Akron Polymer Systems, Inc.

Qifeng Zhou

Thauming Kuo

Frank Wayne Harris

Dong Zhang

Ted Germroth

Jiaokai Jing

Xiaoliang Joe Zheng

Brian Michael King

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.

Liquid crystal display having improved wavelength dispersion characteristics

Optical compensation films (positive C-plate) with mesogen anisotropic subunits (OASUs) that have high positive birefringence throughout the wavelength range 400 nm&#x3c;&#x3bb;&#x3c;800 nm are provided. The optical compensation films may be processed by solution casting to yield a polymer film with high birefringence without the need for stretching, photopolymerization, or other processes. Such optical compensation films are suitable for use as a positive C-plate in LCDs, particularly IPS-LCDs.

Optical compensation films with mesogen groups for liquid crystal display

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Beijing, China

Qifeng Zhou