Patents by Inventor Heung-Yeol Na

Heung-Yeol Na 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: 11784081
    Abstract: A micro device transfer apparatus and a micro device transfer method are provided. The micro device transfer apparatus comprises a stage unit including a stage where a target substrate is to be disposed, a plurality of transfer head units disposed above the stage, and a transfer head unit moving part configured to move the plurality of transfer head units, wherein, the transfer head unit comprises a carrier substrate fastening part configured to fasten a carrier substrate where a plurality of micro devices are disposed, a mask unit disposed above the carrier substrate fastening part, the mask unit comprising a mask including an opening part and a shielding part, a light emitting part disposed on the mask unit, and a housing formed around the carrier substrate fastening part, the mask unit, and the light emitting part.
    Type: Grant
    Filed: October 29, 2021
    Date of Patent: October 10, 2023
    Assignee: Samsung Display Co., Ltd.
    Inventors: Heung Yeol Na, Kang Won Lee, Yoon Jae Lee
  • Publication number: 20220384219
    Abstract: A laser machining apparatus includes, a processing chamber, a window disposed in a surface of the processing chamber, a substrate carrier disposed inside the processing chamber and facing the window, a laser irradiator which irradiates a laser onto the substrate carrier through the window, a protector supplier disposed on a side of the processing chamber, a protector retriever disposed on an opposite side of the processing chamber opposite to the side of the processing chamber, and a protector which connects the protector supplier with the protector retriever, where at least a portion of the protector is disposed between the substrate carrier and the window in the processing chamber.
    Type: Application
    Filed: January 31, 2022
    Publication date: December 1, 2022
    Inventors: Heung Yeol NA, Tae Hun KIM, Jung Woo CHOI
  • Publication number: 20220051925
    Abstract: A micro device transfer apparatus and a micro device transfer method are provided. The micro device transfer apparatus comprises a stage unit including a stage where a target substrate is to be disposed, a plurality of transfer head units disposed above the stage, and a transfer head unit moving part configured to move the plurality of transfer head units, wherein, the transfer head unit comprises a carrier substrate fastening part configured to fasten a carrier substrate where a plurality of micro devices are disposed, a mask unit disposed above the carrier substrate fastening part, the mask unit comprising a mask including an opening part and a shielding part, a light emitting part disposed on the mask unit, and a housing formed around the carrier substrate fastening part, the mask unit, and the light emitting part.
    Type: Application
    Filed: October 29, 2021
    Publication date: February 17, 2022
    Inventors: Heung Yeol NA, Kang Won LEE, Yoon Jae LEE
  • Patent number: 11195742
    Abstract: A micro device transfer apparatus and a micro device transfer method are provided. The micro device transfer apparatus comprises a stage unit including a stage where a target substrate is to be disposed, a plurality of transfer head units disposed above the stage, and a transfer head unit moving part configured to move the plurality of transfer head units, wherein, the transfer head unit comprises a carrier substrate fastening part configured to fasten a carrier substrate where a plurality of micro devices are disposed, a mask unit disposed above the carrier substrate fastening part, the mask unit comprising a mask including an opening part and a shielding part, a light emitting part disposed on the mask unit, and a housing formed around the carrier substrate fastening part, the mask unit, and the light emitting part.
    Type: Grant
    Filed: June 23, 2020
    Date of Patent: December 7, 2021
    Inventors: Heung Yeol Na, Kang Won Lee, Yoon Jae Lee
  • Publication number: 20210028047
    Abstract: A micro device transfer apparatus and a micro device transfer method are provided. The micro device transfer apparatus comprises a stage unit including a stage where a target substrate is to be disposed, a plurality of transfer head units disposed above the stage, and a transfer head unit moving part configured to move the plurality of transfer head units, wherein, the transfer head unit comprises a carrier substrate fastening part configured to fasten a carrier substrate where a plurality of micro devices are disposed, a mask unit disposed above the carrier substrate fastening part, the mask unit comprising a mask including an opening part and a shielding part, a light emitting part disposed on the mask unit, and a housing formed around the carrier substrate fastening part, the mask unit, and the light emitting part.
