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US 9,072,173 B2Granted
Rigid-flex printed circuit board and method for making same
AssigneesFukui Precision Component (Shenzhen) Co., Ltd., Zhen Ding Technology Co., Ltd.
InventorNing Hou
Life of this patent
Estimating the term…
Abstract
An RFPCB includes a reinforcement layer and at least two FPCBs spliced together to match the reinforcement layer in shape and size. The FPCBs are adhered onto the reinforcement layer. The reinforcement layer includes circuits connected with the FPCB and has portions removed to obtain a desired flexibility.
Claims14
A rigid-flex printed circuit board (RFPCB), comprising:
- a reinforcement layer;
- and
- at least two FPCBs spliced together to match with the reinforcement layer in shape and size and pasted onto the reinforcement layer;
- wherein the reinforcement layer comprises circuits connecting with the FPCBs and comprises desired parts removed to obtain a desired flexibility.
1 more element
A method for making a rigid-flex printed circuit board (RFPCB), the method comprising:
- providing a first FPCB, the first FPCB defining a plurality of cutouts at one side thereof and comprising a first FPCB unit;
- providing a second FPCB, the second FPCB comprising a plurality of protrusions corresponding to the cutouts at one side thereof and comprising a second FPPCB unit;
- splicing the second FPCB with the first FPCB by engagement between the cutouts and the protrusions to obtain a third FPCB;
- providing a reinforcement layer, the reinforcement layer having a shape and size matching with the third FPCB, the reinforcement layer comprising a copper foil and an adhesive layer;
- thermally pressing the third FPCB onto the reinforcement layer, with the adhesive layer bonding the copper foil to the third FPCB to obtain a first semifinished board;
- forming a first circuit pattern corresponding to the first FPCB unit and a second circuit pattern corresponding to the second FPCB from the copper foil and connecting the first circuit pattern and the first FPCB unit, and connecting the second circuit pattern and the second FPCB unit in desired manner to obtain a second semifinished board, and;
- removing desired parts of the reinforcement layer to expose corresponding parts of the first FPCB unit and the second FPCB unit, thus to obtain the RFPCB.
4 more elements
Dependencies are inferred from the claim text.