lens and a light source above the image sensor packages to perform an open and short test and an image test for the image sensor packages; and a controlling and processing unit having a tester module for performing the open and short test and the image test for the image sensor packages.
    Type: Grant
    Filed: July 14, 2006
    Date of Patent: September 23, 2008
    Assignee: Optopac Co., Ltd.
    Inventors: Young-Seok Kim, Hwan-Chul Lee, Jae-Cheol Ju
  • Publication number: 20080224721
    Abstract: The present invention relates to an apparatus, unit and method for testing image sensor packages, which can automatically test whether the image sensor packages are defective before they are assembled into camera modules. An apparatus for testing image sensor packages according to the present invention comprises a seating unit on which image sensor packages are seated for tests; a testing section having a lens and a light source above the image sensor packages to perform an open and short test and an image test for the image sensor packages; and a controlling and processing unit having a tester module for performing the open and short test and the image test for the image sensor packages.
    Type: Application
    Filed: May 27, 2008
    Publication date: September 18, 2008
    Applicant: Optopac Co., Ltd.
    Inventors: Young-Seok KIM, Hwan-Chul LEE, Jae-Cheol JU
  • Publication number: 20080157251
    Abstract: Provided are an image sensor package used as a semiconductor device package and a method of packaging the image sensor package. The package and method prevent defects in sealing rings and connections for electrical connection during manufacturing process, by designating the melting point of solder balls used for the image sensor package different from the melting point of solder used in other bonding applications. The semiconductor device package includes a semiconductor device, a substrate assembly, a solder sealing ring, and a plurality of solder balls. The substrate assembly is disposed facing the semiconductor device. The solder sealing ring tightly seals the semiconductor device and the substrate assembly. The solder balls are formed in an outer periphery of the solder sealing ring of the substrate assembly. The solder sealing ring has a higher melting point than the solder balls.
    Type: Application
    Filed: November 30, 2007
    Publication date: July 3, 2008
    Applicant: OPTOPAC CO., LTD.
    Inventor: Hwan-Chul Lee
  • Patent number: 7384818
    Abstract: A semiconductor device package and method for its fabrication are provided. The semiconductor device package generally includes at least one semiconductor die and a substrate coupled to the semiconductor die. The semiconductor die is provided with a front side defining a sealing area, and a first solder sealing ring pad formed on that front side. The substrate is provided with a front surface opposing the front side of the semiconductor die on which a second solder sealing ring pad is formed. A solder sealing ring structure is sandwiched between the first and second solder sealing pads of the substrate and semiconductor die, such that it extends peripherally about a substantial portion of the sealing area to substantially enclose thereat a cavity between the semiconductor die and the substrate. The solder sealing ring structure includes at least one venting portion defining against at least one of the substrate and semiconductor die an air vent in open communication with the cavity.
    Type: Grant
    Filed: October 24, 2006
    Date of Patent: June 10, 2008
    Assignee: Optopac, Inc.
    Inventors: Deok-Hoon Kim, Hwan-Chul Lee
  • Publication number: 20070241273
    Abstract: The present invention relates to a camera module, which comprises a packaged image sensor, an IR filter, a lens and a holder for holding these components and has a reduced overall size and height. A camera module according to the present invention comprises an image sensor package having a translucent substrate formed thereon; and a holder having a lower end attached to the translucent substrate of the image sensor package. At this time, the holder comprises a horizontal portion formed with a through-hole and a connecting portion extending downwardly from an edge of the horizontal portion, and an end surface of a lower end of the connecting portion is formed with an inner stepped portion so as to be attached to a peripheral portion of a top surface and a lateral surface of the translucent substrate.
    Type: Application
    Filed: July 14, 2006
    Publication date: October 18, 2007
    Applicant: OPTOPAC CO., LTD
    Inventors: Young-Seok KIM, Hyeok-Hwan KWON, Hyun-Kyu CHOI, Hwan-Chul LEE
  • Publication number: 20070131881
    Abstract: The present invention relates to an apparatus, unit and method for testing image sensor packages, which can automatically test whether the image sensor packages are defective before they are assembled into camera modules. An apparatus for testing image sensor packages according to the present invention comprises a seating unit on which image sensor packages are seated for tests; a testing section having a lens and a light source above the image sensor packages to perform an open and short test and an image test for the image sensor packages; and a controlling and processing unit having a tester module for performing the open and short test and the image test for the image sensor packages.
