公开(公告)号：US20210341788A1

公开(公告)日：2021-11-04

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：US20240142692A1

公开(公告)日：2024-05-02

申请号：US18361735

申请日：2023-07-28

Applicant: LG Display Co., Ltd.

Inventor： MyungJoon PARK ,  SuHun LEE

IPC: F21V8/00

CPC classification number: G02B6/0055 ,  G02B6/0031 ,  G02B6/0046 ,  G02B6/0068 ,  G02B6/0076

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：US20210116754A1

公开(公告)日：2021-04-22

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

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：US20240080985A1

公开(公告)日：2024-03-07

申请号：US18351423

申请日：2023-07-12

Applicant: LG DISPLAY CO., LTD.

Inventor： Suhun LEE ,  MyungJoon PARK

IPC: H05K1/18 ,  G09G3/32 ,  H05K3/00

CPC classification number: H05K1/181 ,  G09G3/32 ,  H05K3/0044 ,  H05K2201/10106 ,  H05K2201/10128

Abstract: According to embodiments of the disclosure, it is possible to increase scattering effect and light reflectance in the area around the light source by increasing the ratio of the base layer exposed around the light source, which have protrusion patterns and have a higher reflectance than the cover layer and are positioned under the cover layer and the wiring layer of the printed circuit where the light source included in the backlight unit. Thus, there may be provided a backlight unit with enhanced light efficiency and image quality in the area around the light source and a display device including the same.

公开(公告)号：US20220066089A1

公开(公告)日：2022-03-03

申请号：US17381997

申请日：2021-07-21

Applicant: LG DISPLAY CO., LTD.

Inventor： MyungJoon PARK ,  Kyuhwan LEE

IPC: 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：US20200183230A1

公开(公告)日：2020-06-11

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: G02F1/1335 ,  F21V8/00

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：US20200089055A1

公开(公告)日：2020-03-19

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: G02F1/1335

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：US20210165277A1

公开(公告)日：2021-06-03

申请号：US17094417

申请日：2020-11-10

Applicant: LG Display Co., Ltd.

Inventor： MyungJoon PARK ,  JaeHo LEE ,  GwanHoon PARK ,  Kyuhwan LEE

IPC: G02F1/13357

Abstract: Embodiments of the present disclosure relates to a light path control element, a backlight unit and a display device, and by disposing, over one or more light sources, a light path control element including a first engraved patterns located on a surface through which light exits and located to correspond to respective light sources, and a second engraved patterns located on a surface into which light is incident and located in an areas between light sources, it is possible to improve functions of guiding and diffusing light emitted from the light sources. Accordingly, by increasing a distance between light sources and enabling a hot spot to be prevented and luminance uniformity to improve, it is possible to reduce the number of light sources and provide a backlight unit producing improved image quality.

公开(公告)号：US20190137826A1

公开(公告)日：2019-05-09

申请号：US16183020

申请日：2018-11-07

Applicant: LG Display Co., Ltd.

Inventor： MyungJoon PARK

IPC: G02F1/1335

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：US20170192156A1

公开(公告)日：2017-07-06

申请号：US15392646

申请日：2016-12-28

Applicant: LG Display Co., Ltd.

Inventor： Youngki SONG ,  MyungJoon PARK

IPC: F21V8/00 ,  G02F1/133 ,  G02F1/1333

CPC classification number: G02B6/0068 ,  G02B6/0036 ,  G02B6/0038 ,  G02B6/0045 ,  G02B6/0073 ,  G02F1/13306 ,  G02F1/133308 ,  G02F1/133603 ,  G02F1/133615 ,  G02F2001/133331 ,  G02F2001/133601 ,  G02F2001/133607 ,  G02F2001/133626

Abstract: Disclosed is a backlight unit for minimizing consumption power in realizing partial luminance The backlight unit includes a light guide member including a first light incident part and a second light incident part, a first light source unit disposed in the first light incident part, and a second light source unit disposed in the second light incident part. The first light source unit and the second light source unit have different luminous intensities.