Invention Grant
- Patent Title: Hemispherical coating method for micro-elements
- Patent Title (中): 微球半球形涂层法
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Application No.: US12004746Application Date: 2007-12-21
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Publication No.: US08501272B2Publication Date: 2013-08-06
- Inventor: Yelena Lipovetskaya , Brian Gobrogge
- Applicant: Yelena Lipovetskaya , Brian Gobrogge
- Applicant Address: US CA Santa Barbara
- Assignee: Cospheric LLC
- Current Assignee: Cospheric LLC
- Current Assignee Address: US CA Santa Barbara
- Agency: Weaver Austin Villeneuve & Sampson LLP
- Main IPC: B05D7/00
- IPC: B05D7/00 ; B05D5/06 ; B05D1/18 ; G01N1/28

Abstract:
Optically anisotropic spheres that can be used as pixel elements in rotating element displays are fabricated by partially (e.g., hemispherically) coating a plurality of spheres by transfer coating methods. Typically, a monolayer of spaced apart monochromal (e.g., white) spheres is formed on a support surface by, for example, making use of a removable template matrix. Next, a uniform layer of viscous coating material (e.g., black coating) is applied to the monolayer of spheres to transfer at least some of the coating material onto the surface of spheres in a monolayer. The obtained partially coated spheres are optionally cured by a UV or thermal exposure and are then removed from the support substrate. In some embodiments, coating material also provides electrical anisotropy to the spheres. Transfer coating methods result in improved precision of hemispherical coating and allow use of environmentally robust pixel elements.
Public/Granted literature
- US20120135138A1 Hemispherical coating method for micro-elements Public/Granted day:2012-05-31
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