Patents by Inventor Young-chol Lee
Young-chol Lee 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: 20190121174Abstract: Provided is a display device with enhanced uniformity of brightness. The display device includes a display panel, and a backlight unit configured to supply light to the display panel, wherein the display panel includes a liquid crystal panel with first and second surfaces opposite to each other, a first polarizing plate arranged on the first surface of the liquid crystal panel, a second polarizing plate arranged on the second surface of the liquid crystal panel, a light absorbing layer arranged on the second polarizing plate to absorb a portion of the light supplied from the backlight unit, and a light absorbing material included in the light absorbing layer to absorb light of particular wavelengths.Type: ApplicationFiled: October 19, 2018Publication date: April 25, 2019Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Young Chol LEE, Wook-Jae JEON, Il Yong JUNG
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Publication number: 20190122597Abstract: A display apparatus includes a display panel receiving light from a light source. The display panel includes a liquid crystal panel, first and second polarizers respectively disposed on front and rear sides of the liquid crystal panel, and an optical layer disposed on a front surface of the second polarizer. The optical layer includes a first resin layer having light absorption portions for absorbing a portion of incident light, a second resin layer disposed on a front surface of the first resin layer, the second resin layer having a higher refractive index than the first resin layer, the second resin layer having light diffusion portions for diffusing light not absorbed by the light absorption portions.Type: ApplicationFiled: October 9, 2018Publication date: April 25, 2019Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Young Chol LEE, Wook-Jae JEON, Tae Ik KIM, Il Yong JUNG, Byoung-Jin CHO, Jun Sung CHOI
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Patent number: 10260710Abstract: A direct-type reflective diffusion lens and a lighting installation including the reflective diffusion lens. The reflective diffusion lens includes a first reflective surface concave and having a longitudinal cross-section with a parabola shape or normal distribution shape to totally reflect incident light, and a bottom surface comprising a light incident surface concave toward the first reflective surface. The reflective diffusion lens includes a second reflective surface having a longitudinal cross-section inclined by a first angle with respect to a central axis of the lens to totally reflect incident light and a refractive surface connecting the first reflective surface with the bottom surface. The refractive surface includes a first refractive surface having a longitudinal cross-section inclined by a second angle with respect to the central axis and a second refractive surface having a longitudinal cross-section inclined by a third angle with respect to the central axis.Type: GrantFiled: July 27, 2016Date of Patent: April 16, 2019Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Hyun Choi, Cheoul Young Kim, Keun Bum Lee, Seung Jae Lee, Young Chol Lee, Yae Kyung Son
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Publication number: 20180356685Abstract: A display device includes a display panel and a plurality of light source modules arranged in parallel to a rear surface of the display panel to emit light toward the display panel, and a plurality of light source modules provided to be independently operable. A plurality of light source modules includes a modulator configured to guide light, a light source disposed on a rear surface of the modulator to generate light, a reflective member disposed opposite to the light source on a front surface of the modulator and configured to reflect the generated light to inside or the rear surface of the modulator, and a light conversion member disposed on the rear surface of the modulator and configured to convert the wavelength of light guided by the modulator, the light conversion member being formed in a predetermined pattern shape.Type: ApplicationFiled: June 7, 2018Publication date: December 13, 2018Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Nae-Won JANG, Young Chol LEE, Kyung Soo PARK, Ho Seok LEE
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Patent number: 10108045Abstract: This is provided a display apparatus. The display apparatus a light source configured to emit a light; and a reflective diffusion lens configured to emit a light emitted from the light source to an upper direction or a lower direction with respect to a direction perpendicular to an optical axis of the light source through an incident surface, a lateral surface, and a reflective diffusion surface.Type: GrantFiled: January 27, 2016Date of Patent: October 23, 2018Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Young Chol Lee, Yae Kyung Son, Yong-hun Kwon, Jong Cheol Lee, Jae Hak Cho
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Patent number: 10001670Abstract: A supporting member usable with a backlight unit of an image display apparatus includes a supporting portion that is formed of a transparent material, disposed below a diffuser plate to support the diffuser plate, and includes a first end being in contact with the diffuser plate and two flat side surfaces disposed in parallel to one another and connected to one another at the first end; a base that is formed at a second end of the supporting portion and fixes the supporting portion to an under chassis of the backlight unit; and a reinforcing portion that is disposed on a top surface of the base.Type: GrantFiled: August 10, 2015Date of Patent: June 19, 2018Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Byoung-jin Cho, Young-chol Lee, Hyung-chul Kim, Heong-seog Lee, Hyeong-sik Choi
