Laser controlled ion exchange process and glass articles formed therefrom

A method for forming ion-exchanged regions in a glass article, the method comprising:

• contacting an ion exchange source with at least a first surface of the glass article;
• forming a first ion-exchanged region in the first surface by heating a first portion of the glass article with laser energy, wherein the first ion-exchanged region comprises a first compressive stress;
• and
• forming a second ion-exchanged region in the glass article by heating a second portion of the glass article with laser energy, wherein the second ion-exchanged region comprises a second compressive stress that is different from the first compressive stress,
• wherein:
• an ion exchange source is contacted with a second surface of the glass article,
• ion-exchanged regions are formed on the second surface of the glass article,
• the first surface and the second surface are different surfaces, and
• characteristics of at least one ion-exchanged region on the first surface and the ion-exchanged regions on the second surface are different.

A method for forming ion-exchanged regions in a glass article, the method comprising:

• contacting multiple ion exchange sources with at least one surface of the glass article;
• and
• forming ion-exchanged regions in the glass article by heating a portion of the glass article with a laser, wherein laser parameters are adjusted to produce ion-exchanged regions in the glass article for each ion exchange source, the ion-exchanged regions for each ion exchange source having different compressive stresses,
• wherein a depth of the ion-exchanged region is greater than 1 μm.