Sharp Kabushiki Kaisha Corporation

Sakai Display Products Corporation

Sharp Corporation

Hiroshi Tsuchiya

Masanobu Mizusaki

Kiyoshi Minoura

Tsuyoshi Okazaki

Yozo Narutaki

Yuhki Kobayashi

Kohzoh Nakamura

Shinji Shimada

Masahiro Mitani

Ken Kuboki

Katsuhiko Kishimoto

Koichi Miyachi

Shinichi Kawato

Toshihiro Matsumoto

Isamu Miyake

Yusuke Nishihara

Akira Shibazaki

Seiji Tanuma

Taichi Sasaki

Satomi Hasegawa

Jumpei Takahashi

Takashi Satoh

Yuko Teraoka

Yuto Tsukamoto

Yoshito Hashimoto

Tokiyoshi Umeda

Masahiro Shimizu

Toshiaki Fujihara

Katsuya Ogawa

Yuichi Kita

Yuichi Iyama

Kenya Ito

Kazuhito Matsumoto

A display device includes a plurality of sub-pixels. The sub-pixels include, in common, a common hole-transport layer disposed between an anode and a light-emitting layer. Each sub-pixel individually includes an individual hole-transport layer disposed between the common hole-transport layer and the light-emitting layer. The common hole-transport layer is made of a first hole-transport-layer material. A sub-pixel has a first color and includes a first individual hole-transport layer made of a second hole-transport-layer material. A sub-pixel has a second color and includes a second individual hole-transport layer made of a mixed material of the first and second hole-transport-layer materials.

Display device, display device manufacturing method, display device manufacturing apparatus

In a light-emitting element, an energy level difference between a second hole transport layer and the light-emitting layer on a side closer to the second hole transport layer is greater than an energy level difference between the light-emitting layer on the side closer to the second hole transport layer and a layer in contact with a side closer to a cathode electrode of the light-emitting layer on the side closer to the second hole transport layer in LUMO level, and an energy level difference between a first electron transport layer and the light-emitting layer on a side closer to the first electron transport layer is greater than an energy level difference between the light-emitting layer on the side closer to the first electron transport layer and a layer in contact with a side closer to an anode electrode of the light-emitting layer on the side closer to the first electron transport layer in HOMO level.

Light-emitting element and light-emitting device

The present invention provides a liquid crystal alignment agent having high thermal stability and high solvent solubility, and a liquid crystal panel in which occurrence of ghosting and stain and a decrease in contrast are suppressed even under environments at high temperatures long period of time. The present invention is a liquid crystal alignment agent including a copolymer including a structure represented by a chemical formula (1) below, and a solvent. In the formula, X is a specified structure including a cyclic hydrocarbon group, Yis a specified structure including a cyclic hydrocarbon group, Rrepresents a homogeneous alignment group, a homeotropic alignment group, or a photoreactive functional group, and Zand Zare the same or different, and represent an &#x2014;NH&#x2014; group, an &#x2014;O&#x2014; group, or a &#x2014;S&#x2014; group. 

Liquid crystal alignment agent and liquid crystal panel

The present invention provides a liquid crystal display device that, with photo-alignment films, can maintain a favorable voltage holding ratio for a long period of time and prevent generation of image sticking and stains on the display screen. The liquid crystal display device includes: an active-matrix liquid crystal panel; and a backlight, the liquid crystal panel including a liquid crystal layer, paired substrates holding the liquid crystal layer in between, and alignment films disposed on the liquid crystal layer side surfaces of the respective substrates, the alignment films each being a photo-alignment film formed from a material exhibiting photo-alignment performance, the liquid crystal layer containing a liquid crystal material and a radical scavenger.

Liquid crystal display device

In the present embodiment, a sealing agent () sealing two substates contains a low melting-point glass material and is adhered to each of a first substrate () and a second substrate (), a barrier rib (), which is formed in such a manner as to surround the outer periphery of an electronic element (), is disposed between the sealing agent () and the electronic element (), and between the first substrate () and the second substrate (), and the sealing agent () is spaced apart from the barrier rib (). As a result, a deterioration of the electronic element, caused by the heat produced when sealing, may be prevented while the electronic element formed between the two substrates is protected from moisture and oxygen.

Substrate sealing structure body, and, display device and production method therefor

The present invention provides an alignment film capable of reducing generation of bubbles in a liquid crystal layer, a liquid crystal panel including the alignment film, and a method for producing the liquid crystal panel. The alignment film contains at least one selected from the group consisting of a polyamic acid containing a bisaniline fluorene skeleton and a polyimide containing a bisaniline fluorene skeleton. Preferably, the bisaniline fluorene skeleton of the polyamic acid is contained in a diamine unit of the polyamic acid and the bisaniline fluorene skeleton of the polyimide is contained in a diamine unit of the polyimide.

Alignment film, liquid crystal panel, and method for producing liquid crystal panel

The present invention provides a liquid crystal display device that can sufficiently prevent crystallization of a liquid crystal material at low temperatures, and thereby has high response performance suitable for applications such as HMDs. The liquid crystal display device includes: paired substrates; a liquid crystal layer held between the substrates; and a photo-alignment film disposed on a surface facing the liquid crystal layer of at least one of the substrates, the liquid crystal layer containing a liquid crystal material that has a nematic-isotropic phase transition temperature of 75&#xb0; C. or lower and a nematic phase temperature range narrower than 100&#xb0; C., the photo-alignment film containing a polymer, the polymer and/or another component of the photo-alignment film containing a hydrophobic group.

