Patents by Inventor Joong-Hyun Kim
Joong-Hyun Kim 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: 9052542Abstract: A light source package includes a first light source configured to emit first light, an imaginary central axis of the first light extending in a first direction. The light source package may further include a second light source configured to emit second light, an imaginary central axis of the second light extending in a second direction that is different from the first direction. The light source package may further include a first optical part including a first surface that is configured to reflect at least a first portion of the first light. The light source package may further include a second optical part configured to spread the second light. The light source package may advantageously enable illuminating a desirably large display area with a minimum number of light sources and/or optical parts.Type: GrantFiled: August 9, 2012Date of Patent: June 9, 2015Assignee: Samsung Display Co., Ltd.Inventors: Young-Keun Lee, Yong Kyu Kang, Joong Hyun Kim, Sang-Chul Byun, Ju Youn Son
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Patent number: 9041745Abstract: There is provided a method of boosting a local dimming signal. In the method, it is determined whether or not local dimming signals, which are applied for individually driving light source blocks per frame, satisfy boosting conditions. Then, a predetermined local dimming signal corresponding to at least one of the light source blocks is boosted to a reference luminance value when the local dimming signals continuously satisfy the boosting conditions, and the boosting luminance of the predetermined local dimming signal at the reference luminance value is gradually decreased after a light adaptation time of an observer's eye. When the luminance of light source blocks that are boosted is gradually decreased before the light adaptation time or luminance of light source blocks that will be boosted is gradually increased to the light adaptation time, power consumption required to boost the light source blocks may be decreased.Type: GrantFiled: May 29, 2009Date of Patent: May 26, 2015Assignee: Samsung Display Co., Ltd.Inventors: Se-Ki Park, Joon-Hak Oh, Gi-Cherl Kim, Gi-Chang Park, Joong-Hyun Kim, Dong-Min Yeo, Nam-Ok Kwon, Yong-Hoon Kwon
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Publication number: 20150062871Abstract: An optical plate and a method of manufacturing the same are provided where the optical plate can be patterned to counter-compensate for luminance hot spots of corresponding light sources. More specifically, there is provided an optical plate comprising a substrate, and a patterned optical processing layer which is disposed on the substrate, wherein the patterned optical processing layer comprises flat area portions located close to the substrate, a plurality of protruding patterns which are located on or between the flat area portions and have concave portions formed at respective ends thereof, and a plurality of light diffusing patterns which are located on the concave portions, respectively.Type: ApplicationFiled: December 11, 2013Publication date: March 5, 2015Applicant: Samsung Display Co., Ltd.Inventors: Joong Hyun KIM, Tae Yong RYU, Seung Hwan CHUNG
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Patent number: 8958152Abstract: An optical plate and a tiled display apparatus having the optical plate of the present invention include a base substrate and a Fresnel lens having a plurality of Fresnel patterns protruding toward the base substrate from a flat upper surface. The optical plate further comprises an anti-reflection layer, and a high-refraction layer having a refractive index higher than that of the anti-reflection layer. The optical plate comprises an adhesive layer disposed between the Fresnel lens and the base substrate to affix the Fresnel lens to the base substrate, and a spacer disposed between the Fresnel lens and the adhesive layer to maintain a distance between the Fresnel lens and the adhesive layer. The base substrate includes a first portion having a first thickness, a second portion having a second thickness thinner than the first thickness and a connecting portion disposed between the first and second portions.Type: GrantFiled: August 26, 2011Date of Patent: February 17, 2015Assignee: Samsung Display Co., Ltd.Inventors: Joong-Hyun Kim, Sang-Hoon Lee, Min-Young Song, Seung-Mo Kim
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Publication number: 20150029692Abstract: A backlight unit which provides light to a liquid crystal display panel of a liquid crystal display. The backlight unit includes an optical lens module including an optical lens disposed above a point light source and configured to refract light output from the point light source, and a reflective polarization layer disposed directly on the optical lens and configured to separate polarization components of the light to transmit one polarization component and reflect another polarization component.Type: ApplicationFiled: December 16, 2013Publication date: January 29, 2015Applicant: Samsung Display Co., Ltd.Inventors: Seung Hwan CHUNG, Dong-Yeol Yeom, Joong Hyun Kim, Jin Sook Bang, Sang Woo Ha
