Panasonic Liquid Crystal Display Co., Ltd.

Hitachi, Ltd.

Japan Display Inc.

Hitachi Displays, Ltd.

Panasonic Intellectual Property Corporation of America

Kasei Optonix, Ltd.

Shoichi Uchino

Noboru Kunimatsu

Hidehiro Sonoda

Yuko Matsumoto

Chikae Matsui

Tomio Yaguchi

Saburo Nonogaki

Yasushi Tomioka

Masaki Matsumori

Nobuaki Hayashi

Toshihiko Tanaka

Hajime Morishita

Naoko Asai

Jun Tanaka

Akiko Iwata

Toshiki Kaneko

Susumu Sasaki

Hitoshi Azuma

Masahiro Nishizawa

Motoo Akagi

Takao Ebine

Yoshifumi Tomita

Kiyoshi Miura

Takahiro Kohashi

Katsuyuu Takahashi

Hiroshi Yokomizo

Toshikatsu Manabe

Osamu Sasaya

Takahiko Muneyoshi

Shigeyuki Nishitani

Masahiro Tanaka

Kiyoshige Kinugawa

Makoto Okai

Takumi Ueno

Michiaki Hashimoto

Tetsuya Yamazaki

Takao Iwayanagi

Akiko Yasukawa

Susumu Ohmatoi

Emiko Yamada

Disclosed is a manufacturing method of a liquid crystal display device which is a manufacturing method of a liquid crystal display device including a liquid crystal alignment film to which an alignment regulating force is imparted by a photo-alignment treatment, including: a film forming step of forming a film containing a polymer whose main chain is cleaved by irradiation with light; a photo-alignment step of imparting an alignment regulating force to the film formed in the film forming step by irradiation of the film with light in an atmosphere of a temperature lower than 100° C.; and a removing step of removing a low-molecular weight component generated by cleaving the main chain of the polymer through the light irradiation after the light irradiation. Also disclosed is a liquid crystal display device manufactured by the manufacturing method.

Liquid crystal display device and manufacturing method thereof

Disclosed is a manufacturing method of a liquid crystal display device which is a manufacturing method of a liquid crystal display device including a liquid crystal alignment film to which an alignment regulating force is imparted by a photo-alignment treatment, including: a film forming step of forming a film containing a polymer whose main chain is cleaved by irradiation with light; a photo-alignment step of imparting an alignment regulating force to the film formed in the film forming step by irradiation of the film with light in an atmosphere of a temperature lower than 100&#xb0; C.; and a removing step of removing a low-molecular weight component generated by cleaving the main chain of the polymer through the light irradiation after the light irradiation. Also disclosed is a liquid crystal display device manufactured by the manufacturing method.

A liquid crystal display device includes a TFT substrate having a first alignment film and an opposing substrate having a second alignment film with liquid crystals sandwiched therebetween. One of the first and second alignment films, comprises a first polyimide produced via polyamide acid ester containing cyclobutane as a precursor and a second polyimide produced via polyamide acid as a precursor. The polyamide acid has a higher polarity than that of the polyamide acid ester. The one of the first and second alignment films is responsive to photo-alignment. A first side of the one of the first and second alignment films is adjacent to the liquid crystals, and a second side thereof is closer to one of the TFT substrate and the counter substrate than the first side. The first side contains more of the first polyimide and less of the second polyimide than the second side.

Liquid crystal display device

To form an optical alignment film having large anchoring strength and suppress an AC afterimage of a liquid crystal display device, in a liquid crystal display device of an IPS mode. In an alignment film material subjected to optical alignment processing, polyimide which becomes a rigid high molecule and polyimide which becomes a flexible high molecule are mixed and used. The material of the present invention can easily rotate oligomer after irradiating polarized ultraviolet rays and improve a UV-absorbed two-color ratio of an alignment film. Accordingly, an anchoring strength for liquid crystals by the alignment film is large to suppress an AC afterimage.

Liquid crystal display device and alignment film material thereof

Liquid crystal display device having an alignment film produced via polyamide acid ester and polyamide acid as precursors

A method for fabricating a liquid crystal display device including a TFT substrate having an alignment film formed thereon, an opposing substrate, and a liquid crystal layer sandwiched therebetween. The alignment film on the TFT substrate includes a photolytic polymer made from a first precursor including cyclobutane, and a non-photolytic polymer made from a second precursor. The method includes the steps of depositing a mixture material including the first precursor and the second precursor in which the second precursor settles more on an upper surface of the TFT substrate than the first precursor, imidizing the mixture material, and irradiating the mixture material with ultraviolet light for photo-alignment, and after irradiating, heating the mixture material to form the alignment film.

Liquid crystal display device comprising an alignment film having a volume resistivity on one side that is greater than a volume resistivity on another side

A liquid crystal display device includes a first substrate and a second substrate which sandwiches a liquid crystal between itself and the first substrate, wherein the first substrate has thin film transistors and a wiring connection portion in which are formed terminals connected to the thin film transistors, a wiring substrate connected to the terminals is disposed in the wiring connection portion, the second substrate is a plastic substrate, and has an adhesive layer and an inorganic insulating layer formed on top of the adhesive layer, and the adhesive layer covers the wiring connection portion and one portion of the wiring substrate.

Display device with a base material made of plastic

A liquid crystal display device includes: a pair of substrates at least one of which is transparent; a liquid crystal layer disposed between the pair of substrates; an electrode group formed on at least one substrate of the pair of substrates, for applying an electric field to the liquid crystal layer; a plurality of active elements connected to the electrode group; and a liquid crystal alignment film disposed on at least one substrate of the pair of substrates, in which the liquid crystal alignment film, which is formed by a photo-alignment process, contains polyimide formed using tetracarboxylic acid dianhydride and/or diamine each having a specific chemical structure.

Method for fabricating a liquid crystal display device comprising an alignment film that includes a photolytic polymer and a non-photolytic polymer

Growing community of inventors

Annaka, Japan

Shoichi Uchino