Composite coating logo, logo preparation method, ceramic cover plate comprising logo and electronic equipment comprising logo
A composite coating and ceramic substrate technology, applied in the coating, metal material coating process, ion implantation plating, etc., can solve the problem of single black or white metal pattern, achieve high adhesion and improve scratch resistance Effect
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[0058] The Logo obtained by using the preparation method provided by the present invention has all the advantages of the above-mentioned composite coating Logo, and will not be repeated here.
[0059] In some embodiments of the present invention, a chromium metal layer and optionally a transition layer are prepared on the surface of the ceramic substrate by magnetron sputtering, and an optical layer is prepared on the surface of the chromium metal layer or the transition layer by magnetron sputtering , to obtain the composite coating Logo. The magnetron sputtering method is used to prepare the chromium metal layer, the optical layer and the optional transition layer, which can improve the bonding strength between the layers, thereby improving the scratch resistance of the Logo.
[0060] In some embodiments of the present invention, a chromium target is selected to deposit a chromium metal layer on the surface of the ceramic substrate by magnetron sputtering. The magnetron sput...
Embodiment 1
[0073] Such as figure 1 As shown, this embodiment is a composite coating Logo, including a chromium metal layer 21 for bonding with a ceramic substrate and an optical layer attached to the chromium metal layer 21. The optical layer is a silicon oxide layer 22, which is arranged in sequence, Silicon nitride layer 23 , silicon oxide layer 22 , silicon nitride layer 23 and silicon oxide layer 22 . The specific thickness values of each layer are listed in Table 1.
[0074] Composite coating Logo film layer thickness table in the embodiment 1 of table 1
[0075]
[0076] The composite coating Logo with the above structure in this embodiment shows silver when viewed from the front, and blue-green when viewed from the side.
Embodiment 2
[0078] Such as figure 2 and image 3 As shown, this embodiment is a ceramic cover plate, including a ceramic substrate 10 and the Logo 20 provided in Example 1 provided on the ceramic substrate 10. The preparation method of the ceramic cover plate in this embodiment includes the following steps:
[0079] Step a): Prepare high-gloss and polished ceramic products, and use a fully automatic twelve-slot ultrasonic cleaning machine to clean them;
[0080] Step b): According to the dimensional tolerance requirements, the screen printing ink is used to make a hollow Logo pattern, and then check whether it meets the requirements of the letter resistance test;
[0081] Step c): Put the ceramic substrate with the hollow Logo pattern into the transition chamber of the magnetron sputtering coating machine for preheating and drying. The process parameters of this process are: vacuumize to 8.0×10 -3 Pa, at the same time use the tungsten lamp in the cavity to bake and heat for 15min, the ...
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