Hitachi, Ltd.

Fujitsu Hitachi Plasma Display Limited

Fujitsu Corporation

Renesas Electronics Corporation

Hitachi Plasma Patent Licensing Co., Ltd.

Hitachi Plasma Display Limited

Hiachi, Ltd.

Kenichi Yamamoto

Keizo Suzuki

Masatoshi Shiiki

Shirun Ho

Takashi Sasaki

Yoshimi Kawanami

Masayuki Shibata

Yusuke Yajima

Tomokatsu Kishi

Toshiyuki Nanto

Shinji Kanagu

Tetsuya Sakamoto

Yasuhiko Kunii

Kyoji Kariya

Takayuki Shimizu

Masashige Moritoki

Hiromi Sasaki

Tomotake Morita

Akihiro Fujimoto

Yasuhiro Wakabayashi

Atsushi Yokoyama

Yasunobu Hashimoto

Toshiaki Kusunoki

Ryohei Satoh

Tatsuya Miyake

Masaji Ishigaki

Norihiro Uemura

Yuichiro Kimura

Choichiro Okazaki

Michifumi Kawai

Kenji Okishiro

Yasuhide Yamamoto

Tomohiko Murase

Hisafumi Imura

Hideaki Okada

Teruo Nakazawa

Hideki Mikamoto

Yoshihisa Kimura

To improve performance of a semiconductor device. Over a semiconductor substrate, a gate electrode is formed via a first insulating film for a gate insulating film, and a second insulating film extends from over a side wall of the gate electrode to over the semiconductor substrate. Over the semiconductor substrate in a part exposed from the second insulating film, a semiconductor layer, which is an epitaxial layer for source/drain, is formed. The second insulating film has a part extending over the side wall of the gate electrode and a part extending over the semiconductor substrate, and a part of the semiconductor layer lies over the second insulating film in the part extending over the semiconductor substrate.

Semiconductor device and method of manufacturing the same

Semiconductor device with epitaxial semiconductor layer for source/drain on substrate, and method of manufacturing the same

An image display device for special uses which improves a color resolution of a particular color and increases a color reproducibility is provided. In the image display device, an area in which a gradient is gentle is provided to a partial region of a gamma curve denoted by a relationship of an input value (gray level) and an output value (luminance relative value) so that chromaticity points on chromaticity coordinates are unevenly distributed, thereby improving a chromatic resolving power (color resolution) of a particular color. In this manner, the color reproducibility of special monitors which display images of a particular color range represented by a monitor for remote metical care and a monitor for surgical operation can be improved.

Image display device

A disclosed plasma display includes a plasma display panel including cells and display electrodes including a group of X electrodes and a group of Y electrodes; an X electrode driving circuit configured to apply a sustaining pulse to the group of X electrodes; and a Y electrode driving circuit configured to apply a sustaining pulse to the group of Y electrodes. One of the X electrode driving circuit and the Y electrode driving circuit applies a low-voltage sustaining pulse that can cause the sustaining discharge by itself to a corresponding one of the group of X electrodes and the group of Y electrodes. The other one of the X electrode driving circuit and the Y electrode driving circuit applies a high-voltage sustaining pulse that can cause the sustaining discharge by itself to the other one of the group of X electrodes and the group of Y electrodes.

Plasma display and method for driving plasma display panel

A AC type plasma display apparatus has been disclosed, which satisfies various requirements such as the number of gradations that can be displayed, the display luminance, and the upper limit of power and, further, the efficiency of light emission and the luminance can be increased as much as possible and the display quality of which is not deteriorated. In the plasma display apparatus, a frame is composed of plural subfields, an image is displayed by causing a sustain discharge to occur in each subfield, the sustain discharge can be caused to occur by at least a first sustain waveform and a second sustain waveform different from the first sustain waveform, and the ratio of the first sustain waveform to the second sustain waveform changes, both waveforms being used to cause the sustain discharge to occur in each subfield.

Plasma display apparatus

A plasma display device includes a plasma display panel provided with plural discharge cells each having discharge gas, a pair of sustain electrodes which generate sustain discharge, and a phosphor, and a driving circuit which applies a sustain pulse voltage between the pair of sustain electrodes for generating the sustain discharge. The sustain pulse voltage is formed of a first portion having a main portion of a first voltage Vp and a second portion succeeding the first portion in time and having a main portion of a second voltage Vs higher than the first voltage Vp, the sustain discharge is formed of a pre-discharge and a main discharge succeeding the pre-discharge in time, and the first voltage Vp is selected to satisfy Vpmin&#x2266;Vp&#x3c;Vs, where Vpmin is a minimum of the first voltage Vp which stabilizes the sustain discharge.

