The comprehensive screen mobile phone that screen uses to phonate on market recently is increasing, for instance some earlier the millet MIX of moment, Vivo NEX and recent China for P30 Pro. Because,using screen happening is traditional receiver (mobile phone earphone) occupy in screen coping many. Want to reduce scope of screen coping frame, must want starting a hole of contractible screen coping.
The technology that screen phonates even if appears to solve screen coping starting a hole, although there was not little mobile phone to use screen on market,phonate technology, but summary comes down, nevertheless two kinds of screen phonate plan.
1, cantilever bridge type presses plan of electric pottery and porcelain (the casing in drive screen phonates)
2, screen activator plan (shake through drive screen phonate)
These two kinds of screen phonate plan has what distinction after all, the principle that we transmit from sound first is told case. The sound in physics produces by object vibration, the object that phonating calls sound the source, and mobile phone loudhailer used this kind of principle namely, shake through loudhailer can phonate.
Loudhailer phonates principle
But starting a hole of traditional loudhailer need lets sound wave come out, deny effect of sound of utter a word to be able to sell at a discount greatly. Screen of get through of need of starting a hole and in the space between casing, squashed the structure of screen, bring about screen to occupy than cannot reaching the limit.
So mobile phone manufacturer was thought up make a mobile phone other the component replaces loudhailer brace up film shakes the idea that phonate, cantilever bridge type presses plan of electric pottery and porcelain and screen activator plan is to use a mobile phone other component phonates, the principle is big nevertheless identical.
Cantilever bridge type presses plan of electric pottery and porcelain
Above all the cantilever bridge type that we say to appear on millet MIX in the past presses plan of electric pottery and porcelain. This plan is used above all on mobile phone of Xia Pu AQUOS Crystal.
Ceramics of contented of much lamination report adheres to in lame, call oscillatory film. Increase the tension of alternant change to oscillatory film, can ceaseless as the change of voltage fluctuation curves vibration of drive load structure to phonate.
This structure shakes unit through drive of constant change voltage
Millet presses tremendous cantilever bridge type electric pottery and porcelain to secure at that time was in in metallic mobile phone on casing, pass the mobile phone when picking up the telephone and human body contact to deliver sound wave to shake.
The cantilever bridge type of millet MIX presses module of electric pottery and porcelain
Of course, this plan has certain drawback, for instance module is driven whole in casing shakes, delivered sound directivity is ambiguous, also bring about millet MIX user calls at that time, everybody can hear audio awkwardness all round. To communicating the protection of illicit close sex is very adverse.
Screen activator plan
To this, we need a program that can produce clearer sound directivity, screen activator plan can satisfy this requirement, what is screen activator plan? Very simple, shake motive instrument can transmit screen directly, let screen replace traditional loudhailer brace up film can.
Activator
We can see, frequency activator by closely fixed was in on screen, the electric magnetic induction that frequency activator passes magnet and coil mechanical energy of translate into of principle general electric energy, drive screen to shake (principle and tradition use the loudspeaker that encircle type similar, shook unit to change screen nevertheless) .
China the screen that is P30 Pro phonates used this principle (the picture comes from IFixit)
We can see clearly China the shakes unit to go up coil that is P30 Pro, this and the drive principle that use the loudspeaker that encircle type are same. When shaking to travel to the outside by screen, sound had certain directivity, the effect of although illicit close sex is very inaccessible still traditional loudhailer, but before be being compared, the casing in whole mobile phone is in phonate or had not little promotion.
Finally, we return the problem of caption: Does screen phonate can you affect me to call?
The answer is won't, it is already opposite and mature that at present screen phonates, no matter be the acoustic quality that phonate, volume, the illicit close sex that still is audio transmission had good experience, overall had been close to traditional loudhailer quite. Since its effect is not poor, return frame of top of can contractible screen, reduce screen starting a hole (raise mobile phone sealing) , what reason do we still have need not?
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