摘要:
Disclosed herein are a polyimide laminate and a method for fabricating the same. In the disclosed method, a polyimide film having a thermally-conductive filler distributed homogenously therein is prepared, the polyimide film is characterized in having a thermal conductivity greater than 0.3 W/m-° C. Then, at least one metal film is subsequently deposited on one or both sides of the polyimide film by electroplating, electroless plating, evaporation, sputtering or lamination and thereby forming the desired polyimide laminate.
摘要:
A method for manufacturing a metal clad laminate is provided. A poly(amic acid) solution is first formed. The poly(amic acid) solution includes a heat-conductive filler, a poly(amic acid) and a solvent. The thermal conductivity of the heat-conductive filler is higher than 10 W/m-° C. The content of the heat-conductive filler is about 10˜90 wt % of the solid content of the poly(amic acid) solution. Then, the poly(amic acid) solution is coated on a metal foil. Finally, the poly(amic acid) solution on the metal foil is heated to form a polyimide layer on the metal foil.
摘要:
A polyimide resin having good thermal stability and good adhesion to a metal foil is disclosed. The polyimide resin is prepared by dissolving at least one diamine in a polar aprotic solvent followed by the addition of an aromatic tetracarboxylic acid dianhydride to the solution of the aromatic diamines to prepare a polyamic acid solution, imidizing this solution to a polyimide resin by heating at a temperature above 250.degree. C., the polar aprotic solvent comprising at least 1 weight % of acetone. Polyimide laminates with a metal foil, such as a copper foil, are also described. The laminates may be used to form flexible printed circuit boards.
摘要:
Disclosed herein is a polyimide film having inorganic particles. The polyimide film is 12-250 μm in thickness. The polyimide film includes about 50-90 weight parts of polyimide and about 10-50 weight parts of the inorganic particles. The particle size of each of the inorganic particles is about 0.1 μm to about 5 μm. The polyimide film is characterized in that the thermal expansion coefficient is equal to or less than 30 ppm/° C. in any direction, the difference between two thermal expansion coefficients in two mutually perpendicular directions on the film surface is less than 10 ppm/° C., and the Young's modulus of the polyimide film is greater than 4 GPa in any direction. The dimensional stability of the polyimide film measured by the standard of IPC-TM-650 is less than 0.10% in any direction. A method for manufacturing the polyimide film is disclosed as well.
摘要:
A black matte polyimide film having inorganic particles and carbon particles is provided. The polyimide film has a thickness ranging from 12 μm to 250 μm. The polyimide film includes 1 wt % to 49 wt % of the carbon particles and 1 wt % to 49 wt % of the inorganic particles. Each of the carbon particles and the inorganic particles respectively has a particle size ranging from about 0.1 μm to about 10 μm. The polyimide film is characterized in that the 60° lustrousness is equal to or less than 60 Gloss Unit (GU). The thermal expansion coefficient (CTE) is equal to or less than 30 ppm/° C. The light transmittance is equal to or less than 10%. A method for manufacturing the polyimide film is disclosed as well.
摘要:
A substrate structure includes a substrate and a number of banks formed on the substrate. The banks and the substrate cooperatively define a number of accommodating rooms. The accommodating rooms are configured for accommodating ink. A spread-control layer is formed on the substrate beneath the accommodating rooms. The spread-control layer enables the ink applied on the spread-control layer to spread at a lower spreading rate than the rate on the substrate without the spread-control layer formed thereon.