Glass shell structure and preparation method thereof

Abstract

The invention discloses a glass casing structure, which comprises a glass shell and a PET composite decorative film attached to the inner surface of the glass shell. The PET composite decorative filmcomprises a PET substrate. The side face of the PET substrate that is attached to the glass shell is a binding surface; and the side face of the PET substrate that is far from the glass shell is a decorative surface. The decorative surface of the PET substrate is successively provided with an ink printing layer, a UV grained layer and an optical coating layer. The optical coating layer of the PETcomposite decorative film is equipped with an LDS antenna. The invention also discloses a manufacturing method of the glass shell structure. By the utilization of the large area of the back glass shell, the antenna can be designed freely. In addition, there is no shell interference or shielding, an excellent antenna effect can be realized, and the requirements of millimeter wave of 5G antenna canbe met. Meanwhile, the glass shell structure has a decorative function, has novel appearance, is light and stylish, can further meet the detachable requirement of personalized customization, and has waterproof, anti-drop and anti-cracking characteristics.

Description

technical field [0001] The invention relates to a shell structure, in particular to a glass shell structure and a preparation method thereof. Background technique [0002] With mobile phones, wearable electronic products, mobile electronics and other 3C electronic products stepping into the 5G era, product casings demand wireless network antennas, thinner, fashionable, and more practical products. There are more and more existing electronic product casings. Use glass materials that have less impact on the signal, and more and more products such as mobile phones, wearable products, and mobile electronics use complex shapes such as gradients, curved surfaces, and 3D curved surfaces. Although the transmission speed of the 5G wireless network is fast, the millimeter wave used due to the large amount of data carried is easy to be interfered with, which puts forward new requirements for the existing electronic product casing. Traditional metal, carbon fiber and other casing materi...

AI Technical Summary

Problems solved by technology

Although the transmission speed of the 5G wireless network is fast, the millimeter wave used due to the large amount of data carried is easy to be interfered with, which puts forward new requirements for the existing electronic product casing. Traditional metal, carbon fiber and other casing materials with signal shielding have already It is difficult to meet the needs of electronic products

Although glass does not affect the transmission of wireless signals and has high strength, it has insufficient toughness, is fragile, and is not resistant to falling. It is often damaged in daily use, especially the popular 3D curved glass. The bending machine has weak resistance to falling. More susceptible to damage from bumps or drops in everyday use

At the same time, due to the long production time of the existing 3D glass hot-pressing process, complicated processes such as glass sweeping and CNC grinding, and low yield rate, it is difficult to mass-produce 3D hot-bending glass, and the cost is high, making it difficult to apply it to mobile phones on a large scale. Or consumer electronics products; in terms of surface decoration, due to the complex shape of 3D glass, only relatively simple surface treatment processes such as surface printing and coating can be used, and it is difficult to use UV transfer printing optical texture decoration treatment, resulting in a single appearance effect, and can be selected less sexual

[0003] Due to the limitations of traditional manufacturing processes, glass structural parts such as glass screens, panels, and back covers are pasted on plastic or metal casings with glue or adhesive. Once the glass structure is damaged, it is difficult to repair the overall structure and requires professional maintenance. It is operated by personnel, and often needs to be replaced together with the assembled structural parts attached to it. General users cannot operate, which brings great difficulties to product after-sales and maintenance.

For high-end electronic products, while using glass materials to enhance the fashion and novelty of the appearance, because the glass structural parts of the traditional bonding process are bonded with glue or back adhesive, it cannot meet the needs of high-end customers to provide customized fashionable detachable structures;

[0004] Mobile phone antennas have developed into the 5G era, and the transmission speed of millimeter waves is getting faster and faster. However, due to the short wavelength and poor electromagnetic wave diffraction ability, they are very sensitive to the metal shell material of the mobile phone and the location of the antenna. Wave needs to increase the number of antennas to improve performance

The increase in the number of antennas also means that the antenna needs to be placed in a larger space. A traditional antenna requires a few millimeters, a 4×4 mimo antenna requires an area of ​​10mm×10mm, and an 8×8 array antenna requires a larger area. Therefore, the traditional The thickness direction of the mobile phone and the space around the circle and the internal antenna structure can no longer meet the needs of 5G signals

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