Bi-crystal piezoelectric ceramic receiver used for mobile phone and tablet computer

Abstract

The invention discloses a bi-crystal piezoelectric ceramic receiver used for a mobile phone and a tablet computer. The receiver comprises a TP screen. A double-faced adhesive tape is adhered on the internal side surface of the TP screen. A multilayer bi-crystal piezoelectric ceramic sheet is adhered on the double-faced adhesive tape. The multilayer bi-crystal piezoelectric ceramic sheet is connected with a flexible circuit board used for transmitting electrical signals to the multilayer bi-crystal piezoelectric ceramic sheet. The aforementioned bi-crystal piezoelectric ceramic receiver is small in occupied cavity space so that precious installation space in the mobile phone or the tablet computer is greatly saved. Besides, sound-transmitting holes do not need to be arranged on the TP screen so that hole-punching cost of the TP screen is saved, production yield rate of the TP screen is enhanced and waterproof and dustproof performance of the mobile phone or the tablet computer is enhanced. Furthermore, conversation contents of an incoming call can be quite clearly heard only by attaching the TP screen to a jaw part or an ear part in a noisy environment.

Description

technical field [0001] The invention relates to a receiver, in particular to a receiver used on a mobile phone and a tablet computer. Background technique [0002] At present, the commonly used receivers for mobile phones and tablet computers are dynamic receivers. The dynamic receiver is located in the shell of the mobile phone or tablet. There is a sound hole on the TP screen of the mobile phone or tablet. The dynamic receiver The sound is transmitted through the sound hole. [0003] The disadvantages of the receiver with the above structure are: the dynamic receiver takes up a lot of cavity space in the mobile phone or tablet computer, and it is necessary to open a sound hole on the TP screen, and the cost of opening the sound hole is at least 2 to 3 yuan , the production cost is relatively high, and it is easy to damage the TP screen; moreover, the TP screen with sound-permeable holes has poor waterproof and dustproof effects. In addition, the dynamic receiver cannot cl...

AI Technical Summary

Problems solved by technology

[0003] The disadvantages of the receiver with the above structure are: the dynamic receiver takes up a lot of cavity space in the mobile phone or tablet computer, and it is necessary to open a sound hole on the TP screen, and the cost of opening the sound hole is at least 2 to 3 yuan , the production cost is relatively high, and it is easy to damage the TP screen; and the TP screen with the sound hole is set up with poor waterproof and dustproof effects. In addition, the dynamic receiver cannot hear the incoming call clearly in a noisy environment.

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