公开(公告)号：US10139546B2

公开(公告)日：2018-11-27

申请号：US15408327

申请日：2017-01-17

Applicant: LG ELECTRONICS INC.

Inventor： Geunhwan Kim ,  Sujin Sim ,  Woosuk Lee ,  Juyoung Joung ,  Minho Kim

IPC: F21V8/00

Abstract: A display device is disclosed. The display device includes a display panel, a light guide plate located in a rear of the display panel, a light assembly located on a side of the light guide plate and providing the light guide plate with light, and a light absorbing portion formed on a back surface or a front surface of the light guide plate and absorbing the light provided by the light assembly in a predetermined wavelength range.

公开(公告)号：US09971195B2

公开(公告)日：2018-05-15

申请号：US14982674

申请日：2015-12-29

Applicant: LG ELECTRONICS INC.

Inventor： Jongho Han ,  Uihyung Lee ,  Juyoung Joung ,  Wondo Kee

IPC: G02F1/1335 ,  F21V5/04 ,  G02B19/00

CPC classification number: G02F1/133606 ,  F21V5/045 ,  G02B19/0028 ,  G02B19/0061 ,  G02B19/0071 ,  G02F1/133603 ,  G02F2001/133607

Abstract: An optical lens and a display device including the same are provided. An optical lens includes a first surface having a circular cross-sectional shape, a second surface opposite to the first surface, and a third surface configured to connect the first surface and the second surface. The third surface includes a straight surface extending from a boundary of the first surface and a first curved surface extending from the straight surface to the second surface. The straight surface and the first curved surface extending in a path between the first surface and the second surface. The second surface includes a concave recess recessing in a direction of the first surface and the concave recess includes a second curved surface. Light that has passed through the second concave surface changes a path as the light passes through the first curved surface such that light path can be effectively controlled.

公开(公告)号：US09746709B2

公开(公告)日：2017-08-29

申请号：US14819842

申请日：2015-08-06

Applicant: LG ELECTRONICS INC.

Inventor： Geunhwan Kim ,  Jongho Han ,  Juyoung Joung ,  Wondo Kee ,  Minho Kim

IPC: G02F1/1335 ,  F21V8/00

CPC classification number: G02F1/133553 ,  G02B6/0021 ,  G02B6/0036 ,  G02B6/0046 ,  G02B6/0058 ,  G02B6/0096 ,  G02F1/133526 ,  G02F1/133615

Abstract: Provided are a backlight unit and a display apparatus including the same. An optical lens of an optical unit has a shape asymmetrical with respect to a plane that bisectionally divides a center of an optical package. A plurality of reflectors each of which has an embossed or engraved shape are disposed on a top surface of the reflection sheet.

公开(公告)号：US11747540B2

公开(公告)日：2023-09-05

申请号：US17776216

申请日：2019-11-12

Applicant: LG ELECTRONICS INC.

Inventor： Geunhwan Kim ,  Juyoung Joung ,  Jungnam An ,  Minho Kim

IPC: F21V8/00

CPC classification number: G02B6/0026 ,  G02B6/0031 ,  G02B6/0066

Abstract: The present invention can be applied to the technical field pertaining to display devices and, for example, relates to a flat lighting device using a light emitting diode (LED) and a display device including same. The present invention provides a display device including a flat lighting device, wherein the display device may comprise: a light source which emits white light by using a light emitting diode and a yellow phosphor; a red phosphor layer which is disposed on the light source and adsorbs a part of the white light emitted from the light source to emit red light; and a first dichroic filter layer which is disposed on the red phosphor layer and has a reflective pattern reflecting at least a part of the long-wavelength side of the wavelength region of the red light.

公开(公告)号：US20230004047A1

公开(公告)日：2023-01-05

申请号：US17855191

申请日：2022-06-30

Applicant: LG ELECTRONICS INC.

Inventor： Seungse KIM ,  Juyoung Joung ,  Minho KIM ,  Woongjoon HWANG ,  Dukil SUH

IPC: G02F1/13357 ,  G02F1/1333 ,  G02F1/1335

Abstract: Disclosed is a display device. The display device of the present disclosure may include: a display panel; a frame located at a rear side of the display panel; a substrate located between the display panel and the frame, wherein the substrate is coupled to the frame and extends in a longitudinal direction; a plurality of light sources mounted on the substrate, wherein each of the plurality of light sources are spaced apart from each other in the longitudinal direction of the substrate; a plurality of lenses coupled to the substrate, wherein the plurality of lenses cover the plurality of light sources; and a bar coupled to the substrate, wherein the bar connects each of the plurality of lenses.

公开(公告)号：US11422396B2

公开(公告)日：2022-08-23

申请号：US17214006

申请日：2021-03-26

Applicant: LG ELECTRONICS INC.