Liquid crystal display device and method for manufacturing same

The present invention provides a liquid crystal display device capable of maintaining a favorable voltage holding ratio and reducing occurrence of image sticking and stain and a decrease in contrast ratio in a high-temperature environment for a long time while including a photo-alignment film, and a method for manufacturing such a liquid crystal display device. The liquid crystal display device of the present invention includes paired substrates, a liquid crystal layer disposed between the substrates, a photo-alignment film disposed between at least one of the substrates and the liquid crystal layer, and a polymer layer disposed between the liquid crystal layer and the photo-alignment film. The photo-alignment film contains a polymer that contains a photo-reactive functional group. The polymer layer contains a polymer that has a structure derived from a specific polymerization initiator and a structure derived from a specific monomer.

Liquid crystal display device and method for manufacturing liquid crystal display device

The liquid crystal diffraction grating includes: paired substrates each including an electrode; a liquid crystal layer being held between the substrates; a sealant; and an alignment-controlling layer being disposed in a region surrounded by the sealant in a plan view and being in contact with the liquid crystal layer between the liquid crystal layer and each of the substrates, the alignment-controlling layer being configured to align liquid crystal molecules in a direction parallel to the substrates and containing a polymer of at least one monomer, the orientation of the liquid crystal molecules periodically rotating in at least one direction in a plan view of the liquid crystal layer in a state where the liquid crystal molecules are aligned in the direction parallel to the substrates.

Liquid crystal diffraction grating, liquid crystal composition, method for producing liquid crystal diffraction grating, and wire grid polarizer

The present invention provides a liquid crystal display device that can retain a favorable VHR and a low residual DC voltage and minimize display unevenness such as stains and image sticking, in long-term use at high temperatures. The liquid crystal display device includes a first substrate including a pixel electrode; a second substrate facing the first substrate; a liquid crystal layer sandwiched between the first substrate and the second substrate; an aromatic polyimide-based alignment film disposed on at least one of the first substrate and the second substrate; and a radical generator capable of supplying a radical to the liquid crystal layer upon being irradiated with light, the liquid crystal layer containing a liquid crystal compound with an alkenyl group, the aromatic polyimide-based alignment film containing at least one polymer selected from a polyimide and a polyamic acid and being in no contact with the pixel electrode, the at least one polymer containing an aromatic tetracarboxylic dianhydride monomer unit.

A display device according to one embodiment of the present invention is provided with a plurality of pixels which are arranged as a matrix on a substrate, and each of which is provided with a liquid crystal display element and an organic EL display element. The organic EL display element is provided with a positive electrode and a negative electrode, which are formed so as to be electrically separated from a pixel electrode and a counter electrode of the liquid crystal display element. Each one of the plurality of pixels is provided with: a first transistor which changes the magnitude of a current to be supplied to the organic EL display element on the basis of the potential of a first bus line; a second transistor which electrically separates the first bus line and the pixel electrode from each other on the basis of the potential of a third bus line; and a third transistor which electrically connects the first transistor and the second transistor with the first bus line on the basis of the potential of a second bus line. A method for driving a display device according to one embodiment of the present invention reduces the potential difference between the pixel electrode and the counter electrode before turning off the second transistor during switching from display by means of the liquid crystal display element to display by means of the organic EL display element.

Display device and method for driving display device

The scanning antenna () is a scanning antenna in which antenna units (U) are arranged, the scanning antenna comprising: a TFT substrate () including: a first dielectric substrate (), TFTs, gate bus lines, source bus lines, and patch electrodes (), a slot substrate () including: a second dielectric substrate (), and a slot electrode (); a liquid crystal layer (LC) provided between the TFT substrate and the slot substrate; a sealing portion that envelopes the liquid crystal layer; and a reflective conductive plate (). The slot electrode includes slots () arranged in correspondence with the plurality of patch electrodes. The sealing portion includes a main sealing portion (Fa) that defines an injection port (Fa) and an end sealing portion (Fa) that seals the injection port (Fa). The end sealing portion (Fa) is formed of a thermosetting sealant material.

Scanning antenna and method for manufacturing same

A display device includes a first substrate including a light-emitting element that is an upward light emission type and a transistor in a lower layer than the light-emitting element, a second substrate facing the first substrate, and a liquid crystal layer disposed between the first substrate and the second substrate. The first substrate includes a sealing film formed in an island shape and covering the light-emitting element and a pixel electrode that is transparent. The pixel electrode includes a first portion not overlapping the sealing film and a second portion overlapping the sealing film.

Display device

A reflective liquid crystal display device () including a reflection electrode (), a liquid crystal layer (), and a counter electrode () is formed above an insulating layer () in a first region (R) of a TFT substrate (). An organic EL display device () including a first electrode (), an organic layer (), and a second electrode () is formed on the insulating layer () of the TFT substrate () in a second region (T). A coating layer () is formed at least on a surface of the organic EL display device () so as to wrap the second electrode () and the organic layer () of the organic EL display device (). A part of the coating layer () is in contact with the insulating layer (). As a result, a complex display apparatus capable of preventing the organic layer from deteriorating and excellent in reliability can be obtained.

Growing community of inventors

Sakai, Japan

Hiroshi Tsuchiya