Method for producing magnetic field shielding sheet, and magnetic field shielding sheet produced thereby
A manufacturing method and shielding sheet technology, applied in the fields of magnetic field/electric field shielding, circuit device, inductor/transformer/magnet manufacturing, etc., can solve the problems of increased production unit price, difficulty in fragment size, difficulty in various magnetic permeability, etc., and reduce production Effect of unit price and simplification of manufacturing process
Active Publication Date: 2020-03-24
AMOSENSE
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Problems solved by technology
[0011] However, in order to separate the magnetic field shielding sheet into a plurality of fragments, an additional fragmentation process as described above is added, so there is a problem that the production unit price increases due to the additional manufacturing process.
[0012] In addition, if the magnetic field shielding sheet is separated into a plurality of fragments by passing between the pair of rollers and pressurized according to the fragmentation process performed by a pair of rollers, it is difficult to adjust the size of the fragments separated from each other.
Therefore, it is difficult to produce magnetic field shielding sheets having various magnetic permeability by the conventional fragmentation process.
Method used
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Embodiment Construction
[0050]Embodiments of the present invention will be described in detail below with reference to the accompanying drawings, so that those skilled in the art of the present invention can easily implement them. The present invention can be embodied in various forms and is not limited to the embodiments described here. In order to clearly describe the present invention, parts irrelevant to the description are omitted from the drawings, and the same reference numerals are assigned to the same or similar components throughout the specification.
[0051] The manufacturing method of the magnetic field shielding sheet of the present invention is as follows figure 1 As shown, it includes: a step S1 of preparing a magnetic sheet A with a predetermined area; and a step S2 of stamping the shielding sheet 100 from the magnetic sheet A into a predetermined size.
[0052] The step of preparing the magnetic sheet A may be a step before the shielding sheet 100 is produced as a final product by...
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Provided is a method for producing a magnetic field shielding sheet. A method for producing a magnetic field shielding sheet according to an exemplary embodiment of the present invention is for producing a magnetic field shielding sheet separated into a plurality of pieces, and comprises the steps of: preparing a magnetic sheet made of a magnetic material and having a first area; and punch-blanking a shielding sheet, which has a second area relatively narrower than the first area, from the magnetic sheet by using a mold, so as to separate the shielding sheet from the magnetic sheet, wherein inthe step of punch-blanking the shielding sheet from the magnetic sheet, at least one linear slit is formed through the inner region of the second area by means of the mold, so that the shielding sheet, while being divided in the size of the second area from the magnetic sheet, can be separated into a plurality of pieces.
Description
technical field [0001] The present invention relates to a manufacturing method of a magnetic field shielding sheet, and in more detail, relates to a manufacturing method of a magnetic field shielding sheet capable of simplifying the process and thus saving manufacturing costs and a magnetic field shielding sheet manufactured therefrom, such as electronic devices such as mobile phones. Magnetic field shielding sheets for wireless charging of devices. [0002] Also, the present invention relates to a wireless power receiving device including the above-mentioned magnetic field shielding sheet. [0003] In addition, it should be pointed out that the utility model patent has been applied for the same invention on the same date. Background technique [0004] Portable terminal devices such as mobile phones and tablets include various functions such as near field communication (NFC) using a magnetic field and wireless charging. [0005] Near field communication (NFC) and wireless ...
Claims
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IPC IPC(8): H05K9/00
CPCH05K9/0007H01F41/02H01F1/14H01F27/36B32B7/12B32B2038/045B32B2307/748B32B2307/208H05K9/0075H02J50/70H01F2027/348
Inventor 张吉在李东勋
Owner AMOSENSE