摘要:
The present invention relates to a circuit board comprising: a circuit groove having at least one land region for surface mounting of electronic parts and at least one circuit wiring region formed integrally with the land region, and a partial reinforcing structure formed in the land region of the circuit groove, wherein the partial reinforcing structure is at least one structure selected from a group consisting of: an irregular shape having a ten-point average roughness (Rz) of 0.1 to 20 µm formed on the groove surface in the land region, a groove shape having the groove depth in the land region larger than that of the circuit wiring region to form a plated film having thickness in the land region thicker than that of the circuit wiring region, and a structure formed by forming at least one protrusion on the periphery of the groove in the land region.
摘要:
The invention provides a method for preparing a pattern for an electric circuit comprising the steps of: (a) providing a substrate; (b) providing a pattern of an inhibiting material for an electrical circuit onto said substrate by i) applying a layer of the inhibiting material onto said substrate and mechanically removing locally the layer of the inhibiting material to obtain said pattern; or ii) applying a layer of the inhibiting material onto said substrate, wherein said layer has pre-determined pattern which incompletely covers said substrate; (c) establishing a distribution of particles of a first metal or alloy thereof on the layer of the inhibiting material and the pattern as obtained in step. (b); and (d) depositing by means of an electroless process a layer of a second metal or alloy thereof on the distribution of the particles of the first metal or alloy thereof as obtained in step (c), whereby the inhibiting material that is still present on the substrate after step (b) locally inhibits the second metal or alloy thereof to be deposited on the first metal or alloy thereof, ensuring that the second metal or alloy thereof will selectively be deposited on the particles of the first metal or alloy thereof that are distributed on the pattern obtained in step (b).
摘要:
Disclosed is a method of forming a metal pattern, the method comprising depositing a dielectric substrate on a supporting substrate; forming a latent mask pattern of a metal pattern on the dielectric substrate; etching the dielectric substrate exposed by the latent mask pattern; forming a seed layer on the supporting substrate by activating the supporting substrate; removing the latent mask pattern and the portion of the seed layer disposed on the latent mask pattern through a lift-off process; and plating a metal layer on the patterned seed layer.
摘要:
A production process of a perforated porous resin base, comprising Step 1 of impregnating the porous structure of a porous resin base with a liquid or solution; Step 2 of forming a solid substance from the liquid or solution impregnated; Step 3 of forming a plurality of perforations extending through from the first surface of the porous resin base having the solid substance within the porous structure to the second surface in the porous resin base; and Step 4 of melting or dissolving the solid substance to remove it from the interior of the porous structure, and a production process of a porous resin base with the inner wall surfaces of the perforations made conductive, comprising the step of selectively applying a catalyst only to the inner wall surfaces of the perforations to apply a conductive metal to the inner wall surfaces.
摘要:
The present invention is a process for manufacturing resistors integral with the printed circuit board by plating the resistors onto the insulative substrate. The invention uses a mask during the activation step so as to selectively activate only selected portions of the surface thus enabling smaller areas to be plated on the printed circuit board because no plating mask is used. The process of the instant invention produced printed circuit boards having greater uniformity and reliability as compared to the prior art.
摘要:
A process for the metalization of substrates is disclosed. The metal either forms a coating over the entire substrate, or it is patternwise deposited on the substrate surface. Metal is patternwise formed on the substrate either by forming a pattern of resist material on the substrate and depositing the material in the interstices defined by the pattern or by forming a patterned resist layer over a metal layer and transferring the pattern into the substrate using conventional techniques. The patterned resist layer is formed on the substrate using conventional techniques. The substrate is treated with reagents that promote the electroless plating of metal on the substrate surface. If the resist material has been previously formed on the substrate surface, the substrate surface is then dried. The remaining resist is then removed from the substrate surface. The substrate surface is then exposed to an electroless plating bath to form nickel onto those portions of the substrate surface that were treated with the sensitizing and activating solutions. The substrate is then heated to at least 180°C. Additional layers of metal are formed on the substrate. After the additional layers are so formed, the substrate is again heated to a temperature of at least about 180°C after each layer is so formed.
摘要:
A circuit board H10 according to the present invention is a circuit board H10 in which an electric circuit H6 including a wiring section H6a and a pad section H6b is provided in the surface of an insulating base substrate H1. The electric circuit H6 is configured such that a conductor H5 is embedded in a circuit recess H3 formed in the surface of the insulating base substrate H1, and the surface roughness of the conductor H5 is different in the wiring section H6a and the pad section H6b of the electric circuit H6. In this case, it is preferable that the surface roughness of the conductor H5 in the pad section H6b is greater than the surface roughness of the conductor H5 in the wiring section H6a.
摘要:
The invention provides a method for preparing a pattern for an electric circuit comprising the steps of: (a) providing a substrate onto which a coating has been applied; (b) mechanically removing locally the coating to obtain a pattern for an electric circuit; (c) establishing a distribution of particles of a first metal or alloy thereof on the coating and the pattern as obtained in step (b); (d) removing the coating from the substrate; and (e) depositing by means of an electroless process a layer of a second metal or alloy thereof on the particles of the first metal or alloy thereof that are distributed on the pattern in step (c).
摘要:
A process for the metalization of substrates is disclosed. The metal either forms a coating over the entire substrate, or it is patternwise deposited on the substrate surface. Metal is patternwise formed on the substrate either by forming a pattern of resist material on the substrate and depositing the material in the interstices defined by the pattern or by forming a patterned resist layer over a metal layer and transferring the pattern into the substrate using conventional techniques. The patterned resist layer is formed on the substrate using conventional techniques. The substrate is treated with reagents that promote the electroless plating of metal on the substrate surface. If the resist material has been previously formed on the substrate surface, the substrate surface is then dried. The remaining resist is then removed from the substrate surface. The substrate surface is then exposed to an electroless plating bath to form nickel onto those portions of the substrate surface that were treated with the sensitizing and activating solutions. The substrate is then heated to at least 180°C. Additional layers of metal are formed on the substrate. After the additional layers are so formed, the substrate is again heated to a temperature of at least about 180°C after each layer is so formed.
摘要:
A process for producing circuit boards, which process comprises the steps of:
1. forming circuitry on the outer surfaces of a copper clad laminte; 2. applying a desense mask to the surfaces; 3. drilling holes in a desired array; 4. activating the holes to accept plating therein; thereafter 5. stripping the desense mask from the surfaces; 6. applying a plating mask to the surfaces; 7. optionally, cleaning the surfaces not covered by the plating mask; and 8. plating the hole surfaces and any other surfaces not covered by the plating mask with a metallic coating.