Window manufacturing method, window manufactured by the method, and electronic apparatus including the window

A window which is a glass substrate comprising:

• an upper surface comprising a convex portion and a concave portion;
• a lower surface facing the upper surface;
• and
• silicon dioxide,
• wherein:
• the upper surface has a surface roughness ranging from about 10 nm to about 1000 nm,
• a first concentration of silicon in a portion of the window which is spaced apart from the lower surface and comprises the upper surface is higher than a second concentration of silicon in another portion of the window, and
• the portion of the window comprising the upper surface has a thickness ranging from about 20 nm to about 200 nm.

An electronic apparatus comprising:

• a display device having a module region defined therein, and
• an electronic module disposed to correspond to the module region,
• wherein:
• the display device comprises a display panel and a window disposed on the display panel,
• the window which is a glass substrate comprises an upper surface comprising a convex portion and a concave portion, a lower surface facing the upper surface, and silicon dioxide,
• the upper surface has a surface roughness ranging from about 10 nm to about 1000 nm,
• a first concentration of silicon in a portion of the window which is spaced apart from the lower surface and comprises the upper surface is higher than a second concentration of silicon in another portion of the window, and
• the portion of the window comprising the upper surface has a thickness ranging from about 20 nm to about 200 nm.