Panasonic Corporation

Panasonic Intellectual Property Management Co., Ltd.

Masayuki Nakamura

Takayuki Yamada

Satoshi Ishikura

Kengo Miyamoto

Tomohiro Miyake

Kiyoshi Goto

A control unit controls a bidirectional switch so as to turn the switch from ON to OFF when an amount of time, varying according to a lighting level, passes since a starting point of a half cycle of an AC voltage. When a voltage between both terminals of a capacitive element, connected to a control terminal of the bidirectional switch, becomes equal to or greater than a threshold voltage, the bidirectional switch turns from OFF to ON A first charging/discharging regulator circuit and a second charging/discharging regulator circuit each make a rate of fall of the voltage between both of the terminals of the capacitive element when the bidirectional switch turns from ON to OFF lower than a rate of rise of the voltage between both of the terminals of the capacitive element when the bidirectional switch turns from OFF to ON.

Protection circuit for dimmer, and dimmer

An isolation insulating film is formed so that an active region of a first access transistor and a substrate contact region can be integrated with each other in a plan view. A dummy gate electrode is formed on the semiconductor substrate between the active region of the first access transistor and the substrate contact region. The dummy gate electrode is electrically connected to a P-type impurity region of the substrate contact region.

Semiconductor device having a SRAM with a substrate contact and method for fabricating the same

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Mie, Japan

Masayuki Nakamura