Shinoda Plasma Co., Ltd.

Shinoda Plasma Corporation

Hitachi, Ltd.

Panasonic Corporation

Yumex Corporation

Advanced Pdp Development Center Corporation

Koji Shinohe

Kenji Awamoto

Hitoshi Hirakawa

Manabu Ishimoto

Akira Tokai

Yosuke Yamazaki

Hitoshi Yamada

Tetsuya Makino

Yoshio Shibukawa

Takamitsu Bunno

Hiroaki Tamura

Bingang Guo

Katsuhiko Itamasu

Koji Kishimoto

Yoko Shinoda

Tsutae Shinoda

Akira Nakazawa

Takashi Yamada

Toshiyuki Akiyama

Yasuyuki Noguchi

Yukiharu Miyamura

Yoshitaka Chigi

Naganori Tsutsui

Tetsuro Nishimoto

Hiroyuki Tanaka

Mikihiro Kobayashi

A large-scale display device having a plurality of display units which each include a plurality of elongated plasma tubes each filled with a discharge gas, and at least one pair of display electrodes disposed outside the plasma tubes, voltage applying means which applies a drive voltage to the display electrodes to cause electric discharge in the plasma tubes for display. Vertically adjoining ones of the display units respectively have adjoining portions which are offset thicknesswise from each other for prevention of contact between the plasma tubes of the vertically adjoining display units. The voltage applying means is disposed away from the adjoining portions of the vertically adjoining display units.

Large-scale display device

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

In a plasma tube array-type display device, a first surface of the intermediate member, which is a flexible and bumpy intermediate memberinterposed between a plasma tube array and a frame substrate, is attached with the rear surface of the plasma tube array at a top face of a plurality of convex portions provided on the first surface, and a second surface opposite to the first surface is attached with the frame substrate so as to define a screen shape, thereby the plasma tube array can be separated easily from the frame substrate.

Plasma tube array-type display device

This invention provides a plasma tube array-type display device and a luminance correcting method realizing reduced variations in luminance values of a plasma tube array. A gradient of the luminance value in the longitudinal direction of one plasma tube is calculated on the basis of the obtained luminance value at a plurality of positions in the longitudinal direction of at least one plasma tube. A difference of the luminance value of each plasma tube obtained at the same relative position. On the basis of the gradient of the luminance value and the difference of the luminance value of each plasma tube at the same relative position, a correction luminance value in each discharge cell in the longitudinal direction of each of the plurality of plasma tubes is calculated.

Plasma tube array-type display device and luminance correcting method

This invention provides a display device capable of maintaining a high image quality of a display image even when a plurality of plasma tube array-type display sub-modules is joined horizontally to one another. A display device comprises a plasma tube array-type display sub-module in which a plurality of plasma tubes, . . . , are arranged in parallel being held between an address electrode support sheet where address electrodes are formed and a display electrode support sheetwhere display electrodes are formed, wherein the plurality of plasma tube array-type display sub-modules, . . . , are joined horizontally to one another so that an interval between the adjacent plasma tube array-type display sub-modules, . . . , and a clearance between the adjacent plasma tubesare substantially equal.

Display device

This invention provides a plasma tube array-type display sub-module that realizes one seamless large screen of a display device and prevents degradation in quality of an image to be displayed on the large screen. The electromagnetic wave shield layer is formed so as to extend beyond an effective display region over, where the plurality of plasma tubes is arranged on one side of the front-side supporting sheet. Moreover, at least one further function layer is formed only over the effective display region. The front-side supporting sheet with display electrodes and the electromagnetic wave shield layer is bent toward the back direction along a side end of the effective display region in order to join plasma tube array-type display sub-modules.

