Patents by Inventor Kiyong YANG

Kiyong YANG 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: 11569409
    Abstract: Embodiments of the present disclosure relate to a transfer head assembly and an LED transfer apparatus, and more particularly, to a transfer head assembly and an LED transfer apparatus in which a plurality of pickup units picks up LEDs, which are adhered to the upper surfaces of the LEDs, and transfers the LEDs to a display substrate. According to the embodiments of the present disclosure, a large number of LEDs located on a wafer substrate or a carrier substrate can be transferred in bulk to a display substrate. Thus, it is possible to rapidly perform the transfer process of the LEDs.
    Type: Grant
    Filed: September 20, 2018
    Date of Patent: January 31, 2023
    Assignee: LG Display Co., Ltd.
    Inventors: Seungjun Lee, Myungsoo Han, Kiyong Yang
  • Patent number: 11094861
    Abstract: Provided is a display device. The display device includes a substrate having a sub-pixel area. In some examples, the substrate may have or define a plurality of sub-pixel areas. A light-emitting diode (LED) and a thin-film transistor for driving the LED are disposed in the sub-pixel area. An extended light path layer is disposed on the substrate and is configured to surround the sub-pixel area. Accordingly, it is possible so as to improve the luminous efficiency of the display device.
    Type: Grant
    Filed: August 26, 2019
    Date of Patent: August 17, 2021
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Kiyong Yang, MinJae Kang, YongSeok Kwak, Myungsoo Han, JaeMin Sim
  • Publication number: 20210083142
    Abstract: Embodiments of the present disclosure relate to a transfer head assembly and an LED transfer apparatus, and more particularly, to a transfer head assembly and an LED transfer apparatus in which a plurality of pickup units picks up LEDs, which are adhered to the upper surfaces of the LEDs, and transfers the LEDs to a display substrate. According to the embodiments of the present disclosure, a large number of LEDs located on a wafer substrate or a carrier substrate can be transferred in bulk to a display substrate. Thus, it is possible to rapidly perform the transfer process of the LEDs.
    Type: Application
    Filed: September 20, 2018
    Publication date: March 18, 2021
    Inventors: Seungjun Lee, Myungsoo Han, Kiyong Yang
  • Publication number: 20200212267
    Abstract: A display device comprises a first substrate including a plurality of pixels, a plurality of light emitting diodes (LEDs) in each of the plurality of pixels, a plurality of light conversion units on the plurality of LEDs, and a plurality of partitions configured to surround each of the plurality of light conversion units. Each of the plurality of light conversion units is in a groove inside the plurality of partitions.
    Type: Application
    Filed: December 13, 2019
    Publication date: July 2, 2020
    Applicant: LG Display Co., Ltd.
    Inventors: YongSeok KWAK, Myungsoo HAN, Kiyong YANG, MinJae KANG
  • Patent number: 10606122
    Abstract: Disclosed are a light source module, a backlight unit including the same, and a liquid crystal display device including the same, which prevent image quality and reliability from being degraded. The light source module includes a printed circuit board (PCB), a plurality of light sources mounted on the PCB, an optical member provided on the PCB to surround the plurality of light sources, an antistatic cover supported to the optical member to cover the plurality of light sources, and a ground member grounding the antistatic cover.
    Type: Grant
    Filed: December 7, 2017
    Date of Patent: March 31, 2020
    Assignee: LG Display Co., Ltd.
    Inventors: MyungWon Seo, Jaeyong Choi, Kiyong Yang, MinJae Kang, SeungJun Lee
  • Publication number: 20200075823
    Abstract: Provided is a display device. The display device includes a substrate having a sub-pixel area. In some examples, the substrate may have or define a plurality of sub-pixel areas. A light-emitting diode (LED) and a thin-film transistor for driving the LED are disposed in the sub-pixel area. An extended light path layer is disposed on the substrate and is configured to surround the sub-pixel area. Accordingly, it is possible so as to improve the luminous efficiency of the display device.
    Type: Application
    Filed: August 26, 2019
    Publication date: March 5, 2020
    Inventors: Kiyong YANG, MinJae KANG, YongSeok KWAK, Myungsoo HAN, JaeMin SIM
  • Patent number: 10566381
    Abstract: A light-emitting diode (LED) chip and a display device having the same are provided. A green LED is regrown on a blue LED to produce blue and green light, and a red phosphor is disposed on the blue or green LED to produce red light. Red light, green light, and blue light are to be produced using a single LED chip. The single LED chip forms three subpixels therein so as to facilitate a transfer process of the LED chip to a display panel. The LED chip is configured based on the blue, green, and blue LEDs so as to facilitate the fabrication and driving of the LED chip.
