摘要:
An imaging method is disclosed. An imaging composition is coated on a work piece followed by applying a sufficient amount of energy from a 3-D imaging system to form an image on the coated work piece. The image may be a logo or marker for alignment of parts.
摘要:
Disclosed are methods for depositing a copper seed layer on a substrate having a conductive layer. Such methods are particularly suitable for depositing a copper seed layer on a substrate having small apertures, and preferably very small apertures.
摘要:
A method for manufacture of a multilayer board and the board formed by the novel method. The method comprises selective plating of metallic reinforcing members, solder mount pads, signal lines and interconnections sequentially. The resultant board is desirably free of glass fiber reinforcement.
摘要:
The invention provides multilayer circuit boards and methods for formation of a sequential build circuit board. Among other things, glass fiber reinforced copper clad epoxy substrates, required to provide strength or rigidity to prior boards, are not required for preferred circuit boards of the invention. Preferred methods of the invention include applying a dielectric coating onto a support; forming recesses in the dielectric coating that define openings including opening for at least one reinforcing member; depositing copper metal into the recesses to form a first layer; applying a second dielectric coating onto the first circuit layer; forming recesses in the second dielectric coating that define openings including openings for at least one reinforcing member in registration with the one or more reinforcing members in the first layer; depositing metal into the recesses in the dielectric coating to form the second layer; and repeating the process to form sequential build board having the desired number of layers.
摘要:
The invention relates to a conductive dispersions used for diverse purposes such a base for electroplating nonconductors. The dispersion are characterized by use of a stabilizing quantity of a stabilizer having repeating alylkene oxide groups and a hydrophilic--lipophilic balance in excess of 12. It has been found that the stabilizers utilized in the subject compositions does result in a significant loss of conductivity in coatings formed from the dispersion.
摘要:
Negative photoimageable compositions are disclosed which contain a radiation sensitive component for producing an acid when subjected to radiation at wavelengths of 320 to 420 nanometers, a resin binder and a reactive oligomer. The compositions are useful in constructing printed circuits and integrated circuit packages.
摘要:
An imaging method is disclosed. An imaging composition is coated on a work piece followed by applying a sufficient amount of energy from a 3-D imaging system to form an image on the coated work piece. The image may be a logo or marker for alignment of parts.
摘要:
Imaging compositions and methods of using the compositions are disclosed. The imaging compositions are sensitive to low levels of energy such that upon application of the low levels of energy the compositions change color or shade. The compositions may be used in methods of marking.
摘要:
A method for manufacture of a circuit board and the board formed by the novel method. The method comprises selective plating of metallic reinforcing members, solder mount pads, signal and interconnections sequentially. The resultant board is desirably free of glass fiber reinforcement.