    Type: Application
    Filed: July 14, 2006
    Publication date: June 14, 2007
    Inventors: Young-Seok KIM, Hwan-Chul LEE, Jae-Cheol JU
  • Publication number: 20070042530
    Abstract: A semiconductor device package and method for its fabrication are provided. The semiconductor device package generally includes at least one semiconductor die and a substrate coupled to the semiconductor die. The semiconductor die is provided with a front side defining a sealing area, and a first solder sealing ring pad formed on that front side. The substrate is provided with a front surface opposing the front side of the semiconductor die on which a second solder sealing ring pad is formed. A solder sealing ring structure is sandwiched between the first and second solder sealing pads of the substrate and semiconductor die, such that it extends peripherally about a substantial portion of the sealing area to substantially enclose thereat a cavity between the semiconductor die and the substrate. The solder sealing ring structure includes at least one venting portion defining against at least one of the substrate and semiconductor die an air vent in open communication with the cavity.
    Type: Application
    Filed: October 24, 2006
    Publication date: February 22, 2007
    Inventors: Deok-Hoon Kim, Hwan-Chul Lee
  • Patent number: 7141869
    Abstract: A semiconductor device package and method for its fabrication are provided. The semiconductor device package generally includes at least one semiconductor die and a substrate coupled to the semiconductor die. The semiconductor die is provided with a front side defining a sealing area, and a first solder sealing ring pad formed on that front side. The substrate is provided with a front surface opposing the front side of the semiconductor die on which a second solder sealing ring pad is formed. A solder sealing ring structure is sandwiched between the first and second solder sealing pads of the substrate and semiconductor die, such that it extends peripherally about a substantial portion of the sealing area to substantially enclose thereat a cavity between the semiconductor die and the substrate. The solder sealing ring structure includes at least one venting portion defining against at least one of the substrate and semiconductor die an air vent in open communication with the cavity.
    Type: Grant
    Filed: February 9, 2005
    Date of Patent: November 28, 2006
    Assignee: Optopac, Inc.
    Inventors: Deok-Hoon Kim, Hwan-Chul Lee
  • Patent number: 7128066
    Abstract: Disclosed is a diamond tool having a metal plate inserted therein. Between abrasive layers containing diamond particles is inserted a ferrous or non-ferrous metal plate having a wear resistance lower than that of the abrasive layers such that a concave groove is spontaneously formed during a cutting process, thereby reducing the contact load with a workpiece to thereby avoid vibration (wobbling) of a shank, and providing a discharge path for smoothly removing cutting chips and the cooling water. In addition, the content of abrasives and the wear resistance of bonding material are uniformly constituted so that the shrinkage rate does not need to be considered during sintering and the manufacturing process can be simplified, thereby reducing the manufacturing cost and improving the productivity therefor. Furthermore, the area of the metal plate can be controlled, thereby enabling an easy design conforming to the working conditions with a workpiece.
    Type: Grant
    Filed: April 28, 2005
    Date of Patent: October 31, 2006
    Assignee: Shihan Diamond Industrial Co., Ltd.
    Inventors: Hwan Chul Lee, Seo Pong Pyun, Sang Do Lee, Byung Lyul Jin, Sang Jin Lee, Tae Ung Um, Yong Seob Shim, Shin Kyung Kim
  • Publication number: 20060097335
    Abstract: A semiconductor device package and method for its fabrication are provided. The semiconductor device package generally includes at least one semiconductor die and a substrate coupled to the semiconductor die. The semiconductor die is provided with a front side defining a sealing area, and a first solder sealing ring pad formed on that front side. The substrate is provided with a front surface opposing the front side of the semiconductor die on which a second solder sealing ring pad is formed. A solder sealing ring structure is sandwiched between the first and second solder sealing pads of the substrate and semiconductor die, such that it extends peripherally about a substantial portion of the sealing area to substantially enclose thereat a cavity between the semiconductor die and the substrate. The solder sealing ring structure includes at least one venting portion defining against at least one of the substrate and semiconductor die an air vent in open communication with the cavity.
    Type: Application
    Filed: February 9, 2005
    Publication date: May 11, 2006
    Inventors: Deok-Hoon Kim, Hwan-Chul Lee
  • Publication number: 20050086501
    Abstract: The present invention relates to the information protection of digital content transferred by streaming and download service through wire or wireless Internet network. The information protection system in this invention suggests a drastic prevention method of copyrights infringement such as illegal copy and unauthorized distribution of digital content, by using of the encryption, decryption, distribution, and authentication technologies. This invention suggests the control technology of general viewer program, not the specific viewer program for information protection, using a network filter driver for streaming and file system filter driver for download service. The main function of network and file system filter driver is the filtering operation such as a hooking, changing, decrypting, and restoring of message and data packet, and transferring to the viewer program.
    Type: Application
    Filed: January 10, 2003
    Publication date: April 21, 2005
    Inventors: Je-Hak Woo, Hwan-Chul Lee, Sang-Young Cho, Seong-Ho Jeong, Young-Soo Ha, Seog-Kyoon Shin, Seong-II Kim