Invention Grant
- Patent Title: Higher transmission light control film comprising a transmissive region and an absorptive region each having a different index of refraction
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Application No.: US15092033Application Date: 2016-04-06
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Publication No.: US09804311B2Publication Date: 2017-10-31
- Inventor: Gary E. Gaides , Kenneth A. Epstein
- Applicant: 3M INNOVATIVE PROPERTIES COMPANY
- Applicant Address: US MN Saint Paul
- Assignee: 3M INNOVATIVE PROPERTIES COMPANY
- Current Assignee: 3M INNOVATIVE PROPERTIES COMPANY
- Current Assignee Address: US MN Saint Paul
- Agent Daniel J. Iden
- Main IPC: G02B5/30
- IPC: G02B5/30 ; G02B5/02

Abstract:
A light control film, and light collimating assemblies and liquid crystal displays incorporating such light control films are described. The light control film includes alternating transmissive and absorptive regions, where the refractive index of each transmissive region is greater than the refractive index of each absorptive region. The absorptive regions form interfaces at angles that are close to the perpendicular to the light control film. A portion of the incident light intercepting the absorptive region undergoes Total Internal Reflection, and is transmitted through the film. The axial brightness of light passing through the film is increased, the brightness is more uniform within the viewing angle, and the viewing cutoff angle is sharpened.
Public/Granted literature
- US20160216420A1 HIGHER TRANSMISSION LIGHT CONTROL FILM Public/Granted day:2016-07-28
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