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Patent number: 8896787Abstract: A light-emitting assembly includes a light guide plate (LGP), a first infrared light-emitting part, a second infrared light-emitting part and a visible light-emitting part. The LGP has printed circuit patterns formed on a lower surface thereof. The first infrared light-emitting part includes a plurality of first infrared light-emitting diodes (LEDs) disposed at a first side of the LGP and spaced apart by intervals having different sizes. The second infrared light-emitting part includes a plurality of second infrared LEDs disposed at a second side of the LGP and spaced apart by intervals having different sizes. The visible light-emitting part includes a plurality of visible LEDs disposed at a third side of the LGP and spaced apart by intervals having different sizes, so that infrared light and visible light that is emitted from the two different kinds of light sources may be uniformly provided to a touch screen panel.Type: GrantFiled: September 23, 2011Date of Patent: November 25, 2014Assignee: Samsung Display Co., Ltd.Inventors: Joong-Hyun Kim, Dong-Kwon Kim, Min-Young Song
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Publication number: 20140241010Abstract: A display device includes: a first chassis including a bottom surface, and a side wall which extends from an edge of the bottom surface; a light guide plate in the first chassis; a first fixing member which overlaps the side wall of the first chassis and contacts an upper surface of the light guide plate; and a first fastening member which fastens the first fixing member to the side wall of the first chassis. The first chassis includes a groove which extends through the side wall of the first chassis, the light guide plate includes a first protrusion which protrudes from an edge of the light guide plate and extends into the groove, and the first fixing member contacts an upper surface of the first protrusion of the light guide plate.Type: ApplicationFiled: May 2, 2014Publication date: August 28, 2014Applicant: SAMSUNG DISPLAY CO., LTD.Inventors: Jae Sang Lee, Jin Seo, Hyung Jin Kim, Joong-Hyun Kim
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Publication number: 20140204612Abstract: A light guide plate for a backlight. The light guide plate includes: a light source unit for generating light; a light guide plate proximate to the light source unit and including an upper surface and a lower surface; and a light emission pattern configured to diffuse a portion of the light directed toward an image display panel, and a first straight pattern configured to channel the light along a direction substantially parallel to a direction of propagation of the light generated by the light source unit, both the light emission pattern and the first straight pattern being disposed on one of the upper surface and the lower surface of the light guide plate, in which the first straight pattern has peaks and valleys formed in alternating and repeating manner in a direction substantially perpendicular to a direction of propagation of the light generated by the light source unit.Type: ApplicationFiled: March 24, 2014Publication date: July 24, 2014Applicant: SAMSUNG DISPLAY CO., LTD.Inventors: MIN-YOUNG SONG, SEONG-YONG HWANG, JOONG-HYUN KIM, SANG-WON LEE, JIN-SUNG CHOI, JU-HWA HA, JIN SEO, YONG-KYU KANG
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Patent number: 8752998Abstract: A display device includes: a first chassis including a bottom surface, and a side wall which extends from an edge of the bottom surface; a light guide plate in the first chassis; a first fixing member which overlaps the side wall of the first chassis and contacts an upper surface of the light guide plate; and a first fastening member which fastens the first fixing member to the side wall of the first chassis. The first chassis includes a groove which extends through the side wall of the first chassis, the light guide plate includes a first protrusion which protrudes from an edge of the light guide plate and extends into the groove, and the first fixing member contacts an upper surface of the first protrusion of the light guide plate.Type: GrantFiled: November 9, 2011Date of Patent: June 17, 2014Assignee: Samsung Display Co., Ltd.Inventors: Jae Sang Lee, Jin Seo, Hyung Jin Kim, Joong-Hyun Kim
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Patent number: 8678636Abstract: A light guide plate for a backlight. The light guide plate includes: a light source unit for generating light; a light guide plate proximate to the light source unit and including an upper surface and a lower surface; and a light emission pattern configured to diffuse a portion of the light directed toward an image display panel, and a first straight pattern configured to channel the light along a direction substantially parallel to a direction of propagation of the light generated by the light source unit, both the light emission pattern and the first straight pattern being disposed on one of the upper surface and the lower surface of the light guide plate, in which the first straight pattern has peaks and valleys formed in alternating and repeating manner in a direction substantially perpendicular to a direction of propagation of the light generated by the light source unit.Type: GrantFiled: November 1, 2011Date of Patent: March 25, 2014Assignee: Samsung Display Co., Ltd.Inventors: Min-Young Song, Seong-Yong Hwang, Joong-Hyun Kim, Sang-Won Lee, Jin-Sung Choi, Ju-Hwa Ha, Jin Seo, Yong-Kyu Kang
