Screen sounding structure, front cover plate, rear cover plate and electronic equipment

Abstract

The invention relates to the technical field of screen sound production, in particular to a screen sound production structure, a front cover plate, a rear cover plate and electronic equipment, and thescreen sound production structure comprises an internal driving circuit of a mobile terminal, and a front cover supporting structure, an ITO piezoelectric film and a rear cover supporting structure which are sequentially arranged in a stacked manner; conductive circuits are formed on the end surfaces of the two ends of the ITO piezoelectric film, and are electrically connected with the internal driving circuit; and the ITO piezoelectric film vibrates under the driving of the internal driving circuit and drives the front cover supporting structure or the rear cover supporting structure to resonate and produce sound. According to the invention, the problem that a cantilever piezoelectric ceramic scheme and a screen exciter scheme are adopted in the existing screen sounding technology, and avibration module must be arranged, so the thickness of the whole machine is increased is solved; and the problems of frequency response unevenness, Echo processing performance reduction, dual-MIC noise reduction performance reduction, poor audio-video playing effect and poor communication confidentiality due to the fact that an exciter is attached to a middle frame are solved.

Description

technical field [0001] The invention relates to the technical field of screen sound generation, in particular to a screen sound generation structure, a front cover, a rear cover and electronic equipment. Background technique [0002] The existing mobile phone screen is gradually moving towards borderless and visually limitless, so it is necessary to rearrange the front camera and the earpiece on the top of the mobile phone. Therefore, in order to avoid the design of the earpiece on the top of the mobile phone, the screen sound technology has evolved. [0003] The principle of screen sound technology applied to mobile phones is to use other components of the mobile phone instead of the speaker diaphragm to vibrate to produce sound. At present, the screen sound technology on the market mainly includes the cantilever piezoelectric ceramic scheme and the screen exciter scheme. Among them, the cantilever piezoelectric ceramic scheme uses a drive unit to convert electrical signa...

AI Technical Summary

Problems solved by technology

[0005] The content of the invention is to provide a screen sounding structure, front cover, rear cover and electronic equipment, which mainly solves the problem that the existing screen sounding technology adopts the cantilever piezoelectric ceramic scheme and the screen exciter scheme, and a vibration module must be provided. , resulting in the increase of the thickness of the whole machine; and the problems of uneven frequency response, decreased Echo processing performance, decreased noise reduction performance of dual MICs, poor audio and video playback effects, and poor confidentiality of the pass through when the exciter is attached to the middle frame.

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