Plasma tube array-type display sub-module and display device

This invention provides a plasma tube array-type display sub-module capable of reducing a possibility of occurrence of troubles on a plasma tube array during a manufacturing process even in a case where irregularities are formed on the back side of the plasma tube array, and a display device. The plasma tube array-type display sub-module comprises a plasma tube array including a plurality of plasma tubes arranged in parallel, the plasma tube array being held between an address electrode support sheet having address electrodes formed thereon and a display electrode support sheet having display electrodes formed thereon, wherein the plasma tube array is fixed to a sub-module frame through an intermediate layer that is made of a material more flexible than that of the plasma tube array and can deform along the irregularities on the address electrode support sheet of the plasma tube array.

A light emitting tube array is provided which includes:

Light emitting tube array, display device employing the light emitting tube array, and method of producing the light emitting tube array

A PDP is proposed which has high emission efficiency and which can decrease address discharge voltage. In a column direction of at least one of transparent electrodes, which perform sustain discharge via respective discharge gaps of a pair of row electrodes and constituting a row electrode pair, is set to 150 &#x3bc;m or less, and partial pressure of xenon in discharge gas sealed in a discharge space is set to 6.67 kPa or more. A width of a scan electrode, which is one row electrode of each of the row electrode pair facing the column electrode and to which scan pulse is applied, is wider than a width of the other row electrode of the pair to which discharge sustain voltage is applied.

Plasma display panel

A display device () includes a plurality of gas discharge tubes (R,G,B, . . . ) sandwiched between a front support plate () and a plurality of rear support plates (). The display device further includes: a plurality of display electrodes () formed on a surface of the front support plate facing the plurality of gas discharge tubes to extend across tube axes of the plurality of gas discharge tubes; a plurality of signal electrodes () formed on surfaces of the plurality of rear support plates facing the plurality of gas discharge tubes to extend along the longitudinal direction of the plurality of gas discharge tubes. Another rear support plate () for supporting the plurality of rear support plates is disposed on surfaces of the plurality of rear support plates opposite to the surfaces facing the plurality of gas discharge tubes.

Display device including gas discharge tubes sandwiched between a front support member and rear support members

A display device () has a display screen, the display screen comprising a plurality of gas discharge tubes (R,G,B, . . .R,G,B) disposed side by side. Each of the gas discharge tubes includes a phosphor layer () formed therein and also includes a discharge gas contained therein. Each gas discharge tube has a plurality of light-emitting points. Each of the plurality of gas discharge tubes (R,G,B, . . .R,G,B) is curved along the longitudinal direction thereof. The display screen is formed by combining the plurality of gas discharge tubes having different magnitudes of curvature.

Display device having plurality of curved gas discharge tubes

The present invention provides an array display apparatus in which multiple light-emitting tubes each having a fluorescent substance layer inside are aligned and a discharge is generated within these multiple light-emitting tubes, whereby the fluorescent substance layers within the light-emitting tubes are caused to emit light thereby to display an image. The array display apparatus displays an image of uniform luminance irrespective of the planar shape of a display surface when image data representing a uniform image is inputted.

Array display apparatus

A display device capable of realizing a desired color temperature is provided. Phosphor layersandwhich are excited by ultraviolet radiation produced by discharge and emit red, green and blue visible light, are formed inside a red, green and blue gas discharge tubeandrespectively. The height Yc of the phosphor layerwith respect to a rear support bodyis higher than the heights Ya and Yb of the phosphor layersandwith respect to the rear support memberand establishes the relationship Yc&#x3e;Ya=Yb. Therefore, the distance from the phosphor layerto the opposite discharge surface on a front support body is shorter than those from the phosphor layersandthe visible light emitted from the display deviceis shifted toward blue, that is, the color temperature increases.

Display device with varying phosphor structure

A plasma tube array according to the present invention includes plural light emitting tubes that have fluorescent material layers inside and are mutually lined up in parallel. The plasma tube array includes pairs of display electrodes that are formed along the respective fluorescent material layers. The fluorescent material layers are disposed in sequence in the longitudinal direction of the light emitting tubes.

Growing community of inventors

Kobe, Japan

Koji Shinohe