公开(公告)号：US20240121375A1

公开(公告)日：2024-04-11

申请号：US18482457

申请日：2023-10-06

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Sung Ryul YUN ,  Seongcheol MUN ,  Inwook HWANG ,  Mi Jeong CHOI

IPC: H04N13/32 ,  G09B21/00 ,  H04N13/312

CPC classification number: H04N13/32 ,  G09B21/004 ,  H04N13/312

Abstract: The present disclosure relates to a stereoscopic surface display device, and more particularly, to a stereoscopic surface display device including: a light source unit including a plurality of optical elements; and a stereoscopic display unit disposed on the light source unit. The stereoscopic display unit includes: a polymer layer; and a light absorption layer buried in the polymer layer. The stereoscopic display unit includes a plurality of cell areas arranged in two-dimension, the light absorption layer is disposed in the plurality of cell areas, the plurality of optical elements vertically overlap the plurality of cell areas, respectively, and each of the plurality of cell areas has a stereoscopic shape.

公开(公告)号：US20210048887A1

公开(公告)日：2021-02-18

申请号：US16990520

申请日：2020-08-11

Applicant: Electronics and Telecommunications Research Institute

Inventor： Inwook HWANG

IPC: G06F3/01 ,  H03K17/96

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.

公开(公告)号：US20240429838A1

公开(公告)日：2024-12-26

申请号：US18744800

申请日：2024-06-17

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Sung Ryul YUN ,  Jung-Hwan YOUN ,  Seung Yeon JANG ,  Inwook HWANG ,  Seongcheol MUN ,  Mi Jeong CHOI

IPC: H02N2/18 ,  H10N30/857

Abstract: Provided is an actuator system which includes an electroactive polymer film, and a spring surrounded by the electroactive polymer film. At least a portion of the spring is disposed inside the electroactive polymer film.

公开(公告)号：US20240421729A1

公开(公告)日：2024-12-19

申请号：US18734084

申请日：2024-06-05

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Sung Ryul YUN ,  Inwook HWANG ,  Seongcheol MUN ,  Jung-Hwan YOUN

IPC: H02N10/00 ,  F03G7/06 ,  G06F3/01 ,  H01L27/15

Abstract: Provided are a shape-variable electronic device and an operation method of the same. More specifically, the shape-variable electronic device includes a substrate having a cell region, a light source on the cell region, a flexible layer provided vertically spaced apart from the light source part, a chamber between the light source part and the flexible layer, and a pressure control unit configured to adjust an internal pressure of the chamber. The flexible layer includes a photo-thermal response part configured to emit thermal energy by receiving light emitted from the light source part, and a deformation part of which mechanical stiffness is decreased by receiving the thermal energy from the photo-thermal response part.

公开(公告)号：US20210180620A1

公开(公告)日：2021-06-17

申请号：US17116665

申请日：2020-12-09

Applicant: Electronics and Telecommunications Research Institute

Inventor： Seongcheol MUN ,  Sungryul YUN ,  Jeong Muk LIM ,  Inwook HWANG

IPC: F15B15/10

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.

公开(公告)号：US20230269362A1

公开(公告)日：2023-08-24

申请号：US18106650

申请日：2023-02-07

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Sung Ryul YUN ,  Seung Koo PARK ,  Inwook HWANG ,  Seongcheol MUN ,  Mi Jeong CHOI

IPC: H04N13/393 ,  G05D5/02 ,  F03G7/00

CPC classification number: H04N13/393 ,  G05D5/02 ,  F03G7/016 ,  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.

公开(公告)号：US20230138999A1

公开(公告)日：2023-05-04

申请号：US17975080

申请日：2022-10-27

Applicant: Electronics and Telecommunications Research Institute

Inventor： Sung Ryul YUN ,  Inwook HWANG ,  Hyung Cheol SHIN ,  Seongcheol MUN ,  Mi Jeong CHOI

IPC: A61H1/02 ,  H02N10/00

Abstract: Provided is a soft actuator. The soft actuator includes a first support body, a second support body spaced apart from the first support body in a first direction, a yarn structure having one end coupled to the first support body and the other end coupled to the second support body, and a light source part spaced apart from the yarn structure in a second direction crossing the first direction. The yarn structure includes a polymer layer having a coil spring shape extending in the first direction and a light absorption layer configured to surround an outer surface of the polymer layer.

公开(公告)号：US20210365121A1

公开(公告)日：2021-11-25

申请号：US16976950

申请日：2020-01-21

Applicant: Electronics and Telecommunications Research Institute

Inventor： Sung Ryul YUN ,  Suntak PARK ,  Seongcheol MUN ,  Bong Je PARK ,  Seung Koo PARK ,  JaeWoong YOON ,  Inwook HWANG ,  Jeong Muk LIM

IPC: G06F3/01 ,  G06F3/041

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.