公开(公告)号：US11815761B2

公开(公告)日：2023-11-14

申请号：US17855724

申请日：2022-06-30

Applicant: LG Display Co., Ltd.

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

IPC: G02F1/13357

CPC classification number: G02F1/133603 ,  G02F1/133605 ,  G02F1/133606

Abstract: Embodiments of the present disclosure are related to a backlight unit and a display device including the same, the backlight unit that a light source unit including a light source, and a light reflector surrounding the light source, and including at least one of a light reflection pattern, a light diffusion pattern, or a light source protection layer including a color conversion material is disposed can be provided. As an exposed electrode layer on a substrate is covered by the light reflector, a light efficiency can be improved by reducing a reflection loss by the electrode layer, and by various functions that the light source unit provides, a fabrication efficiency the backlight unit can be improved and the backlight unit having a thin thickness can be provided.

公开(公告)号：US11493802B2

公开(公告)日：2022-11-08

申请号：US17553398

申请日：2021-12-16

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: A display device including a display panel, and a backlight unit configured to provide light to the display panel are discussed. 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, a light conversion sheet having a plurality of light conversion patterns disposed in positions corresponding to the plurality of light emitting devices, respectively, a phosphor film disposed on the light conversion sheet, and at least one reflector including a plurality of holes on the substrate. An air gap is disposed between a top surface of the at least one reflector and a bottom surface of the light conversion sheet.

公开(公告)号：US20210149251A1

公开(公告)日：2021-05-20

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: G02F1/13357

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：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：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.

公开(公告)号：US11762238B2

公开(公告)日：2023-09-19

申请号：US17497463

申请日：2021-10-08

Applicant: LG Display Co., Ltd.

Inventor： Kyuhwan Lee ,  SangChul Ryu ,  DongSeok Lee

IPC: G02F1/1335 ,  H05K1/02 ,  G02F1/13357

CPC classification number: G02F1/133612 ,  G02F1/133603 ,  H05K1/0298 ,  H05K2201/10106 ,  H05K2201/10128

Abstract: Embodiments of the present disclosure relate to a printed circuit, a backlight unit, and a display device. The printed circuit on which a light source is mounted can be easily manufactured in a single form, by depositing and arranging a wiring layer on a substrate and mounting the light source on the wiring layer. Further, the printed circuit is arranged so that the wiring layer includes a plurality of bonding metal layers and a plurality of wiring metal layers, and a part of the bonding metal layer positioned between the plurality of wiring metal layers and disposed in an area overlapping a pad portion of the light source is removed. Therefore, even though the main metal layer of the wiring layer is removed during reworking, it is possible to provide the printed circuit capable of electrically connecting to the light source by the sub-metal layer of the wiring layer.

公开(公告)号：US20220107530A1

公开(公告)日：2022-04-07

申请号：US17553398

申请日：2021-12-16

Applicant: LG DISPLAY CO., LTD.

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

IPC: G02F1/13357

Abstract: A display device including a display panel, and a backlight unit configured to provide light to the display panel are discussed. 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, a light conversion sheet having a plurality of light conversion patterns disposed in positions corresponding to the plurality of light emitting devices, respectively, a phosphor film disposed on the light conversion sheet, and at least one reflector including a plurality of holes on the substrate. An air gap is disposed between a top surface of the at least one reflector and a bottom surface of the light conversion sheet.

公开(公告)号：US11175531B2

公开(公告)日：2021-11-16

申请号：US16900774

申请日：2020-06-12

Applicant: LG Display Co., Ltd.

Inventor： SuHun Lee ,  SangChul Ryu ,  DongSeok Lee ,  MyungJoon Park ,  GwanHoon Park ,  KyuHwan Lee

IPC: G02F1/13357 ,  F21V8/00

Abstract: Provided are a light guide film, a backlight unit, and a display device. Light guide portions are disposed in holes of a reflection plate on which light sources are disposed, and a light guide film is directly disposed on the reflection plate and the light guide portions to provide a light guiding function and a light shielding function. Therefore, a method of facilitating implementation of a backlight unit with a small thickness, which satisfies image quality is provided. Further, each of the light shielding patterns has different reflectances in different areas, thereby increasing the amount of light supplied to an area between light sources. Therefore, a backlight unit with a reduced number of light sources and improved image quality may be provided.

公开(公告)号：US20230020919A1

公开(公告)日：2023-01-19

申请号：US17855724

申请日：2022-06-30

Applicant: LG Display Co., Ltd.

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

IPC: G02F1/13357

Abstract: Embodiments of the present disclosure are related to a backlight unit and a display device including the same, the backlight unit that a light source unit including a light source, and a light reflector surrounding the light source, and including at least one of a light reflection pattern, a light diffusion pattern, or a light source protection layer including a color conversion material is disposed can be provided. As an exposed electrode layer on a substrate is covered by the light reflector, a light efficiency can be improved by reducing a reflection loss by the electrode layer, and by various functions that the light source unit provides, a fabrication efficiency the backlight unit can be improved and the backlight unit having a thin thickness can be provided.