Sharp Kabushiki Kaisha Corporation

Yuko Teraoka

Koichi Miyachi

Masanobu Mizusaki

Isamu Miyake

Tsuyoshi Okazaki

Hiroshi Tsuchiya

Shinichi Terashita

Kiyoshi Minoura

Hiroyuki Hakoi

The present invention provides a liquid crystal display device with a high degree of freedom in molecular structure design of an alignment film and with reduced image sticking. The liquid crystal display device includes a pair of substrates; a liquid crystal layer held between the substrates; an alignment film disposed on a liquid crystal layer side surface of at least one of the substrates; and a polymer layer disposed between the liquid crystal layer and the alignment film, the alignment film containing a first polymer containing at least one structure represented by the following formula (1) in a side chain, wherein Rrepresents a C3-C6 branched or cyclic alkylene group, and a hydrogen atom at a para position to a carbonyl group in the phenyl group is optionally replaced.

Liquid crystal display device

A liquid crystal display device includes: a first polarizing plate; a first substrate; a first vertical alignment film; a liquid crystal layer; a second vertical alignment film; a second substrate; and a second polarizing plate, wherein a first retardation layer is disposed between the first polarizing plate and the liquid crystal layer and includes first and second areas having mutually different in-plane phase differences, a second retardation layer is disposed between the second polarizing plate and the liquid crystal layer and includes third and fourth areas having mutually different in-plane phase differences, the first and third areas overlap boundaries between at least four domains of liquid crystal molecules in a pixel region and have an in-plane phase difference in a predetermined range, and in-plane slow axes of the first and third areas and absorption axes of the first and second polarizing plates each have a predetermined azimuth.

A substrate provided with an alignment film includes: a substrate including an electrode on a surface thereof; and an alignment film in contact with the electrode. The alignment film contains a first polymer that contains a polysiloxane structure in a side chain and a second polymer that contains a photo-reactive group or a vertically aligning functional group. The alignment film includes a first surface that is placed on a side close to the electrode and contains the first polymer and a second surface that is placed on a side opposite to the first surface and contains the second polymer. The first polymer has a weight that is equal to or greater than a weight of the second polymer in the alignment film.

Substrate provided with alignment film and liquid crystal display device

The present invention aims to provide a liquid crystal display device in which image sticking and stains are sufficiently reduced. The present invention relates to an alignment film including: a polymer, wherein the polymer is a polysiloxane or a polyvinyl and contains a silsesquioxane group. The present invention also relates to a polymer for use in the alignment film, the polymer containing a silsesquioxane group. The present invention also relates to a liquid crystal display device including: the alignment film; a pair of substrates; and a liquid crystal layer disposed between the substrates, wherein the alignment film is disposed between at least one of the substrates and the liquid crystal layer.

Oriented film, polymer, and liquid crystal display device

A liquid crystal display device includes: a pair of substrates; a liquid crystal layer between the pair of substrates; and an alignment film between at least one of the pair of substrates and the liquid crystal layer, wherein the alignment film includes a first and second component, wherein the first component is a polymer in which at least two types of liquid crystal orientation side chains are bonded to a polysiloxane main chain, wherein the second component is made of at least one of a polyamic acid and a polyimide, wherein the at least two types of liquid crystal orientation side chains include a first side chain having on an end thereof a fluorine atom, and a second side chain that does not have on an end thereof a fluorine atom, wherein a proportion of the first component to a total amount of the second component is 2 mass % or greater, and wherein, in the liquid crystal display device, liquid crystal is sealed between the pair of substrates by a One Drop Fill scheme.

Liquid crystal display device and method for manufacuring same

The present invention provides a method for manufacturing a liquid crystal display device capable of suppressing display unevenness around a seal in the case of performing PS treatment on a horizontal alignment film formed from a photoactive material. The method for manufacturing a liquid crystal display device of the present invention includes the steps of: forming a horizontal alignment film containing a photoactive material on at least one substrate of a pair of substrates; dropping a liquid crystal composition containing a liquid crystal material and a monomer on one of the pair of substrates, the monomer being contained in an amount of 1.0% by weight or less in the whole liquid crystal composition; curing a sealing material applied to one substrate of the pair of substrates along an outer edge thereof by irradiating the sealing material with light whose wavelength is 40 nm or more longer than an absorption wavelength edge of the monomer; and forming a polymer layer that controls the alignment of liquid crystal molecules adjacent thereto on the horizontal alignment film by irradiating the liquid crystal composition sealed between the pair of substrates with light to polymerize the monomer.

Method for manufacturing liquid crystal display device

A liquid crystal display device suppresses generation of image sticking in AC mode. A liquid crystal display device comprises an alignment film arranged on at least one of a pair of substrates. The alignment film comprises a polymer containing a first constitutional unit and a second constitutional unit. The first constitutional unit controls alignment of the liquid crystal molecules by photoirradiation. The second constitutional unit controls alignment of the liquid crystal molecules regardless of photoirradiation.

Liquid crystal display device and polymer for alignment film materials

The present invention provides a liquid crystal display device capable of suppressing generation of the image sticking in AC mode and a polymer for alignment film materials. The present invention is a liquid crystal display device including:

Growing community of inventors

Sakai, Japan

Yuko Teraoka