Patents by Inventor Dong-Wook Choi
Dong-Wook Choi 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: 12200969Abstract: A display device includes: a display panel including sub-pixels and a heat dissipation pad electrically connected to at least one of the sub-pixels; a heat dissipation sheet on the heat dissipation pad; and an insulating heat dissipation adhesive layer between the heat dissipation sheet and the heat dissipation pad to adhere the heat dissipation sheet and the heat dissipation pad.Type: GrantFiled: November 18, 2019Date of Patent: January 14, 2025Assignee: Samsung Display Co., Ltd.Inventors: Sejachul Hwang, Do Youb Kim, Dong Wook Choi
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Patent number: 11727848Abstract: A display device includes a display panel including a plurality of pixels, and a panel driver configured to receive input data, and to drive the display panel based on the input data. The panel driver includes a partial still image detector configured to detect a still image data portion in the input data by determining whether at least a portion of the input data represents a still image, and a command decoder configured to extract command data from the input data by decoding the still image data portion in which the command data are encoded.Type: GrantFiled: July 23, 2020Date of Patent: August 15, 2023Assignee: Samsung Display Co., Ltd.Inventors: Hae-Kwan Seo, Dong-Wook Choi, Se Ja Chul Hwang
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Publication number: 20230217694Abstract: The present disclosure is directed to a display apparatus having a high resolution with improved light efficiency. In one aspect, such display apparatus includes a substrate, a light emitting element formed on the substrate and configured to emit light of different colors via a plurality of sub-pixels, and a partial color filter layer formed on a first subset of the plurality of sub-pixels configured to output at least two of the different colors.Type: ApplicationFiled: December 23, 2022Publication date: July 6, 2023Applicant: LG DISPLAY CO., LTD.Inventors: Ho-Jin KIM, Han-Sun PARK, Pu-Reum KIM, Dong-Wook CHOI
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Publication number: 20220077419Abstract: A display device includes: a display panel including sub-pixels and a heat dissipation pad electrically connected to at least one of the sub-pixels; a heat dissipation sheet on the heat dissipation pad; and an insulating heat dissipation adhesive layer between the heat dissipation sheet and the heat dissipation pad to adhere the heat dissipation sheet and the heat dissipation pad.Type: ApplicationFiled: November 18, 2019Publication date: March 10, 2022Inventors: Sejachul HWANG, Do Youb KIM, Dong Wook CHOI
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Publication number: 20210359275Abstract: An optical film includes a polarizing layer including a polymer dyed with iodine, a phase-retardation layer disposed under the polarizing layer, and an inorganic barrier layer including a non-polar inorganic material. The inorganic barrier layer is disposed on at least a surface of the polarizing layer, has a water vapor transmission rate (WVTR) equal to or less than about 100 g/day·m2, and has a thickness equal to or less than about 5 ?m. A display device comprising the optical film is also provided.Type: ApplicationFiled: February 18, 2021Publication date: November 18, 2021Applicant: Samsung Display Co., LTD.Inventors: Beong-Hun BEON, Duk Jin LEE, Woo Suk JUNG, Dong-Wook CHOI
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Publication number: 20210201746Abstract: A display device includes a display panel including a plurality of pixels, and a panel driver configured to receive input data, and to drive the display panel based on the input data. The panel driver includes a partial still image detector configured to detect a still image data portion in the input data by determining whether at least a portion of the input data represents a still image, and a command decoder configured to extract command data from the input data by decoding the still image data portion in which the command data are encoded.Type: ApplicationFiled: July 23, 2020Publication date: July 1, 2021Inventors: Hae-Kwan SEO, Dong-Wook CHOI, Se Ja Chul HWANG
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Patent number: 9913393Abstract: An energy storage system is provided. The system includes an energy storage device including at least one battery module, a power adjuster that adjusts power of the energy storage device, a controller that controls the energy storage device and the power adjuster, a rack that accommodates the energy storage device, the power adjuster and the controller, the rack including at least one stationary coupler fixed to a movable unit and at least one support device that supports the energy storage system against the moveable unit.Type: GrantFiled: January 13, 2015Date of Patent: March 6, 2018Assignee: LG CNS CO., LTD.Inventors: Dong Wook Choi, Dong Chul Ko, Sang Hyub Kim, Tae Hyoung Ryu, Byoung Seung Lee
