Matsushita Electric Industrial Co., Ltd.

Japan Display Inc.

Kabushiki Kaisha Toshiba

Toshiba Matsushita Display Technology Co., Ltd.

Japan Display Central Inc.

Hirofumi Wakemoto

Kenji Nakao

Tetsuya Kojima

Shoichi Ishihara

Daiichi Suzuki

Shigehiro Sato

Akio Takimoto

Junko Asayama

Keisuke Tsuda

Yukio Tanaka

Masanori Watanabe

Mitsutaka Okita

Hisahito Ogawa

Eiichiro Tanaka

Fumiko Yokotani

Rei Hasegawa

Tetsuo Fukami

Yuko Kizu

Yukio Kizaki

Yoshinori Tanaka

Katsuhiko Kumagawa

Toshiyuki Higano

Ichiro Sato

Masao Yamamoto

Masanori Kimura

Katsuji Hattori

Keizo Nakajima

Yoshihiro Matsuo

Junji Nakajima

Hideaki Mochizuki

Shinji Ogawa

Junichi Kobayashi

Tsuyoshi Uemura

Kazuhiro Nishiyama

Kazuo Inoue

Yoshinori Kobayashi

Hirofumi Kubota

Hiroyuki Yamakita

Youichi Asakawa

Yoneharu Takubo

Akinori Shiota

Katsuyuki Arimoto

Kazunori Komori

Hiroshi Satani

Naoya Kubota

Noriyuki Kizu

According to one embodiment, a display device includes a first substrate, a second substrate, a sealant, a liquid crystal layer, an organic insulating film, an alignment film and an inorganic insulating film. The second substrate is opposed to the first substrate. The sealant attaches the first substrate and the second substrate to each other. The liquid crystal layer is arranged between the first substrate and the second substrate. The organic insulating film, the alignment film and the inorganic insulating film are provided on the first substrate. The alignment film contacts the liquid crystal layer. The inorganic insulating film is located between the alignment film and the organic insulating film. At least part of the alignment film contacts the organic insulating film.

Display device

According to one embodiment, the organic insulating film and the alignment film are provided on the first substrate. The alignment film is located between the liquid crystal layer and the organic insulating film and contacts the liquid crystal layer. The organic insulating film has a restricting portion on an inner side from the sealant and on an outer side from the display area. The restricting portion includes a recess and a projection extending in predetermined directions. The alignment film is formed on the restricting portion.

Display device with organic insulating film having recess and projection

According to one embodiment, a display device includes a first substrate, a second substrate, a sealant, a liquid crystal layer, an organic insulating film, an alignment film and an inorganic insulating film. The second substrate is opposed to the first substrate. The sealant attaches the first substrate and the second substrate to each other. The liquid crystal layer is arranged between the first substrate and the second substrate. The organic insulating film, the alignment film and the inorganic insulating film are provided on the first substrate. The alignment film contacts the liquid crystal layer. The inorganic insulating film is located between the alignment film and the organic insulating film. At least pan of the alignment film contacts the organic insulating film.

According to one embodiment, a liquid crystal display device includes an array substrate, a counter substrate, a liquid crystal layer and a driving unit. The driving unit is configured to perform polarity inversion driving by applying, to the pixel electrode, positive and negative video signals. When applying the video signals to the pixel electrode, the driving unit superposes a correction signal corresponding to a polarity inversion frequency and the gray level on the video signals in advance.

Liquid crystal display device and method of driving the same

According to one embodiment, a display device includes a display panel including a gate line, source lines, and switching elements connected to the gate line and the respective source lines. A gate driver selects the gate line. A source driver supplies an image signal to the source lines. The image signals can be supplied to pixel electrodes through the switching elements. A frame period includes a first scan period in which the gate line is selected, a first hold period subsequent to the first scan period, a second scan period in which the gate line is selected subsequent to the first hold period, and a second hold period subsequent to the second scan period. The first hold period is longer than the second hold period.

Display device having a main writing and additional writing periods

According to one embodiment, a liquid crystal display device includes, a first substrate including a common electrode, a pixel electrode in which a slit facing the common electrode is formed, and a first alignment film, a second substrate including a second alignment film, and a liquid crystal layer which is held between the first alignment film and the second alignment film and is formed of a material having a dielectric constant anisotropy in a range of +3.3 or more to +5.3 or less at a transition temperature of 75&#xb0; C.

