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：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：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.