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Publication number: 20180156959Abstract: A display apparatus includes: a display panel; a light source package configured to supply light; and a light guide plate configured to receive the light supplied by the light source package and guide the light to the display panel. The light source package includes: a light source configured to generate the light; a first reflector disposed around the light source; a light converter disposed between the light source and the light guide plate, the light converter being configured to convert properties of the light directed toward the light guide plate; and a second reflector protruding from the light converter toward the light source, the second reflector being configured to reflect the light generated by the light source toward the first reflector, and to reflect light reflected by the light converter toward the light guide plate.Type: ApplicationFiled: September 21, 2017Publication date: June 7, 2018Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Wook-Jae JEON, Young Chol LEE, Nae-Won JANG, Seung Hun CHAE, Jun Sung CHOI
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Publication number: 20180095218Abstract: Disclosed herein are a quantum dot unit having an improved structure for improving color reproducibility, a quantum dot sheet having the same, and a display device having the quantum dot unit or the quantum dot sheet. The display device includes a display panel configured to display an image, a light source provided to emit light to the display panel, a light guide plate provided to guide the light emitted from the light source to the display panel, and a quantum dot unit disposed between the light source and the light guide plate to change a wavelength of the light emitted from the light source and having ductility, wherein the quantum dot unit includes a glass fiber having a hollow portion and a quantum dot accommodated in the hollow portion.Type: ApplicationFiled: September 26, 2017Publication date: April 5, 2018Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Nae-Won JANG, Young Chol LEE, Byoung-Jin CHO, Seung Hun CHAE
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Publication number: 20180088413Abstract: A display apparatus having enhanced color reproduction, and a display apparatus including a light absorption sheet that absorbs light having a wavelength corresponding to yellow light and/or orange light in the light are provided. The display apparatus includes: a backlight unit; a liquid crystal panel configured to selectively block light emitted from the backlight according to an electric field; and a light absorption sheet disposed on a front side of the liquid crystal panel for absorbing light having a predetermined range of wavelength.Type: ApplicationFiled: September 14, 2017Publication date: March 29, 2018Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Nae-Won JANG, Young Chol LEE, Byoung-Jin CHO, Wook-Jae JEON, Seung Hun CHAE
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Patent number: 9885911Abstract: A display apparatus is provided. The display apparatus includes a liquid crystal display panel configured to display an image; a backlight unit located at the rear of the liquid crystal display panel, and including a plurality of light sources; a bottom chassis in which the backlight unit is positioned; and a reflector located in the bottom chassis, and configured to forwardly reflect light emitted from the plurality of light sources toward the liquid crystal display panel; and a reflection angle adjuster located in each corner of the reflector, and configured to reflect light emitted from the plurality of light sources in order to cause the reflected light to be incident toward corner areas of the liquid crystal display panel.Type: GrantFiled: March 13, 2015Date of Patent: February 6, 2018Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Sang Eun Lee, Dae Hee Lee, Young Chol Lee, Byoung Jin Cho
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Publication number: 20180004033Abstract: A display apparatus includes a bottom chassis, a display panel provided in front of the bottom chassis, and a cover film configured to cover the display panel and being fixable to the bottom chassis. With this configuration, a bezel may be minimized (e.g., reduced in size) or eliminated, and the display efficiency may be improved.Type: ApplicationFiled: June 28, 2017Publication date: January 4, 2018Inventors: Jun-Mo YOO, Seung Hun CHAE, Han Mi CHOI, Young Chol LEE, Nae-Won JANG, Jong Pil JEON, Yong Dok CHA, Jean HUR
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Patent number: 9857631Abstract: Disclosed herein are a reflecting plate, a backlight unit, and a display device using the backlight unit, and the display device includes one or more light sources; a reflecting plate to which light radiated from the one or more light sources is incident and having a reflecting surface reflecting the incident light; one or more selective light absorbing parts disposed on the reflecting surface and configured to selectively absorb a portion of the incident light; and a quantum dot sheet into which at least one of light emitted without being absorbed by the selective light absorbing part and light radiated from the light source is incident.Type: GrantFiled: October 29, 2015Date of Patent: January 2, 2018Assignee: Samsung Electronics Co., Ltd.Inventors: Chun Soon Park, Young Chol Lee, Seung Hun Chae, Sung Ho Choi, Hyung Jin Ha
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Publication number: 20170261813Abstract: The display apparatus reflects the light emitted from the light source to a display panel using a reflective member without a member such as a light guide plate. The reflective member is configured so that the light emitted from the light source can be provided uniformly and introduced uniformly to the display panel. Even if a board with the light source disposed at a side of the reflective member, the light emitted from the light source can be radiated substantially uniformly to the entire area of the display panel by the reflective surface of the reflective member.Type: ApplicationFiled: March 9, 2017Publication date: September 14, 2017Inventors: Yong Dok CHA, Jong Bin KIM, Jeong Shan NA, Young Chol LEE, Jae Hak CHO, Jean HUR
