Ultra-thin glass cover plate, ultra-thin strengthened glass cover plate and preparation method thereof

Abstract

The invention discloses an ultra-thin glass cover plate, an ultra-thin strengthened glass cover plate and a preparation method thereof. The preparation method of the ultra-thin glass cover plate is to use an etching solution to spray an ultra-thin glass master sheet with an acid-resistant ink corresponding to the cutting pattern on the front and an ultra-thin glass master sheet with a thickness of less than or equal to 150um arranged on the back of the acid-resistant ink into a shape and the cutting pattern. Consistent ultra-thin glass cover. In this way, the ultra-thin glass master sheet is directly divided into ultra-thin glass cover plates by means of chemical corrosion, so there will be no external mechanical stress acting on the large-sized ultra-thin glass, so the cutting edge of the ultra-thin glass cover plate will not be affected. There will be no cracks and breakage. In addition, the acid-resistant ink can be used to form cutting patterns of any shape, so the shape and outline of the ultra-thin glass cover plate obtained by the preparation method are also arbitrary, so as to be suitable for different brands and types of mobile phone screens.

Description

technical field [0001] The present invention relates to the technical field of display screen protection covers, in particular to a protection cover used as a display screen in, for example, a smart phone or a tablet computer or a TV device, and more particularly, to an ultra-thin glass cover, an ultra-thin tempered glass Cover plate and preparation method thereof. Background technique [0002] With the advancement of technology, smartphones have become an indispensable production tool in people's daily lives. In order to improve the visual experience, such as when watching videos or playing games and other applications, to bring users better operability and viewing experience, mobile phone manufacturers use ultra-narrow bezel technology, Liu Haiping technology, and water drop screen technology as much as possible. Increase the screen-to-body ratio so that the same front area of ​​the fuselage can accommodate a larger screen. However, due to the difficulty of placing the h...

AI Technical Summary

Problems solved by technology

The current folding screen mobile phones are all designed based on the flexible screen of OLED organic light-emitting diode technology, and the protective cover on the OLED flexible screen is mostly made of plastic flexible material, although the plastic cover has good toughness and basically meets the folding requirements. However, due to the limitations of its mechanical properties, the plastic cover is easy to scratch, has low impact strength, and is not resistant to falling. It cannot protect the display screen very well, and it will cause surface cracks and deformation after being folded many times. And the screen is prone to defects such as cracks and ripples, which directly affect the use of the product and reduce the life of the product

However, the bendability of the conventional glass cover is poor, which is not conducive to the bending of OLED flexible screens.

Therefore, some glass manufacturers have proposed a plan to make glass cover plates with ultra-thin glass, but the problem in the existing solutions is that in the glass production process, large-sized ultra-thin glass substrates must be processed into target-specific, Smaller size ultra-thin glass cover plates can be put into use. Mechanical cutting and laser cutting are the most common methods of cutting glass, and whether mechanical cutting or laser cutting is used, the glass is very easy to produce microscopic edges on the cutting edge of the glass during cutting. Cracks, and microcracks at the cutting edge will greatly reduce the strength of the glass and make the glass unable to bend. Moreover, glass with larger edge cracks will shatter under the action of stress during the chemical strengthening process. crack

Because the thickness of ultra-thin glass is too thin, it is very difficult to polish and remove edge cracks by mechanical or chemical methods before chemical strengthening. Picking and handling during processing are very difficult, which can easily lead to glass breakage

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