Futaba Corporation

Futaba Denshi Kogyo Kabushiki Kaisha

Futuba Corporation

Toshinori Suzuki

Junichiro Kogure

Kuniaki Kawatsu

Tadashi Mizohata

Masahiro Kato

Yuji Nomura

Yoshinari Okamoto

Hiroyuki Wada

Yusuke Yasuoka

Mitsuyoshi Nihei

Kazuhiko Itakura

Akio Namiki

Chiyuki Hayakawa

A fluorescent display device having a pseudo half mirror formed on a rear surface a face plate thereof and exhibiting a function like a neutral density filter. The face plate is formed on a whole rear surface thereof with an aluminum film including opening portions, non-opening portions and a solid portion. The opening and non-opening portions cooperate with each other to constitute a pseudo half mirror. The pseudo half mirror has light transmittance determined depending on a ratio in area between the opening portions and the non-opening portions. Thus, the light transmittance may be set as desired by varying the area ratio.

Fluorescent display device

A phosphor capable of preventing a deterioration in luminous characteristics thereof, particularly, high-temperature operation characteristics thereof due to a SiO -containing pigment added thereto. The phosphor has a pigment contained therein, wherein the pigment has SiO added thereto and is melted, to thereby be coated with sodium glass. This permits gas generated during operation of the phosphor to be adsorbed on the phosphor as compared with a conventional phosphor to which the pigment subjected to the above-described treatment is not added, resulting in luminance retention of the phosphor after operation thereof being increased. In particular, it permits characteristics of the non-driven phosphor after the high-temperature operation test to be enhanced.

Phosphor and fluorescent display device

A fluorescent display device cable of being significantly increased in emission. A grid electrode is formed of a nonleaded conductive paste constituted by Al containing at least one of organic metal and phosphate glass frit by screen printing. This positively prevents precipitation of Pb on the grid electrode due to reduction of PbO by oxidation of Al during calcination of the conductive paste as encountered with the prior art.

Fluorescent display device with conductive layer comprising aluminum paste

A conductive paste capable of effectively preventing current interruption in through-holes of a fluorescent display device. An anode substrate having Al film wirings formed thereon is laminatedly provided thereon with an insulating layer, which is then formed thereon with an anode conductor and phosphor layers in turn, leading to an anode. The insulating layer is formed with through-holes, in which the conductive paste is filled to make electrical connection between the wirings and the anode conductors. The conductive paste is formed of a mixture of Ag, glass and a vehicle, and Zn and/or Sb added to the mixture, wherein Zn and/or Sb are added to the mixture in an amount of 1 to 40 wt. % based on Ag. Zn and/or Sb serve as a catalyst for promoting alloying between Ag contained therein and Al, resulting in providing electrical connection therebetween with highly increased stability.

Fluorescent display device with conductive paste having Ag, Sb, and Zn

Growing community of inventors

Mobara, Japan

Toshinori Suzuki