Cutting method of tempered glass and cutting preset structure of tempered glass

Abstract

A cutting preset structure of tempered glass is provided, comprising a tempered glass substrate and at least one groove. The glass substrate forms at least one pressure stress layer and a tensile stress layer correspondingly from surface to inside in turn; the groove is formed on the pressure stress layer of the glass substrate and is overlapped with a certain preset cutting path.

Description

technical field [0001] The invention relates to a strengthening glass cutting method and a strengthening glass cutting preset structure. Background technique [0002] There are mainly two known glass strengthening methods, one is thermal strengthening and the other is chemical ion strengthening. For example, in a chemical ion strengthening process, the glass substrate to be strengthened, for example, can be placed in a molten potassium salt, so that the potassium ions exchange with the sodium ions on the surface of the glass, so that the surface of the glass substrate forms a layer Very thin compressive stress layer. Such as Figure 1A and Figure 1B As shown, corresponding to the compressive stress layer DOL, an appropriate tensile stress TS will be derived inside the strengthened glass 100 to achieve force balance as a whole. Compare Figure 1A and Figure 1B It can be seen that when the compressive stress layer DOL is thicker ( Figure 1B The thickness of the pressur...

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Problems solved by technology

Therefore, when the tensile stress TS is too large, the strengthened glass 100 will easily crack irregularly during cutting, resulting in an extremely low cutting yield.

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