Patents by Inventor Hee-Kwang Song
Hee-Kwang Song 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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Publication number: 20240122037Abstract: A display device includes a substrate that includes a display area and a non-display area, a display element layer disposed on the display area of the substrate, an opposing substrate that faces the substrate and the display element layer, a sealing member disposed on the non-display area and that couples the substrate and the opposing substrate, and a filler disposed between the substrate and the opposing substrate. A thickness of the filler varies in the range of 60% to 400% of a thickness of the sealing member.Type: ApplicationFiled: June 21, 2023Publication date: April 11, 2024Inventors: Jae Heung HA, Jong Woo KIM, So Young OH, Woo Suk JUNG, Hee Yeon PARK, Chang Yeong SONG, Jong Kwang YUN
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Patent number: 10976599Abstract: A backlight unit includes a first light guide plate, a second light guide plate disposed over the first light guide plate, and a first wavelength conversion layer disposed between the first light guide plate and the second light guide plate.Type: GrantFiled: August 25, 2019Date of Patent: April 13, 2021Assignee: Samsung Display Co., Ltd.Inventors: Hee Kwang Song, Ju Young Yoon, Ki Se Lee
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Patent number: 10763401Abstract: A display apparatus includes a light source generating blue light. A display panel is configured to display an image. A light guide member is disposed below the display panel. A first light conversion layer is disposed between the light guide member and the display panel. The first light conversion layer includes a plurality of quantum dots. A low refractive layer is disposed between the light guide member and the first light conversion layer. The low refractive layer has a refractive index that is less than that of the light guide member. A second light conversion layer is disposed between the light source and the first light conversion layer and includes a plurality of fluoride-based or nitride-based phosphors. The first light conversion layer is configured to convert the blue light into green light, and the second light conversion layer is configured to convert the blue light into red light.Type: GrantFiled: January 11, 2019Date of Patent: September 1, 2020Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Hee-Kwang Song, Hyuk-Hwan Kim, Sanghyuck Yoon
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Publication number: 20200132914Abstract: A backlight unit comprising a light guide plate, a wavelength conversion layer disposed on the light guide plate and an optical film disposed on the wavelength conversion layer. The optical film includes a first film including a prism pattern layer, and a first low-refractive layer disposed on the first film and having a complementary shape to the prism pattern layer. The first low-refractive layer has a refractive index smaller than a refractive index of the first film.Type: ApplicationFiled: October 15, 2019Publication date: April 30, 2020Inventors: Hee Kwang SONG, Hyun Jeong KIM
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Publication number: 20200124886Abstract: A backlight unit includes a first light guide plate, a second light guide plate disposed over the first light guide plate, and a first wavelength conversion layer disposed between the first light guide plate and the second light guide plate.Type: ApplicationFiled: August 25, 2019Publication date: April 23, 2020Inventors: Hee Kwang SONG, Ju Young YOON, Ki Se LEE
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Patent number: 10600940Abstract: A display device including a light source member including a light-emitting device which emits a first light having a central wavelength in a wavelength region of about 390 nm to about 410 nm, and a first phosphor converting the first light into a second light having a central wavelength in a wavelength region of about 440 nm to about 460 nm, a display panel disposed on the light source member, and a color conversion layer disposed between the light source member and the display panel and including a luminous body which is excited by at least one of the first light or the second light and emits a light in a wavelength region which is different from that of the second light.Type: GrantFiled: March 21, 2019Date of Patent: March 24, 2020Assignee: Samsung Display Co., Ltd.Inventors: Hee-kwang Song, Sanghyuck Yoon, Juyoung Yoon, Hyeonmi Lee
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Publication number: 20190377229Abstract: A backlight assembly includes an optical member that includes a light guide plate and a wavelength conversion layer disposed on the light guide plate; and a light source disposed on one side of the light guide plate. The wavelength conversion layer includes scattering particles having a particle size of 200 nm or less, and the scattering particles are of an anatase crystal type of titanium dioxide (TiO2).Type: ApplicationFiled: January 29, 2019Publication date: December 12, 2019Inventors: Hee Kwang SONG, Ju Young YOON, Young Keun LEE
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Publication number: 20190312181Abstract: A display device including a light source member including a light-emitting device which emits a first light having a central wavelength in a wavelength region of about 390 nm to about 410 nm, and a first phosphor converting the first light into a second light having a central wavelength in a wavelength region of about 440 nm to about 460 nm, a display panel disposed on the light source member, and a color conversion layer disposed between the light source member and the display panel and including a luminous body which is excited by at least one of the first light or the second light and emits a light in a wavelength region which is different from that of the second light.Type: ApplicationFiled: March 21, 2019Publication date: October 10, 2019Inventors: Hee-kwang SONG, Sanghyuck YOON, Juyoung YOON, Hyeonmi LEE
