Method for forming cholesteric liquid crystal layer and cholesteric liquid crystal layer, laminate, light guide element and image display device

摘要

Problem to be solved: to provide a cholesteric liquid crystal layer having good diffraction efficiency, a method of forming the same, a laminate using a cholesteric liquid crystal layer, a light guide element and an image display device.A cholesteric liquid crystal layer having a cholesteric liquid crystal phase fixed thereon;The orientation of the optical axis from the liquid crystal compound has a liquid crystal orientation pattern which is continuously changing while rotating continuously in at least one direction in the planeThe cross section observed in the SEM shows the central part and the dark part.In the slow phase axis or in the in-phase axis planeAn inclination angle in which the direction in which the in-plane retard is minimized is normal θ 2 θ 2 = n.sin φ Optical axis inclination angle (n = average refractive index of cholesteric liquid crystal layer). φ The absolute value ofResolve problems.Diagram