公开(公告)号：US10393945B2

公开(公告)日：2019-08-27

申请号：US15860202

申请日：2018-01-02

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Dongouk Kim ,  Joonyong Park ,  Jaeseung Chung ,  Alexander V. Morozov ,  Bongsu Shin ,  Jihyun Bae ,  Seokho Song ,  Dongsik Shim ,  Sunghoon Lee

IPC: F21V7/04 ,  F21V8/00

Abstract: Provided are a directional backlight unit and an image display apparatus including the same. The directional backlight unit includes at least one light source, a light guide plate arranged at a side of the at least one light source and configured to guide light emitted from the at least one light source by total reflection, a plurality of diffraction gratings arranged in a pattern at a surface of the light guide plate and configured to diffract the light and to emit the light diffracted by the plurality of diffraction gratings at a predetermined angle from a front surface; and a mirror arranged at a rear surface of the light guide plate and configured to reflect the light diffracted by the plurality of diffraction gratings toward the light guide plate, the rear surface of the light guide plate being opposite to the front surface of the light guide plate.

公开(公告)号：US10379280B2

公开(公告)日：2019-08-13

申请号：US15414015

申请日：2017-01-24

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Jaeseung Chung ,  Bongsu Shin ,  Joonyong Park ,  Sunghoon Lee ,  Dongouk Kim ,  Hyunjoon Kim ,  Jihyun Bae ,  Dongsik Shim

IPC: F21V8/00 ,  G02B5/18 ,  G02B5/20 ,  G02B27/10

Abstract: A directional backlight unit and a three-dimensional (3D) image display device including the directional backlight unit are provided. The directional backlight unit includes: a light guide plate, a light source configured to irradiate an incident surface of the light guide plate with a plurality of color lights, and a grating that includes a sub-grating configured to react to all of the plurality of color lights. The directional backlight unit may further include a color filter that corresponds to a plurality of color lights emitted from each sub-grating.

公开(公告)号：US09880343B2

公开(公告)日：2018-01-30

申请号：US15090959

申请日：2016-04-05

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Dongsik Shim ,  Hongseok Lee ,  Seogwoo Hong ,  Changsoo Lee ,  Hyunjoon Kim ,  Bongsu Shin

IPC: F21V7/04 ,  F21V8/00 ,  G02B27/22

CPC classification number: G02B6/005 ,  G02B6/0051 ,  G02B6/0053 ,  G02B6/0055 ,  G02B27/22

Abstract: A backlight unit using a micro optical switch and a three-dimensional (3D) image display device are provided. The backlight unit includes a light source configured to irradiate light, a light guide plate configured to guide the irradiated light, an optical switch array including micro optical switches disposed above the light guide plate for each of cells of the backlight unit, and a lens array disposed above and corresponding to the optical switch array. Each of the micro optical switches includes a substrate, a first electrode layer disposed on the substrate and including first holes, and a second electrode layer spaced apart from the first electrode layer and including second holes not facing the first holes.

公开(公告)号：US09872120B2

公开(公告)日：2018-01-16

申请号：US14665213

申请日：2015-03-23

Applicant: Samsung Electronics Co., Ltd.

Inventor： Seogwoo Hong ,  Dongsik Shim ,  Seokwhan Chung

IPC: A61B8/00 ,  H04R31/00 ,  B06B1/02

CPC classification number: H04R31/006 ,  B06B1/0292

Abstract: An ultrasonic transducer module may comprise: an ultrasonic transducer comprising a substrate, a thin film separated from the substrate, a support portion for supporting the thin film, and a first electrode pad on the substrate; and/or a circuit board comprising a main body, an opening in the main body for accommodating the thin film, and a second electrode pad attached to the first electrode pad. An ultrasonic transducer may comprise: a substrate; a plurality of first electrode layers on the substrate, with spaces between the first electrode layers; an insulating layer between the substrate and the first electrode layers; a support portion on the first electrode layers; a thin film supported by the support portion, with cavities between each of the first electrode layers and the thin film; and/or a second electrode layer on the thin film.