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Publication number: 20180059404Abstract: An electronic device and a method of controlling light transmittance of the same. The electronic device includes: a light source which provides light; and a variable light control member which adjusts transmittance of the provided light. The variable light control member includes: a base substrate including a plurality of unit areas; a thin-film transistor (TFT) which is disposed on the base substrate; and a deformable lens layer having lens portion disposed on the base substrate in association with at least one of the unit areas, the lens portion being deformable by a control signal of the TFT.Type: ApplicationFiled: November 6, 2017Publication date: March 1, 2018Inventors: Jong Ho CHONG, Dong Wook CHOI
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Patent number: 9829701Abstract: A flexible display device includes a flexible display panel, a correction panel, and a flexible printed circuit board. The correction panel includes a shape memory polymer layer and a driver. The shape memory polymer layer includes microlenses and the driver control the microlenses. The flexible printed circuit board connects the driver to a driving circuit board.Type: GrantFiled: September 3, 2015Date of Patent: November 28, 2017Assignee: Samsung Display Co., Ltd.Inventors: Jong Ho Chong, Dong-wook Choi
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Patent number: 9804637Abstract: A portable display device including a display unit, the display unit including a light-emitting surface that displays an image and a non-light-emitting surface opposite to the light-emitting surface; a drive unit, the drive unit controlling the display unit; and a flexible film, the flexible film electrically connecting the display unit and the drive unit, wherein the drive unit includes a first surface on which the flexible film is disposed, and a second surface opposite to the first surface, and wherein the portable display device is embodied in a first folding mode in which the flexible film is bent in such a way that the non-light-emitting surface and the second surface face each other, or a second folding mode in which the flexible film is bent in such a way that the light-emitting surface and the first surface face each other.Type: GrantFiled: January 27, 2015Date of Patent: October 31, 2017Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Dong-wook Choi, Minjae Kim, Sun A Yang, Jongho Chong
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Patent number: 9772656Abstract: A flexible display device includes a flexible display panel to display an image, a support panel including a shape memory polymer layer and a driver to control a shape of the shape memory polymer layer, and a flexible PCB connecting the driver to a driving circuit board. The support panel is coupled to a rear side of the display panel.Type: GrantFiled: September 21, 2015Date of Patent: September 26, 2017Assignee: Samsung Display Co., Ltd.Inventors: Jong Ho Chong, Dong-Wook Choi
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Publication number: 20160216819Abstract: A touch-enabled display device includes a display panel for displaying an image, a touch sensitive region being disposed at a first surface of the display panel, a window on the display panel and covering the touch sensitive region, and a protecting layer on the window, the protecting layer including a shape memory polymer layer.Type: ApplicationFiled: August 4, 2015Publication date: July 28, 2016Inventors: Dong-Wook CHOI, Jong Ho CHONG
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Publication number: 20160209877Abstract: A flexible display device includes a flexible display panel to display an image, a support panel including a shape memory polymer layer and a driver to control a shape of the shape memory polymer layer, and a flexible PCB connecting the driver to a driving circuit board. The support panel is coupled to a rear side of the display panel.Type: ApplicationFiled: September 21, 2015Publication date: July 21, 2016Inventors: Jong Ho CHONG, Dong-Wook CHOI
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Publication number: 20160202476Abstract: A flexible display device includes a flexible display panel, a correction panel, and a flexible printed circuit board. The correction panel includes a shape memory polymer layer and a driver. The shape memory polymer layer includes microlenses and the driver control the microlenses. The flexible printed circuit board connects the driver to a driving circuit board.Type: ApplicationFiled: September 3, 2015Publication date: July 14, 2016Inventors: Jong Ho CHONG, Dong-wook CHOI
