Patent ID: 8298631
Filing Date: 2012-10-30
Classification: C09K,G02B

Abstract:
1. A cholesteric liquid crystal composition comprising a nematic liquid crystal compound having at least two reactive groups, one or more species of chiral agent, and a compound (B) each molecule of which has one reactive group, wherein said composition has: a refraction index anisotropy Δn value of 0.18 or more, and a property wherein an absolute value of a temperature dependency parameter δλ is 0.50 or less as measured using a value “a” of 25 and a value “b” of 100, wherein said parameter δλ is calculated by the formula (1): wherein “a” and “b” represent temperatures (° C.), λa represents a selective reflection center wavelength (nm) of said liquid crystal composition at “a” ° C., λb represents a selective reflection center wavelength (nm) of said liquid crystal composition at “b” ° C.