    Type: Application
    Filed: June 23, 2020
    Publication date: January 28, 2021
    Inventors: Heung Yeol NA, Kang Won LEE, Yoon Jae LEE
  • Patent number: 10676811
    Abstract: A method of manufacturing a display device is provided. A method of manufacturing a display device comprises preparing a thin film forming apparatus including a crucible, which stores a source material for forming a thin film, and a front heatsink, which is disposed on the crucible and includes a reflective plate, wherein the reflective plate has a first surface with a first reflectivity and a second surface with a second reflectivity, which is different from the first reflectivity; and forming a thin film on a substrate by evaporating the source material of the thin film forming apparatus.
    Type: Grant
    Filed: September 15, 2016
    Date of Patent: June 9, 2020
    Assignee: Samsung Display Co., Ltd.
    Inventors: Heung Yeol Na, Dong Wook Kim, Jae Wan Seol, Seong Ho Jeong
  • Publication number: 20170252774
    Abstract: A method of manufacturing a display device is provided. A method of manufacturing a display device comprises preparing a thin film forming apparatus including a crucible, which stores a source material for forming a thin film, and a front heatsink, which is disposed on the crucible and includes a reflective plate, wherein the reflective plate has a first surface with a first reflectivity and a second surface with a second reflectivity, which is different from the first reflectivity; and forming a thin film on a substrate by evaporating the source material of the thin film forming apparatus.
    Type: Application
    Filed: September 15, 2016
    Publication date: September 7, 2017
    Inventors: Heung Yeol NA, Dong Wook KIM, Jae Wan SEOL, Seong Ho JEONG
  • Patent number: 9472132
    Abstract: A display device includes a timing controller for controlling the display of an image. The timing controller forms a frame for an image signal based on a main frame, a compensation frame, and at least one blank frame. The timing controller also determines a driving method for the display pixels to generate output image data. The main frame serves to display the image signal. The compensation frame serves to compensate luminance of the main frame. The blank frame serves to express a black gray scale value.
    Type: Grant
    Filed: July 10, 2014
    Date of Patent: October 18, 2016
    Assignee: Samsung Display Co., Ltd.
    Inventors: Leonid Kaplan, Heung-Yeol Na, Baek-Woon Lee, Won-Sik Hyun, Jae-Hoon Lee
  • Patent number: 9368068
    Abstract: Exemplary embodiments of the present invention relate to a pixel circuit comprising an organic light emitting diode (OLED), an RS trigger comprising a first terminal connected to a scan line, a second terminal connected to an enable line, and a third terminal connected to a data line, the RS trigger configured to generate an output signal according to an enable signal, a data signal, and a scan signal respectively received via the enable line, the data line, and the scan line, and a driving transistor comprising a first electrode connected to a first power source, a second electrode connected to an anode of the OLED, and a gate electrode connected to an output terminal of the RS trigger, the driver transistor configured to control a current flowing through the OLED in response to the output signal of the RS trigger.
    Type: Grant
    Filed: April 8, 2014
    Date of Patent: June 14, 2016
    Assignee: Samsung Display Co., Ltd.
    Inventors: Leonid Kaplan, Heung-Yeol Na, Baek-Woon Lee, Won-Sik Hyun, Jae-Hoon Lee
  • Patent number: 9311851
    Abstract: A pixel circuit includes: an organic light emitting diode (“OLED”); a threshold circuit which generates an output signal based on an input signal, where the threshold circuit has a hysteresis characteristic with respect to the input signal; a first transistor including a first electrode connected to a data line, a second electrode connected to an input terminal of the threshold circuit, and a gate electrode connected to a scan line; and a second transistor including a first electrode connected to a first power, a second electrode connected to an anode of the organic light emitting diode, and a gate electrode connected to an output terminal of the threshold circuit, where the second transistor controls a current amount that flows to the organic light emitting diode from the first power based on the output signal of the threshold circuit.
    Type: Grant
    Filed: April 18, 2014
    Date of Patent: April 12, 2016
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Leonid Kaplan, Heung-Yeol Na, Baek-Woon Lee, Won-Sik Hyun, Jae-Hoon Lee
  • Patent number: 9287525
    Abstract: An exemplary embodiment described technology relates generally to an organic light emitting diode (OLED) display and a manufacturing method thereof. The organic light emitting diode (OLED) display according to an exemplary embodiment includes: a substrate; an encapsulation member; an organic light emitting element between the substrate and the encapsulation member; a middle sealing member including one side disposed between the substrate and the encapsulation member and another side extended from the one side to be bent and enclosing an edge of the encapsulation member; a first sealant sealing and combining the one side of the middle sealing member and the substrate to each other; a second sealant sealing and combining the other side of the middle sealing member and the encapsulation member to each other; and a getter at the one side of the middle sealing member and the encapsulation member.