Inventor： Sangmin Baek ,  Juyoung Joung ,  Hyuncheol Cho ,  Seungse Kim ,  Minho Kim

IPC: G02F1/1333 ,  G02F1/13357 ,  G02F1/1345 ,  F21V8/00

Abstract: A display device is disclosed. The display device includes: a display panel; a frame disposed at a rear of the display panel; a light source disposed between the display panel and the frame, and configured to provide light to the display panel; a guide panel disposed adjacent to an edge of the display panel and coupled to the frame, and configured to support the display panel; and a front sheet including a light transmitting portion covering a front surface of the display panel, and a light shielding portion extending from the light transmitting portion and covering the guide panel, wherein the guide panel includes: an inner part disposed between the frame and the display panel and configured to support a rear surface of the display panel adjacent to the edge of the display panel; and an outer part disposed toward an outer side of the frame and configured to cover a side surface of the edge of the display panel.

公开(公告)号：US11327362B2

公开(公告)日：2022-05-10

申请号：US17121070

申请日：2020-12-14

Applicant: LG ELECTRONICS INC.

Inventor： Kyungjoon Lee ,  Uihyung Lee ,  Juyoung Joung ,  Wondo Kee ,  Minho Kim ,  Wongjoon Hwang ,  Jaeyoon Jeong ,  Bohee Kang ,  Manhyuck Han ,  Jiu Myeong

IPC: G02F1/13357 ,  F21V7/00 ,  F21V7/24 ,  F21V7/22 ,  G02F1/1335

Abstract: Disclosed herein are a backlight unit and a display device using the same. In an embodiment, the backlight unit includes a substrate, at least one light source on the substrate, a lenses placed over the light source, a reflection sheet in which at least one through hole corresponding to the lens is formed, and a reflection ring comprising an opening portion corresponding to the at least one light source, and placed between the lens and the substrate. In accordance with an embodiment of the present invention, luminance uniformity of the backlight unit can be improved because the reflection ring surrounding the light source is included.

公开(公告)号：US10852577B2

公开(公告)日：2020-12-01

申请号：US15891280

申请日：2018-02-07

Applicant: LG ELECTRONICS INC.

Inventor： Geunhwan Kim ,  Minho Kim ,  Sujin Sim ,  Juyoung Joung

IPC: G02F1/1335 ,  G02F1/13357 ,  F21V8/00 ,  G02F1/135

Abstract: A display device is disclosed. The display device comprises: a display panel; an optical assembly providing the display panel with light; and a light absorbing layer positioned on an optical path, the optical path leading to the display panel from the optical assembly, wherein the light provided from the optical assembly to the display panel includes a blue-based light, a green-based light, and a red-based light, wherein an intensity of the green-based light is 25% to 38% with respect to an intensity of the blue-based light 100%, and wherein an intensity of the red-based light is 14% to 32% with respect to the intensity of the blue-based light 100%.

公开(公告)号：US10768484B2

公开(公告)日：2020-09-08

申请号：US16441910

申请日：2019-06-14

Applicant: LG ELECTRONICS INC.

Inventor： Jeonggyu Kim ,  Jongho Han ,  Eunseok Kim ,  Uihyung Lee ,  Juyoung Joung ,  Jinsin Park

IPC: G02F1/13357 ,  G02F1/1335

Abstract: A backlight unit including a frame having a bottom area and a sidewall area extended from the bottom area; a single substrate located in on the bottom area of the frame, a plurality of optical assemblies being mounted on the single substrate; a reflection sheet located the frame and configured to reflect light emitted by the optical assemblies; and an optical sheet located over the reflection sheet. Further, the reflection sheet a first sheet area corresponding to the bottom area of the frame; a second sheet area corresponding to the sidewall area of the frame; and a cut portion cut from the first sheet at one portion abutting on one side of the single substrate.

公开(公告)号：US10754080B2

公开(公告)日：2020-08-25

申请号：US16313119

申请日：2017-04-10

Applicant: LG ELECTRONICS INC.

Inventor： Sujin Sim ,  Sangmin Baek ,  Geunhwan Kim ,  Minho Kim ,  Juyoung Joung

IPC: G02F1/1335 ,  G02B5/28 ,  G02B5/22 ,  F21V8/00 ,  G02B6/10 ,  G02F1/13357 ,  G02B5/10 ,  G02B19/00

Abstract: A display device is disclosed. The display device according to the present disclosure includes a frame; a light assembly disposed in at least one edge area of the frame; a panel positioned in front of the frame; and a light guide plate positioned between the frame and the panel so that light emitted from the light assembly is transferred to the panel, wherein the light assembly includes a light source and a filter positioned at a light path between the light source and the light guide plate and changing characteristics of light emitted from the light source. The present disclosure can improve display quality of the display device by changing characteristics of light emitted from the light source.