Matsushita Electric Industrial Co., Ltd.

Panasonic Corporation

Kouji Nakashima

Toyokazu Yoshino

Katsuya Okamoto

Keita Ihara

Shinji Morimoto

Takahiro Oomori

Hidetoshi Matsumoto

Shigeki Ogata

Provided is an FPC, which comprises an insulating layer, wiring layersandlaminated above and under the insulating layer, and a layer connection for connecting the wiring layersandelectrically. The layer connection is constituted to comprise: a conductor press-fit holeof a cone shape extending through the insulating layerand the upper and lower wiring layersandand expanded to the side of one wiring layer; and a conductorfilled and press-fitted without any clearance in the conductor press-fit hole such that it is jointed to the wiring upper layerdeformed into the cone shape of the conductor press-fit hole, and is protruded from the other wiring lower layerto have its surface partially coated and jointed. As a result, the contact area between the wiring layersandand the conductorfilled in the conductor press-fit holecan be enlarged to retain the contact strength between the wiring layersandand the conductorsufficiently thereby to provide a high connection reliability for the layer connection.

Manufacturing method of flexible printed wiring board

To provide an interlayer-connected, multi-layer flexible printed circuit board having high bonding reliability and most suitable for micropatterning the circuit layers in the device; and to provide a high-productivity method for fabricating the device. A multi-layer flexible printed circuit board, wherein a conductor is filled in the through-holes formed in the insulating layer in the direction of the thickness thereof so as to electrically interconnect the circuit layers formed on both faces of the insulating layer, and wherein the conductor contains inside it, a copper-core solder ball having a copper ball as a core thereof.

Multi-layer printed circuit board, and method for fabricating the same

A multi-layered flexible print circuit board comprising an insulating layer, a circuit layer formed on the front and back surfaces of the insulating layer and a hole connecting between the circuit layers via the insulating layer, wherein there is provided an electrically-conductive member having a metal layer formed thereon at least on the surface thereof which is press-fitted into the hole to electrically conduct the circuit layer.

Multi-layered flexible print circuit board and manufacturing method thereof

A method for manufacturing a fine pattern includes steps of forming a master substrate having an electrode layer patterned to a predetermined shape, forming peel layers made of a conductive water-repellent thin film on the master substrate, forming the fine pattern made of the electrodeposit resin on the peel layers, impregnating the electrodeposit resin with water, and stripping the fine pattern off the master substrate and transferring the fine pattern on a bonding layer of the media substrate. A color filter and a shading pattern filter are manufactured by the method for manufacturing the fine pattern. The color LCD element includes plastic film substrates, a transparent pixel electrode, a liquid crystal material, and color filters. The color filters are pasted on the plastic film with a bonding film laid therebetween. The color LCD element includes fine emittable filters two-dimensionally created as the color filter on a light-transmissive substrate so that the emittable filter is composed to seal at least one kind of the light-storage and the fluorescent coloring particles in the electrodeposit resin layer.

Method for manufacturing fine pattern, and color filter, shading pattern

A method for manufacturing a fine pattern is provided which method makes it possible to well reproducibly and completely strip and transfer the fine pattern, repetitively use a master substrate, and simply form a high-definition and high-density fine pattern with good massproductivity. Further, a color filter and a shading pattern filter are implemented by the fine pattern. A color LCD element with the color filter is provided which enables to output a well color-reproducibly high-quality image with no color or brightness evenness. Moreover, a color LCD element is provided which enables to continuously output a coloring function for a certain length of time after light from a light source or ambient light disappears and form a brighter and more vivid image. The method for manufacturing a fine pattern includes the steps of forming a master substrate having an electrode layer patterned to a predetermined shape, forming peel layers made of a conductive water-repellent thin film on the master substrate, forming the fine pattern made of the electrodeposit resin on the peel layers, impregnating the electrodeposit resin with water, and stripping the fine pattern off the master substrate and transferring the fine pattern on a bonding layer of the media substrate. The color filter and the shading pattern filter are manufactured by the method for manufacturing the fine pattern. The color LCD element includes plastic film substrates, a transparent pixel electrode, a liquid crystal material, and color filters. The color filters are pasted on the plastic film with a bonding film laid therebetween. The color LCD element includes fine emittable filters two-dimensionally created as the color filter on a light-transmissive substrate so that the emittable filter is composed to seal at least one kind of the light-storage and the fluorescent coloring particles is sealed in-the electrodeposit resin layer.

Growing community of inventors

Onga-gun, Japan

Kouji Nakashima