Method and structure for improving strength of glass

Abstract

The invention relates to a method and structure for improving the strength of glass. The glass is included. The glass is further cleaned up, and then the glass is subjected to plasma treatment, wherein the water contact angle (WCA) of the glass surface is less than 10 degrees; then high-Young-modulus materials are sprayed on the glass; the sprayed glass is pre-baked at the pre-baking temperature of 90-120 DEG C; then the pre-baked glass is subjected to fixed baking at the fixed baking temperature of 160-200 DEG C for 50-70 min; the glass subjected to fixed baking is coated with a diaphragm, and then the diaphragm is subjected to UV impressing treatment; the glass is subjected to film coating treatment; and the bottom of the glass subjected to film coating treatment in S6 is covered. A coating layer, a diaphragm layer, a UV impressing layer and a film coating layer which are sequentially arranged on the glass from bottom to top are further included; the coating layer is composed of thehigh-Young-modulus materials, and the Young modulus of the high-Young-modulus materials is 100-1000 MPa; and the texture height of the UV impressing layer is 10-20 [mu]m. According to the method and structure for improving the strength of the glass, the cost is low, stress is concentrated, and optical performance is good.

Description

technical field [0001] The invention relates to a glass strength strengthening process for electronic products, in particular to a method and structure for increasing glass strength. Background technique [0002] With the advent of the 5G era, mobile phone glass materials have the advantages of high light transmission, high hardness, high wear resistance, good thermal and chemical stability, and low electromagnetic wave transmission attenuation performance, which will become the main trend of the smart terminal industry , the glass body has gradually become the mainstream design, but the brittleness and low strength of glass limit its further development. The glass body is fragile and not resistant to falling, which has always been a big problem to be solved. [0003] The existing ways to increase the strength of glass are physical strengthening or chemical strengthening, but chemically strengthened glass is prone to stress relaxation over time, that is, the mechanical str...

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Problems solved by technology

[0002] With the advent of the 5G era, mobile phone glass materials have the advantages of high light transmission, high hardness, high wear resistance, good thermal and chemical stability, and low electromagnetic wave transmission attenuation performance, which will become the main trend of the smart terminal industry , the glass body has gradually become the mainstream design, but its further development is limited by the inherent brittleness and low strength of the glass. The glass body is fragile and not resistant to falling, which is always a big problem to be solved

[0003] The existing ways to increase the strength of glass are physical strengthening or chemical strengthening, but chemically strengthened glass is prone to stress relaxation over time, that is, the mechanical strength will decrease to a certain extent with the surrounding environment and the passage of time; physical strengthening Glass is more prone to self-explosion than chemically strengthened glass; therefore, most of the glass back covers of electronic products are now covered with a layer of explosion-proof film on the tempered glass, but the film attachment process of 3D products is relatively tedious, and the equipment and materials are relatively expensive. The strength of the film on the glass is limited

[0004] At present, the back cover of mobile phones is pursuing thinner, diversified and colorful appearance, so PVD coating is indispensable. However, due to the impact of the target material on the glass surface, the stress layer on the glass surface is destroyed by PVD coating, resulting in hardened glass. decrease in intensity

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