Nec Corporation

Hidekazu Takada

Mitsuo Ueoka

Eiji Takahashi

Osamu Yamashita

Takeshi Nishizawa

Tetsuo Shirasu

A plasma display device is provided with a plasma display panel and a luminance controller. The luminance controller lowers a luminance on the plasma display panel when there is no change in an input signal for a predetermined position in the plasma display panel within a predetermined time than a luminance when there is a change in the input signal within the predetermined time.

Plasma display device

A plasma display panel has a pair of insulating substrates (a front substrate and a rear substrate) which face each other. A plurality of surface discharge electrodes, each including a transparent scanning electrode and a transparent maintaining electrode arranged with a surface discharge gap in between, are formed in a matrix form on the front substrate. A plurality of scanning trace electrodes, which are made of metal material, are formed extending horizontally on the scanning electrodes. A plurality of first partition walls are formed vertically extending in stripes between the surface discharge electrodes. A plurality of maintaining trace electrodes, connected to the maintaining electrodes, are formed vertically extending on the first partition walls. The front substrate having the electrodes thus formed thereon is covered with a transparent dielectric layer and a magnesia oxide layer in sequence. Meanwhile, a white dielectric layer, which reflects visible light with high efficiency, is formed on the rear substrate. A plurality of second partition walls are formed vertically extending in stripes on the white dielectric layer. A plurality of phosphor layers are formed between the second partition walls by forming separate stripe coatings of phosphor materials for red, green and blue.

Plasma display

A hermetically sealed electrostrictive actuator comprises a metal case and a metal cap for housing an electrostrictive element therein. The metal cap is provided with a pair of glass sealing terminals to be connected to a pair of lead wires of the electrostrictive element. The metal case is provided a flexible region so as to follow the expansion and constraction of the electrostrictive element without breaking the hermetic envelope of the metal case and the metal cap.

Growing community of inventors

Tokyo, Japan

Hidekazu Takada