摘要:
A manufacturing method of a circuit board includes the steps of: forming projecting electrodes on a substrate; forming a photosensitive resin film on the substrate so as to cover the projecting electrodes; exposing a substantially entire surface of the photosensitive film; and melting the surface of the photosensitive film so as to expose the projecting electrodes.
摘要:
A direct exposure system comprises: a data mask that is a data object including drawing data; and a control mask that is a data object including at least one logical layer in which information about exposure conditions applied according to regions on a substrate is specified, and performs a direct exposure process using integrated data generated by combining the data mask with the control mask.
摘要:
A method for forming insulating precursors to via holes formed through conductive and semiconductive substrates includes use of stereolithographic processes. An unconsolidated material is introduced into a precursor hole, then regions of the unconsolidated material that are located adjacent to the surface of each precursor hole are selectively consolidated to form an insulative coating thereon. This process may be conducted once to form a single-layered insulative coating or multiple times to form multilayered insulative coatings. Subsequently, unconsolidated material may be removed to expose a via hole that extends through the insulative coating. Structures that include via holes and conductive vias that have been insulated in this manner are also disclosed, as are systems for forming the insulative coatings.
摘要:
The invention provides a process for producing a wiring circuit board, which comprises the steps of: (A) forming a conductor layer of a predetermined pattern on an insulating layer; (B) forming a photosensitive solder resist layer on the insulating layer and the patterned conductor layer formed on the insulating layer; (C) disposing a transparent protective film on the photosensitive solder resist layer; and (D) exposing the photosensitive solder resist layer to a light through the transparent protective film.
摘要:
The present invention provides methods of making an electronic part in which a nanopaste composed of inorganic nanoparticles and a carrier is applied onto a surface of a substrate. The composition is then processed to form an electrically conductive pattern area that adheres to the surface of the substrate. Optionally, the conductivity of the pattern area may be improved by heating.
摘要:
An optical magnification adjustment system being capable of minutely correcting magnification. A first lens 1 of plano-convex is installed on the side of an object surface 5, and a second lens 2 of concave-plano is installed on the side of a formed image surface 7. By controlling the center space d between the first lens and the second lens, the image is enlarged or reduced. The radii of curvature R2 and R3 of the convex surface of the first lens and the concave surface of the second lens are respectively set according to the following equations. R2=(1−n1)/&phgr;2 R3=(n2−1)/&phgr;3 where, &phgr;2 and &phgr;3 represent optical power, and n1 and n2 represent refraction indexes, respectively.
摘要:
A holder for exposing both faces of a panel to light in order to make a double-sided printed circuit using first and second flexible artworks. The holder has a first frame with no transparent plane support member for receiving the first flexible artwork, and a second frame with no transparent plane support member for receiving the second flexible artwork. The holder includes a system for positioning and fixing the peripheries of the artworks to their respective frames. The holder further includes a mechanism for positioning and holding the panel between the frames. There is an approach mechanism for causing the frames to move towards the faces of the panel. There is also a system for establishing suction in the volume defined between the frames having the panel therebetween.
摘要:
It is an object to provide a method of efficiently manufacturing a double-sided circuit board having a metallic via hole which can suitably be used as a submount for mounting a semiconductor device, that is, a substrate in which the electrical contact of a metallic via hole and a circuit pattern is excellent and an element can easily be bonded and positioned. In a ceramic substrate having a via hole filled with a conductive material, a ceramic portion of at least one of faces of the ceramic substrate has a surface roughness of Ranull0.8 nullm, a substrate in which the conductive material filled in the via hole present on at least one of the faces is protruded from a surface of the face with a height of 0.3 to 5.0 nullm is used as a material substrate and a conductive layer is formed on the surface, and subsequently, the conductive layer is patterned and a solder film pattern for element mounting is formed based on a position of a convex portion of the conductive layer which results from the via hole present on an underlaid portion of the conductive layer.
摘要:
A process is described for the direct production of an imaged pattern of resist on a substrate surface (such as a pattern of etch-resistant organic resin material on the surface of a copper-clad dielectric in connection with a printed circuit board (PCB) fabrication process or in the process of producing printed plates), which process utilizes thermo-resists rather than photoresists, i.e., compositions which undergo thermally-induced, rather than photo-induced, chemical transformations. A film of thermo-resist composition applied to the substrate surface is scanned by a focused heat source (e.g., a thermal laser emitting in the IR region) in a predetermined pattern, without a phototool, to bring about localized thermally-induced chemical transformations of the composition which either directly produce the resist pattern or produce in the film a developable latent image of the pattern.
摘要:
Imageable precursors for masks and for electronic parts comprise a polymeric layer applied to a substrate. The layer comprises at least one polymer having infra-red absorbing groups carried as pendent groups on the polymer backbone. Certain infrared absorbing groups may also act to insolubilize the polymer in a developer, until it is imagewise exposed to infra-red radiation. Imagewise application of heat, resulting from imagewise exposure of the precursor to infra-red radiation, renders the polymer layer more soluble in the developer than prior to exposure to the infra-red radiation.