The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 05, 2005
Filed:
Sep. 21, 2001
Christopher C. Bowley, Somerville, MA (US);
Ikuko Ebihara, St. Paul, MN (US);
Gregory Edward Gilligan, Hastings, MN (US);
Richard John Pokorny, Oakdale, MN (US);
Marc Dudley Radcliffe, Newport, MN (US);
Prabhakara Satyauolu Rao, Oakdale, MN (US);
Philip Edwin Watson, Oakdale, MN (US);
Christopher C. Bowley, Somerville, MA (US);
Ikuko Ebihara, St. Paul, MN (US);
Gregory Edward Gilligan, Hastings, MN (US);
Richard John Pokorny, Oakdale, MN (US);
Marc Dudley Radcliffe, Newport, MN (US);
Prabhakara Satyauolu Rao, Oakdale, MN (US);
Philip Edwin Watson, Oakdale, MN (US);
3M Innovative Properties Company, St. Paul, MN (US);
Abstract
An optical body includes a) first particles comprising a first cholesteric liquid crystal material and b) a second cholesteric liquid crystal material. The first particles and the second cholesteric liquid crystal material form a structure where the first cholesteric liquid crystal material has a pitch that is different than the second cholesteric liquid crystal material. In one example, the second cholesteric liquid crystal material is in the form of second particles. In another example, the first particles are dispersed in a matrix of the second cholesteric liquid crystal material. In other examples, the optical body has more than one layer. In addition, one or more additional cholesteric liquid crystal materials can be used in the optical body. These optical bodies can be used as a reflective polarizer and can be used in a display.