Shinoda Plasma Corporation

Shinoda Plasma Co., Ltd.

Yosuke Yamazaki

Kenji Awamoto

Manabu Ishimoto

Hitoshi Hirakawa

Akira Tokai

Koji Shinohe

Hitoshi Yamada

Akira Nakazawa

Bingang Guo

A gas discharge tube includes: a elongated tube within which an electron-emissive film is formed, and which is filled with a discharge gas and sealed; a plurality of pairs of display electrodes disposed on a display side of the elongated tube; a signal electrode disposed on a rear side of the elongated tube; and an elongated support member inserted into the elongated tube and extending in the length direction of the elongated tube. The support member has a curved shape so that a curved inner surface thereof forms a discharge space, has longitudinally extending opposite edges, and has a phosphor layer formed on the inner surface of the support member. The support member further has an end wall at each of longitudinally opposite ends thereof. The end walls and the curved inner surface form an elongated depression in the support member.

Gas discharge tube, and display device having gas discharge tube arrays

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

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.

Plasma tube array and gas discharge tube

The present invention provides a plasma tube array including: plural light-emitting tubes; a front supporting member and a back supporting member which spread over the front and back of the light-emitting tubes; plural display electrode pairs provided on the surface of the front supporting member facing the light-emitting tubes; and plural signal electrodes provided on the surface of the back supporting member facing the light-emitting tubes. Each display electrode constituting the display electrode pair is a display electrode which is made of a metal thin wire, provided with plural openings formed in a distributed manner and includes a first metal thin wire facing a discharge slit and extending along the discharge slit, and the first metal thin wire is a metal thin wire thicker than a second metal thin wire which forms a region closer to a non-discharge slit side than the first metal thin wire.

Plasma tube array

A gas-discharge tube has a glass tube as its main body and a trench is provided in the axial direction of the glass tube on one surface (the surface opposed to the discharge surface) among the external surfaces of the glass tube. An address electrode is placed in the trench. The inner surface of the region of the glass tube where sustain electrodes are placed is formed to have a microscopic unevenness. A secondary electron emission film is formed on this inner surface where the unevenness is formed. In addition, a phosphor support member, whose cross section across the axis is in approximately a C-shape and where a phosphor layer has been formed in advance on the inner surface, is placed inside of the glass tube. Stable discharge characteristics is obtained by eliminating dispersion of the position of an electrode, relative to the gas-discharge tube.

Growing community of inventors

Kawasaki, Japan

Yosuke Yamazaki