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Publication number: 20170205548Abstract: A display apparatus may include a back light unit including a light source and a selective light absorption sheet configured to absorb light of a predetermined wavelength range among light emitted from the light source and an image forming unit configured to transmit or block light emitted from the back light unit to form an image. The selective light absorption sheet may include a selective light absorption film configured to absorb light of a predetermined wavelength range among light emitted from the light source, at least one light blocking film configured to absorb at least one of UV light and IR light, and at least one barrier film configured to block at least one of oxygen and moisture.Type: ApplicationFiled: December 8, 2016Publication date: July 20, 2017Applicant: Samsung Electronics Co., Ltd.Inventors: Chun Soon PARK, Young Chol LEE, Tae-Hyeong KIM, Seung Hun CHAE, Sung Ho CHOI, Hyung Jin HA
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Publication number: 20170059131Abstract: Embodiments of the present disclosure relate to a direct-type reflective diffusion lens and a lighting installation including the reflective diffusion lens. The reflective diffusion lens includes a first reflective surface concave and having a longitudinal cross-section with a parabola shape or normal distribution shape to totally reflect incident light, a bottom surface comprising a light incident surface concave toward the first reflective surface, and a second reflective surface having a longitudinal cross-section inclined by a first angle with respect to a central axis of the lens to totally reflect incident light and a refractive surface connecting the first reflective surface with the bottom surface and comprising a first refractive surface having a longitudinal cross-section inclined by a second angle with respect to the central axis and a second refractive surface having a longitudinal cross-section inclined by a third angle with respect to the central axis.Type: ApplicationFiled: July 27, 2016Publication date: March 2, 2017Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Hyun CHOI, Cheoul Young KIM, Keun Bum LEE, Seung Jae LEE, Young Chol LEE, Yae Kyung SON
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Publication number: 20170017121Abstract: Disclosed herein are a reflecting plate, a backlight unit, and a display device using the backlight unit, and the display device includes one or more light sources; a reflecting plate to which light radiated from the one or more light sources is incident and having a reflecting surface reflecting the incident light; one or more selective light absorbing parts disposed on the reflecting surface and configured to selectively absorb a portion of the incident light; and a quantum dot sheet into which at least one of light emitted without being absorbed by the selective light absorbing part and light radiated from the light source is incident.Type: ApplicationFiled: October 29, 2015Publication date: January 19, 2017Inventors: Chun Soon PARK, Young Chol LEE, Seung Hun CHAE, Sung Ho CHOI, Hyung Jin HA
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Publication number: 20170017120Abstract: A display device including a backlight unit; and an image forming unit configured to transmit or block light emitted from the backlight unit to create an image, wherein the backlight unit includes a light source, a reflector sheet configured to absorb light having a predetermined wavelength range among light emitted from the light source, and to reflect non-absorbed light, and an optical sheet configured to absorb light having the predetermined wavelength range among the light emitted from the light source, and to transmit non-absorbed light.Type: ApplicationFiled: July 14, 2016Publication date: January 19, 2017Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Sung Ho CHOI, Yong-Hun KWON, Tae-Hyeong KIM, Chun Soon PARK, Young Chol LEE, Jong Cheol LEE, Jae Hak CHO, Seung Hun CHAE, Hyung Jin HA
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Patent number: 9523886Abstract: A backlight unit includes a light source and a lens unit optically coupled to the light source. A surface of the lens unit facing the light source includes areas coated with a reflective material for reflecting light from the light source away from the lens, and a transmissive area for transmitting light from the light source towards ran output surface of the lens. A display device includes a display panel, a light diffuser, the backlight unit and a reflective element, the backlight unit arranged between the light diffuser and the reflective element, and the display panel positioned opposite the backlight unit with respect to the light diffuser.Type: GrantFiled: March 20, 2014Date of Patent: December 20, 2016Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Byoung Jin Cho, Young Chol Lee, Young Man Ahn, Joon Seok Ahn, Nae Won Jang, Hyeong Sik Choi
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Publication number: 20160291231Abstract: Provided is a display apparatus including: a display panel; and a backlight unit configured to output light to the display panel, wherein the backlight unit includes: a light source configured to emit light having a particular color; a light guide plate (LGP) configured to scatter the light incident from the light source and configured to emit the scattered light through a light emitting surface; and an optical converter configured to convert the light emitted from the light source and including an optical conversion pattern disposed on an inner side from the display panel, the optical converter including an optical conversion material for converting color of light; and wherein the optical converter is provided at an edge portion of the backlight unit.Type: ApplicationFiled: August 10, 2015Publication date: October 6, 2016Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Nae-won JANG, Dae-hee LEE, Kye Hoon LEE, Young Chol LEE, Byoung-jin CHO, Sin-wook HYUNG
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Publication number: 20160216561Abstract: This is provided a display apparatus. The display apparatus a light source configured to emit a light; and a reflective diffusion lens configured to emit a light emitted from the light source to an upper direction or a lower direction with respect to a direction perpendicular to an optical axis of the light source through an incident surface, a lateral surface, and a reflective diffusion surface.Type: ApplicationFiled: January 27, 2016Publication date: July 28, 2016Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Young Chol LEE, Yae Kyung SON, Yong-hun KWON, Jong Cheol LEE, Jae Hak CHO