Dustproof sound-transmitting film composite part and preparation method thereof

Abstract

The invention provides a dustproof sound-transmitting film composite part and a preparation method thereof, wherein the composite part comprises a dustproof sound-transmitting film assembly, a first release film and a second release film, and only one side of the dustproof sound-transmitting film assembly is sticky; the sticky side of the dustproof sound transmission film is bonded with the secondrelease film, and the other side of the dustproof sound transmission film is bonded with the first release film; the bonding strength between the dustproof sound-transmitting film assembly and the first release film is greater than that between the dustproof sound-transmitting film assembly and the second release film, so that the first release film cannot be separated from the dustproof sound-transmitting film assembly in the process of tearing off the second release film; when the second release film is torn off, one side of the dustproof sound-transmitting film assembly has viscosity, so that the dustproof sound-transmitting film assembly can be directly adhered to the MEMS and a traditional dispensing process is not needed; the acoustic performance of acoustic components such as a microphone can be guaranteed, a one-step dispensing process is omitted, and the operation is simpler; and meanwhile, the MEMS is ensured to have a relatively strong dustproof effect.

Description

technical field [0001] The invention relates to the technical field of membrane materials, in particular to a dustproof sound-permeable membrane composite and a preparation method thereof. Background technique [0002] With the progress of society, people have higher and higher requirements for mobile phones, notebook computers and other electronic products. It is getting smaller and smaller, which is convenient for people to carry; therefore, the size of the matching electronic parts also needs to be continuously reduced, while the performance and consistency need to be continuously improved. [0003] In the above background, MEMS, an electronic component, has attracted people's attention. MEMS is a micro-electromechanical system, also known as a micro-electromechanical system. It refers to a high-tech device with a size of a few millimeters or even smaller. Its internal structure is generally At the micron or even nanometer level, it is an independent intelligent system. ...

AI Technical Summary

Problems solved by technology

In the process of applying MEMS to acoustic components such as microphones, in order to prevent external debris from affecting the acoustic performance and service life of acoustic components such as microphones, it is necessary to paste a dust-proof and sound-permeable film on MEMS. The method is to inject glue into the corresponding position on the MEMS by using the dispensing process, and then attach the dust-proof sound-permeable film to the MEMS, so that it can play a good role in dust-proofing the acoustic components such as the microphone; but the There are also big defects in the bonding method. On the one hand, it is easy to have uneven glue distribution during the glue dispensing process, resulting in uneven surface after the glue is cemented. The bond strength between the dust-proof sound-permeable membrane and MEMS It is not high and easy to separate; on the other hand, the glue will have a certain wetting effect on the dust-proof and sound-permeable membrane, thereby reducing the sound-permeability of the dust-proof and sound-permeable membrane, and then affecting the acoustic performance of acoustic components such as microphones; the existence of these problems , greatly influenced the further development and application of MEMS

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