摘要:
A plating apparatus and method to perform plating in non-through-hole openings or through-hole openings of a printed wiring board having at least either non-through holes or through-holes to form via-hole conductors or through-hole conductors. The plating method contacts a printed wiring board having the non-through holes or through-holes with a plating solution including plating ingredients, and plates metal on a surface of the printed wiring board while making contact with at least a portion of a pliable contact body.
摘要:
A multilayer printed circuit board has an insulation layer, a first conductor layer provided over a first side of the insulation layer, a second conductor layer provided over a second side of the insulation layer opposite to the first side, and multiple filled vias electrically connecting the first conductor layer and the second conductor layer. The filled vias have upper surfaces, respectively, and each of the upper surfaces is made such that a difference between a lowest point and a highest point of each of the upper surfaces is less than or equal to about 7 μm.
摘要:
A double-sided circuit board including a substrate having a first surface and a second surface on an opposite side of the first surface and having a penetrating hole extending between the first surface and the second surface, a first conductive circuit formed on the first surface of the substrate, a second conductive circuit formed on the second surface of the substrate, and a through-hole conductor formed in the penetrating hole of the substrate and electrically connecting the first conductive circuit and the second conductive circuit. The penetrating hole comprises a first hole having a first opening with a diameter R1 on the first surface of the substrate, a second hole having a second opening with a diameter R2 on the second surface of the substrate, and a third hole connecting the first hole and the second hole and having a diameter smaller than at least one of R1 and R2.
摘要:
A method for manufacturing a double-sided circuit board includes preparing a substrate having the first and second surfaces, forming a first hole having a first opening with a diameter R1 on the first surface of the substrate, forming a second hole having a second opening with a diameter R2 on the second surface of the substrate, forming a third hole having a diameter smaller than R1 and/or R2 and connecting the first and second holes such that a penetrating hole formed of the first hole, the second hole and the third hole is formed in the substrate, forming a first conductive circuit on the first surface of the substrate, forming a second conductive circuit on the second surface of the substrate, and filling the penetrating hole with conductive material such that a through-hole conductor electrically connecting the first conductive circuit and the second conductive circuit is formed.
摘要:
A substrate material (10) for printed circuit, comprising a sheet-shaped composite material (11) composed of a plastic and a ceramic and conductive metal wires (12) fixed in the composite material (11) at given pitches, wherein the two surfaces of the substrate material (10) have electrical connection to each other via the metal wires (12). A process for producing a substrate material for printed circuit, which comprises stretching, in a mold, conductive metal wires at given pitches, then pouring, into the mold, a composite material composed of a plastic and a ceramic, curing the composite material, thereafter slicing the resulting material in a direction approximately perpendicular to the direction of the metal wires. Good electrical connection can be secured, and it is possible to prevent, during use, peeling between substrate material and conductive layers and between insulating material and metal wires. A printed circuit board of high density and excellent dimensional accuracy can be obtained.
摘要:
A thermal transfer printer containing a means for feeding a plurality of thermal transfer sheets and a plurality of image receiving sheets, a platen roller placed in the feeding path of the thermal transfer and image receiving sheets, and a recording section with a thermal head with a plurality of heating resistors for selective activation based upon image data to record the image on the image receiving sheets when they and the thermal transfer sheets are forced together by the platen roller so each image receiving sheet is pressed on the thermal head surface by the platen roller. The recording section also has a means to detect when at least one of the thermal transfer and image receiving sheets being recorded are out and a means automatically to exchange the thermal transfer or image receiving sheets with new sheets based upon the detected result.
摘要:
A wire conductor for a wiring harness includes a stranded wire obtained by twisting strands around a core wire. The core wire is composed of beryllium copper and the strands twisted around the core wire are composed of annealed copper. Preferably, the wire conductor includes a stranded wire obtained by twisting 6, 12 or 18 strands around the core wire. Half of the strands twisted around the core wire are composed of beryllium copper, the remaining strands and the core wire are composed of annealed copper, and the strands composed of beryllium copper and the strands composed of annealed copper are alternately arranged around the core wire. The wire conductor has sufficient conductivity and strength, causes no disconnection even when produced in a small diameter, and has appropriate flexibility.
摘要:
An image-receiving sheet for thermal transfer printing, comprises a substrate and a receptor layer provided on at least one surface of the substrate. The receptor layer is formed by applying a receptor layer forming composition comprising (a) at least one kind of thermoplastic resin and (b) at least one kind of release agent selected from silicone compounds expressed by the following formula (1):R.sub.1 --Si--(NCO).sub.4-1 (1)�in the formula (1), "1" indicates an integer of from 0 to 3, and "R" indicates an alkyl group, an aryl group or a vinyl group!,to the at least one surface of the substrate, and drying the thus applied composition by heat.
摘要:
A thin film transistor including a glass substrate and a gate electrode which is formed on the glass substrate. Source and drain electrodes are also provided. An insulating film covers at least the gate electrode and an amorphous semiconductor layer is formed on the insulating film. The semicondcutor layer includes a first portion having the source electrode formed thereon, a second portion having the drain electrode formed thereon, and a third portion formed between the first and second portions and located above the gate electrode, having a thin thickness which allows photolithographic light to permeate therethrough.
摘要:
A method for manufacturing a printed wiring board includes preparing a core substrate having first and second surfaces, forming a penetrating hole from the first surface toward the second surface of the substrate, forming first conductor on the first surface of the substrate, forming second conductor on the second surface of the substrate, and filling conductive material in the hole such that through-hole conductor connecting the first and second conductors is formed. The forming of the hole includes forming a first opening portion on the first-surface side of the substrate, a second opening portion from the bottom of the first portion toward the second surface, and a third opening portion from the bottom of the second portion toward the second surface, and the forming of the hole satisfies X2