Patents by Inventor Jae Ryang Choi

Jae Ryang Choi 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: 9293676
    Abstract: A method of manufacturing a light-emitting diode (LED) chip including forming an LED on a first substrate, the LED including an N-type and a P-type semiconductor layer, the LED being formed to expose surfaces of the N-type and P-type semiconductor layers, forming bumps respectively electrically connected to the N-type and P-type semiconductor layers, forming electrode pads corresponding to the bumps on a second substrate, aligning the LED chip and the second substrate so that the bumps respectively correspond to the electrode pads, and increasing a temperature of the bumps to a first temperature, applying a pressure to the first and second substrates, and increasing the temperature of the bumps to a second temperature for a first time period while maintaining the pressure, and maintaining the second temperature from the first time period to a second time period while maintaining the pressure, and then releasing the pressure and cooling the bumps.
    Type: Grant
    Filed: June 19, 2015
    Date of Patent: March 22, 2016
    Assignee: Seoul Viosys Co., Ltd.
    Inventors: Kyu Ho Lee, Chang Hoon Kim, Jae Ryang Choi, Dae Woong Suh
  • Publication number: 20150287900
    Abstract: A method of manufacturing a light-emitting diode (LED) chip including forming an LED on a first substrate, the LED including an N-type and a P-type semiconductor layer, the LED being formed to expose surfaces of the N-type and P-type semiconductor layers, forming bumps respectively electrically connected to the N-type and P-type semiconductor layers, forming electrode pads corresponding to the bumps on a second substrate, aligning the LED chip and the second substrate so that the bumps respectively correspond to the electrode pads, and increasing a temperature of the bumps to a first temperature, applying a pressure to the first and second substrates, and increasing the temperature of the bumps to a second temperature for a first time period while maintaining the pressure, and maintaining the second temperature from the first time period to a second time period while maintaining the pressure, and then releasing the pressure and cooling the bumps.
    Type: Application
    Filed: June 19, 2015
    Publication date: October 8, 2015
    Inventors: Kyu Ho LEE, Chang Hoon KIM, Jae Ryang CHOI, Dae Woong SUH
  • Patent number: 9082933
    Abstract: The present invention is directed to a light emitting diode (LED) assembly and a method for fabricating the same. According to the present invention, there is provided an LED assembly comprising an LED comprising at least an N-type semiconductor layer and a P-type semiconductor layer; and bumps provided on the LED and electrically connected to the semiconductor layers, wherein the bump comprises a first region made of a gold (Au) compound including tin (Sn) and a second region made of gold.
    Type: Grant
    Filed: December 9, 2010
    Date of Patent: July 14, 2015
    Assignee: Seoul Viosys Co., Ltd.
    Inventors: Kyu Ho Lee, Dae Woong Suh, Jae Ryang Choi, Chang Hoon Kim
  • Publication number: 20130221372
    Abstract: The present invention is directed to a light emitting diode (LED) assembly and a method for fabricating the same. According to the present invention, there is provided an LED assembly comprising an LED comprising at least an N-type semiconductor layer and a P-type semiconductor layer; and bumps provided on the LED and electrically connected to the semiconductor layers, wherein the bump comprises a first region made of a gold (Au) compound including tin (Sn) and a second region made of gold.
    Type: Application
    Filed: December 9, 2010
    Publication date: August 29, 2013
    Applicant: SEOUL OPTO DEVICE CO., LTD.
    Inventors: Kyu Ho Lee, Dae Woong Suh, Jae Ryang Choi, Chang Hoon Kim