Glass mobile phone rear cover thinning process

Abstract

The invention discloses a glass mobile phone rear cover thinning process, which is characterized in that compared with the prior art, the produced glass mobile phone rear cover (1) is provided with a hole site (2) for mounting a camera, and the four corners and four sides of the glass mobile phone rear cover (1) are provided with fixedly connected reinforcing ribs (3); the reinforcing rib (3) and the glass mobile phone rear cover (1) are seamlessly and fixedly connected or integrally formed, the glass mobile phone rear cover (1) comprises two or more layers of plane glass (4), a protective layer (5) is arranged on the plane glass (4), and the two or more layers of plane glass (4) are attached together through a bonding process. A series of problems existing in a glass mobile phone rear cover manufactured by a mobile phone shell rear cover manufacturing process are solved.

Description

technical field [0001] The invention relates to the field of glass mobile phone back cover manufacturing, in particular to a glass mobile phone back cover thinning process. Background technique [0002] At present, the materials used for the back cover of the existing mobile phone are generally glass, ceramic, metal and plastic. However, with the rise of wireless charging and 4G and 5G materials, metals will shield electromagnetic waves, making wireless charging and 4G and 5G signal transmission impossible, and are gradually being phased out. Ceramics and glass have a large proportion, but ceramics are fragile, and conventional flat glass is increasingly unable to meet people's needs. Because as the curved glass of mobile phones is becoming more and more common, such as the enhancement of camera functions, a local boss has appeared on the back cover of mobile phones, and the corresponding back cover continues to meet the needs of high-definition images and lidar scanners. ...

AI Technical Summary

Problems solved by technology

At present, major mobile phone operators are scrambling to release folding screen mobile phones. At present, the mainstream hard thick cover glass mobile phone back cover (thickness is 0.1mm-1.0mm) cannot be bent, and it is no longer suitable for folding screen mobile phones, only 0.005mm -0.100mm thick glass mobile phone back cover can meet the requirements of folding screen

The existing mature glass mobile phone rear cover molding process can only obtain a thickness of 0.05mm-2.0mm, and to meet the needs of folding screen mobile phones, it is necessary to use a thinning process to reduce the thickness to 0.005mm-0.100mm

[0005] When the glass mobile phone back cover is thick, the rigidity and strength of the glass mobile phone back cover (0.05mm-2.0mm thickness) are good, but when the glass mobile phone back cover gradually becomes thinner, the rigidity and strength of the glass mobile phone back cover will decrease. The sharp drop caused the following problems to occur in the thinning process of the back cover of the glass mobile phone: (1) When cleaning the back cover of the glass mobile phone, because the strength of the back cover of the glass mobile phone is reduced, when cleaning, including but not limited to water washing, air bubbles, wind blowing, etc. During the process, when the impact force in the process is greater than the strength of the back cover of the glass mobile phone, the back cover of the glass mobile phone is easy to break

When the impact force is too small, the surface of the back cover of the glass mobile phone will not be cleaned cleanly, and the foreign matter will cause defects on the surface of the back cover of the glass mobile phone during the thinning process, resulting in defects such as the strength, appearance, and abnormality of the display module of the back cover of the glass mobile phone.

(2) When the back cover of the glass mobile phone is thinned, the stress of the back cover of the glass mobile phone caused by the self-weight of the back cover of the glass mobile phone at the contact position of the bracket exceeds the strength of the back cover of the glass mobile phone, and the back cover of the glass mobile phone is easy to break

Although it can be solved by increasing the contact area between the back cover of the glass phone and the bracket, increasing the contact area between the back cover of the glass phone and the bracket during the thinning process will enlarge the shelf print on the contact part of the back cover of the glass phone, causing poor appearance

(3) When the back cover of the glass mobile phone is thinned, it is necessary to use auxiliary methods such as bubbling or ultrasound. Bubbling or ultrasound will aggravate the expansion of micro-cracks on the surface of the back cover of the glass mobile phone. The back cover of the glass mobile phone is getting thinner and thinner, and micro-cracks are easy Extending to the thickness of the entire glass phone back, thin glass phone backs are easily cracked

(4) The rigidity of the back cover of the glass mobile phone is reduced. When the large piece of glass mobile phone back cover is taken and placed, the glass mobile phone back cover will deform sharply at the position where it contacts the glass mobile phone back cover due to its own weight. When the deformation exceeds the allowable range of the glass mobile phone back cover, the glass The back cover of the phone will crack

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