A mobile terminal backplane, preparation method thereof, and mobile terminal
A mobile terminal and backplane technology, which is applied in the field of mobile terminal backplane processing, can solve the problems of small polishing removal, warping deformation, and lower yield rate, so as to reduce processing cost and difficulty, facilitate large-scale processing and application, The effect of low processing cost
Active Publication Date: 2019-07-05
DONGGUAN HUAJING POWDER METALLURGY
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Problems solved by technology
For ceramic products, due to the high hardness of the product itself, it can only be removed by diamond grinding to form curved surfaces and curved structures, which makes processing difficult, and the amount of polishing removal is small, easy to crack, and it is easy to occur when processing to less than 0.5mm Warping and deformation, resulting in a decrease in yield and an increase in cost
These are the difficulties that plague the large-scale application of ceramic products on mobile phone backplanes
Method used
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[0023] The present invention will be described in further detail below in combination with specific embodiments and with reference to the accompanying drawings.
[0024] The idea of the present invention is that the flat ceramic back plate can be prepared by injection molding or tape casting. Put the ceramic backboard product in a fixture with a certain structure. During the high-temperature sintering process, the ceramic product will be deformed due to the glass liquid phase. In this way, the high temperature and pressure are applied to the flat ceramic backplane. Under the combined effect of pressure, the prefabricated high-temperature and refractory fixture model drives the design deformation of the ceramic backplane product, so that the flat ceramic backplane can be bent into a ceramic backplane with a curved surface structure through high temperature heat bending.
[0025] Such as figure 1 As shown, the preparation method of the mobile terminal backplane includes the f...
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The invention discloses a mobile terminal back plate, a preparation method thereof and a mobile terminal, wherein the preparation method of the of the mobile terminal back plate comprises the following steps of S1, manufacturing a mobile terminal ceramic back plate in a flat plate shape; S2, putting the ceramic back plate into a sealed space formed by matching a lower burning bearing plate and an upper press plate, wherein the lower burning bearing plate and the upper press plate are made of identical high-temperature-resistant materials, the upper surface profile of the lower burning bearing plate and the inner surface profile of the upper press plate need to be identical to the shape of the ceramic back plate to be prepared, and the ceramic back plate has a curve surface structure; S3, performing high-temperature sintering at the temperature of 1300 to 1470 DEG C; meanwhile, exerting the pressure of 19 to 25N on the upper press plate so that the ceramic back plate is driven to be bent after the upper press plate is pressed down; performing heat insulation for 1 to 2h; then performing natural cooling; S4, opening the cooled upper burning bearing plate and the cooled upper press plate; preparing the ceramic back plate with the curve surface structure. During the preparation of the curve surface structure back plate, the qualification product rate is high; the processing cost is low.
Description
[0001] 【Technical field】 [0002] The invention relates to a mobile terminal backboard processing technology, in particular to a mobile terminal backboard, a preparation method thereof, and a mobile terminal. [0003] 【Background technique】 [0004] With the rapid development of the consumer electronics market, in addition to large-capacity hardware and diversified functions, mobile phone products also frequently introduce new materials for their appearance and structural parts, which have experienced the development process of plastic, glass, and metal. The requirements for mobile phone shell materials are high strength, good wear resistance, no deformation, and good signal passability. The 5G network that is about to be promoted and applied requires that the structural parts of mobile phones not only have the above characteristics, but also have a low dielectric constant to ensure stable signal transmission. Ceramic materials have comprehensive characteristics such as high f...
Claims
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Login to View More IPC IPC(8): C04B41/80
CPCC04B41/80
Inventor 张宁谢庆丰彭毅萍
Owner DONGGUAN HUAJING POWDER METALLURGY