Fujitsu Corporation

Hitachi, Ltd.

Shikoh Tech LLC

Shikoh Tech Co., Ltd.

Other

Fujitsu Limied

Hitachi Plasma Patent Licensing Co., Ltd.

Shinoda Plasma Corporation

Shinoda Plasma Co., Ltd.

Yumex Corporation

Tsutae Shinoda

Hitoshi Yamada

Manabu Ishimoto

Akira Tokai

Toshiyuki Nanto

Masayuki Wakitani

Noriyuki Awaji

Kenji Awamoto

Shinji Kanagu

Tatsutoshi Kanae

Mamaru Miyahara

Akira Nakazawa

Hitoshi Hirakawa

Shizuo Andoh

Takefumi Hidaka

Yoshinori Miyashita

Junichiro Takahashi

Kazuo Yoshikawa

Hiroyuki Nakahara

Yasuo Yanagibashi

Naohito Sakamoto

Takahiro Yamaguchi

Toshio Ueda

Tetsuya Makino

Shigeo Mikoshiba

Kyoji Kariya

Bingang Guo

Keiichiro Konno

Hisashi Yamaguchi

Toyoshi Kawada

Katsuhiro Ishida

Akira Otsuka

Koji Shinohe

Hideo Yamashita

Yoichi Ueda

Kenichi Oki

Kosaku Toda

Kenji Horio

Kohsaku Toda

Tsuyoshi Tanioka

Sei Sato

Shoshin Miura

Shizuko Miyahara, Legal Representative

Yoko Shinoda

Atuo Niinuma

Atsuo Niinuma

Hideo Sei

Yoshimi Sugimoto

Kurahashi Keizo

Yoshitaka Chigi

Tetsuro Nishimoto

Hiroyuki Tanaka

Mikihiro Kobayashi

Norivuki Awaji

Takeo Miyahara, Legal Representative

The present invention provides a deep ultraviolet radiation apparatus that is safe and has a high bacteria eliminating effect. The ultraviolet radiation apparatus comprises an optical filter that prevents the transmission of ultraviolet light of 240 nm or more emitted from a phosphor, wherein the optical filter is arranged facing light emitting surfaces of a gas-discharging tube array-type surface-emitting ultraviolet light source device comprising phosphor layer having a broad emission spectrum with a wavelength width of at least 210 nm to 250 nm with a peak wavelength of 228 nm. Light irradiated from the light source device is incident on a filter membrane with an incident angle thereof being altered by a transparent substrate of the optical filter. An ozone generation space may be formed between the surface-emitting ultraviolet light source device and the optical filter.

Ultraviolet radiation apparatus

A light-emitting tube array-type light source device includes: a plurality of light-emitting gas discharge tubes; and an electrode substratesupporting the light-emitting gas discharge tubes in parallel on an upper surface thereof, the electrode substrate having a plurality of slits partially exposes a bottom surface of each light-emitting tube, thereby the light-emitting gas discharge tubes can be cooled through the slits.

Light-emitting tube array-type light source device

During a normal operation, alternating drive voltage to be applied between a pair of electrodes provided to face an outer surface of a bottom part of a gas discharge light emitting tube is switched to a voltage value Vlower than a voltage value Vat the time of starting lighting. Further, the alternating drive voltage to be applied during the normal discharge operation is intermittently applied in a predetermined cycle and duty ratio to enable adjustment of light emission intensity.

Drive method and drive circuit for light-emitting device using gas discharge, and ultraviolet irradiation device

A gas discharge device includes a thin glass tube filled with a discharge gas; a pair of first and second long electrodes extending toward either side along a longitudinal direction with a discharge gap interposed therebetween are provided outside of a back side flat surface of a thin glass tube; and a ultraviolet phosphor layer formed on an inner surface at the back side flat surface, the thin glass tube filled with a discharge gas having a front side flat surface and the back side flat surface facing each other on a transverse section, wherein, starting with trigger discharge that is initially generated in the discharge gap as a result of a voltage increase when a voltage with a sine waveform or an inclined waveform is applied between both electrodes, the discharge gradually extends so as to move in the longitudinal direction of the electrodes. Ultraviolet light having high luminous efficiency and emission intensity is obtained from a front side surface of the thin glass tube by driving the device with a sine-wave AC voltage.