    Type: Grant
    Filed: April 14, 2015
    Date of Patent: March 15, 2016
    Assignee: Samsung Display Co., Ltd.
    Inventors: Valeriy Prushinskiy, Won-Sik Hyun, Heung-Yeol Na, Min-Soo Kim, Beohm-Rock Choi
  • Patent number: 9257069
    Abstract: A controller for a display panel may include a first supply circuit to output first and second driving voltages to a sub-pixel of a first color; and a second supply circuit to output third and fourth driving voltages to a sub-pixel of a second color. The first driving voltage may be greater than the second driving voltage, and the third driving voltage may be greater than the fourth driving voltage. Also, at least three of the first, second, third, and fourth driving voltages may be different from one another.
    Type: Grant
    Filed: December 17, 2013
    Date of Patent: February 9, 2016
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Leonid Kaplan, Heung-Yeol Na, Ho-Ryun Chung, Wang-Jo Lee, Jang-Doo Lee
  • Publication number: 20150221892
    Abstract: An exemplary embodiment described technology relates generally to an organic light emitting diode (OLED) display and a manufacturing method thereof. The organic light emitting diode (OLED) display according to an exemplary embodiment includes: a substrate; an encapsulation member; an organic light emitting element between the substrate and the encapsulation member; a middle sealing member including one side disposed between the substrate and the encapsulation member and another side extended from the one side to be bent and enclosing an edge of the encapsulation member; a first sealant sealing and combining the one side of the middle sealing member and the substrate to each other; a second sealant sealing and combining the other side of the middle sealing member and the encapsulation member to each other; and a getter at the one side of the middle sealing member and the encapsulation member.
    Type: Application
    Filed: April 14, 2015
    Publication date: August 6, 2015
    Inventors: Valeriy Prushinskiy, Won-Sik Hyun, Heung-Yeol Na, Min-Soo Kim, Beohm-Rock Choi
  • Patent number: 9076390
    Abstract: A display device includes a display unit including pixels, each of which emits light according to data voltages, respectively; and a timing controller which divides an area of the display unit into an upper, center and bottom portions, divides one frame time into light emission sub-frames of a light emission period and a blank sub-frame of a blank period in which is supplied a black data signal, divides the upper, center and the bottom portions into groups, differentiates a scan start time of a light emission sub-frame and a scan start time of the blank sub-frame of each group, and increases the light emission period and decreases the blank period in proportional to an increase ratio of the light emission period as a group is closer to a middle of the center portion.
    Type: Grant
    Filed: September 30, 2013
    Date of Patent: July 7, 2015
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Leonid Kaplan, Heung-Yeol Na, Baek-Woon Lee, Won-Sik Hyun, Jae-Hoon Lee
  • Patent number: 9041047
    Abstract: An exemplary embodiment described technology relates generally to an organic light emitting diode (OLED) display and a manufacturing method thereof. The organic light emitting diode (OLED) display according to an exemplary embodiment includes: a substrate; an encapsulation member; an organic light emitting element between the substrate and the encapsulation member; a middle sealing member including one side disposed between the substrate and the encapsulation member and another side extended from the one side to be bent and enclosing an edge of the encapsulation member; a first sealant sealing and combining the one side of the middle sealing member and the substrate to each other; a second sealant sealing and combining the other side of the middle sealing member and the encapsulation member to each other; and a getter at the one side of the middle sealing member and the encapsulation member.
    Type: Grant
    Filed: June 27, 2012
    Date of Patent: May 26, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Valeriy Prushinskiy, Won-Sik Hyun, Heung-Yeol Na, Min-Soo Kim, Beohm-Rock Choi
  • Patent number: 9034156
    Abstract: Provided is a sputtering apparatus which deposits a metal catalyst on an amorphous silicon layer at an extremely low concentration in order to crystallize amorphous silicon, and particularly minimizes non-uniformity of the metal catalyst caused by a pre-sputtering process without reducing process efficiency. This sputtering apparatus improves the uniformity of the metal catalyst deposited on the amorphous silicon layer at an extremely low concentration. The sputtering apparatus includes a process chamber having first and second regions, a metal target located inside the process chamber, a target transfer unit moving the metal target and having a first shield for controlling a traveling direction of a metal catalyst discharged from the metal target, and a substrate holder disposed in the second region to be capable of facing the metal target.
