Method for manufacturing stepped circuit board
A manufacturing method and circuit board technology, which is applied in the fields of printed circuit manufacturing, printed circuit, electrical components, etc., can solve the problems of high cost, complex manufacturing process, and difficulty in resisting dry film, and achieve low production cost, simple process, and guaranteed quality effect
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Embodiment 1
[0037] A step circuit production technology without grinding process, taking the production of ordinary double-sided board as an example, in the specific implementation process, the circuit board will reveal the area that needs to thicken the copper through the first pattern transfer, and the electroplating thickens to meet the copper thickness of the line Requirements; liquid photosensitive ink is used as the resist in the second graphic transfer, and the lines in different copper thickness areas are accurately compensated, so that under acidic etching conditions, the line width and line spacing of different copper thickness areas are all 3 / 3mil requirement.
[0038] Production Method:
[0039] (1) Cutting: Cutting the H / Hoz substrate, the cutting size is 468*412mm.
[0040] (2) Drilling: Use mechanical drilling to drill holes in the circuit board.
[0041] (3) The first pattern transfer: use a dry film with a model number of DG38 and a thickness of 38 μm. The lamination tem...
Embodiment 2
[0049] A step circuit production technology without grinding process, taking the production of ordinary double-sided board as an example, in the specific implementation process, the circuit board will reveal the area that needs to thicken the copper through the first pattern transfer, and the electroplating thickens to meet the copper thickness of the line Requirements; liquid photosensitive ink is used as the resist in the second graphic transfer, and the lines in different copper thickness areas are accurately compensated, so that under acidic etching conditions, the line width and line spacing of different copper thickness areas are all 3 / 3mil requirement.
[0050] Production Method:
[0051] (1) Cutting: cut the Taiguang EM825 substrate, and the cutting size is 468*412mm.
[0052] (2) Drilling: Use mechanical drilling to drill holes in the circuit board.
[0053] (3) The first graphics transfer: use a dry film with a model number of DG38 and a thickness of 38 μm. The la...
Embodiment 3
[0061] A step circuit production technology without grinding process, taking the production of ordinary double-sided board as an example, in the specific implementation process, the circuit board will reveal the area that needs to thicken the copper through the first pattern transfer, and the electroplating thickens to meet the copper thickness of the line Requirements; liquid photosensitive ink is used as the resist in the second graphic transfer, and the lines in different copper thickness areas are accurately compensated, so that under acidic etching conditions, the line width and line spacing of different copper thickness areas are all 3 / 3mil requirement.
[0062] Production Method:
[0063] (1) Cutting: cut the Taiguang EM825 substrate, and the cutting size is 468*412mm.
[0064] (2) Drilling: Use mechanical drilling to drill holes in the circuit board.
[0065] (3) The first pattern transfer: use a dry film with a model number of DG38 and a thickness of 38 μm, with a ...
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