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).
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Patent number: 11569409Abstract: 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: GrantFiled: September 20, 2018Date of Patent: January 31, 2023Assignee: LG Display Co., Ltd.Inventors: Seungjun Lee, Myungsoo Han, Kiyong Yang
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Patent number: 11094861Abstract: 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: GrantFiled: August 26, 2019Date of Patent: August 17, 2021Assignee: LG DISPLAY CO., LTD.Inventors: Kiyong Yang, MinJae Kang, YongSeok Kwak, Myungsoo Han, JaeMin Sim
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Publication number: 20210083142Abstract: 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: ApplicationFiled: September 20, 2018Publication date: March 18, 2021Inventors: Seungjun Lee, Myungsoo Han, Kiyong Yang
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Publication number: 20200212267Abstract: 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: ApplicationFiled: December 13, 2019Publication date: July 2, 2020Applicant: LG Display Co., Ltd.Inventors: YongSeok KWAK, Myungsoo HAN, Kiyong YANG, MinJae KANG
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Patent number: 10606122Abstract: 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: GrantFiled: December 7, 2017Date of Patent: March 31, 2020Assignee: LG Display Co., Ltd.Inventors: MyungWon Seo, Jaeyong Choi, Kiyong Yang, MinJae Kang, SeungJun Lee
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Publication number: 20200075823Abstract: 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: ApplicationFiled: August 26, 2019Publication date: March 5, 2020Inventors: Kiyong YANG, MinJae KANG, YongSeok KWAK, Myungsoo HAN, JaeMin SIM
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Patent number: 10566381Abstract: 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: GrantFiled: October 9, 2018Date of Patent: February 18, 2020Assignee: LG Display Co., Ltd.Inventors: YongSeok Kwak, Kiyong Yang, JinSu Moon, MyungWon Seo
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Patent number: 10429566Abstract: 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: GrantFiled: December 19, 2017Date of Patent: October 1, 2019Assignee: LG Display Co., Ltd.Inventors: MinJae Kang, Jaeyong Choi, MyungWon Seo, Kiyong Yang, SeungJun Lee
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Publication number: 20190189679Abstract: 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: ApplicationFiled: October 9, 2018Publication date: June 20, 2019Applicant: LG Display Co., Ltd.Inventors: YongSeok KWAK, Kiyong YANG, JinSu MOON, MyungWon SEO
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Patent number: 10234617Abstract: 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: GrantFiled: October 27, 2016Date of Patent: March 19, 2019Assignee: LG DISPLAY CO., LTD.Inventors: ChangYul Moon, YoungHun Jeong, Kiyong Yang, Sehyun Park
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Publication number: 20180180791Abstract: 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: ApplicationFiled: December 19, 2017Publication date: June 28, 2018Applicant: LG Display Co., Ltd.Inventors: MinJae KANG, Jaeyong CHOI, MyungWon SEO, Kiyong YANG, SeungJun LEE
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Publication number: 20180180940Abstract: 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: ApplicationFiled: December 7, 2017Publication date: June 28, 2018Inventors: MyungWon SEO, Jaeyong CHOI, Kiyong YANG, MinJae KANG, SeungJun LEE
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Publication number: 20170123134Abstract: 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: ApplicationFiled: October 27, 2016Publication date: May 4, 2017Applicant: LG DISPLAY CO., LTD.Inventors: ChangYul MOON, YoungHun JEONG, Kiyong YANG, Sehyun PARK