    Type: Grant
    Filed: October 9, 2018
    Date of Patent: February 18, 2020
    Assignee: LG Display Co., Ltd.
    Inventors: YongSeok Kwak, Kiyong Yang, JinSu Moon, MyungWon Seo
  • Patent number: 10429566
    Abstract: Disclosed are a light source module, a backlight unit including the same, and an LCD device including the same, which prevent image quality and reliability from being degraded. The light source module includes a plurality of light sources mounted on a printed circuit board (PCB), an optical member provided on the PCB to surround the plurality of light sources, and a conductive member coupled to the optical member. The conductive member includes a protrusion grounding the conductive member.
    Type: Grant
    Filed: December 19, 2017
    Date of Patent: October 1, 2019
    Assignee: LG Display Co., Ltd.
    Inventors: MinJae Kang, Jaeyong Choi, MyungWon Seo, Kiyong Yang, SeungJun Lee
  • Publication number: 20190189679
    Abstract: A light-emitting diode (LED) chip and a display device having the same are provided. A green LED is regrown on a blue LED to produce blue and green light, and a red phosphor is disposed on the blue or green LED to produce red light. Red light, green light, and blue light are to be produced using a single LED chip. The single LED chip forms three subpixels therein so as to facilitate a transfer process of the LED chip to a display panel. The LED chip is configured based on the blue, green, and blue LEDs so as to facilitate the fabrication and driving of the LED chip.
    Type: Application
    Filed: October 9, 2018
    Publication date: June 20, 2019
    Applicant: LG Display Co., Ltd.
    Inventors: YongSeok KWAK, Kiyong YANG, JinSu MOON, MyungWon SEO
  • Patent number: 10234617
    Abstract: Discussed is a glass light guide plate that is used in a back light unit of a display device. Some features of the glass light guide plate for the back light unit can be improved by optimizing a relationship between a direction of a bubble inside the glass light guide plate and a light source, the sizes of the bubble and a light guide pattern, and so on, and by optimizing an arrangement density of light guide patterns in each region, a kind of light guide pattern ink (IR-curable ink), a curing condition, a refractive index, and so on to be suitable for the material of the glass light guide plate.
    Type: Grant
    Filed: October 27, 2016
    Date of Patent: March 19, 2019
    Assignee: LG DISPLAY CO., LTD.
    Inventors: ChangYul Moon, YoungHun Jeong, Kiyong Yang, Sehyun Park
  • Publication number: 20180180791
    Abstract: Disclosed are a light source module, a backlight unit including the same, and an LCD device including the same, which prevent image quality and reliability from being degraded. The light source module includes a plurality of light sources mounted on a printed circuit board (PCB), an optical member provided on the PCB to surround the plurality of light sources, and a conductive member coupled to the optical member. The conductive member includes a protrusion grounding the conductive member.
    Type: Application
    Filed: December 19, 2017
    Publication date: June 28, 2018
    Applicant: LG Display Co., Ltd.
    Inventors: MinJae KANG, Jaeyong CHOI, MyungWon SEO, Kiyong YANG, SeungJun LEE
  • Publication number: 20180180940
    Abstract: Disclosed are a light source module, a backlight unit including the same, and a liquid crystal display device including the same, which prevent image quality and reliability from being degraded. The light source module includes a printed circuit board (PCB), a plurality of light sources mounted on the PCB, an optical member provided on the PCB to surround the plurality of light sources, an antistatic cover supported to the optical member to cover the plurality of light sources, and a ground member grounding the antistatic cover.
    Type: Application
    Filed: December 7, 2017
    Publication date: June 28, 2018
    Inventors: MyungWon SEO, Jaeyong CHOI, Kiyong YANG, MinJae KANG, SeungJun LEE
  • Publication number: 20170123134
    Abstract: Discussed is a glass light guide plate that is used in a back light unit of a display device. Some features of the glass light guide plate for the back light unit can be improved by optimizing a relationship between a direction of a bubble inside the glass light guide plate and a light source, the sizes of the bubble and a light guide pattern, and so on, and by optimizing an arrangement density of light guide patterns in each region, a kind of light guide pattern ink (IR-curable ink), a curing condition, a refractive index, and so on to be suitable for the material of the glass light guide plate.
    Type: Application
    Filed: October 27, 2016
    Publication date: May 4, 2017
    Applicant: LG DISPLAY CO., LTD.
    Inventors: ChangYul MOON, YoungHun JEONG, Kiyong YANG, Sehyun PARK