Invention Grant
- Patent Title: Light control film
- Patent Title (中): 光控膜
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Application No.: US12809358Application Date: 2008-12-08
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Publication No.: US08213082B2Publication Date: 2012-07-03
- Inventor: Gary E. Gaides , Michael E. Lauters
- Applicant: Gary E. Gaides , Michael E. Lauters
- 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 Kristofor L. Storvick
- International Application: PCT/US2008/085889 WO 20081208
- International Announcement: WO2009/085581 WO 20090709
- Main IPC: G03B21/56
- IPC: G03B21/56

Abstract:
Provided is a light control film and displays incorporating same. In particular, provided are light control films comprising a light input surface and a light output surface opposite the light input surface. The light control films further comprise alternating transmissive and absorptive regions disposed between the light input surface and the light output surface. Each transmissive region has an index of refraction N1, and each absorptive region having an index of refraction N2, where N2-N1 is not less than−0.005. The light control films have an average pitch of successive absorptive regions of 0.070 mm or less. Light incident to the light input surface exits the light output surface with a maximum relative brightness ratio (RBR) in a direction perpendicular to the light output surface of 65 or greater, and exits the light output surface with an effective polar viewing angle (EPVA) of 45° or less.
Public/Granted literature
- US20100271721A1 LIGHT CONTROL FILM Public/Granted day:2010-10-28
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