公开(公告)号：US11630345B2

公开(公告)日：2023-04-18

申请号：US17500288

申请日：2021-10-13

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：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：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.