Camera module, dust removal system and dust removal method thereof

Abstract

The invention discloses a camera module, a dust removal system and a dust removal method.The camera module comprises a lens base and a photosensitive chip, the photosensitive chip is installed in the lens base, the lens base comprises a lens base body and a melting area, the melting area is arranged on the periphery of the lens base body, and the melting temperature of the melting area is lower than that of the lens base body; the melting area on the lens base main body is melted or fused through laser, so that the lens base, a lens or a motor does not need to be disassembled, dust falling on the surface of the photosensitive chip can be quickly removed, and the repair cost of removing dirt and dead pixels of the camera module is reduced.

Description

technical field [0001] The invention relates to the field of optical elements, in particular to a camera module, a dust removal system and a dust removal method suitable for removing chip stains. Background technique [0002] The current camera module is generally assembled from photosensitive chips, lenses, bases, circuit boards (including hard and flexible circuit boards) and connectors. The assembly process must be carried out in a clean room. At the same time, the product needs to be baked , vibration, focusing, welding, testing and a series of procedures to achieve the expected function and reliability. Although clean rooms have the definitions of class 100, class 1000, and class 10,000, and there are corresponding requirements that the number of dust particles with a diameter of 0.5 μm per unit foot of air can be up to 100, 1,000, and 10,000, but the camera module passes a series of automation equipment After the assembly and production are completed with manual proce...

AI Technical Summary

Problems solved by technology

Although clean rooms have the definitions of class 100, class 1000, and class 10,000, and there are corresponding requirements that the number of dust particles with a diameter of 0.5 μm per unit foot of air can be up to 100, 1,000, and 10,000, but the camera module passes a series of automation equipment After the assembly and production are completed with manual processes, the dust particles generated by personnel, equipment or the environment may still fall on the surface of the photosensitive chip, and may also fall on other areas around the photosensitive chip

If the dust particles fall on the surface of the photosensitive chip, after the detection of the detection equipment, the dust particles will cover the photosensitive pixels on the photosensitive chip, which will cause the unfavorable phenomenon of bad pixels in the image opening or imaging of the camera module

For the defective products detected, most module factories will repair and solve the problem by removing the mirror base. Generally, the motor and lens are precisely assembled on the mirror base, and the motor, lens and mirror base need to be dismantled at the same time. The disassembly process Not only is it time-consuming, but the motor and lens are easily damaged during the disassembly process, which directly leads to the scrapping of the device. Therefore, once there are dust particles on the photosensitive chip, even if there is only one, it may cause the scrapping of the entire camera module and waste production resources, increase the repair cost of the camera module, and reduce the production efficiency of the enterprise

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