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公开(公告)号：US10921618B2
公开(公告)日：2021-02-16
申请号：US16170573
申请日：2018-10-25
发明人： Duhyun Lee , Ruzan Sokhoyan , Yu-Jung Lu , Ghazaleh Kafaie Shirmanesh , Harry Atwater , Ragip Pala , Chanwook Baik
摘要： An optical modulating device may include a plurality of quantum dot (QD)-containing layers having QDs and a plurality of refractive index change layers. The QD-containing layers may be disposed between the refractive index change layers, respectively. The optical modulating device may be configured to modulate light-emission characteristics of the plurality of QD-containing layers. At least two of the QD-containing layers may have different central emission wavelengths. At least two of the plurality of refractive index change layers may include different materials or have different carrier densities.
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公开(公告)号：US10571332B2
公开(公告)日：2020-02-25
申请号：US15916914
申请日：2018-03-09
发明人： Kyungsang Cho , Chanwook Baik
摘要： A light filter includes a plurality of spectrum modulation portions, each having a different thicknesses or a different mixing ratio of materials thereof. Each of the plurality of spectrum modulation portions has a different transmittance spectrum.
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公开(公告)号：US10387709B2
公开(公告)日：2019-08-20
申请号：US15062347
申请日：2016-03-07
发明人： Jisoo Kyoung , Chanwook Baik , Jaesoong Lee
IPC分类号： G06K9/00
摘要： A security device using compressive imaging technology is provided. The security device includes a supporter configured to support a recognition object, a light source configured to irradiate light towards the recognition object, a mask configured to code light that is reflected from the recognition object, the coded light corresponding to an image of the recognition object, and a light receiver and processor configured to compress the coded light into a compressed image, and store the compressed image.
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公开(公告)号：US09577123B2
公开(公告)日：2017-02-21
申请号：US14535952
申请日：2014-11-07
发明人： Unjeong Kim , Younggeun Roh , Jineun Kim , Soojin Park , Yeonsang Park , Chanwook Baik , Seungmin Yoo , Jaesoong Lee , Sangmo Cheon
IPC分类号： H01L31/0352 , H01L31/028 , H01L31/0232
CPC分类号： H01L31/02327 , Y10T428/218 , Y10T428/24851
摘要： Provided are nanostructures and optical devices having the nanostructures. The nanostructure may include a carbon nanomaterial layer, a nanopattern formed on the carbon nanomaterial layer, and a metal layer formed on a surface of the nanopattern. The nanostructure may be formed in a ring shape, and the metal layer may include a plurality of metal layers formed of different metals.
摘要翻译： 提供具有纳米结构的纳米结构和光学器件。 纳米结构可以包括碳纳米材料层，形成在碳纳米材料层上的纳米图案，以及形成在纳米图案的表面上的金属层。 纳米结构可以形成为环形，并且金属层可以包括由不同金属形成的多个金属层。
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公开(公告)号：US20220262968A1
公开(公告)日：2022-08-18
申请号：US17459686
申请日：2021-08-27
发明人： Chanwook Baik , Kyungsang Cho , Hojung Kim , Yooseong Yang
IPC分类号： H01L31/0384 , H01L31/112 , H01L31/113 , H01L27/146 , H01L31/0216
摘要： An opto-electronic device includes a base portion, a first electrode and a second electrode formed on an upper surface of the base portion apart from each other, a quantum dot layer, and a bank structure. The quantum dot layer is between the first electrode and the second electrode on the base portion and includes a plurality of quantum dots. The bank structure covers at least partial regions of the first electrode and the second electrode, defines a region where the quantum dot layer is formed, and is formed of an inorganic material.