Liquid crystal display device comprising a first alignment film having an alignment treatment in a direction crossing a major axis of a slit of a pixel electrode wherein a liquid crystal layer has a transition temperature of 75&#xb0; C

A device includes a substrate including a first insulating substrate, a first electrode located on the first insulating substrate, and a second electrode located between the first insulating substrate and the first electrode via an insulating underlayer interposed between the second and the first electrode, a substrate including a second insulating substrate and a third electrode on the second insulating substrate, a liquid crystal layer which is held between the first and the third electrode and which exhibits a transition from a first state to a second state in an initializing process, and a voltage supply unit which supplies, a first voltage to the first and the second electrodes and a second voltage to the third electrode, wherein the first electrode includes a transition nucleus forming section which forms nuclei of the transition in the liquid crystal layer on the basis of the respective voltages supplied to the respective electrodes.

OCB mode liquid crystal display with transition nucleus forming section

After supply of power, a liquid crystal display device performing transition from a first state to a second state different from the first state before a display operation is provided with a transition nucleus forming portion around a pixel electrode or inside. The transition nucleus forming portion performs transition to the second state prior to other portion during a transition drive period. The transition nucleus forming portion of the pixel electrode has an edge portion formed into a reverse taper shape decreasing in its thickness toward the tip end. Therefore, transition from a splay alignment to a bend alignment is performed with simple element and drive circuit configuration in all pixels.

Liquid crystal display device comprising a pixel electrode having a reverse taper shape with an edge portion that forms a transition nucleus in a liquid crystal layer

A liquid crystal display includes an insulating substrate, an alignment layer covering a main surface of the insulating substrate, and electrodes interposed therebetween. The alignment layer defines an alignment direction parallel to the main surface, an upstream side as one end's side of the alignment direction, and a downstream side as another end's side of the alignment direction, and tilts liquid crystal molecules toward the downstream side. Each electrode includes an upstream section that includes a first edge facing the upstream side and a downstream section that includes a second edge facing the downstream side and is provided with a recess recessed relative to the second edge. The first recess forms on the downstream section a third edge extending in the alignment direction and a fourth edge connecting the third edge to the second edge and facing the upstream side.

Liquid crystal display

An OCB mode liquid crystal display panel comprises a pair of electrode substrates, a liquid crystal layer which is held between the pair of electrode substrates and has liquid crystal molecules whose alignment state is controlled within a display area by a drive voltage applied from the electrode substrates, and a pair of alignment films which are disposed on the electrode substrates in contact with the liquid crystal layer and whose rubbing directions are set parallel to each other. The display area includes a plurality of pixels arrayed in a matrix, and the rubbing directions of the alignment films are substantially opposite to a scanning direction in which rows of the pixels are sequentially selected for application of the drive voltage in a display operation.

Liquid crystal display panel and method for driving the same

An OCB mode liquid crystal display panel comprises a pair of electrode substrates, a liquid crystal layer which is held between the pair of electrode substrates and has liquid crystal molecules whose alignment state is controlled within a display area by a drive voltage applied from the electrode substrates, and a pair of alignment films which are disposed on the electrode substrates in contact with the liquid crystal layer and whose rubbing directions are set parallel to each other. The rubbing directions of the pair of alignment films are oriented toward a side of a main diffusion source of impurity ions.

Liquid crystal display panel in which the rubbing directions of the pair of alignment films are oriented toward a side of a main diffusion source of impurity ions

A liquid crystal display of the present invention is adapted to perform initialization by inputting voltages with different polarities to two pixel electrodes () adjacent in front and back direction. It is preferable that in the two pixel electrodes () adjacent in front and back direction, the pixel electrode () located on back side is provided with a first protrusion () at a front side and back direction, the pixel electrode () adjacent in front and back is provided with a second protrusion () located on front side is provided with a second a second protrusion () on a back side edge ()thereof.

Liquid crystal display and its driving method

Method for manufacturing an in-plane electric field mode liquid crystal element

Growing community of inventors

Kanazawa, Japan

Hirofumi Wakemoto