公开(公告)号：US11231615B2

公开(公告)日：2022-01-25

申请号：US17077672

申请日：2020-10-22

Applicant: LG DISPLAY CO., LTD.

Inventor： Kyuhwan Lee ,  SangChul Ryu ,  DongSeok Lee ,  MyungJoon Park ,  GwanHoon Park ,  Suhun Lee

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

Abstract: Disclosed is a backlight unit and a display device including the same. The backlight unit can include a light emitting section including a plurality of light emitting devices disposed on a substrate, and a light source protection layer disposed on the plurality of light emitting devices, wherein an air gap is disposed between a top surface of the substrate and a bottom surface of the light source protection layer and in between the light emitting devices, a light conversion sheet having a plurality of light conversion patterns disposed in positions corresponding to the plurality of light emitting devices, and a phosphor film disposed on the light conversion sheet.

公开(公告)号：US10782563B2

公开(公告)日：2020-09-22

申请号：US16543958

申请日：2019-08-19

Applicant: LG Display Co., Ltd.

Inventor： Suhun Lee ,  SangChul Ryu ,  DongSeok Lee ,  MyungJoon Park

IPC: G02F1/13357

Abstract: A stereoscopic reflection pattern includes a first reflection pattern including a first portion facing the light source and having a first reflectivity with respect to the light having the first wavelength band, and a second portion disposed adjacent to the first portion and having a second reflectivity with respect to the light having the first wavelength band, and the a second reflectivity being lower than the first reflectivity, and a second reflection pattern disposed between the plurality of light sources and the first reflection pattern, at least partially corresponding to the second portion of the first reflection pattern and having a third reflectivity with respect to the light in the first wavelength band which is higher than the second reflectivity.

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：US11493681B2

公开(公告)日：2022-11-08

申请号：US17556580

申请日：2021-12-20

Applicant: LG Display Co., Ltd.

Inventor： Suhun Lee

IPC: F21V8/00 ,  G09G3/34

Abstract: A backlight unit and a display device including the backlight unit are discussed. The backlight unit can include a printed circuit, a plurality of light sources disposed on the printed circuit, and a first base film disposed on the printed circuit and including a plurality of first holes provided in an area where the plurality of light sources are disposed and a plurality of second holes spaced apart from the plurality of first holes, wherein the plurality of second holes surround the plurality of first holes. The backlight unit can further include a plurality of light source protectors disposed on the printed circuit and disposed in the plurality of first holes, a plurality of light path converters disposed on the printed circuit and including a material different from the light source protectors, and a light control film disposed on the light source protectors and the light path converters.

公开(公告)号：US11467447B2

公开(公告)日：2022-10-11

申请号：US17243007

申请日：2021-04-28

Applicant: LG Display Co., Ltd.

Inventor： JaeHo Lee ,  MyungJoon Park ,  Suhun Lee

IPC: G02F1/13357

Abstract: A backlight unit and a display device including the backlight unit are discussed. By arranging at least one electronic element for driving a light source and the backlight unit on a surface where the light source is disposed in a printed circuit and arranging a pattern having a reflective characteristic in an area where the electronic element is disposed, an image quality of the backlight unit can be maintained and a design structure of the backlight unit can be simplified. In addition, the light source and the electronic element can be disposed on a same surface of the printed circuit so that a space is not present between an opposite surface of the surface of the printed circuit where the light source is disposed and a cover bottom, so the performance of a heat dissipation can be improved in an area where the light source or the electronic element overlaps.

公开(公告)号：US11422405B2

公开(公告)日：2022-08-23

申请号：US16950533

申请日：2020-11-17

Applicant: LG Display Co., Ltd.

Inventor： GwanHoon Park ,  SangChul Ryu ,  DongSeok Lee ,  Suhun Lee

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

Abstract: Embodiments of the present disclosure relate to a light conversion film, a backlight unit and a display device, and according to the embodiments, white light can be produced by a simplified configuration and be uniformly provided to a panel by disposing, over areas corresponding to light sources, patterns changing traveling paths of light emitted from a light source and patterns converting wavelengths of light. Further, by allowing a base film to provide a function of guiding light by disposing, over a light source, the base film on which a light path change pattern and a color conversion pattern are disposed to be adjacent to the light source, it is possible to minimize a thickness of the backlight unit and enhance image quality presented by illumination of the backlight unit.

公开(公告)号：US11143912B2

公开(公告)日：2021-10-12

申请号：US16939686

申请日：2020-07-27

Applicant: LG DISPLAY CO., LTD

Inventor： Suhun Lee ,  Donghwi Kim

IPC: G02F1/13357 ,  G02F1/1335

Abstract: Embodiments of the present disclosure provide a backlight unit comprising at least one light emitting unit emitting light in a first wavelength band, a phosphor film exciting the light in the first wavelength band emitted from the light emitting unit to emit the light in the first to a third wavelength bands, a first reflective film disposed in a position corresponding to a rim of the phosphor film and causing to reflect the light in the first wavelength band, a second reflective film disposed adjacent to the first reflective film and causing to reflect the light in the second and third wavelength bands, and a dam disposed around the light emitting unit. A display device using the backlight unit is also provided.

公开(公告)号：US10928859B2

公开(公告)日：2021-02-23

申请号：US16600434

申请日：2019-10-11

Applicant: LG Display Co., Ltd.

Inventor： Suhun Lee ,  DongSeok Lee ,  SangChul Ryu ,  MyungJoon Park

IPC: G06F1/16 ,  F21V8/00

Abstract: A display device comprises a plurality of island substrates spaced apart from one another and having a plurality of display elements disposed thereon; a lower substrate supporting the plurality of island substrates and the lower substrate being more flexible than the plurality of island substrates; a plurality of connection lines electrically connecting between the island substrates; and a light-transmitting unit disposed on the island substrates and the lower substrate and transmitting light from the plurality of display elements.

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.