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公开(公告)号：US11302740B2
公开(公告)日：2022-04-12
申请号：US16930574
申请日：2020-07-16
发明人： Kyungsang Cho , Chanwook Baik , Hojung Kim
IPC分类号： H01L31/0352 , H01L31/0384 , H01L31/112 , H01L27/146
摘要： Provided is an opto-electronic device having low dark noise and a high signal-to-noise ratio. The opto-electronic device may include: a first semiconductor layer doped to have a first conductivity type; a second semiconductor layer disposed on an upper surface of the first semiconductor layer and doped to have a second conductivity type electrically opposite to the first conductivity type; a transparent matrix layer disposed on an upper surface of the second semiconductor layer; a plurality of quantum dots arranged to be in contact with the transparent matrix layer; and a first electrode provided on a first side of the transparent matrix layer and a second electrode provided on a second side of the transparent matrix layer opposite to the first side, wherein the first electrode and the second electrode are electrically connected to the second semiconductor layer.
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公开(公告)号：US11204514B2
公开(公告)日：2021-12-21
申请号：US16156628
申请日：2018-10-10
发明人： Duhyun Lee , Ruzan Sokhoyan , Yu-Jung Lu , Ghazaleh Kafaie Shirmanesh , Harry Atwater , Ragip Pala , Chanwook Baik
IPC分类号： G02F1/03 , G02F1/017 , G02F1/13357 , G02F1/015
摘要： Provided is a quantum dot (QD) light modulator and an apparatus including the QD light modulator. The QD light modulator may include a QD-containing layer including QDs having light-emission characteristics, a refractive index change layer arranged adjacent to the QD-containing layer, and a reflector arranged facing the QD-containing layer. The refractive index change layer may include a carrier density change area in which a carrier density changes, and the carrier density change area may be arranged adjacent to the QD-containing layer. The light-emission characteristics of the QD-containing layer may be modulated according to a change in a property of the refractive index change layer. The QD light modulator may further include a nano-antenna structure arranged on the QD-containing layer.
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公开(公告)号：US10568527B2
公开(公告)日：2020-02-25
申请号：US14844437
申请日：2015-09-03
发明人： Youngzoon Yoon , Jaesoong Lee , Jisoo Kyoung , Younggeun Roh , Yeonsang Park , Chanwook Baik
IPC分类号： A61B5/021 , A61B5/0295 , A61B5/00 , A61B5/026 , A61B5/024
摘要： A method of monitoring a blood pressure includes: emitting a laser to a blood vessel in a body part; detecting, from the body part, laser speckles caused by scattering of the emitted laser; obtaining a bio-signal indicating a change in a volume of the blood vessel by using the detected laser speckles; and estimating a blood pressure based on the obtained bio-signal.
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公开(公告)号：US10529879B2
公开(公告)日：2020-01-07
申请号：US15990174
申请日：2018-05-25
发明人： Kyungsang Cho , Sangyeol Lee , Chanwook Baik
IPC分类号： H01L31/0352 , H01L31/0224 , H01L31/0336 , H01L31/09 , H01L31/112 , H01L31/113
摘要： A photoelectric conversion device may include a substrate, a photoactive layer disposed on the substrate, and a first electrode and a second electrode respectively connected to corresponding edges of the photoactive layer. The photoactive layer may include a first oxide semiconductor layer on the substrate, and a plurality of quantum dot layers and a plurality of second oxide semiconductor layers that are alternately formed on the first oxide semiconductor layer.
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公开(公告)号：US10459258B2
公开(公告)日：2019-10-29
申请号：US15668297
申请日：2017-08-03
发明人： Chanwook Baik , Changwon Lee , Heejeong Jeong , Jaekwan Kim , Byonggwon Song , Jeongyub Lee
摘要： A method of designing a meta optical device is provided. The method includes: setting, via a processor, design data for arrangement and dimensions of a nanostructure of the meta optical device, according to a function to be implemented by the meta optical device; obtaining a phase change graph with respect to a change in the dimensions; setting a shape dimension region with phase defect in the phase change graph; and substituting a shape dimension with phase defect, which is included in the shape dimension region with phase defect among the dimensions included in the design data, with a substitution value that is outside the shape dimension region with phase defect. Accordingly, a meta optical device having no phase defect is implemented.
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