Patent ID: 8414794
Filing Date: 2013-04-09
Classification: C09K

Abstract:
1. A method for forming a blue phase liquid crystal composition, comprising: providing a positive liquid crystal (LC) component comprising at least one positive liquid crystal material, the positive LC component having a positive dielectric anisotropy and no blue phase properties with respect to a chiral dopant; providing a negative liquid crystal component comprising at least one negative liquid crystal material, the negative LC component having a negative dielectric anisotropy and no blue phase properties with respect to said chiral dopant; blending said positive liquid crystal component and said negative liquid crystal component to form a liquid crystal blend having a dielectric anisotropy between 0.5 and 14; and adding said chiral dopant to said liquid crystal blend to form a blue phase liquid crystal composition so that said blue phase liquid crystal composition has a blue phase temperature range larger than 3° C.