Abstract:
A method for manufacturing a ceramic device is provided. The ceramic device comprises a ceramic layer. A polyimide layer is on the ceramic layer. The polyimide layer has disposed therein a plurality of copper vias. Each copper via is in physical contact with the ceramic layer. A plurality of pads are formed on the polyimide layer. Each of the plurality of pads is in physical contact with a copper via of the plurality of copper vias. In this way, the pads are supported by a continuous copper arrangement, thereby providing greater support for the probe pads than if the probe pads were supported by the polyimide layer, as the mechanical strength of polyimide layer is lower than the mechanical strength of copper.
Abstract:
There is provided an electronic circuit unit capable of reliably mounting a semiconductor chip, and a method of fabricating the same. According to an electronic circuit unit of the present invention, electrodes (5) to which bumps (9) of a semiconductor chip (8) are adhered are arranged on an upper surface (1a) of a circuit board (1), and land units (7) to which chip parts (10) is soldered are arranged on a rear surface 1b of the circuit board (1), such that an insulating plate (3) which is on the rear surface (1b) of the circuit board (1) is supported by a supporting jig (11) during a mounting process of the semiconductor chip, and the circuit board (1) is not tilted. Therefore, an electronic circuit unit ensuring that the semiconductor chip is mounted with a reliable mounting capability can be obtained.
Abstract:
Disclosed herein are a sheet-like connector that electrode structures each having a front-surface electrode part small in diameter can be formed, a stable electrically connected state can be surely achieved even to a circuit device, on which electrodes have been formed at a small pitch, and the electrode structures are prevented from falling off from an insulating sheet to achieve high durability, and a production process and applications thereof. The sheet-like connector of the invention has an insulating sheet and a plurality of electrode structures arranged in the insulating sheet and extending through in a thickness-wise direction of the insulating sheet. Each of the electrode structures is composed of a front-surface electrode part exposed to a front surfaces of the insulating sheet and projected from the front surface of the insulating sheet, a back-surface electrode part exposed to a back surface of the insulating sheet, a short circuit part continuously extending from the base end of the front-surface electrode part through the insulating sheet in the thickness-wise direction thereof and linked to the back-surface electrode part, and a holding part continuously extending from a base end portion of the front-surface electrode part outward along the front surface of the insulating sheet.
Abstract:
A wiring board that allows the high-density connection with a plurality of circuit boards within a limited area, a manufacturing method for the same and electronic equipment using the same are provided. A wiring board 100 includes: a plurality of conductive layers 1A to 1G each including one or more wirings for transmitting signals; and a plurality of insulation layers 2 for insulating the respective conductive layers 1A to 1G. The conductive layers 1A to 1G and the insulation layers 2 are laminated alternately, and each of the plurality of conductive layers 1A to 1G is provided with a terminal 1AT to 1GT at at least one of both ends. The terminals 1AT to 1GT are formed stepwise and separated by the insulation layers 2 in a cross-sectional shape of a lamination structure of the conductive layers 1A to 1G and the insulation layers 2.
Abstract:
On a wiring substrate (1) one or more conductive linking portions (21) are applied and electrically connected to wiring layers (4) of the substrate. An insulating layer (3) covers the linking portions (21) and has openings (6) for exposing parts of the linking portions and carrier contact pads (2) connected to the linking portions (21) through holes (23a) in the insulating layer (3). Engineering changes in the electrical connection between the wiring layers (4) of the substrate (1) and outside elements (10) connected to the pads (2) can be made by selectively removing parts (21a) of the linking portions exposed in said holes (6), thereby to interrupt electrical connection, and/or by selectively contacting outward leads (7) to the pads (2).
Abstract:
An optical assembly is disclosed which may include a lens having first and second electrodes; and a flexible printed circuit (FPC) configured for placement in proximity to the lens, wherein the FPC may include a bottom insulating layer; a top insulating layer; and an FPC electrode configured to contact the second electrode of the lens, wherein the FPC electrode may include a center portion disposed between the bottom and top insulating layers of the FPC; a post connected to the center portion and extending through the top insulating layer of the FPC; and a contact layer connected to the post and configured to provide the contact with the second electrode of the lens.