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:
Sep. 02, 2014
Filed:
Mar. 29, 2007
Frank W. Harris, Boca Raton, FL (US);
Jiaokai Alexander Jing, Uniontown, OH (US);
Ted Calvin Germroth, Kingsport, TN (US);
Xiaoliang Joe Zheng, Akron, OH (US);
Brian Michael King, Jonesborough, TN (US);
Dong Zhang, Uniontown, OH (US);
Thauming Kuo, Kingsport, TN (US);
Qifeng Zhou, Beijing, CN;
Frank W. Harris, Boca Raton, FL (US);
Jiaokai Alexander Jing, Uniontown, OH (US);
Ted Calvin Germroth, Kingsport, TN (US);
Xiaoliang Joe Zheng, Akron, OH (US);
Brian Michael King, Jonesborough, TN (US);
Dong Zhang, Uniontown, OH (US);
Thauming Kuo, Kingsport, TN (US);
Qifeng Zhou, Beijing, CN;
Akron Polymer Systems, Akron, OH (US);
Abstract
A multilayer optical retardation compensation film having at least one positive C-plate and at least one negative C-plate is used in an LCD device. The multilayer film may have a substantially flat wavelength dispersion curve, or the multilayer film combined with other layers in the LCD device may have a substantially flat wavelength dispersion curve. Polymer films for the positive C-plate may be identified according to their absorbance maxima at certain wavelength ranges.