Panasonic Corporation

Panasonic Intellectual Property Management Co., Ltd.

Nobuhiko Nakamura

Kenji Ogawa

Keiji Akamatsu

Minoru Takeda

Hiroshi Ibaraki

A circuit board manufacturing method which includes inserting either a first claw or a second claw through a notch formed by notching an edge of a hole of a wiring board. The first claw and the second claw project outward from a wall portion of a cover member. The cover member is held on the wiring board, by sliding the cover member relative to the wiring board to position the edge of the hole between the first claw and the second claw provided on a surface of the wall portion identical to a surface on which the first claw is provided. The cover member is detached from the wiring board, by sliding the cover member relative to the wiring board to shift the first claw from the component mounting surface side to a soldering surface side with the first claw passing through the notch.

Method for manufacturing a circuit board

A plasma display panel; a scan electrode drive circuit for generating a gently decreasing downward inclined waveform voltage in an initializing period, a gently increasing first inclined waveform voltage, and a second inclined waveform voltage having a steeper gradient than the first inclined waveform voltage and decreasing immediately after the increasing waveform voltage reaches a predetermined potential in the last part of the sustain period. The lowest voltage in the downward inclined waveform voltage is switched at a first voltage, a second voltage higher than the first voltage and a third voltage higher than the second voltage to generate a downward inclined waveform voltage. The lowest voltage is switched according to the detected temperature to generate the downward inclined waveform voltage.

Plasma display device and method for controlling an amplitude of a waveform used for driving a plasma display panel based on temperature

In the method for driving a plasma display device, the plasma display panel are applied with voltage through the following process. In the first address period where an address discharge is generated on the scan electrodes that belong to the first scan electrode group, the third switching element is turned OFF so as to give a different value of reference voltage between the first and the second scan electrode driving sections. In the second address period where an address discharge is generated on the scan electrodes that belong to the second scan electrode group, the third switching element is turned ON so as to give a same value of reference voltage between the first and the second scan electrode driving sections. In the sustain period where sustain pulses are applied to a plurality of scan electrodes to generate a sustain discharge in the discharge cells, the third switching element is turned ON.

Growing community of inventors

Osaka, Japan

Nobuhiko Nakamura