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：US11435619B2

公开(公告)日：2022-09-06

申请号：US17381997

申请日：2021-07-21

Applicant: LG DISPLAY CO., LTD.

Inventor： MyungJoon Park ,  Kyuhwan Lee

IPC: G02F1/13357 ,  F21V8/00

Abstract: A backlight unit for a display device includes a light path control pattern disposed over a light source and including portions having different types of reflective characteristic and a reflective layer disposed on a substrate where the light source is mounted and including portions having different types of reflective characteristic, a light guide distance of a light emitted from the light source can be increased and a light uniformity can be maintained, so that as a light can be supplied to each area evenly while increasing a distance between the light sources and reducing the number of the light sources, an image quality of the backlight unit can be enhanced.

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：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：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：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：US10761370B2

公开(公告)日：2020-09-01

申请号：US16183020

申请日：2018-11-07

Applicant: LG Display Co., Ltd.

Inventor： MyungJoon Park

IPC: G02F1/13357 ,  G02F1/13 ,  G02B26/08 ,  G02B5/18

Abstract: An optical film and a display device comprising the same are disclosed, in which luminance may be prevented from being deteriorated. The optical film comprises a first base film; a second base film spaced apart from the first base film to face the first base film; and an optical pattern arranged between the first base film and the second base film, absorbing a portion of light incident to the optical film, wherein the optical pattern has a reflective surface at one end.

公开(公告)号：US09874676B2

公开(公告)日：2018-01-23

申请号：US15220855

申请日：2016-07-27

Applicant: LG DISPLAY CO., LTD.

Inventor： Young Ki Song ,  MyungJoon Park

IPC: F21V8/00 ,  G02F1/1335

CPC classification number: G02B6/0036 ,  G02B6/0016 ,  G02B6/0038 ,  G02B6/0058 ,  G02B6/0061 ,  G02B6/0073 ,  G02F1/133603 ,  G02F1/133606 ,  G02F2001/133607

Abstract: A light guide plate in accordance with various embodiments comprises: a body having a light incident part at a first side surface of the body; an upper optical pattern at a top side of the body; and a lower optical pattern at a bottom side of the body, wherein the lower optical pattern is an embossed pattern protruding from the bottom side of the body and having a trapezoid shape, wherein a first end of the trapezoid shape has a first width and a second end of the trapezoid shape has a second width, wherein the first end is closer to the light incident part than the second end, and wherein the first width is narrower than the second width.