公开(公告)号：US20210124305A1

公开(公告)日：2021-04-29

申请号：US16988072

申请日：2020-08-07

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Yong Hae KIM ,  Seong-Mok CHO ,  Chi-Sun HWANG ,  Ji Hun CHOI ,  Gi Heon KIM ,  Jong-Heon YANG ,  Sang Hoon CHEON ,  Kyunghee CHOI ,  Jae-Eun PI

IPC: G03H1/22

Abstract: Provided are a hologram display device and a method of manufacturing the hologram display device. The hologram display device includes a light source unit that emits light, a spatial light modulator that modulates the light emitted from the light source unit, and a random pinhole panel. The random pinhole panel includes a plurality of pinholes of a random position or a random size and is arranged in line with an output part of the spatial light modulator. In the hologram display device and the method of manufacturing the hologram display device, a position and size of a random pinhole on the random pinhole are not limited to inside each pixel of the spatial light modulator.

公开(公告)号：US20210034013A1

公开(公告)日：2021-02-04

申请号：US16846857

申请日：2020-04-13

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Seong-Mok CHO ,  Yong Hae KIM ,  Sang Hoon CHEON ,  Kyunghee CHOI ,  Chi-Sun HWANG

IPC: G03H1/22 ,  G02F1/01

Abstract: A spatial light modulator according to the inventive concept includes a light modulation layer including a plurality of pixels arranged on a plane perpendicular to a first direction, a first lens array including first lenses corresponding one-to-one with the pixels, a second lens array including second lenses corresponding one-to-one with the first lenses, and a spacer layer between the first lens array and the second lens array. Each of the first lenses has a first central axis extending in the first direction and the first central axes of the first lenses meet at different positions for each of the pixels.

公开(公告)号：US20240128653A1

公开(公告)日：2024-04-18

申请号：US18343068

申请日：2023-06-28

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Yong Hae KIM ,  Chi-Sun HWANG ,  Joo Yeon KIM ,  Jaehyun MOON ,  Jong-Heon YANG ,  Kyunghee CHOI ,  Ji Hun CHOI

IPC: H01Q15/00 ,  H01Q1/36 ,  H01Q15/14

CPC classification number: H01Q15/0086 ,  H01Q1/364 ,  H01Q15/148

Abstract: Disclosed is a meta-structure. The meta-structure includes a lower electrode, a lower insulating layer on the lower electrode, a lower metal oxide layer on the lower insulating layer, a metal layer on the lower metal oxide layer, an upper metal oxide layer on the metal layer, an upper insulating layer on the upper metal oxide layer, and antenna electrodes on the upper insulating layer.

公开(公告)号：US20210231956A1

公开(公告)日：2021-07-29

申请号：US17154737

申请日：2021-01-21

Applicant: Electronics and Telecommunications Research Institute

Inventor： Seong-Mok CHO ,  Yong Hae KIM ,  Hyunkoo LEE ,  Sang Hoon CHEON ,  Kyunghee CHOI ,  Chi-Sun HWANG

IPC: G02B27/01 ,  H01L25/04 ,  H01L51/52 ,  G02C1/06

Abstract: Provided are a display device and an augmented reality apparatus including the same. The display device includes a display panel including display blocks and an optics array including pin hole structures that one-to-one correspond to the display blocks. Here, each of the pin hole structures includes a pin hole and a shielding area surrounding the pin hole, and the display blocks are spaced apart from each other in a first direction parallel to a top surface of the display panel and a second direction crossing the first direction and parallel to the top surface of the display panel.

公开(公告)号：US20250013034A1

公开(公告)日：2025-01-09

申请号：US18596005

申请日：2024-03-05

Applicant: Electronics and Telecommunications Research Institute

Inventor： Chi-Sun HWANG ,  Yong Hae KIM ,  Joo Yeon KIM ,  Jaehyun MOON ,  Jong-Heon YANG ,  Kyunghee CHOI ,  Ji Hun CHOI

IPC: G02B26/08 ,  B82Y20/00 ,  G02F1/1343 ,  G02F1/137

Abstract: Disclosed is an active meta device. The device includes a metal reflective plate, an insulating layer on the metal reflective plate, a first modulation line block provided on one side of the insulating layer, and a second modulation line block provided on another side of the insulating layer facing the first modulation line block.

公开(公告)号：US20220137556A1

公开(公告)日：2022-05-05

申请号：US17491246

申请日：2021-09-30

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Yong Hae KIM ,  Gi Heon KIM ,  Joo Yeon KIM ,  Jong-Heon YANG ,  Sang Hoon CHEON ,  Seong-Mok CHO ,  Kyunghee CHOI ,  Ji Hun CHOI ,  Jae-Eun PI ,  Chi-Sun HWANG

IPC: G03H1/22

Abstract: Provided is an operation method for a digital hologram implementation device including a backlight and a spatial light modulator, the operation method including setting an initial phase value of an optical signal to a remedy phase, computing a reduced phase based on the remedy phase, correcting the remedy phase based on a difference between the reduced phase and a preset optimized phase, determining whether the corrected remedy phase is a stabilized phase, performing forward propagation on the stabilized phase and an amplitude of the optical signal, correcting the amplitude of the optical signal, performing backward propagation on the corrected amplitude and the stabilized phase, and determining whether a phase derived by the backward propagation is an optimized phase.

公开(公告)号：US20240061306A1

公开(公告)日：2024-02-22

申请号：US18342630

申请日：2023-06-27

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Yong Hae KIM ,  Chi-Sun HWANG ,  Kyunghee CHOI ,  Joo Yeon KIM ,  Jaehyun MOON ,  Jong-Heon YANG ,  Ji Hun CHOI

IPC: G02F1/19

CPC classification number: G02F1/19

Abstract: Disclosed is a meta-structure. The meta-structure includes a lower electrode, a lower insulating layer on the lower electrode, a lower metal oxide layer on the lower insulating layer, a lower metal layer on the lower metal oxide layer, a middle metal oxide layer on the lower metal layer, an upper metal layer on the middle metal oxide layer, an upper metal oxide layer on the upper metal layer, an upper insulating layer on the upper metal oxide layer, and antenna electrodes on the upper insulating layer.

公开(公告)号：US20210325826A1

公开(公告)日：2021-10-21

申请号：US17232955

申请日：2021-04-16

Applicant: Electronics and Telecommunications Research Institute

Inventor： Sang Hoon CHEON ,  Yong Hae KIM ,  Seong-Mok CHO ,  Kyunghee CHOI ,  Chi-Sun HWANG

IPC: G03H1/22

Abstract: Disclosed is an apparatus for displaying a hologram including a pixel circuit array including first to nth pixel circuits, a first insulating layer provided on the pixel circuit array, first to nth pixel electrodes provided on the first insulating layer and electrically connected to the first to nth pixel circuits, respectively, a second insulating layer provided on the first insulating layer, first to nth display electrodes provided on the second insulating layer and electrically connected to the first to nth pixel electrodes, respectively, a display panel formed on the first to nth display electrodes, and a common electrode formed on the display panel. The first to nth display electrodes are clustery formed, and an area of the first to nth display electrodes is smaller than an area of the pixel circuit array.