    Type: Grant
    Filed: November 17, 2010
    Date of Patent: May 19, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Tae-Hoon Yang, Ki-Yong Lee, Jin-Wook Seo, Byoung-Keon Park, Yun-Mo Chung, Dong-Hyun Lee, Kil-Won Lee, Jae-Wan Jung, Jong-Ryuk Park, Bo-Kyung Choi, Won-Bong Baek, Byung-Soo So, Jong-Won Hong, Min-Jae Jeong, Heung-Yeol Na, Ivan Maidanchuk, Eu-Gene Kang, Seok-Rak Chang
  • Patent number: 9006012
    Abstract: A method of manufacturing an organic light emitting diode display according to an exemplary embodiment of the present invention includes: forming a first electrode on a substrate; forming an insulation layer on the first electrode; etching the insulation layer to expose the first electrode so as to form a pixel defining layer having the same height as the first electrode; forming an organic layer including one or more emission layers on the first electrode of a sub-pixel region defined by the pixel defining layer by applying a laser-induced thermal imaging (LITI) method; and forming a second electrode on the organic layer.
    Type: Grant
    Filed: October 18, 2013
    Date of Patent: April 14, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Valeriy Prushinskiy, Min-Soo Kim, Won-Sik Hyun, Heung-Yeol Na, Jin-Won Sun
  • Patent number: 8992749
    Abstract: Provided is a sputtering apparatus which deposits a metal catalyst on an amorphous silicon layer at an extremely low concentration in order to crystallize amorphous silicon, and particularly minimizes non-uniformity of the metal catalyst caused by a pre-sputtering process without reducing process efficiency. This sputtering apparatus improves the uniformity of the metal catalyst deposited on the amorphous silicon layer at an extremely low concentration. The sputtering apparatus includes a process chamber having first and second regions, a metal target located inside the process chamber, a target transfer unit moving the metal target and having a first shield for controlling a traveling direction of a metal catalyst discharged from the metal target, and a substrate holder disposed in the second region to be capable of facing the metal target.
    Type: Grant
    Filed: November 17, 2010
    Date of Patent: March 31, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Tae-Hoon Yang, Ki-Yong Lee, Jin-Wook Seo, Byoung-Keon Park, Yun-Mo Chung, Dong-Hyun Lee, Kil-Won Lee, Jae-Wan Jung, Jong-Ryuk Park, Bo-Kyung Choi, Won-Bong Baek, Byung-Soo So, Jong-Won Hong, Min-Jae Jeong, Heung-Yeol Na, Ivan Maidanchuk, Eu-Gene Kang, Seok-Rak Chang
  • Publication number: 20150054862
    Abstract: A display device includes a timing controller for controlling the display of an image. The timing controller forms a frame for an image signal based on a main frame, a compensation frame, and at least one blank frame. The timing controller also determines a driving method for the display pixels to generate output image data. The main frame serves to display the image signal. The compensation frame serves to compensate luminance of the main frame. The blank frame serves to express a black gray scale value.
    Type: Application
    Filed: July 10, 2014
    Publication date: February 26, 2015
    Inventors: Leonid KAPLAN, Heung-Yeol NA, Baek-Woon LEE, Won-Sik HYUN, Jae-Hoon LEE
  • Publication number: 20150054718
    Abstract: Exemplary embodiments of the present invention relates to a pixel circuit for displaying an image of uniform luminance. The pixel circuit comprising an organic light emitting diode (OLED), an RS trigger comprising a first terminal connected to a scan line, a second terminal connected to an enable line, and a third terminal connected to a data line, the RS trigger configured to generate an output signal according to an enable signal, a data signal, and a scan signal respectively received via the enable line, the data line, and the scan line, and a driving transistor comprising a first electrode connected to a first power source, a second electrode connected to an anode of the OLED, and a gate electrode connected to an output terminal of the RS trigger, the driver transistor configured to control a current flowing through the OLED in response to the output signal of the RS trigger.
    Type: Application
    Filed: April 8, 2014
    Publication date: February 26, 2015
    Applicant: Samsung Display Co., Ltd.
    Inventors: Leonid Kaplan, Heung-Yeol Na, Baek-Woon Lee, Won-Sik Hyun, Jae-Hoon Lee