Invention Application
- Patent Title: Backlight Unit and Display Device
-
Application No.: US16696923Application Date: 2019-11-26
-
Publication No.: US20200183232A1Publication Date: 2020-06-11
- Inventor: KiSeong KIM , HyeokJoon YOON , SeungJu GWON , Donghwi KIM
- Applicant: LG Display Co., Ltd.
- Priority: com.zzzhc.datahub.patent.etl.us.BibliographicData$PriorityClaim@3cbec5ea com.zzzhc.datahub.patent.etl.us.BibliographicData$PriorityClaim@2ff8f096
- Main IPC: G02F1/1335
- IPC: G02F1/1335

Abstract:
In an embodiment, a display device comprises a display panel and a backlight unit. The backlight unit comprises a printed circuit, a light-emitting device on the printed circuit, and a transparent film including a holographic film. The holographic film includes at least an optical pattern overlapping the light-emitting device and modifying angle of a portion of light emitted by the light-emitting device. The backlight unit further comprises a light output pattern, where the portion of light with the modified angle passes through the light output pattern toward the display panel. The light output pattern may have a refractive index greater than a refractive index of the transparent film such that a refraction angle of the portion of light exiting the light output pattern is less than the incidence angle of the portion of light entering the light output pattern.
Public/Granted literature
- US10989961B2 Backlight unit and display device Public/Granted day:2021-04-27
Information query
IPC分类: