Invention Grant
- Patent Title: Multiplexing backlight with asymmetric turning film
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Application No.: US16346647Application Date: 2017-11-02
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Publication No.: US10955592B2Publication Date: 2021-03-23
- Inventor: Kenneth A. Epstein , Nicholas A. Johnson , Michael E. Lauters , Shannon L. Siefken , Gary T. Boyd
- Applicant: 3M INNOVATIVE PROPERTIES COMPANY
- Applicant Address: US MN St. Paul
- Assignee: 3M INNOVATIVE PROPERTIES COMPANY
- Current Assignee: 3M INNOVATIVE PROPERTIES COMPANY
- Current Assignee Address: US MN St. Paul
- Agent Michael Stern
- International Application: PCT/US2017/059660 WO 20171102
- International Announcement: WO2018/085497 WO 20180511
- Main IPC: G02B5/04
- IPC: G02B5/04 ; F21V5/08 ; G02F1/13 ; G02F1/13357

Abstract:
The disclosure describes asymmetric turning films (ATFs) that may be used in conjunction with multiple light sources in a liquid crystal display assembly to provide multiple different characteristic output distributions of light. In some examples, the ATFs include a structured surface defining a plurality of microstructures having two or more faces with each face configured to reflect light in different directions. The microstructure may define a microstructure axis and an angle gradient characterizing the rotation of the microstructure axis across the structured surface of the ATF.
Public/Granted literature
- US20200057343A1 MULTIPLEXING BACKLIGHT WITH ASYMMETRIC TURNING FILM Public/Granted day:2020-02-20
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