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Patent number: 8638281Abstract: A display apparatus including a display panel, a plurality of light sources provided below the display panel to emit light, and an optical plate provided between the display panel and the light sources to diffuse light are disclosed according to one or more embodiments. The optical plate comprises a base including a plurality of regions having different thicknesses, and a convex pattern formed on the base.Type: GrantFiled: November 20, 2009Date of Patent: January 28, 2014Assignee: Samsung Display Co., Ltd.Inventors: Dong-Yeol Yeom, Joong-Hyun Kim
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Patent number: 8517564Abstract: A light source assembly includes first light sources emitting first light in a first wavelength range, second light sources emitting second light in a second wavelength range which is at least partially different from the first wavelength range, and an optical member on which light emitted from the first light sources and the second light sources is incident. A distance between adjacent first light sources, and a distance between adjacent second light sources is defined as an average pitch. The average pitch of the second light sources arranged in a specific direction, is larger than the average pitch of the first light sources arranged in the specific direction. The optical member has a reflectance with respect to the second light, which is larger than a reflectance with respect to the first light.Type: GrantFiled: April 19, 2011Date of Patent: August 27, 2013Assignee: Samsung Display Co., Ltd.Inventors: Joong-Hyun Kim, Ju-Hwa Ha, Kang-Woo Lee
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Publication number: 20130215600Abstract: A light source package includes a first light source configured to emit first light, an imaginary central axis of the first light extending in a first direction. The light source package may further include a second light source configured to emit second light, an imaginary central axis of the second light extending in a second direction that is different from the first direction. The light source package may further include a first optical part including a first surface that is configured to reflect at least a first portion of the first light. The light source package may further include a second optical part configured to spread the second light. The light source package may advantageously enable illuminating a desirably large display area with a minimum number of light sources and/or optical parts.Type: ApplicationFiled: August 9, 2012Publication date: August 22, 2013Applicant: SAMSUNG DISPLAY CO., LTD.Inventors: Young-Keun LEE, Yong Kyu KANG, Joong Hyun KIM, Sang-Chul BYUN, Ju Youn SON
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Publication number: 20130010497Abstract: A display device includes: a first chassis including a bottom surface, and a side wall which extends from an edge of the bottom surface; a light guide plate in the first chassis; a first fixing member which overlaps the side wall of the first chassis and contacts an upper surface of the light guide plate; and a first fastening member which fastens the first fixing member to the side wall of the first chassis. The first chassis includes a groove which extends through the side wall of the first chassis, the light guide plate includes a first protrusion which protrudes from an edge of the light guide plate and extends into the groove, and the first fixing member contacts an upper surface of the first protrusion of the light guide plate.Type: ApplicationFiled: November 9, 2011Publication date: January 10, 2013Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Jae Sang Lee, Jin Seo, Hyung Jin Kim, Joong-Hyun Kim
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Publication number: 20120327685Abstract: A light guide plate for a backlight. The light guide plate includes: a light source unit for generating light; a light guide plate proximate to the light source unit and including an upper surface and a lower surface; and a light emission pattern configured to diffuse a portion of the light directed toward an image display panel, and a first straight pattern configured to channel the light along a direction substantially parallel to a direction of propagation of the light generated by the light source unit, both the light emission pattern and the first straight pattern being disposed on one of the upper surface and the lower surface of the light guide plate, in which the first straight pattern has peaks and valleys formed in alternating and repeating manner in a direction substantially perpendicular to a direction of propagation of the light generated by the light source unit.Type: ApplicationFiled: November 1, 2011Publication date: December 27, 2012Inventors: Min-Young SONG, Seong-Yong Hwang, Joong-Hyun Kim, Sang-Won Lee, Jin-Sung Choi, Ju-Hwa Ha, Jin Seo, Yong-Kyu Kang
