Patents by Inventor Sang-hyun Sohn
Sang-hyun Sohn 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: 11930670Abstract: A display device comprises a substrate; a driving transistor including a first active layer and a switching transistor including a second active layer, the first active layer and the second active layer being disposed on the substrate; a first gate insulating layer disposed on the first active layer of the driving transistor and the second active layer of the switching transistor; first and second gate electrodes disposed on the first gate insulating layer to overlap the first active layer of the driving transistor and the second active layer of the switching transistor, respectively; a first interlayer insulating layer disposed on the first gate electrode and the second gate electrode; and a second interlayer insulating layer disposed on the first interlayer insulating layer to overlap the first active layer without overlapping the second active layer in a plan view.Type: GrantFiled: May 6, 2021Date of Patent: March 12, 2024Assignees: Samsung Display Co., Ltd., Industry-University Cooperation Foundation Hanyang University ERICA CampusInventors: Sang Woo Sohn, Saeroonter Oh, Joon Seok Park, Young Joon Choi, Su Hyun Kim, Jun Hyung Lim
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Patent number: 11630343Abstract: A display apparatus includes a light source emitting light; a light guide plate having a first surface and a second surface, and spreading light emitted from the light source therein to emit light through the first surface; and a local dimming unit configured to pass or scatter light emitted through the second surface of the light guide plate according to a position. The local dimming unit may include: an electro-optical layer configured to which optical properties change according to an electric field; and a plurality of electrodes positioned on the same plane to generate the electric field.Type: GrantFiled: November 8, 2018Date of Patent: April 18, 2023Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Jin Hyun Cho, Nam Seok Roh, Sang Hyun Sohn, Jong Hee Han
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Patent number: 11367403Abstract: A display apparatus includes a plurality of light sources configured to emit light; a light guide plate having a first surface and a second surface, configured to spread light emitted from the plurality of light sources therein to emit light through the first surface; and a local dimming unit configured to reflect or scatter light emitted through the second surface of the light guide plate according to a location. The local dimming unit may include an electro-optical layer configured to change optical properties according to an electric field; a plurality of electrodes located on the same plane, configured to generate the electric field; and a controller configured to change a voltage applied to the plurality of electrodes according to an image.Type: GrantFiled: November 8, 2018Date of Patent: June 21, 2022Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Jin Hyun Cho, Nam Seok Roh, Sang Hyun Sohn, Jong Hee Han
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Publication number: 20210373386Abstract: A display apparatus includes a light source emitting light; a light guide plate having a first surface and a second surface, and spreading light emitted from the light source therein to emit light through the first surface; and a local dimming unit configured to pass or scatter light emitted through the second surface of the light guide plate according to a position. The local dimming unit may include: an electro-optical layer configured to which optical properties change according to an electric field; and a plurality of electrodes positioned on the same plane to generate the electric field.Type: ApplicationFiled: November 8, 2018Publication date: December 2, 2021Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Jin Hyun CHO, Nam Seok ROH, Sang Hyun SOHN, Jong Hee HAN
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Publication number: 20210366410Abstract: The display apparatus may comprise: a plurality of light sources for emitting light; a light guide plate, having a first surface and a second surface, for internally diffusing the light emitted from the plurality of light sources and emitting through the first surface; and a local dimming unit for reflecting or scattering, on the basis of location, the light emitted from the second surface of the light guide plate. Moreover, the local dimming unit may comprise: an electro-optic layer, the optical properties of which vary in accordance with an electric field; a plurality of electrodes located on the same plane and generating the electric field; and a control unit for varying the voltage applied to the plurality of electrodes in accordance with an image.Type: ApplicationFiled: November 8, 2018Publication date: November 25, 2021Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Jin Hyun CHO, Nam Seok ROH, Sang Hyun SOHN, Jong Hee HAN
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Patent number: 11099428Abstract: Disclosed herein is a display apparatus. The display apparatus includes a backlight unit emitting light forward, a liquid crystal panel disposed in front of the backlight unit and having a front polarizing film, and a diffusion film disposed in front of the liquid crystal panel, wherein the diffusion film includes a first refraction layer having a lens portion projecting forward, a second refraction layer disposed in front of the first refraction layer, a retardation member disposed at a front end of the lens portion, and a film polarizing layer disposed in front of the retardation member.Type: GrantFiled: August 30, 2018Date of Patent: August 24, 2021Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Jin Hyun Cho, Go Hyun Kim, Sang Hyun Sohn, Jong Hee Han
