Panasonic Intellectual Property Management Co., Ltd.

Shun Yamaguchi

Tatsuya Arisawa

Yoshio Ohtsuka

Yasuhiro Wada

Yuki Inoue

Mitsuyoshi Nishino

Yasunori Nakai

Jin Korekuni

Akira Irifune

Fuminori Satou

A metal-clad laminate includes an insulating layer that contains a cured product of a resin composition containing a polymer having a structural unit represented by Formula (1) in a molecule and a metal foil that is laminated on the insulating layer and is a metal foil in which a nickel element amount on a surface on a side in contact with the insulating layer and a nickel element amount on the surface when the surface is sputtered for 1 minute at 3 nm/min in terms of SiOare each 4.5 at % or less with respect to the total element amount on each surface. In Formula (1), Z represents an arylene group, R-Reach independently represent a hydrogen atom or an alkyl group, and R-Reach independently represent a hydrogen atom or an alkyl group having 1-6 carbon atoms.

Metal-clad laminate, wiring board, resin-including metal foil, and resin composition

A copper-clad laminate includes an insulating layer and a copper foil in contact with at least one surface of the insulating layer, in which the insulating layer contains a cured product of a resin composition containing a modified polyphenylene ether compound of which a terminal is modified with a substituent having a carbon-carbon unsaturated double bond, a chromium element amount on an exposed surface on which the insulating layer is exposed by an etching treatment of the copper-clad laminate with a copper chloride solution, measured by X-ray photoelectron spectroscopy is 7.5 at % or less with respect to a total element amount measured by X-ray photoelectron spectroscopy, and a surface roughness of the exposed surface is 2.0 μm or less in terms of ten-point average roughness.

Copper-clad laminate, wiring board, and copper foil provided with resin

A power source switching device includes a first switch circuit provided between a first power source and a load section, a second switch circuit provided between a second power source and the load section, a third switch circuit provided between the first power source and the load section in series with the first switch circuit, a fourth switch circuit provided between the second power source and the load section in series with the second switch circuit, a logic circuit that controls the third and the fourth switch circuits to prevent at least one of the third and fourth switch circuits from turning on while both of the first and second switch circuits are in an on state, and a control circuit that controls the first switch circuit, the second switch circuit, and the logic circuit.

Power source switching device and electronic appliance

There is provided an interchangeable lens mountable to a camera body. The interchangeable lens includes a zoom lens which can change a field angle of a subject image, a receiving unit for receiving sound pickup property information from the camera body, the sound pickup property information indicating sound pickup property of the camera body, and a lens controller for controlling drive of the zoom lens. The lens controller decides an available driving speed based on the sound collecting property information, the available driving speed being a driving speed settable to the zoom lens.

Growing community of inventors

Hyogo, Japan

Shun Yamaguchi