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：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：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.