Panel type loudspeaker used for mobile phone or tablet computer

A tablet computer and speaker technology, applied in the field of speakers, can solve the problems of poor waterproof and dustproof effects, hard to hear the sound of moving coil speakers, large installation space, etc., and achieve good dustproof effect

Inactive Publication Date: 2014-03-26
ZHANGJIAGANG YUTONG ELECTRONICS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] At present, the speakers commonly used in mobile phones or tablet computers are dynamic speakers. The disadvantages of the existing dynamic speakers are: the installation space occupied is relatively large, and a sound

Method used

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  • Panel type loudspeaker used for mobile phone or tablet computer

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Example Embodiment

[0010] The panel speaker for mobile phone or tablet computer according to the present invention will be further described below with reference to the accompanying drawings and preferred embodiments.

[0011] See figure 1 As shown, the panel speaker for a mobile phone or tablet computer according to the present invention is provided with a cavity 11 on the back cover 1 of the mobile phone or tablet computer-the depth of the cavity 11 in this embodiment is 0.3 ~ 0.4 mm In the cavity 11, a thin film coupling sheet 2 of soft material and a multilayer piezoelectric ceramic sheet 3 are sequentially pasted from the inside to the outside. The thin film coupling sheet 2 is made of resin or polymer material and is a multilayer piezoelectric ceramic sheet 3. One side of the flexible circuit board 4 that receives electrical signals is pressed against the multilayer piezoelectric ceramic sheet 3, and the other side of the flexible circuit board 4 is pressed against the back cover 1. In this ...

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Abstract

The invention discloses a panel type loudspeaker used for a mobile phone or a tablet computer. A rear cover of the mobile phone or the tablet computer is provided with a recessed cavity. A thin-film coupling sheet made of soft material and a multilayer piezoelectric ceramic sheet are adhered in the recessed cavity from inside to outside in turn. One side, which is used for accessing electrical signals for the multilayer piezoelectric ceramic sheet, of a flexible circuit board is pressed on the multilayer piezoelectric ceramic sheet, and the other side of the flexible circuit board is pressed on the rear cover. According to the panel type loudspeaker, precious installation space in the mobile phone or the tablet computer is almost not occupied and sound-producing holes do not need to be arranged. Besides, the mobile phone or the tablet computer is great in waterproof and dustproof effect, and sound can be clearly heard in a noisy environment.

Description

technical field [0001] The invention relates to the field of loudspeakers used in mobile phones or tablet computers. Background technique [0002] At present, the speakers commonly used in mobile phones or tablet computers are dynamic speakers. The disadvantages of the existing dynamic speakers are: the installation space occupied is relatively large, and a sound hole needs to be opened on the shell, and the sound hole is opened. The waterproof and dustproof effects of mobile phones or tablets are poor. In addition, it is difficult to hear the sound clearly in noisy environments with dynamic speakers. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a panel-type speaker for mobile phones or tablet computers that takes up little space, does not need sound holes, has good waterproof and dustproof effects, and can hear sounds clearly in noisy environments. [0004] In order to solve the above technical problems, the...

Claims

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Application Information

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IPC IPC(8): H04R17/00
Inventor 贾开成贾军壮
Owner ZHANGJIAGANG YUTONG ELECTRONICS TECH
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