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Publication number: 20190221724Abstract: A display apparatus includes a light source generating blue light. A display panel is configured to display an image. A light guide member is disposed below the display panel. A first light conversion layer is disposed between the light guide member and the display panel. The first light conversion layer includes a plurality of quantum dots. A low refractive layer is disposed between the light guide member and the first light conversion layer. The low refractive layer has a refractive index that is less than that of the light guide member. A second light conversion layer is disposed between the light source and the first light conversion layer and includes a plurality of fluoride-based or nitride-based phosphors. The first light conversion layer is configured to convert the blue light into green light, and the second light conversion layer is configured to convert the blue light into red light.Type: ApplicationFiled: January 11, 2019Publication date: July 18, 2019Inventors: HEE-KWANG SONG, Hyuk-Hwan Kim, Sanghyuck Yoon
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Patent number: 10330850Abstract: A display apparatus includes a display module including a light conversion member including a plurality of quantum dots, a backlight unit providing a first light to the display module, and an optical filter disposed between the display module and the backlight unit. The optical filter includes a transmission filter layer transmitting a light in the first wavelength range and a second wavelength range, reflecting a light in a third wavelength range, and having a first effective refractive index and a viewing angle control layer disposed between the transmission filter layer and the display module to couple the transmission filter layer and the display module and having a second effective refractive index equal to or smaller than the first effective refractive index.Type: GrantFiled: April 27, 2017Date of Patent: June 25, 2019Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Youngchun Kim, Kyung-min Kim, Hyuk-hwan Kim, Hee-kwang Song
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Patent number: 10332457Abstract: A display apparatus includes a backlight unit including a first light source emitting a first light having at least two peak wavelengths and a second light source emitting a second light having a peak wavelength different from the two peak wavelengths, and a display panel receiving the first and second lights to display an image corresponding to an input image data, and a light source driver which analyzes a color information of predetermined dimming areas on the basis of the input image data and controls a contribution of the first and second light sources with respect to a target brightness of each of the predetermined dimming areas in accordance of the color information.Type: GrantFiled: December 28, 2015Date of Patent: June 25, 2019Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Dongmin Yeo, Junghyun Kim, Hee-kwang Song, Seokhyun Nam
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Patent number: 10018871Abstract: A display apparatus includes a backlight unit which generates light and provides the light to a display panel which displays an image with the light, a first polarizer disposed on the backlight unit, a third polarizer disposed on the first polarizer, a second polarizer disposed between the first polarizer and the third polarizer, a light transmittance layer which blocks or transmits the light therethrough to display the image, disposed between the first polarizer and the second polarizer, and a color conversion layer disposed between the second polarizer and the third polarizer, and including a color conversion material which converts a color of light transmitted through the light transmittance layer and the second polarizer. A polarizing axis of the third polarizer is different from a polarizing axis of the second polarizer.Type: GrantFiled: September 11, 2017Date of Patent: July 10, 2018Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Hee-Kwang Song, Youngchun Kim
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Publication number: 20180157118Abstract: A light emitting package includes a light source which generates light provided to a display panel which displays an image with the light; a lead frame on which the light source is disposed and to which power for driving the light source is applied; an encapsulation mold which covers an upper portion and a side portion of the light source to protect the light source; a reflector mold in which the light source, the lead frame and the encapsulation mold are disposed, the reflector mold including a reflection surface which reflects the light generated from the light source, by mirror surface reflection, and with the light source and the encapsulation mold disposed in the reflector mold, an air layer disposed between the reflection surface of the reflector mold and the encapsulation mold.Type: ApplicationFiled: August 7, 2017Publication date: June 7, 2018Inventors: HEE-KWANG SONG, YOUNGCHUN KIM, JUNGHYUN KIM
