COVER LENS FOR CONSUMER ELECTRONICS DEVICE
Embodiments of the invention disclose a method of producing a portable electronic device cover glass. The method comprises providing a portable electronic device cover glass preform of a predefined thickness, for example ranging from 10 micrometers to 600 micrometers, and texturing a surface of the portable electronic device cover glass preform such that said surface is provided with a roughness that simulates the surface of paper in terms of a user's reading experience and writing experience.
1 . A method of producing a portable electronic device cover glass, the method comprising:
providing a portable electronic device cover glass preform with a thickness of maximum 600 micrometers, and
texturing a surface of the portable electronic device cover glass preform such that said surface is provided with a roughness that simulates the surface of paper in terms of reading and writing experience.
2 . The method of claim 1 , where the portable electronic device cover glass preform has a maximum thickness in the range 10 micrometers to 600 micrometers.
3 . The method of claim 1 , wherein texturing the surface of the portable electronic device cover glass preform comprises texturing of the glass preform using a laser.
4 . The method of claim 1 , wherein texturing the surface of the portable electronic device cover glass preform comprises texturing of the glass preform through wet chemical etching.
5 . The method of claim 1 , wherein texturing the surface of the portable electronic device cover glass preform comprises texturing of the glass preform through dry chemical etching.
6 . The method of claim 1 , wherein texturing the surface of the portable electronic device cover glass preform comprises texturing of the glass preform through media blasting.
7 . The method according to any one of the claim 1 , wherein texturing the surface of the portable electronic device cover glass preform comprises hot forming of the glass preform with a mold at a temperature above the glass transition temperature, T g , of the portable electronic device cover glass preform.
8 . The method according to claim 7 , further comprising texturing the mold by one or more of laser structuring, media blasting, reactive ion etching, deep reactive ion etching, wet chemical etching electro-discharge machining and electro-chemical machining.
9 . A method of producing a portable electronic device cover glass, the method comprising:
providing a portable electronic device cover glass preform with a thickness of maximum 600 micrometers,
texturing a surface of the portable electronic device cover glass preform such that said surface is provided with a mean roughness, Ra, in the range 0.8 micrometers to 1.5 micrometers,
a mean spacing of profile elements, Rms, in the range 110 micrometers to 190 micrometers, and/or
an average profile peak height, Rp, in the range 3.3 micrometers to 4.6 micrometers.
10 . The method of claim 9 , where the portable electronic device cover glass preform has a maximum thickness in the range 10 micrometers to 600 micrometers.
11 . The method of claim 9 , wherein texturing the surface of the portable electronic device cover glass preform comprises texturing of the glass preform using one of the following: a laser, wet chemical etching, dry chemical etching, media blasting.
12 . The method according to any one of the claim 9 , wherein texturing the surface of the portable electronic device cover glass preform comprises hot forming of the glass preform with a mold at a temperature above the glass transition temperature, T g , of the portable electronic device cover glass preform.
13 . The method according to claim 7 , further comprising texturing the mold by one or more of laser structuring, media blasting, reactive ion etching, deep reactive ion etching, wet chemical etching electro-discharge machining and electro-chemical machining.
14 . A portable electronic device cover glass, the portable electronic device cover glass having
a mean roughness, Ra, in the range 0.8 micrometers to 1.5 micrometers,
a mean spacing of profile elements, Rms, in the range 110 micrometers to 190 micrometers, and
an average profile peak height, Rp, in the range 3.3 micrometers to 4.6 micrometers.
15 . A portable electronic device cover glass, the portable electronic device cover glass having a surface that simulates the surface of paper.
16 . A portable electronic device cover glass according to claim 14 , where the portable electronic device cover glass preform has a maximum thickness in the range 350 micrometers to 450 micrometers.