Pioneer Electronic Corporation

Pioneer Video Corporation

Pioneer Corporation

Takashi Nishio

Chiharu Koshio

Tomoyoshi Ikeya

Tetsuya Matsumoto

Kunimoto Tsuchiya

Taiji Tsunoda

Eiki Tanikawa

An AC-driven surface discharge plasma display panel (AC-PDP) includes a pair of substrates that face each other and define a discharge space therebetween, a pair of electrodes for each display line formed on an inner surface of one of the two substrates such that the electrodes face each other and define a discharge gap therebetween, each of the electrodes having minute openings, and a dielectric layer covering the electrodes. The panel has enhanced emission efficiency properties that do not suffer from deterioration.

AC-driven surface discharge plasma display panel having transparent electrodes with minute openings

A plurality of select electrodes and a plurality of address electrodes are provided in matrix. A pixel is provided at each intersection of the select electrode and the address electrode. A mechanical electrostatic switch is provided for connecting the pixel with the select electrode and the address electrode. The electrostatic switch is provided to be operated by electrostatic charge stored between a part of the select electrode and a part of the address electrode.

Display

A light beam spot size measuring device comprises an optical magnifying system. The magnifying system receives an image of the recording light beam spot formed within an optical recording apparatus, and magnifies it. Then the converter receives the magnified image of the beam spot formed on the pickup surface thereof so as to produce an output signal representing the size of the beam spot. An attenuator device attenuates the intensity of the image of the laser beam spot during magnification. The image of the beam spot therefore can be currently measured on the basis of the output signal even with the high intensity of the recording light beam.

Device for measuring size of light spot

A surface acoustic wave (SAW) device is mounteed in such a manner that its functional surface faces a base plate and a space is formed therebetween to avoid inferiority in device characteristics. Electrodes of the SAW device and bumps formed on electrodes at predetermined positions of the base plate are connected to each other by applying pressure and heat to secure electrical continuity. A peripheral surface of the SAW device is bonded to the base plate by an adhesive to seal the functional surface of the SAW device.

Mounting device for an electronic component

A device for monitoring the amount of deviation of a light beam in an optical system with which the freedom of design of the system is significantly improved. For each position at which the amount of deviation is to be measured, a beam splitter is provided to divide the light beam at that point into a main beam and a sub-beam. The sub-beam is applied to an optical position detector which detects the amount of deviation of the sub-beam from a predetermined position on the detector, that deviation being related to the amount of deviation of the main beam from its designated optical path. The output of the position detector is used to correct the position of the main beam.

Optical axis monitoring system

An optical information recording disc having pits in a first film formed on one of major surfaces of the disc is uniformly covered with a suitable second film, whereby the size of each pits is corrected. When the disc is to be used as a mother disc for production of replicas, at least the wall of each pit is covered by a third layer having continuously increased thickness towards the bottom of the pit so that a peeling off of an intermediate transfer disc from the mother disc is facilitated.

Growing community of inventors

Koufu, Japan

Takashi Nishio