Gas discharge device and flat light source using the same, and driving method therefor

The present invention provides an ultraviolet light irradiation device having a planer UV light source in which the irradiation intensity of UV light can be adjusted finely in a wider range. The ultraviolet light irradiation device of the present invention comprises an UV light source and a housing that holds the planer UV light source. In the UV light source, a plurality of thin plasma tubes, each of which has an UV phosphor layer formed therein, are arranged in parallel with each other on an electrode support sheet, and drive circuits apply a pulse voltage to electrode pairs provided between the electrode support sheet and an array of the thin plasma tubes. A control circuit controls a factor of the pulse voltage to be applied to the electrode pairs so as to adjust the irradiation intensity of the UV light.

Ultraviolet light irradiation device

A full color three electrode surface discharge type plasma display device that has fine image elements and is large and has a bright display. The three primary color luminescent areas are arranged in the extending direction of the display electrode pairs in a successive manner and an image element is composed by the three unit luminescent areas defined by these three luminescent areas and address electrodes intersecting these three luminescent areas. Further, phosphors are coated not only on a substrate but also on the side walls of the barriers and on address electrodes. The manufacturing processes and operation methods of the above constructions are also disclosed.

Full color surface discharge type plasma display device

A photochromic includes a laminated film including a composite oxide film composed of at least two elements selected from the group consisting of Ti, Mn, Co, Ni, Zn, and Sn, and the group consisting of Mg, Al, and Si, respectively, and a transparent conductive film, wherein the light transmission property is changed by UV irradiation.

Photochromic material comprising composite oxides

According to the present invention, there is provided a method for forming a metal oxide film comprising, when a metal oxide film is formed by conducting a thermal treatment on a coating film containing an organic metal compound formed on an inner wall of a tube, performing an ultraviolet irradiation treatment or an ozone treatment on the coating film prior to or simultaneously with the thermal treatment.

Method for forming metal oxide film and method for forming secondary electron emission film in gas discharge tube

A method for forming a coating film on an internal surface of an elongated tube, includes longitudinally holding the elongated tube, applying a coating solution to the internal surface of the elongated tube; and drying the coating solution while carrying out a heat process for sequentially heating the elongated tube by using a heat source. The heat process includes adjusting the descending rate of the heat source so that a through-hole in the elongated tube is clogged with the coating solution whose viscosity is reduced by heating of the heat source, and sucking the through-hole in the elongated tube from the lower side thereof so that a portion of the through-hole that is clogged with the coating solution moves downwards along the elongated tube.

Method for forming coating film on internal surface of elongated tube and unit for forming the same

A gas discharge tube has a phosphor layer formed and a discharge gas enclosed within an elongated tube which is to serve as the gas discharge tube. The gas discharge tube includes a light-emitting section and a cleaning section for cleaning the discharge gas. The cleaning section is connected to the light-emitting section.

DISPLAY DEVICE EMPLOYING GAS DISCHARGE TUBES ARRANGED IN PARALLEL BETWEEN FRONT AND REAR SUBSTRATES TO COMPRISE A DISPLAY SCREEN, EACH TUBE HAVING A LIGHT EMITTING SECTION AS PART OF THE DISPLAY SCREEN AND A CLEANING SECTION CONNECTED TO THE LIGHT EMITTING SECTION BUT DISPLACED FROM THE DISPLAY SCREEN

A photochromic film includes a laminated film including a composite oxide film composed of at least two elements, one of the two elements selected from the group consisting of Ti, Mn, Co, Ni, Zn, and Sn, and the other of the two elements selected from the group consisting of Mg and Al, respectively, and a transparent conductive film, wherein the light transmission property is changed by UV irradiation.

Photochromic, photochromic material and method for manufacturing the same

A plasma display panel assembly includes electrodes and a dielectric layer covering the electrodes. The dielectric layer is formed of a low-melting-point glass, and the electrodes are formed of a metal containing a crystallized glass. The metal and the low-melting-point glass are simultaneously fired to complete the electrodes and the dielectric layer. Thus, in a manufacturing process of an AC plasma display panel, the number of firing steps can be reduced.

Method for manufacturing plasma display panel assembly

Growing community of inventors

Kawasaki, Japan

Tsutae Shinoda