Abstract:
A circuit substrate (1) on which bubbles generated between a pad electrode (22) and a land (11A) can be eliminated is disclosed. Resists (13A,13B) are provided at any one of ends of a land (11A) on a circuit substrate. Solder paste (12A) is printed on the land (11A), and an electronic component (2) (MOSFET or the like) is placed and heated on the same. When the solder paste is melted, an electrode (22) of the electronic component comes into contact with the resists (13) on the circuit substrate. A gap is created by the resists between the land and the electrode of the electronic component. Since the melted solder paste does not wet the resists, bubbles generated in the solder escape to the end of the land through the gap.
Abstract:
Methods of applying adhesive to a surface of a substrate comprise: digitally applying a fixable fluid material to a portion of the substrate surface, fixing the first fluid material to form a fixed coating in contact with the substrate surface, wherein the fixed coating has at least one boundary that encloses a region of the substrate surface within the at least one boundary, and applying a second fluid material comprising at least one of an adhesive and an adhesive precursor to at least a portion of the enclosed region of the substrate surface. Various products, including laminated products, may be prepared according to such methods.
Abstract:
A microelectronic spring contact for making electrical contact between a device and a mating substrate and method of making the same are disclosed. The spring contact has a compliant pad adhered to a substrate of the device and spaced apart from a terminal of the device. The compliant pad has a base adhered to the substrate, and side surfaces extending away from the substrate and tapering to a smaller end area distal from the substrate. A trace extends from the terminal of the device over the compliant pad to its end area. At least a portion of the compliant pad end area is covered by the trace, and a portion of the trace that is over the compliant pad is supported by the compliant pad.
Abstract:
In order to provide an electronic circuit board capable of preventing the breakdown voltage of a capacitor element from dropping and excellent in high frequency performance, a positive type photoresist is spin-coated over the surface of an alumina substrate (1) and is exposed to light and developed to form an insulating layer (5), partially followed by formation of a capacitor element by successively stacking a lower electrode, a dielectric layer (3) and an upper electrode (4) over this insulating layer, further followed by formation of a resistance element (13), an inductor element (14) and a transmission line (15), each in a filmy state, over the surface of the alumina substrate.
Abstract:
The present invention relates to a module component for which degradation of electrical properties caused by absorption of moisture in the air can be prevented. An intermediate layer (70) comprises a first layer (20), a second layer (30) and a core layer (10). The core layer (10) comprises a material having a higher strength than the first layer (20) and the second layer (30), has a network structure that extends out in planar fashion, has an outer periphery (11) thereof positioned further to the inside than the outer peripheries of the first layer (20) and the second layer (30), and is sealed between the first layer (20) and the second layer (30). An upper layer (71) is laminated on the upper surface of the intermediate layer (70). A lower layer (72) is laminated on the lower surface of the intermediate layer (70). Mounted components (74) are mounted on any one of the upper layer (71) and the lower layer (72).
Abstract:
A surface electrode is provided on a surface of a piezoelectric element for changing the volume of each pressure chamber in an inkjet head. The surface electrode has a main electrode portion opposed to the pressure chamber and a connecting portion not opposed to the pressure chamber. A land is provided on one end of the connecting portion of the surface electrode. The land is electrically connected to the surface electrode. When the land is connected to a terminal of an FPC, a driving signal can be transmitted to the surface electrode. The land is therefore connected to the terminal using solder and a thermosetting resin covering the surface of the solder, or using only a thermosetting resin.
Abstract:
A fat conductor electrically interconnecting between a pair of substantially parallel plates (201, 202) wherein each of the plates (201, 202) has a prearranged pattern of conducting surface coating regions on the central interior face side thereof, and the fat conductor is specifically for use in sandwiched constructions of the plates (201, 202) having encapsulated dielectric film therebetween, the fat conductor including: two thin conductive surface coating pads (206, 207) of substantially complementary size and one of the two pads (206, 207) is located on each facing plate (201, 202) and the pads (206, 207) are situated to face each other when the plates (201, 202) are sandwiched together and each pad (206, 207) has an associated conductive surface coating path on its respective surface; a perimeter wall of adhesive (208) arranged around one of the pads (206, 207); and a conductive paste (209) situated within the perimeter wall (208) such that when the plates (201, 202) are sandwiched together there is formed an electrically conductive connection between the pads (206, 207) via the paste (209).
Abstract:
Provided is a hard disk drive. The provided hard disk drive includes a flexible printed circuit (FPC) in which a base layer and a cover layer are arranged with a circuit layer therebetween. In addition, a damping material is coupled at a predetermined portion of the signal patterns in the circuit layer so as to cross the signal patterns. The provided hard disk drive reduces vibration energy over an entire frequency band for minimizing the effect of vibration on servo control. As a result, the performance of the hard disk drive is improved.
Abstract:
The present invention relates to a module component for which degradation of electrical properties caused by absorption of moisture in the air can be prevented. An intermediate layer (70) comprises a first layer (20), a second layer (30) and a core layer (10). The core layer (10) comprises a material having a higher strength than the first layer (20) and the second layer (30), has a network structure that extends out in planar fashion, has an outer periphery (11) thereof positioned further to the inside than the outer peripheries of the first layer (20) and the second layer (30), and is sealed between the first layer (20) and the second layer (30). An upper layer (71) is laminated on the upper surface of the intermediate layer (70). A lower layer (72) is laminated on the lower surface of the intermediate layer (70). Mounted components (74) are mounted on any one of the upper layer (71) and the lower layer (72).