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公开(公告)号：US11275444B2
公开(公告)日：2022-03-15
申请号：US16976950
申请日：2020-01-21
Inventor： Sung Ryul Yun , Suntak Park , Seongcheol Mun , Bong Je Park , Seung Koo Park , JaeWoong Yoon , Inwook Hwang , Jeong Muk Lim
Abstract: The present invention relates to a shape-variable electronic device and an operation method of the same and, more specifically, the shape-variable electronic device includes: a substrate having a cell region; a light source unit on the cell region; and a flexible layer vertically spaced apart from the light source unit. The flexible layer includes an actuator part that changes a shape of the flexible layer, and the actuator part includes: a photo-thermal response part that receives light emitted from the light source unit and generates thermal energy; a deformation part which receives the thermal energy from the photo-thermal response part and of which mechanical stiffness is reduced; and a top electrode and a bottom electrode on both surfaces of the deformation part, respectively.
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公开(公告)号：US11921929B2
公开(公告)日：2024-03-05
申请号：US18106650
申请日：2023-02-07
Inventor： Sung Ryul Yun , Seung Koo Park , Inwook Hwang , Seongcheol Mun , Mi Jeong Choi
CPC classification number: G06F3/016 , F03G7/016 , G05D5/02 , H04N13/393 , G06F1/163 , G06F1/1652 , G06V40/1306 , G09B21/003
Abstract: Provided is a stereoscopic surface display device including a stereoscopic display unit having a cell area, wherein the stereoscopic display unit includes a first flexible layer, a first optical waveguide and a first optical output unit in the first flexible layer, wherein the first optical output unit are disposed in the cell area, a first light source disposed on a side of the stereoscopic display unit, wherein the first optical waveguide connects the first light source and the first optical output unit, a first photothermal response layer on the first flexible layer, wherein the first photothermal response layer is configured to receive output light emitted from the first optical output unit and emit thermal energy, and a shape deformation layer on the first photothermal response layer, wherein the shape deformation layer is configured to generate bending deformation by receiving the thermal energy from the first photothermal response layer.
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公开(公告)号：US11286964B2
公开(公告)日：2022-03-29
申请号：US17116665
申请日：2020-12-09
Inventor： Seongcheol Mun , Sungryul Yun , Jeong Muk Lim , Inwook Hwang
Abstract: Provided is a soft actuator. The soft actuator includes a first bistable polymer layer, a second bistable polymer layer on the first bistable polymer layer, a first flexible electrode layer on an upper surface of the second bistable polymer layer, a second flexible electrode layer between the first bistable polymer layer and the second bistable polymer layer, a first light absorption heating layer disposed on the first flexible electrode layer and configured to increase a temperature when light is absorbed, and a first voltage supply unit, wherein the first voltage supply unit is electrically connected to the first flexible electrode layer and the second flexible electrode layer.
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公开(公告)号：US11231783B2
公开(公告)日：2022-01-25
申请号：US16990520
申请日：2020-08-11
Inventor： Inwook Hwang
Abstract: Provided is an apparatus for generating a vibrotactile sensation. The apparatus for generating a vibrotactile sensation includes a light source generating light, a vibration layer generating a vibration by receiving the light, a vibration detection unit disposed adjacent to the vibration layer to detect a vibration signal of the vibration layer, and a control unit connected to the vibration detection unit to determine the vibration of the vibration layer by using the vibration signal. Here, the vibration layer includes a thermo-elastic layer that has a first thermal expansion coefficient and a photo-thermal conversion layer that is disposed on the thermo-elastic layer and has a second thermal expansion coefficient less than the first thermal expansion coefficient.
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