LIQUID CRYSTAL ALIGNMENT LAYER

摘要

PROBLEM TO BE SOLVED: To provide a liquid crystal alignment layer which obviates the deterio ration in its electrical characteristics in photoirradiated parts in spite of irradia tion of the surface of this liquid crystal alignment layer with light, is free from the problem of after images and has good visual field angle characteristics. SOLUTION: The liquid crystal alignment layer which has aligned liquid crystal molecules used in an liquid crystal display element has the parts which are formed by irradiating the prescribed points of its surface with the light and are different in the capability to incline the liquid crystal molecules from the non-irradiated parts. The internal offset voltage (Vcdc shift value) generated when the photoirradiated parts and the non-irradiated parts are disposed to face each other and voltage is impressed thereon is specified to >=100mV. The Vcdc shift value of >=l00mV is attained by adding a suitable amt. of UV absorbents, such as a benzophenone based UV absorbent, benzotriazole based UV absorbent and the metal salt of dialkyl dithiocarbamic acid, to the liquid crystal alignment layer.