公开(公告)号：US20220206209A1

公开(公告)日：2022-06-30

申请号：US17556580

申请日：2021-12-20

Applicant: LG Display Co., Ltd.

Inventor： Suhun LEE

IPC: F21V8/00 ,  G09G3/34

Abstract: A backlight unit and a display device including the backlight unit are discussed. The backlight unit can include a printed circuit, a plurality of light sources disposed on the printed circuit, and a first base film disposed on the printed circuit and including a plurality of first holes provided in an area where the plurality of light sources are disposed and a plurality of second holes spaced apart from the plurality of first holes, wherein the plurality of second holes surround the plurality of first holes. The backlight unit can further include a plurality of light source protectors disposed on the printed circuit and disposed in the plurality of first holes, a plurality of light path converters disposed on the printed circuit and including a material different from the light source protectors, and a light control film disposed on the light source protectors and the light path converters.

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：US20160377799A1

公开(公告)日：2016-12-29

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

CPC classification number: G02B6/0085 ,  G02B6/0068 ,  G02B6/0083

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.

Abstract translation: 提供了用于向外部发射热量的电路装置和包括该电路装置的背光单元。 本发明涉及显示装置，与显示面板连接的背光单元或其构成要素。 电路装置产生热量，并且将一个或多个用于将从背光单元的光源产生的热量发射到外部的发热单元添加到电路装置中，并且提供由上述电路装置控制的背光单元。 根据本发明的一个实施例的每个发热单元包括两个或更多个不同的材料层，以固定电路装置并提供发热/引导功能。

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：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：US20210157204A1

公开(公告)日：2021-05-27

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: G02F1/13357

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：US20210149230A1

公开(公告)日：2021-05-20

申请号：US17072336

申请日：2020-10-16

Applicant: LG Display Co., Ltd.

Inventor： Kyuhwan LEE ,  GwanHoon PARK ,  Suhun LEE

IPC: 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：US20210033930A1

公开(公告)日：2021-02-04

申请号：US16939686

申请日：2020-07-27

Applicant: LG DISPLAY CO., LTD

Inventor： Suhun LEE ,  Donghwi KIM

IPC: G02F1/13357

Abstract: Embodiments of the present disclosure provide a backlight unit comprising at least one light emitting unit emitting light in a first wavelength band, a phosphor film exciting the light in the first wavelength band emitted from the light emitting unit to emit the light in the first to a third wavelength bands, a first reflective film disposed in a position corresponding to a rim of the phosphor film and causing to reflect the light in the first wavelength band, a second reflective film disposed adjacent to the first reflective film and causing to reflect the light in the second and third wavelength bands, and a dam disposed around the light emitting unit. A display device using the backlight unit is also provided.