Matsushita Electric Industrial Co., Ltd.

Kao Corporation

Other

Panasonic Corporation

Kyocera Corporation

Matsushita Electric Industries, Inc.

Koji Akiyama

Akio Takimoto

Hisahito Ogawa

Masaaki Yamauchi

Yasunori Kuratomi

Hideo Kurokawa

Takashi Aoki

Koji Kameyama

Yukio Tanaka

Hiroshi Tsutsui

Junko Asayama

Koji Aoto

Akihiro Matsuda

Tetsuya Shiratori

Kuniyasu Kawabe

Koji Nomura

Kanako Miyashita

Masahito Yamazaki

Koji Shimokusa

Akifumi Ogiwara

Michihiro Miyauchi

Toshifumi Nakatani

Masaki Nishimura

Mitsuhiro Sasaki

Takashi Yamaguchi

Keiji Horikawa

Yoshihiro Fukushima

Hiroyuki Kawaji

Toru Kawase

Michiaki Watanabe

Yutaka Kanamaru

Masanori Watanabe

Kazuhiro Nishiyama

Akira Shiokawa

Hidetaka Higashino

Yoshikazu Nakayama

Katsutoshi Aoki

Takao Kawamura

Tetsu Ogawa

Hiroshi Miyai

Eiichiro Tanaka

Shinichi Mizuguchi

Kazunori Komori

Koichi Kotera

Hiroshi Tsutsu

Tetsuya Asano

Hideo Suzuki

Shin-ichiro Yasuda

Hidenori Tachi

Masao Niki

Katsutoshi Shindo

Toshikatsu Kawakami

Ikuo Takahashi

Yasuaki Muto

Yasuyuki Tamane

Tetsuya Imai

Shigeru Ohki

Yoshio Yoshimura

Shuji Watanabe

Kyoko Onomichi

Chisato Sakahara

Disclosed here is a method of aging a plasma display panel. The aging method of the present invention contains a first aging period and a second aging period. In the first aging period, applying voltage Vdto at least any one of the scan electrodes, the sustain electrodes, and the address electrodes suppress self-erase discharge that occurs in the wake of aging voltage generated by application of voltage in which the scan electrodes take a voltage level higher than the sustain electrodes. In the second aging period, applying voltage Vdto at least any one of the scan electrodes, the sustain electrodes, and the address electrodes suppress self-erase discharge that occurs in the wake of aging voltage generated by application of voltage in which the sustain electrodes take a voltage level higher than the scan electrodes. The above aging method offers a power-efficient aging process with the aging time accelerated.

Plasma display panel aging method

In the aging process performed by applying a voltage having an alternating voltage component between a scan electrode and a sustain electrode, an erase discharge occurs in succession to an aging discharge. According to the aging method, an erase discharge-suppressing voltage is applied to at least any one of the scan electrode, the sustain electrode, and the data electrode. Although the erase discharge repeatedly occurs in the wake of the aging discharge, the erase discharge-suppressing voltage suppresses the ones that occur when the scan electrode has voltage level higher than the sustain electrode.

Aging method of plasma display panel

In an aging process in which a voltage having an alternate voltage component is applied to at least between a scan electrode and a sustain electrode so as to form a discharge dent (sputter dent) on a protecting layer, the aging discharge dent is formed so as to satisfy any one of the following. First, the discharge dent on the scan electrode-side has a width which is narrower than the discharge dent on the side of sustain electrode. Second, the discharge dent on the side of sustain electrode is formed so that the depth of the discharge dent in the area away from a scan electrode paired with a sustain electrode as a display electrode is shallower than the depth of the discharge dent in the area close to counterpart scan electrode.

Plasma display panel and method of aging the same

A plasma display panel is provided that includes scan electrodes, sustain electrodes, and address electrodes. A first pulse voltage for the address electrodes or a second pulse voltage for the address electrodes is applied to the address electrodes in an aging step in which aging discharge is performed by alternately applying pulse voltage for the scan electrodes and pulse voltage for the sustain electrodes at least across the scan electrodes and the sustain electrodes. The first pulse voltage has a rising edge timing synchronized with a rising edge timing of the pulse voltage for the scan electrodes and a pulse width smaller than that of the pulse voltage for the scan electrodes. The second pulse voltage has a rising edge timing synchronized with a rising edge timing of the pulse voltage for the sustain electrodes and a pulse width smaller than that of the pulse voltage for the sustain electrodes.

Method of manufacturing plasma display panel

Plasma display panel and its aging method

A gas discharge panel capable of high-speed driving at a low drive voltage, while suppressing the occurrence of write errors in a write period, and a manufacturing method for the same. To achieve this, in the gas discharge panel of the present invention, a secondary gas formed from at least one of carbon dioxide, water vapor, oxygen and nitrogen is induced into discharge spacesevacuated until the residual gas pressure is 0.02 mPa or less, and an He&#x2014;Xe or Ne&#x2014;Xe rare gas (discharge gas) is induced into discharge spaces. The amount of the secondary gas included within discharge spaceswhen, for example, carbon dioxide is included therein, is suitably set in terms of both a discharge starting voltage and an electron emission ability, so that the partial pressure of the carbon dioxide is in a range of 0.05 mPa to 0.5 mPa inclusive.

