A kind of sapphire screen cover glass and preparation method thereof

Abstract

The invention discloses a sapphire screen cover glass. The sapphire screen cover glass is compounded by using a sapphire ultrathin sheet and a flexible material, and the sapphire ultrathin sheet is attached to the soft material. A method for manufacturing the sapphire screen cover glass comprises the following steps: polishing a single side of a sapphire single-crystal block which is positioned and subjected to an intelligent stripping process; cracking sapphire into an ultrathin sheet by adopting an intelligent stripping technology; polishing single sides of the sapphire ultrathin sheet and the stripped sapphire single-crystal block; cleaning the sapphire ultrathin sheet to remove polishing and grinding liquid left on the polished surface; jointing the sapphire ultrathin sheet with the soft material by using a conductive adhesive to obtain the sapphire screen cover glass. By adopting the sapphire screen cover glass and the manufacturing method thereof, the defects of the conventional sapphire are overcome, the advantages are brought into play, the features of scratching resistance and high touch-control sensitivity of sapphire are kept, the features of sapphire become outstanding, and the production cost of a screen protection plate is lowered greatly.

Description

technical field [0001] The invention relates to a sapphire screen cover glass and a preparation method thereof, which are suitable for 3C communication devices, tablet computers and multi-plane dual-window scanners (POS). Background technique [0002] Currently used protective film materials can be divided into two types: strengthened glass and resin film, each of which has its own advantages and disadvantages. In addition to being slightly inferior in hardness, tempered glass also suffers from poor processability and safety. The resin film is mainly due to its poor surface hardness. As a cover glass, it is easy to be scratched, which may cause damage to some functions, such as insensitive touch, and easy failure to read barcodes. [0003] At present, most of the protective glass used in 3C communication devices is Corning's Gorilla series, which has the advantage of low cost, but compared with sapphire protective glass, sapphire has a Mohs hardness of 9 (second only to dia...

AI Technical Summary

Problems solved by technology

However, for the direct processing of sapphire single crystal, using sapphire thin slices (0.2-0.5mm) as screen cover glass, because of its high surface hardness and high strength, direct processing and cutting will easily cause wear and tear, making downstream processing more difficult , also indirectly raises the follow-up production cost

Also because of the high production cost of sapphire single crystal, the cost of sapphire single chip is much higher than that of strengthened glass

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