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Publication number: 20210200032Abstract: Disclosed herein is a display apparatus. The display apparatus includes a backlight unit emitting light forward, a liquid crystal panel disposed in front of the backlight unit and having a front polarizing film, and a diffusion film disposed in front of the liquid crystal panel, wherein the diffusion film includes a first refraction layer having a lens portion projecting forward, a second refraction layer disposed in front of the first refraction layer, a retardation member disposed at a front end of the lens portion, and a film polarizing layer disposed in front of the retardation member.Type: ApplicationFiled: August 30, 2018Publication date: July 1, 2021Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Jin Hyun CHO, Go Hyun KIM, Sang Hyun SOHN, Jong Hee HAN
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Patent number: 10877305Abstract: Provided is a display apparatus including a light source configured to emit light; a light guide plate configured to diffuse and emit light emitted from the light source; and a local dimming portion configured to pass or scatter light emitted from the light guide plate. The local dimming portion may include an electro-optical material and a plurality of grains having refractive index that changes based on an electric field.Type: GrantFiled: August 7, 2019Date of Patent: December 29, 2020Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Jin Hyun Cho, Nam Seok Roh, Won Geun Ryu, Sang Hyun Sohn, Hyo Gun Lee
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Patent number: 10687049Abstract: A back light apparatus includes a plurality of light sources configured to generate light; and a light guide part, wherein the light guide part includes a light guide plate configured to change a path of the light; a first pattern part disposed on a first surface of the light guide plate and configured to emit the light in a first direction; and a second pattern part disposed on a second surface of the light guide plate and configured to emit the light in a second direction.Type: GrantFiled: September 12, 2017Date of Patent: June 16, 2020Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Sang Hyun Sohn, Dae-Hee Lee
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Patent number: 10606118Abstract: A display apparatus and a method of controlling the same are disclosed. The display apparatus includes: a light source configured to emit light having a wavelength less than or equal to a predetermined level; a waveguide plate having a slope pattern that allows the light emitted from the light source to be output to a left side or a right side about a vertical direction of an optical axis of the light source; and a display panel comprising a plurality of pixels, each of the plurality of pixels comprising a white sub pixel configured to transmit the light output from the waveguide plate.Type: GrantFiled: September 21, 2017Date of Patent: March 31, 2020Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Sang Hyun Sohn, Sang Yeon Shin
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Publication number: 20200064664Abstract: Provided is a display apparatus including a light source configured to emit light; a light guide plate configured to diffuse and emit light emitted from the light source; and a local dimming portion configured to pass or scatter light emitted from the light guide plate. The local dimming portion may include an electro-optical material and a plurality of grains having refractive index that changes based on an electric field.Type: ApplicationFiled: August 7, 2019Publication date: February 27, 2020Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Jin Hyun CHO, Nam Seok ROH, Won Geun RYU, Sang Hyun SOHN, Hyo Gun LEE
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Patent number: 10527772Abstract: A display device includes a display panel; at least one light source package configured to emit light; and a light guide plate configured to receive the light emitted by the light source package and guide the light toward the display panel, wherein the at least one light source package includes: a light source configured to emit the light; a light converter disposed between the light source and the light guide plate, and configured to convert one or more properties of the light emitted by the light source; and a package housing in which the light source is disposed and including one side with an opening in which the light converter is disposed, the package housing including a unit support surface configured to support a side surface of the light converter.Type: GrantFiled: October 30, 2017Date of Patent: January 7, 2020Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Sang Hyun Sohn, Joon Seok Ahn, Dae Hee Lee
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Patent number: 10317740Abstract: A display panel and a display apparatus including the display panel are provided. The display panel includes: a light transmitter disposed on a first pixel electrode and a light converting unit disposed on a second pixel electrode. A portion of the light converting unit extends toward the light transmitter and covers a part of the first pixel electrode.Type: GrantFiled: September 22, 2017Date of Patent: June 11, 2019Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Kye Hoon Lee, Sang Hyun Sohn
