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Piezoelectric speaker and electronic device

A piezoelectric speaker and piezoelectric sheet technology, applied in the electronic field, can solve problems such as poor sound quality, sound distortion, and missing audio frequency bands

Pending Publication Date: 2021-09-07
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, piezoelectric speakers also have the problem of uneven frequency response, missing audio frequency bands, distorted sound, and poor sound quality.

Method used

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  • Piezoelectric speaker and electronic device
  • Piezoelectric speaker and electronic device
  • Piezoelectric speaker and electronic device

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Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0026] The terms used in the embodiments of the present application are only used to explain specific embodiments of the present application, and are not intended to limit the present application.

[0027] At present, piezoelectric speakers are widely used in thin devices such as mobile phones, tablet computers, and wearable devices due to their small size and low power consumption. But this does not mean that piezoelectric speakers have no shortcomings. In fact, piezoelectric speakers also have defects such as uneven frequency response and poor sound quality, and these defects also restrict the development and application of piezoelectric speakers.

[0028] In order to help understand the inventive concept of the present application, the frequency response of the piezoelectric speaker is analyzed below with reference to the accompanying drawings.

[0029] example, figure 1 is a schematic diagram of a set of frequency response curves provided by the embodiment of the present ...

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Abstract

The embodiment of the invention provides a piezoelectric loudspeaker and electronic equipment. The piezoelectric loudspeaker comprises a main piezoelectric plate and a first auxiliary piezoelectric plate, wherein the surface of the main piezoelectric plate is provided with a first vibrating diaphragm, the surface of the first auxiliary piezoelectric plate is provided with a second vibrating diaphragm, the frequency of the second frequency response curve of the first auxiliary piezoelectric plate at the first wave crest position after the preset frequency is the same as the frequency of the first frequency response curve of the main piezoelectric plate at the first wave trough position after the preset frequency. According to the embodiment of the invention, the piezoelectric patch of which the first wave crest position after the preset frequency just corresponds to the first wave trough position after the preset frequency of the main piezoelectric patch is set as the first auxiliary piezoelectric patch, so that the frequency response of the main piezoelectric patch can be compensated, the frequency band loss of the piezoelectric loudspeaker is reduced, and the sound quality of the piezoelectric loudspeaker is improved.

Description

technical field [0001] The embodiments of the present application relate to the field of electronic technology, and in particular to a piezoelectric speaker and electronic equipment. Background technique [0002] As a sounding device, a piezoelectric speaker is mainly composed of a diaphragm and at least one piezoelectric sheet. The piezoelectric sheet acts as an exciter to drive the diaphragm to move, and the diaphragm moves the air to produce sound. At present, piezoelectric speakers are widely used in electronic devices such as mobile phones, tablet computers, and wearable devices due to their small thickness and low power consumption. However, piezoelectric speakers also have the problem of uneven frequency response, missing audio frequency bands, distorted sound, and poor sound quality. Contents of the invention [0003] Embodiments of the present application provide a piezoelectric speaker and an electronic device, which are used to improve the sound quality of the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04R7/02H04R17/00
CPCH04R7/02H04R17/00
Inventor 苏杰辜磊张贝
Owner HUAWEI TECH CO LTD