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：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：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.

公开(公告)号：US11353740B2

公开(公告)日：2022-06-07

申请号：US17072336

申请日：2020-10-16

Applicant: LG Display Co., Ltd.

Inventor： Kyuhwan Lee ,  GwanHoon Park ,  Suhun Lee

IPC: G02F1/1335 ,  G02F1/13357

Abstract: A backlight unit comprises a light emitting unit having a plurality of light emitting elements, a light conversion sheet having a plurality of light conversion patterns disposed at positions corresponding to the plurality of light emitting elements, and a phosphor film disposed on the light conversion sheet and including a partition wall dividing a light emitting surface into a plurality of sub-blocks and phosphor layers respectively disposed on the plurality of sub-blocks.

公开(公告)号：US11022841B2

公开(公告)日：2021-06-01

申请号：US16702882

申请日：2019-12-04

Applicant: LG Display Co., Ltd.

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

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

Abstract: A backlight unit for a display device comprises a plurality of light sources; a printed circuit including a first area where the plurality of light sources are disposed and a second area horizontally extended from the first area where no light source is disposed; at least one reflection plate disposed between the plurality of light sources in the first area; a light source protection portion covering the plurality of light sources and the reflection plate in the first area; and a printed circuit protection portion disposed on a side surface of the light source protection portion located at a boundary between the first and second areas and extended to an exposed surface of the printed circuit in the second area.

公开(公告)号：US12189164B2

公开(公告)日：2025-01-07

申请号：US18361735

申请日：2023-07-28

Applicant: LG Display Co., Ltd.

Inventor： Myungjoon Park ,  Suhun Lee

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

Abstract: Disclosed herein are a backlight unit and a display device including the same. The backlight unit can reduce the number of light sources and can uniformly supply light to a region in which the light sources are disposed and a region in which the light sources are not disposed by arranging a reflective pattern on an upper surface of each light source to emit the light through a side portion of the light source and allowing the emitted light to travel by a light guide portion connecting between the light sources to be emitted above the light guide portion by a reflective layer positioned in a region between the light sources.

公开(公告)号：US11644716B2

公开(公告)日：2023-05-09

申请号：US17860083

申请日：2022-07-07

Applicant: LG Display Co., Ltd.

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

IPC: G02F1/00 ,  G02F1/13357

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

Abstract: Embodiments of the present disclosure are related to a backlight unit and a display device, and the backlight unit in which an optical plate including an engraved pattern in which a color conversion material is disposed is positioned on a light source can be provided. As the color conversion material is disposed in the engraved pattern, a change of the color conversion material by an external factor can be prevented and an amount of the color conversion material can be reduced, thus the backlight unit providing an image quality greater or equal to a certain level and with improved reliability can be implemented easily.

公开(公告)号：US20230016232A1

公开(公告)日：2023-01-19

申请号：US17860083

申请日：2022-07-07

Applicant: LG Display Co., Ltd.

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

IPC: G02F1/13357

Abstract: Embodiments of the present disclosure are related to a backlight unit and a display device, and the backlight unit in which an optical plate including an engraved pattern in which a color conversion material is disposed is positioned on a light source can be provided. As the color conversion material is disposed in the engraved pattern, a change of the color conversion material by an external factor can be prevented and an amount of the color conversion material can be reduced, thus the backlight unit providing an image quality greater or equal to a certain level and with improved reliability can be implemented easily.