公开(公告)号：US11852922B2

公开(公告)日：2023-12-26

申请号：US17857577

申请日：2022-07-05

Applicant: LG Display Co., Ltd.

Inventor： RokHee Lee ,  Hyunmin Park ,  MyungWon Seo

IPC: G02F1/13357 ,  F21V8/00

CPC classification number: G02F1/133611 ,  G02B6/0065 ,  G02F1/133605 ,  G02F1/133606 ,  G02B6/0051 ,  G02B6/0055 ,  G02F1/133603

Abstract: A backlight unit and a display device including the backlight unit is disclosed The backlight unit includes a light source protective element located on light sources, a base film located on the light source protective element, and a plurality of optical path control patterns, each of which is located to overlap a corresponding one of the light sources, that are disposed on at least one of both surfaces of the base film and configured to direct traveling paths of at least some of incident light rays, the optical path control patterns including an acrylic-based resin or a polyester-based resin and at least one type of inorganic particles dispersed in the resins, thereby enabling a thickness of the backlight unit to be reduced and image quality to improve.

公开(公告)号：US11614218B2

公开(公告)日：2023-03-28

申请号：US17521544

申请日：2021-11-08

Applicant: LG Display Co., Ltd.

Inventor： Hyunmin Park

IPC: F21V9/30 ,  F21V7/00

Abstract: A color conversion member, a backlight unit and a display device are discussed. The color conversion member including a reflection partition wall and color conversion material is disposed between a light source and a light path control sheet, so that the thickness of the backlight unit can be reduced, and the wavelength conversion function and the light guide function can be easily implemented by the color conversion member. In addition, by adjusting the thickness of the reflection partition wall and the thickness of the color conversion material, or by adjusting the structure of a light source protection layer located under the color conversion member, it is possible to easily implement various optical properties needed according to the backlight unit without increasing the thickness of the backlight unit.

公开(公告)号：US11803083B2

公开(公告)日：2023-10-31

申请号：US17978808

申请日：2022-11-01

Applicant: LG Display Co., Ltd.

Inventor： KiSung Lim ,  JinSu Moon ,  MyungWon Seo ,  Hyunmin Park

IPC: G02F1/1335 ,  F21V8/00 ,  F21V9/30

CPC classification number: G02F1/133614 ,  G02B6/0031 ,  F21V9/30

Abstract: A backlight unit and a display device are disclosed. There may be provided a backlight unit and a display device with enhanced light absorption of light of an absorption wavelength band and enhanced color gamut, by including a color conversion layer (or color conversion film) for converting the wavelength band of the light emitted from a light source and a light absorption layer (or light absorption film) for absorbing light of a specific absorption wavelength band, in an area adjacent the light source.

公开(公告)号：US11181777B2

公开(公告)日：2021-11-23

申请号：US17100145

申请日：2020-11-20

Applicant: LG Display Co., Ltd.

Inventor： RokHee Lee ,  Hyunmin Park

IPC: G02F1/13357 ,  G02F1/1335

Abstract: Embodiments of the present disclosure provides with a backlight unit and a display device with the backlight unit including a plurality of light emitting elements disposed on a substrate, a first reflector disposed on the substrate and including a plurality of holes, one of the plurality of light emitting elements being disposed in each hole, a light conversion sheet disposed on the substrate and having a light conversion pattern disposed at a position overlapping the light emitting element, and a phosphor sheet having a first phosphor disposed on the substrate, wherein a size of first light emitting elements disposed on the edge of the substrate among the plurality of light emitting elements is larger than size of second light emitting elements disposed in the center of the substrate.

公开(公告)号：US20240420987A1

公开(公告)日：2024-12-19

申请号：US18654575

申请日：2024-05-03

Applicant: LG Display Co., Ltd.

Inventor： Suhun Lee ,  Hyunmin Park

IPC: H01L21/683 ,  H01L25/075

Abstract: According to an aspect of the present disclosure, a donor includes a base substrate; a resin layer which is disposed on the base substrate and includes a plurality of chip bumps; and an airbag layer which is disposed between the base substrate and the resin layer and is configured to be expandable by air injected from the outside. Accordingly, a height of the plurality of chip bumps is adjusted using the airbag layer so that a gap between the plurality of chip bumps and the plurality of light emitting diodes may be removed during the transfer process.

公开(公告)号：US20230205009A1

公开(公告)日：2023-06-29

申请号：US17978808

申请日：2022-11-01

Applicant: LG Display Co., Ltd.

Inventor： KiSung Lim ,  JinSu Moon ,  MyungWon Seo ,  Hyunmin Park

IPC: G02F1/1335 ,  F21V8/00

CPC classification number: G02F1/133614 ,  G02B6/0031

Abstract: A backlight unit and a display device are disclosed. There may be provided a backlight unit and a display device with enhanced light absorption of light of an absorption wavelength band and enhanced color gamut, by including a color conversion layer (or color conversion film) for converting the wavelength band of the light emitted from a light source and a light absorption layer (or light absorption film) for absorbing light of a specific absorption wavelength band, in an area adjacent the light source.

公开(公告)号：US20230026878A1

公开(公告)日：2023-01-26

申请号：US17857577

申请日：2022-07-05

Applicant: LG Display Co., Ltd.

Inventor： RokHee Lee ,  Hyunmin Park ,  MyungWon Seo

IPC: G02F1/13357

Abstract: A backlight unit and a display device including the backlight unit is disclosed The backlight unit includes a light source protective element located on light sources, a base film located on the light source protective element, and a plurality of optical path control patterns, each of which is located to overlap a corresponding one of the light sources, that are disposed on at least one of both surfaces of the base film and configured to direct traveling paths of at least some of incident light rays, the optical path control patterns including an acrylic-based resin or a polyester-based resin and at least one type of inorganic particles dispersed in the resins, thereby enabling a thickness of the backlight unit to be reduced and image quality to improve.

公开(公告)号：US10649134B2

公开(公告)日：2020-05-12

申请号：US15197252

申请日：2016-06-29

Applicant: LG DISPLAY CO., LTD.

Inventor： Hyunmin Park ,  SangChul Ryu ,  RokHee Lee ,  Suhun Lee

IPC: F21V8/00

Abstract: There are provided a circuit device for emitting heat to the outside and a backlight unit including the same. The present invention relates to a display device, a backlight unit connected to a display panel, or a constituent element thereof. The circuit device generates heat, and one or more heat emitting units for emitting heat generated from the light source of the backlight unit to the outside are added to the circuit device, and the backlight unit controlled by the aforementioned circuit device is provided. Each of the heat emitting units according to one embodiment of the present invention includes two or more different material layers to fix the circuit device and provide a heat emitting/directing function.