Patent ID: 8245535

Claim:
A method of strengthening a glass plate, the method comprising: performing a plasma treating process on both surfaces of a glass plate so that a plasma of the plasma treatment directly contacts the surfaces of the glass plate and a surface pore variation of the glass plate after the plasma treating process is reduced relative to the surface pore variation of the glass plate before the plasma treating process, wherein the surface pore variation comprises a variation of an average size of pores in different unit areas of the surface, a variation of an average density of pores in different unit areas of the surface, a variation of an average depth of pores in different unit areas of the surface, or a variation of a relief of pores in different unit areas of the surface; and after the plasma treating process, performing a chemical strengthening process on both surfaces of the glass plate to form a strengthened thin layer, and performing a post-plasma treating process on both surfaces of the glass plate after the chemical strengthening process.