Magnetic laminated structure, preparation method thereof and input device

Abstract

The invention discloses a magnetic laminated structure applied to an input device. The magnetic laminated structure comprises a low-permeability material layer and at least two high-permeability material layers, wherein the at least two high-permeability material layers are laminated on the low-permeability material layer. With implementation of the embodiment, the at least two high-permeability material layers can reflect magnetic fields produced by an inductance coil, the magnetic fields in other directions of the inductance coil can be focused above the inductance coil, so that the magnetic field above the inductance coil can be enlarged, the magnetic fields around the inductance coil are uniformized effectively, and a drawn oblique line can be further prevented from bending. Besides, the influence of external metal on the inductance coil can be shielded by the low-permeability material layer, so that the input device can be placed on a metal table board to be used and can be carried out by a user to be used in different environments. The invention further provides the input device provided with the magnetic laminated structure and a preparation method of the magnetic laminated structure.

Description

technical field [0001] The invention relates to the technical field of electromagnetic pens, in particular to a magnetic laminated structure, a preparation method of the magnetic laminated structure and an input device. Background technique [0002] At present, the electromagnetic pen input devices on the market, such as digital boards, point readers with electromagnetic pens or writing boards, etc., all have multiple sets of inductance coils wound on the PCB board or film, and the magnetic field generated by the inductance coils surrounds the circuit. Around, the closer the inductance coil is to the line, the greater the difference in the magnetic field it generates, which will have a corresponding impact on the signal processing part. For example, when the user draws a straight line, the value of the apparent diffusion coefficient (ADC) on this line varies, thereby affecting the linearity of the line. However, when the user draws a diagonal line, the linearity of the two ...

AI Technical Summary

Problems solved by technology

[0004] The embodiment of the present invention discloses a magnetic laminated structure, a method for preparing the magnetic laminated structure, and an input device, so as to solve the problems that the existing input device cannot meet the requirements of lightness and thinness and the bending phenomenon of drawn lines

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