Electromagnetic screen mobile phone and soft magnetic material sheet for electromagnetic screen mobile phone

Abstract

The invention relates to an electromagnetic screen mobile phone and a soft magnetic material piece applied to the same. The soft magnetic material piece is made of Sendust magnetic powders. The Sendust magnetic powders comprise components of, by weight, 9.2%-9.8% of silicon, 5.3%-5.9% of aluminum, less than 0.02% of carbon, less than 0.8% of manganese, less than 0.006% of sulphur, less than 0.01% of phosphorus and less than 1.15% of oxygen, with the balance being iron. The thickness of the soft magnetic material piece is 0.9-1.5 mm. A user can apply the soft magnetic material piece to the electromagnetic screen mobile phone to solve the problem of soft magnetic compatibility in the prior art and to ensure that an electromagnetic screen causes no interference in neighboring magneto-sensitive elements such as an electronic compass, namely, a geomagnetic sensor, and meanwhile to guarantee that the radio frequency index of the electromagnetic screen cannot reduce. Besides, a GSM (Global System for Mobile Communications) interference problem can be solved, the electromagnetic screen is free from influences of GSM radiant power and movement track signals of an electromagnetic pen can be sensitively and accurately received.

Description

technical field [0001] The invention relates to the technical field of mobile terminals, in particular to an electromagnetic screen mobile phone and a soft magnetic material sheet used for the electromagnetic screen mobile phone. Background technique [0002] With the continuous development of mobile communication terminal technology, various smart phones have been developed in the industry to meet the needs of different applications or different consumer groups. [0003] For example, a kind of mobile phone with electromagnetic screen and original handwriting input has appeared at present. Different from the usual resistive and capacitive touch screens, using a mobile phone with an electromagnetic screen requires an electromagnetic pen to complete the input. The core circuit of the electromagnetic pen is a micropower transmitter with a transmission frequency around 400kHz. An LC oscillator constitutes an oscillating circuit. When writing, the physical displacement of the p...

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Problems solved by technology

[0015] The technical problem to be solved by the present invention is that, aiming at the problem that the soft magnetic material of the prior art cannot solve the problem of mutual compatibility between the electromagnetic screen and the electronic compass in the mobile phone and the problem of suppressing the interference of the GSM radio frequency radiation on the antenna of the electromagnetic screen, a kind of magnetic screen for electromagnetic screen is provided. Soft magnetic material sheet for screen mobile phone

[0016] The technical problem to be solved by the present invention is that, aiming at the problem that the soft magnetic material of the prior art cannot solve the problem of mutual compatibility between the electromagnetic screen and the electronic compass in the mobile phone and the problem of suppressing the interference of the GSM radio frequency radiation on the antenna of the electromagnetic screen, a kind of magnetic screen for electromagnetic screen is provided. screen phone

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