公开(公告)号：US20220128865A1

公开(公告)日：2022-04-28

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

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：US11163193B2

公开(公告)日：2021-11-02

申请号：US16999955

申请日：2020-08-21

Applicant: LG Display Co., Ltd.

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

IPC: G02F1/13357 ,  F21V9/30 ,  F21V9/32 ,  F21V9/20 ,  F21V9/35 ,  F21V8/00 ,  G02F1/1335

Abstract: Embodiments of the disclosure are related to a backlight unit and a display device, by disposing a filter reflecting a green light of a long wavelength on a color conversion sheet and disposing a filter reflecting a green light and a red light under the color conversion sheet, a wavelength band of a light supplied to a display panel is controlled and a color reproduction range may be improved while increasing a light efficiency. Furthermore, by disposing a sheet increasing an amount of a vertical light on the color conversion sheet, a wavelength band of a light reflected by a filter disposed on the color conversion sheet is controlled exactly and the backlight unit and the display device capable of a wide color gamut may be provided.

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：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：US11630345B2

公开(公告)日：2023-04-18

申请号：US17500288

申请日：2021-10-13

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：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.

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.