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Patent number: 8303154Abstract: A backlight assembly includes a plurality of light sources emitting light and a diffusion plate. The diffusion plate includes an incident surface on which the light is incident, an exit surface which is opposite the incident surface and from which the light exits, and first and second lens patterns which are disposed on the exit surface and have different shapes from each other. Each of the first lens patterns includes a first curved portion which forms a curve and first linear portions which extend from both ends of the first curved portion, respectively. Each of the second lens patterns includes a second curved portion which forms a curve and second linear portions which extend from both ends of the second curved portion, respectively.Type: GrantFiled: November 6, 2009Date of Patent: November 6, 2012Assignee: Samsung Electronics Co., Ltd.Inventors: Ju-Hwa Ha, Young-Ran Son, Joong-Hyun Kim
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Publication number: 20120249438Abstract: A light-emitting assembly includes a light guide plate (LGP), a first infrared light-emitting part, a second infrared light-emitting part and a visible light-emitting part. The LGP has printed circuit patterns formed on a lower surface thereof. The first infrared light-emitting part includes a plurality of first infrared light-emitting diodes (LEDs) disposed at a first side of the LGP and spaced apart by intervals having different sizes. The second infrared light-emitting part includes a plurality of second infrared LEDs disposed at a second side of the LGP and spaced apart by intervals having different sizes. The visible light-emitting part includes a plurality of visible LEDs disposed at a third side of the LGP and spaced apart by intervals having different sizes, so that infrared light and visible light that is emitted from the two different kinds of light sources may be uniformly provided to a touch screen panel.Type: ApplicationFiled: September 23, 2011Publication date: October 4, 2012Inventors: Joong-Hyun Kim, Dong-Kwon Kim, Min-Young Song
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Patent number: 8167472Abstract: An optical sheet (140) includes a base layer (142a) and a light condensing pattern (142b) formed on the base layer integrally with the base layer and including one or more peaks and one or more valleys. Each of the base layer and the light condensing pattern includes a continuous phase and a dispersed phase. The dispersed phase is stretched in a main stretching direction.Type: GrantFiled: August 13, 2008Date of Patent: May 1, 2012Assignee: Samsung Electronics Co., Ltd.Inventors: Dong-Hoon Kim, Jin-Sung Choi, Joong-Hyun Kim, Seung-Hwan Chung, Seung-Mo Kim
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Publication number: 20120099304Abstract: A light source assembly includes first light sources emitting first light in a first wavelength range, second light sources emitting second light in a second wavelength range which is at least partially different from the first wavelength range, and an optical member on which light emitted from the first light sources and the second light sources is incident. A distance between adjacent first light sources, and a distance between adjacent second light sources is defined as an average pitch. The average pitch of the second light sources arranged in a specific direction, is larger than the average pitch of the first light sources arranged in the specific direction. The optical member has a reflectance with respect to the second light, which is larger than a reflectance with respect to the first light.Type: ApplicationFiled: April 19, 2011Publication date: April 26, 2012Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Joong-Hyun KIM, Ju-Hwa HA, Kang-Woo LEE
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Publication number: 20120062996Abstract: An optical plate and a tiled display apparatus having the optical plate of the present invention include a base substrate and a Fresnel lens having a plurality of Fresnel patterns protruding toward the base substrate from a flat upper surface. The optical plate further comprises an anti-reflection layer, and a high-refraction layer having a refractive index higher than that of the anti-reflection layer. The optical plate comprises an adhesive layer disposed between the Fresnel lens and the base substrate to affix the Fresnel lens to the base substrate, and a spacer disposed between the Fresnel lens and the adhesive layer to maintain a distance between the Fresnel lens and the adhesive layer. The base substrate includes a first portion having a first thickness, a second portion having a second thickness thinner than the first thickness and a connecting portion disposed between the first and second portions.Type: ApplicationFiled: August 26, 2011Publication date: March 15, 2012Inventors: Joong-Hyun KIM, Sang-Hoon Lee, Min-Young Song, Seung-Mo Kim