Abstract:
PROBLEM TO BE SOLVED: To form a liquid crystal alignment layer having good adhesiveness to a substrate.SOLUTION: A polymer (A) having a photo-aligning group, which is at least one compound selected from a group consisting of (meth)acrylic polymers and polyorganosiloxane, and a silane compound (B) having at least one functional group selected from a group consisting of a (meth)acryloxy group, vinyl group, isocyanate group, amino group, thiol group and epoxy group, are incorporated into a liquid crystal aligning agent. The content of the silane compound (B) is preferably 10 to 300 parts by weight with respect to 100 parts by weight of the polymer (A).
Abstract:
PROBLEM TO BE SOLVED: To provide a liquid crystal aligning material excellent in adhesiveness with a base film and suitable for a retardation film of a liquid crystal display element.SOLUTION: The liquid crystal aligning agent comprises inorganic oxide particles in which a group having a cinnamic acid structure is bonded to the particle surface. The liquid crystal aligning agent exhibits good adhesiveness and liquid crystal aligning property at a low treatment temperature, and thereby, even when a base film having low heat resistance is used, a retardation film with high quality can be obtained without decreasing characteristics of the film.
Abstract:
PROBLEM TO BE SOLVED: To provide a liquid crystal aligning agent which can give a liquid crystal display element having high liquid crystal alignment regulating force, excellent image persistence characteristics and excellent electric characteristics.SOLUTION: The liquid crystal aligning agent comprises a polymer such as a polyamic acid obtained by reacting a tetracarboxylic acid dianhydride with diamine, in which 60 mol% or more in the tetracarboxylic acid dianhydride comprises a tetracarboxylic acid dianhydride having an alicyclic structure having 5 or more members in the ring, and a compound represented by formula (1) described below is included as the diamine. In the formula, A represents a single bond or a divalent organic group; B represents a divalent organic group; Rrepresents a substituent; and n represents an integer of 0 to 4.
Abstract:
PROBLEM TO BE SOLVED: To provide a liquid crystal aligning agent from which a liquid crystal aligned layer showing good property for aligning liquid crystal and having excellent adhesiveness to a liquid crystal layer can be formed, and to provide a liquid crystal aligned layer formed of the liquid crystal aligning agent, a retardation film having the liquid crystal aligned layer and a method for manufacturing the retardation film, a liquid crystal display element including the retardation film, and a polymer that is a suitable component for the liquid crystal aligning agent.SOLUTION: The liquid crystal aligning agent contains [A] a component having a photo-aligning group and a group including polymerizable double bond in the same or different molecules. The component [A] is preferably a polymer component. The photo-aligning group is preferably a group containing a cinnamic acid structure. The liquid crystal aligned layer is formed of the liquid crystal aligning agent. The retardation film includes the liquid crystal aligned layer. The retardation film is preferably used in a liquid crystal display element. The liquid crystal display element of the present invention includes the retardation film.
Abstract:
PROBLEM TO BE SOLVED: To provide a liquid crystal aligning agent capable of forming a liquid crystal alignment film excellent in maintenance of liquid crystal aligning performance and electric characteristics especially when exposed to light for a long period of time after continuous driving for a long time in a PSA liquid crystal display element, and to provide a liquid crystal aligning agent capable of solving the above problem especially in a liquid crystal display element of a lateral electric field system such as an IPS mode and an FFS mode, and a liquid crystal alignment film formed by using the same and a liquid crystal display element.SOLUTION: There is provided a liquid crystal aligning agent for forming a liquid crystal alignment film in a PSA liquid crystal display element, which comprises at least one polymer selected from the group consisting of [A] a polyorganosiloxane having a photo-alignment group, [B] a polymer having a photo-alignment group in the main chain and [C] a polyamic acid having decomposition type photo-alignment properties and/or a polyimide.
Abstract:
PROBLEM TO BE SOLVED: To provide a liquid crystal aligning agent that allows formation of a liquid crystal aligning film for retardation film that enables optical alignment even by a small amount of radiation and requires no heating process during irradiation and thereafter, and a retardation film that includes the liquid crystal aligning film for retardation film and is excellent in liquid crystal alignment property and thermal stability and a method of manufacturing the same.SOLUTION: A liquid crystal aligning agent for retardation film contains [A] cellulose including a group having a cinnamic acid structure, in which [A] cellulose is represented by formula (1).
Abstract:
PROBLEM TO BE SOLVED: To provide a liquid crystal aligning agent excellent in storage stability, to provide a liquid crystal aligned layer, which is produced by using the liquid crystal aligning agent and is excellent in adhesiveness to a substrate film, in film hardness and in liquid crystal aligning property even when the layer is subjected to heat treatment at a low temperature in a short time, and to provide a retardation film having the liquid crystal aligned layer, a method for producing a retardation film, and a liquid crystal display element.SOLUTION: A liquid crystal aligning agent contains: [A] a component having an epoxy group and a hydrogen donor in the same or different molecules; and [B] a metal chelate compound. The [A] component preferably contains (a1) a polymer having an epoxy group and (a2) a curing accelerator having a hydrogen donor.