Silica-based metal alloy film, case provided with same, electronic device and manufacture method

Abstract

The silicon content of the silica-based metal alloy film of the invention is 62-85% in terms of weight percent, the remaining weight percent is metals selected from clusters of aluminum, nickel, titanium, zinc or the combination of the metals. Furthermore, the silica-based metal alloy film is arranged on the case, e.g. case surface of the electronic device can be manufactured into an electronic device provided with the silica-based metal alloy film. The silica-based metal alloy film of the invention can not generate dampening to any electromagnetic signals, has metal glossiness and texture so as to add product values, and has the efficacies of unlikely color change, high defect-free yield, tiny difference in color among batches, good weather-proofing, strong adhesiveness, long storage time for semi-finished products and the like. In addition, the silica-based metal alloy film can be directly applied to inner die emitting technique of high yield to increase output, and can be manufactured by using direct current sprinkle plating method with low cost, thus reducing production cost.

Description

technical field [0001] The present invention relates to a kind of coating film, shell with coating film and electronic device and the manufacturing method of forming coating film on the shell surface, in particular to a kind of silicon base metal alloy film, shell with silicon base metal alloy film and electronic device and A manufacturing method for forming a silicon-based metal alloy thin film on the surface of a case. Background technique [0002] In order to increase the beauty and added value of the product, a decorative coating will be provided on the surface of the product. Taking mobile 3C products (such as mobile phones or personal digital assistants) as an example, in order to achieve the purpose of reducing production costs and mass production, most conventional mobile 3C products use plastic as the material for the shell, and only high-end models use magnesium alloys and other metal materials. In order to improve the cheap feeling produced by plastic materials,...

AI Technical Summary

Problems solved by technology

However, the decorative coating 12 has disadvantages such as uneven distribution, easy discoloration, low production yield, large color difference between batches, poor weather resistance, poor adhesion, and cannot be applied to high-production-efficiency in-mold injection processes.

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