Plasma display device

There is provided a plasma display device capable of high luminous efficacy and stable driving for displaying images at various image display load factors. The plasma display device performs the sustain discharge for a light-emission display, and is configured to apply a sustain pulse voltage between a sustain electrode pair in a respective one of the plural discharge cells to generate a sustain discharge in a respective one of the following operating modes selected based upon use of the plasma display device: (a) generating a pre-discharge and then a main discharge; (b) generating a main discharge without a pre-discharge preceding the main discharge; and (c) switching between the mode (a) and the mode (b). The sustain voltage waveforms are used which compensate for an increase in voltage drop due to an increase in discharge current when the image display load factor is excessively increased.

Plasma display device having improved luminous efficacy

A plasma display panel has plurality discharge cells disposed between a pair of opposing first and second substrates. Each of the discharge cells includes at least: at least one pair of electrodes for generating a discharge for display; a discharge gas; and a phosphor film for emitting visible light by being excited by ultraviolet light produced by the discharge of the discharge gas. Laminated members are dispersed in a plane within each of the discharge cells inside the first substrate from which visible light for display is emitted. Each of the laminated members includes a light absorption layer disposed on a side of the first substrate on which ambient light is incident and a light reflection layer disposed on a phosphor-film side of each of the laminated members.

Plasma display panels and plasma display devices which use the panel

A plasma display panel has a good productivity of partition formation and air exhaustion process and realizes a bright and stable display. A discharge gas is filled in a gap between two substrates. A mesh-patterned partition is arranged on the inner surface of one of the substrates for dividing the gap into plural squares corresponding to a cell arrangement. The partition has low portions forming a mesh-like air path that travels through all of the gas-filled space enclosed by the partition, in a plan view.A plasma display panel includes two spaced substrates defining a gap therebetween. The gap is divided by intersecting walls into columns and rows of discharge cells. Portions of a wall that are lower in height than remaining portions of the wall define a flow path. The plasma display panel realizes a bright and stable display.

Plasma display panel and method for manufacturing the same

A plasma display device is realized which has a high set-luminous-efficacy (i.e. provides a high-brightness display image at a low power consumption) and a high light-room contrast. The luminous efficacy hs and the display discharge voltage Vs are increased by increasing the product pd in discharge, or increasing the Xe proportion aXe of the discharge. As a result the display-discharge region area ratio Ad and the display region reflectance &#x3b2; can be reduced by reducing the display-electrode area Sse approximately in inverse proportion to Vs, and thereby the set-luminous efficacy hs and the set luminance Bpons and the light-room contrast Cb are increased.

Plasma display device having an improved contrast radio

In an information providing system, a condition notifying part is provided by a providing part to the user terminal with information that is in accordance with a request of the user terminal, is activated in a user terminal connecting to the information providing system via a network and notifies of a condition of the user terminal. In addition, a session management part manages session information in accordance with the condition of the user terminal notified by the condition notifying part activated in the user terminal. A session between the information providing system and the user terminal is established when the user is authenticated in accordance with authentication information from the user terminal and the session information managed by said session management part.

Information providing system and method for providing information

A plasma display device includes plural discharge cells each defined by a pair of first and second discharge-sustaining electrodes and an address electrode intersecting therewith. A driving method thereof includes period for addressing the discharge cells and thereby inducing address-discharge therein, and light-emission period for applying repetitive pulse voltages to at least one of the first and second discharge-sustaining electrodes such that the addressed ones of the discharge cells start and sustain main discharge depending upon the presence of the address-discharge to generate light. Second repetitive pulse voltages are applied to the address electrodes to generate pre-discharge, and rise in portions of the light-emission period during which an absolute value of a voltage difference between the first and second discharge-sustaining electrodes does not exceed 0.9&times;a maximum of an absolute value of a voltage difference between the first and second discharge-sustaining electrodes during the light-emission period.

Plasma display device and a method of driving the same

The plasma display device includes a plasma display panel having a plurality of discharge cells each having a pair of sustained discharge electrodes and and an address electrode . A voltage is applied to at least one of the sustained discharge electrodes and the address electrode in a sustained discharge period. A sustained discharge voltage is repeatedly applied to the sustained discharge electrodes and . The sustained discharge voltage has a voltage waveform with a rise period (Tr) from a first voltage level to a second voltage level, a sustained period (Tsus) for maintaining the second voltage level, a fall period (Tf) from the second voltage level to the first voltage level and a sustained period (Tg) for maintaining the first voltage level.

Control method applying voltage on plasma display device and plasma display panel

A plasma display panel has a good productivity of partition formation and air exhaustion process and realizes a bright and stable display. A discharge gas is filled in a gap between two substrates. A mesh-patterned partition is arranged on the inner surface of one of the substrates for dividing the gap into plural squares corresponding to a cell arrangement. The partition has low portions forming a mesh-like air path that travels through all of the gas-filled space enclosed by the partition, in a plan view.

Growing community of inventors

Higashimurayama, Japan

Kenichi Yamamoto