Gas discharge panel and manufacturing method for the same

In conventional methods of correction luminance in displays, it has been necessary to interrupt video display during use in order to carry out correction. This is a problem in that interruptions are not good for workability from the perspective of the user of the image display device. In consideration of this, the present invention realizes a display without non-uniformity in illumination with respect to both initial characteristics and change over time by measuring anode current of an FED and creating a luminance correction memory. In addition, by illuminating arbitrary pixels during video idle periods, capturing the luminance information from the pixels, and renewing a correction memory based on this luminance information, correction for change over time is possible without interrupting video display. Thus, a display device that can maintain high quality images is provided.

Method of driving display panel, luminance correction device for display panel, and driving device for display panel

When aging is performed by applying aging voltage to a data electrode, a scan electrode, and a sustain electrode via respective inductors () coupled to the electrodes, frequency of a ringing waveform included in an aging voltage waveform applied to the data electrode is set in a range of &#xbd; to 2 times frequency of a ringing waveform included in an aging voltage waveform applied to the scan electrode. With the method above, the time required for aging is significantly shortened, and the aging with high efficiency in electric power is realized. Instead of using inductors () including a coil, controlling the length of lead wires () can also obtain desired inductance.

Plasma display panel aging method and aging device

A plasma display panel capable of realizing improvement in the characteristics thereof, such as lower discharge voltage, more stable discharge, higher luminance, higher efficiency, and longer life. During a step of sealing the periphery of substrates or before this sealing step, impurity gas other then inert gas is adsorbed by phosphor layers. The impurity gas is released into discharge gas and the impurity is added to the discharge gas in a controlled manner while the panel is lit. This method can realize improvement in characteristics, such as lower discharge voltage, higher luminance, higher efficiency, and longer life.

Plasma display panel and its manufacturing method

A plasma display panel capable of realizing improvement in the characteristics thereof, such as lower discharge voltage, more stable discharge, higher luminance, higher efficiency, and longer life. Before a step of sealing the periphery of substrates, impurity gas containing CO, HO and CHis other then inert gas is adsorbed by phosphor layers. The impurity gas is released into discharge gas and while the panel is lit. This method can realize improvement in characteristics, such as lower discharge voltage, higher luminance, higher efficiency, and longer life.

Method of manufacturing a plasma display panel with adsorbing an impurity gas

A cathode ray tube includes an electron gun for emitting at least one electron beam; a mask frame include a mask having a plurality of holes or slits for allowing the electron beam to be transmitted therethrough and a frame to which the mask is attached; and a panel including a phosphor layer to be scanned by the at least one electron beam transmitted through the plurality of holes or slits of the mask. The panel includes a plurality of stud pins for supporting the frame. The frame includes a plurality of elastic supports engaged with the plurality of stud pins. At least one of the plurality of elastic supports includes an engagement portion having an engaging hole which is engaged with one of the plurality of the stud pins and an elastic portion in contact with the one stud pin. Mask frame vibration causes the elastic portion to rub against a respective stud pin so as to generate a frictional force for attenuating the vibration of the mask frame.

Cathode-ray tube and image display comprising the same

An object of the present invention is to provide electron emission devices having improved electron convergence. To this end, an electron emission device of the present invention is such that a cathode electrode, an insulating layer, and a gate electrode are layered on a substrate in an order; an electron emission layer is in a first hole on the substrate penetrating from the gate electrode through the cathode electrode; an upper surface of the electron emission layer is between an upper surface of the substrate and a boundary between the cathode electrode and the insulating layer; at least one of a side surface and a lower surface except for a central area of the electron emission layer contacts the cathode electrode. By such an electron emission device, electrons are emitted mainly from the peripheral area of the electron emission layer. Accordingly, the electron convergence is improved.

Electron emission device, method of manufacturing the same, and image display apparatus using the same

A toner comprising a resin binder, a colorant, and fine inorganic particles having a BET specific surface area of 30 m/g or less, wherein the fine inorganic particles are added as an external additive, wherein the toner has a storage modulus at 100&#xb0; C. using a 25 mm parallel plate of 7&#xd7;10Pa or less, a storage modulus at 60&#xb0; C. using a 7.9 mm parallel plate of from 3&#xd7;10to 1&#xd7;10Pa, and a storage modulus at 70&#xb0; C. using a 7.9 mm parallel plate of from 7&#xd7;10to 3&#xd7;10Pa; and a two-component developer comprising the toner. The toner can be used for the development of a latent image formed in electrophotography, electrostatic recording method, electrostatic printing method or the like.

Toner

Disclosed are an electron-emitting element having a large operating current at a low operating voltage and excellent operation stability, and an electron source, an image display device and the like utilizing such an electron-emitting element, and further a method of fabricating such an element with few process steps at low cost. A cold cathode member is configured utilizing hybrid particle of a first particle serving to emit electrons into the space and a second particle being in the vicinity of the first particle and serving to control the position of the first particle. In this configuration, it is preferable that the first particle have a higher electron emission efficiency than the second particle and that the second particle be conductive.

Electron-emitting element and electron source, field emission image display device, and fluorescent lamp utilizing the same and methods of fabricating the same

A toner comprising a resin binder, a colorant, and externally-added inorganic fine particles, comprising large-particle size inorganic particles comprising 50% by volume or more of particles having a particle size of from 100 to 583.9 nm, and having a BET specific surface area of 1 to 40 m/g. The toner can be used for the development of a latent image formed in electrophotography, electrostatic recording method, electrostatic printing method or the like.

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Neyagawa, Japan

Koji Akiyama