Matsushita Electric Industrial Co., Ltd.

Panasonic Corporation

Toshiba Matsushita Display Technology Co., Ltd.

Junko Asayama

Akio Takimoto

Hisahito Ogawa

Yasunori Kuratomi

Koji Akiyama

Hirofumi Wakemoto

Masaharu Terauchi

Yukio Tanaka

Tomohiro Okumura

Masanori Watanabe

Mitsuo Saitoh

Shigehiro Sato

Eiichiro Tanaka

Kazunori Komori

Fumiko Yokotani

Koji Nomura

Masashi Morita

Akifumi Ogiwara

Masatoshi Kitagawa

Takafumi Okuma

Takehiro Zukawa

Michihiro Miyauchi

Tsuyoshi Uemura

Kazuo Inoue

Kazuhiro Nishiyama

Yoshihiro Tomita

Ryoichi Takayama

Katsuhiko Kumagawa

Hiroyuki Yamakita

Masahiro Sakai

Ichiro Sato

Noriyasu Echigo

Masanori Kimura

Keisuke Okada

Atsushi Abe

Keisuke Tsuda

Noriyuki Kizu

Masaihiro Sakai

A method for restoring the function of a plasma display panel according to the present invention restores a function of a plasma display panel by raising the temperature of the plasma display panel to 400&#xb0; C. to 800&#xb0; C.

Method for restoring function of plasma display panel and plasma display panel

A fluorine-containing precoating is formed to cover a phosphor particle by, for example, a physical vapor deposition of a fluoride. Then, a fluorine-containing coating covering the phosphor particle is formed by supplying fluorine into the precoating. This obtained phosphor particle with the coating is applied in the form of a paste to a substrate on each electrode between two adjacent ribs to form a phosphor layer including phosphor particles between the ribs on the substrate. The substrate is positioned with respect to another substrate having electrodes thereon to form discharge spaces between the substrates. The discharge spaces are filled with a discharge gas to produce a plasma display panel.

Plasma display panel and process for producing the plasma display panel

The present invention is directed to provide, for example, a lighting device and an image display, with which higher luminance and others can be achieved. In order to achieve this object, an image display of the present invention is formed in a lighting device () including a light source (), a light guiding plate () that is disposed in such a manner that the light from the light source () is allowed to enter it through an end face () thereof, and a reflecting surface () that is opposed to one major surface () of the light guiding plate (), wherein the one major surface () of the light guiding plate () has a constant scattering layer () formed thereon which is adapted to transmit the incident light to scatter it at a predetermined rate, and the constant scattering layer () has a distribution and scattering structure () formed there on which is adapted to transmit the incident light to scatter it at a percentage that varies according to the distance from the above-mentioned light source ().

Method for manufacturing lighting device, image display, liquid crystal monitor, liquid crystal television, liquid crystal information terminal, and light guide plate

There are provided a PDP having a higher luminous efficiency and a process for producing the same. In a plasma display panel filled with a discharge gas between a front plate and a rear plate opposed to each other, the front platecomprises a glass substrate, electrodes(transparent electrodesand bus electrodes) on the glass substrate, the first dielectric layercovering the electrodesand the glass substrateand containing a fluorine atom, the second dielectric layercovering the first dielectric layerand containing a fluorine atom at a less amount than that in the first dielectric layer, and a protective layercovering the second dielectric layer

Plasma display panel and process for producing the same

The present invention aims at realizing a PDP and a mercury-free fluorescent lamp feasible to maintain excellent luminescent characteristics over long periods by suppressing time-lapse changes in luminescent characteristics of a phosphor that is excited by vacuum ultraviolet light to thereby emit light. To accomplish this object, the oxide phosphor of the invention comprises individual particles, each of which has a region at and near the surface thereof modified, and the elemental composition of the surface region is in a more oxidized state than that of the internal region of the particles. Alternatively, the surface region has more halogen or chalcogen in the elemental composition. In the phosphor treatment method of the invention, the surface region of individual phosphor particles is selectively modified by (i) forming a highly reactive gas atmosphere by exciting gas which contains reactive gas, and (ii) exposing the phosphor to the gas atmosphere.

Phosphor and treatment method for the same

Phosphors having high luminescence characteristics are provided while achieving manufacturing cost reductions by minimizing the usage amount of Eu, the luminescence center. Also provided are a display device (PDP, etc) and a fluorescent lamp having excellent display and/or luminescence characteristics as a result of using the phosphors, while achieving manufacturing cost reductions by minimizing the Eu usage amount.

Phosphors and related manufacturing method, display device, and fluorescent lamp

The invention provides an image display apparatus () comprising a lighting system (); a LCD element (); and an actuating means for varying the transmittance of the LCD element () according to image signals, wherein the LCD element () is designed such that when the angle of view with respect to a specified direction of a screen varies provided that the entire LCD element () is in a white display mode, transmittance varies such that it has peak values at viewing angles other than viewing angles in the vicinity of 0 degree, and wherein the lighting system () is designed such that the intensities of light beams emitted in the directions of the viewing angles in the vicinity of 0 degree are higher than the intensities of light beams emitted in the directions of the viewing angles at which the transmittance has a peak value.

Illuminator, image display comprising the same, liquid crystal television, liquid crystal monitor, and liquid crystal information terminal

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

In a display device according to a first aspect of the invention, luminance is not made substantially uniform over the entire display screen but rather imparted a luminance gradient such that luminance substantially monotonously decreases from the center of the screen towards the peripheral portion using a luminance gradient forming means, whereby power consumption is reduced compared to cases in which the entire screen shows substantially uniform luminance. In a second aspect of the invention, by optimizing gray level characteristics and thereby improving a viewer's impression of brightness, luminance gradient is made even less perceivable without increasing power consumption. These configurations provide large screen, low power consumption display devices.

Image display device

The disclosed spatial light modulator includes a pair of facing transparent electrodes, and a light-modulating layer and a photoconductive layer provided between the transparent electrodes In the spatial light modulator, the light-modulating layer has different optical states depending on an applied charge amount. Specifically, the light-modulating layer has: a first optical state when the applied charge amount is a first threshold charge amount or more; a second optical state when the applied charge amount is a second threshold charge amount or less; and a spatially uniform intermediate state between the first optical state and the second optical state depending on the applied charge amount. Also, a driving method for such a spatial light modulator is disclosed.

Growing community of inventors

Suita, Japan

Junko Asayama