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Patent number: 9317067Abstract: A display device may include a foldable display member. The foldable display member may include a first portion, a second portion, and a bendable portion. The first portion may be connected through the bendable portion to the second portion. The display device may further include a first controllable member that may overlap the bendable portion. The display device may further include a control unit connected to the first controllable member and configured to provide a first signal to control a size of the first controllable member according to a magnitude of an angle between the first portion and the second portion.Type: GrantFiled: March 19, 2014Date of Patent: April 19, 2016Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Dong-Wook Choi, Jeong-Eun Seo, Hyun-Ah Suh, Young-Jin Lee
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Patent number: 9298221Abstract: A method of displaying folding information includes evaluating a folded state of a foldable display apparatus, measuring a folding accumulation time that indicates an amount of time that the folded state is maintained, determining the folding information based on the folding accumulation time, and displaying the folding information on a display panel of the foldable display apparatus.Type: GrantFiled: April 28, 2014Date of Patent: March 29, 2016Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Dong-Wook Choi, Byeong-Hwa Choi, Sung-Su Hong
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Publication number: 20160077328Abstract: Provided are an electronic device and a method of controlling light transmittance of the same. The electronic device includes: a light source which provides light; and a variable light control member which adjusts transmittance of the provided light. The variable light control member includes: a base substrate including a plurality of unit areas; a thin-film transistor (TFT) which is disposed on the base substrate; and a deformable lens layer having lens portion disposed on the base substrate in association with at least one of the unit areas, the lens portion being deformable by a control signal of the TFT.Type: ApplicationFiled: March 31, 2015Publication date: March 17, 2016Inventors: Jong Ho CHONG, Dong Wook CHOI
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Publication number: 20160048168Abstract: A portable display device including a display unit, the display unit including a light-emitting surface that displays an image and a non-light-emitting surface opposite to the light-emitting surface; a drive unit, the drive unit controlling the display unit; and a flexible film, the flexible film electrically connecting the display unit and the drive unit, wherein the drive unit includes a first surface on which the flexible film is disposed, and a second surface opposite to the first surface, and wherein the portable display device is embodied in a first folding mode in which the flexible film is bent in such a way that the non-light-emitting surface and the second surface face each other, or a second folding mode in which the flexible film is bent in such a way that the light-emitting surface and the first surface face each other.Type: ApplicationFiled: January 27, 2015Publication date: February 18, 2016Inventors: Dong-wook CHOI, Minjae KIM, Sun A YANG, Jongho CHONG
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Publication number: 20160018678Abstract: An organic light emitting display device includes a substrate, a display structure disposed on a first face of the substrate, and a light transmission controlling member disposed on a second face of the substrate opposed to the first face, in which the light transmission controlling member includes a shape memory polymer configured to change its shape to control an amount of an external light passing through the light transmission controlling member.Type: ApplicationFiled: January 22, 2015Publication date: January 21, 2016Inventors: Dong-Wook CHOI, Jong-Ho CHONG
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Publication number: 20150343970Abstract: An energy storage system is provided. The system includes an energy storage device including at least one battery module, a power adjuster that adjusts power of the energy storage device, a controller that controls the energy storage device and the power adjuster, a rack that accommodates the energy storage device, the power adjuster and the controller, the rack including at least one stationary coupler fixed to a movable unit and at least one support device that supports the energy storage system against the moveable unit.Type: ApplicationFiled: January 13, 2015Publication date: December 3, 2015Applicant: LG CNS CO., LTD.Inventors: Dong Wook CHOI, Dong Chul KO, Sang Hyub KIM, Tae Hyoung RYU, Byoung Seung LEE