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Publication number: 20180088266Abstract: A display apparatus includes a display module including a light conversion member including a plurality of quantum dots, a backlight unit providing a first light to the display module, and an optical filter disposed between the display module and the backlight unit. The optical filter includes a transmission filter layer transmitting a light in the first wavelength range and a second wavelength range, reflecting a light in a third wavelength range, and having a first effective refractive index and a viewing angle control layer disposed between the transmission filter layer and the display module to couple the transmission filter layer and the display module and having a second effective refractive index equal to or smaller than the first effective refractive index.Type: ApplicationFiled: April 27, 2017Publication date: March 29, 2018Inventors: Youngchun KIM, Kyung-min KIM, Hyuk-hwan KIM, Hee-kwang SONG
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Patent number: 9824638Abstract: A display device including a display panel, a timing controller, a backlight unit, and a backlight controller. The display panel includes a plurality of display blocks, and receives an image signal and display an image. The backlight unit includes a-numbered red light sources, b-numbered green light sources (a and b are natural numbers, b<a), and a-numbered blue light sources, and provides light to the display panel. The backlight controller calculates a red luminance average, a green luminance average, and a blue luminance average of the block image signals, respectively, controls a duty ratio of the red light sources based on the red and green luminance averages, controls a duty ratio of the green light sources based on the green luminance average, and controls a duty ratio of the blue light sources based on the blue and green luminance averages.Type: GrantFiled: September 18, 2015Date of Patent: November 21, 2017Assignee: Samsung Display Co., Ltd.Inventors: Yong-hoon Kwon, Junghyun Kim, Seokhyun Nam, Hee-kwang Song, Ho-sik Shin
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Patent number: 9824647Abstract: A controlling method of a display apparatus, which includes pixels each including red, green, blue, and white sub-pixels, includes receiving image data in a unit of frame, analyzing the image data to extract pixel data with respect to a first pixel among the pixels and block data with respect to a first block of a backlight unit, which corresponds to the first pixel, normalizing the pixel data and the block data, comparing the normalized pixel data and the normalized block data, and generating white compensation data corresponding to the white sub-pixel on the basis of the compared result.Type: GrantFiled: July 10, 2015Date of Patent: November 21, 2017Assignee: Samsung Display Co., Ltd.Inventors: Ho-Sik Shin, Junghyun Kim, Yong-hoon Kwon, Hee-kwang Song
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Patent number: 9632356Abstract: Reflection plate, backlight unit and liquid crystal display are provided. In one aspect, there is provided a reflection plate comprising a bottom portion and a side wall portion that extends from circumferences of the bottom portion, wherein an upper surface of the bottom portion includes a diffusion reflection surface and an inner surface of the side wall portion includes a mirror reflection surface.Type: GrantFiled: March 5, 2014Date of Patent: April 25, 2017Assignee: Samsung Display Co., Ltd.Inventors: Kyung Min Kim, Byung Seo Yoon, Hee Kwang Song
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Publication number: 20160260391Abstract: A display apparatus includes a backlight unit including a first light source emitting a first light having at least two peak wavelengths and a second light source emitting a second light having a peak wavelength different from the two peak wavelengths, and a display panel receiving the first and second lights to display an image corresponding to an input image data, and a light source driver which analyzes a color information of predetermined dimming areas on the basis of the input image data and controls a contribution of the first and second light sources with respect to a target brightness of each of the predetermined dimming areas in accordance of the color information.Type: ApplicationFiled: December 28, 2015Publication date: September 8, 2016Inventors: Dongmin Yeo, Junghyun Kim, Hee-kwang Song, Seokhyun Nam
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Patent number: 9418601Abstract: A display device includes a display panel configured to display an image corresponding to image data input thereto and be divided into a plurality of display blocks, a backlight unit configured to supply light to the display panel and including a light guide panel and a main light source module which supplies light to the light guide panel, and a luminance boosting unit configured to supply boosted light to the plurality of display blocks based on the image data and including a plurality of light source modules arranged to correspond to the plurality of display blocks, respectively.Type: GrantFiled: July 25, 2014Date of Patent: August 16, 2016Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Ho Sik Shin, Eui Jeong Kang, Yong Hoon Kwon, Jung Hyun Kim, Hee Kwang Song
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Publication number: 20160217752Abstract: A controlling method of a display apparatus, which includes pixels each including red, green, blue, and white sub-pixels, includes receiving image data in a unit of frame, analyzing the image data to extract pixel data with respect to a first pixel among the pixels and block data with respect to a first block of a backlight unit, which corresponds to the first pixel, normalizing the pixel data and the block data, comparing the normalized pixel data and the normalized block data, and generating white compensation data corresponding to the white sub-pixel on the basis of the compared result.Type: ApplicationFiled: July 10, 2015Publication date: July 28, 2016Inventors: Ho-Sik SHIN, Junghyun KIM, Yong-hoon KWON, Hee-kwang SONG