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Publication number: 20190163010Abstract: Disclosed is a reflective display device including: two plates arranged to be separated from each other; a liquid crystal layer arranged between the two plates; a reflective plate arranged under the liquid crystal layer; and a color filter arranged on the top of the liquid crystal layer and configured to selectively transmit a predetermined color of light, wherein the color filter has a bandwidth wider than a half width of light that passes the color filter. In embodiments of the present disclosure, the reflectivity is increased by widening a passage bandwidth of the color filter instead of adjusting the thickness of the color filter, so that the power efficiency is improved and an image with high color purity may be expressed. Furthermore, it is possible to select between reflective mode and transmissive mode depending on the ambient environment, thereby providing goo quality of images to the user in a more stable manner.Type: ApplicationFiled: June 1, 2017Publication date: May 30, 2019Inventors: Sang Hyun SOHN, Ki Hyung KANG
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Patent number: 10120200Abstract: A display apparatus includes: a backlight assembly configured to emit light; and a display panel configured to display a two-dimensional (2D) image or a three-dimensional (3D) image using the light, wherein the backlight assembly includes: a first backlight unit configured to emit light for creating the 2D image; a second backlight unit configured to emit light for creating the 3D image; and a first polarizing panel disposed between the first backlight unit and the second backlight unit, and configured to prevent at least a portion of leakage light leaking from the second backlight unit from being incident to the second backlight unit.Type: GrantFiled: June 3, 2016Date of Patent: November 6, 2018Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Dae Kuen Yang, Keun-Bae Jeon, Sang Hyun Sohn
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Patent number: 10012782Abstract: Disclosed herein are a backlight apparatus and a display apparatus having a light guide plate that includes light guide patterns in a waveform shape.Type: GrantFiled: August 7, 2015Date of Patent: July 3, 2018Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Won Yong Lee, Sang Hyun Sohn
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Publication number: 20180172894Abstract: A display device includes a display panel; at least one light source package configured to emit light; and a light guide plate configured to receive the light emitted by the light source package and guide the light toward the display panel, wherein the at least one light source package includes: a light source configured to emit the light; a light converter disposed between the light source and the light guide plate, and configured to convert one or more properties of the light emitted by the light source; and a package housing in which the light source is disposed and including one side with an opening in which the light converter is disposed, the package housing including a unit support surface configured to support a side surface of the light converter.Type: ApplicationFiled: October 30, 2017Publication date: June 21, 2018Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Sang Hyun SOHN, Joon Seok AHN, Dae Hee LEE
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Publication number: 20180157102Abstract: A display apparatus and a method of controlling the same are disclosed. The display apparatus includes: a light source configured to emit light having a wavelength less than or equal to a predetermined level; a waveguide plate having a slope pattern that allows the light emitted from the light source to be output to a left side or a right side about a vertical direction of an optical axis of the light source; and a display panel comprising a plurality of pixels, each of the plurality of pixels comprising a white sub pixel configured to transmit the light output from the waveguide plate.Type: ApplicationFiled: September 21, 2017Publication date: June 7, 2018Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Sang Hyun SOHN, Sang Yeon SHIN
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Publication number: 20180160107Abstract: A back light apparatus includes a plurality of light sources configured to generate light; and a light guide part, wherein the light guide part includes a light guide plate configured to change a path of the light; a first pattern part disposed on a first surface of the light guide plate and configured to emit the light in a first direction; and a second pattern part disposed on a second surface of the light guide plate and configured to emit the light in a second direction.Type: ApplicationFiled: September 12, 2017Publication date: June 7, 2018Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Sang Hyun SOHN, Dae-Hee LEE
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Publication number: 20180113341Abstract: A display panel and a display apparatus including the display panel are provided. The display panel includes: a light transmitter disposed on a first pixel electrode and a light converting unit disposed on a second pixel electrode. A portion of the light converting unit extends toward the light transmitter and covers a part of the first pixel electrode.Type: ApplicationFiled: September 22, 2017Publication date: April 26, 2018Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Kye Hoon LEE, Sang Hyun SOHN