Textured glass component for an electronic device enclosure

1. An electronic device comprising: a display; an enclosure at least partially surrounding the display and comprising: a front cover assembly including a front glass member positioned over the display; and a rear cover assembly including a rear glass member defining a protruding portion defining an opening and defining a textured region having a gloss value less than 50 as measured at 60 degrees; and a camera assembly coupled to an interior surface of the rear cover assembly and including a camera module positioned at least partially within the opening.

2. The electronic device of claim 1 , wherein:

the enclosure further comprises a housing positioned between the front cover assembly and the rear cover assembly;

the housing comprises a pair of metal segments separated by a dielectric segment;

the rear glass member further defines a base portion surrounding the protruding portion; and

the protruding portion extends outward from the base portion.

3. The electronic device of claim 2 , wherein a ratio of a thickness of the protruding portion to a thickness of the base portion is from 1.5 to 2.5.

4. The electronic device of claim 2 , wherein the rear glass member includes a compressive stress layer extending from an exterior surface of the base portion and an exterior surface of the protruding portion.

5. The electronic device of claim 4 , wherein the camera assembly is bonded to the interior surface of the rear cover assembly by an adhesive layer thereby limiting a bending-induced tensile stress along the textured region.

6. The electronic device of claim 2 , wherein the textured region comprises surface features resulting from mechanical grinding and polishing.

7. The electronic device of claim 6 , wherein:

the camera assembly is coupled to an interior surface of the protruding portion; and

the protruding portion has a translucent appearance.

8. An electronic device comprising: an enclosure including a cover member formed from a glass material and defining: an exterior surface comprising: a raised region defining a first texture comprising surface features having a root mean square height from 0.2 microns to 2 microns; and a base region defining a second texture different than the first texture, the raked region protruding with respect to the base region; and a through-hole extending from the raked region to an interior surface of the cover member; and a camera assembly coupled to the interior surface of the cover member and comprising a camera module positioned at least partially in the through-hole.

9. The electronic device of claim 8 , wherein:

the second texture has second surface features having a second root mean square height;

the root mean square height of the first texture is a first root mean square height; and

the first root mean square height of the first texture is greater than the second root mean square height of the second texture.

10. The electronic device of claim 9 , wherein the second root mean square height of the second texture is from 1 nm to 125 nm.

11. The electronic device of claim 8 , wherein the surface features of the first texture define a mean peak curvature (SSc) ranging from 0.5 microns− to 2 microns −1 .

12. The electronic device of claim 8 , wherein:

the raised region defines a plateau; and

the exterior surface further defines a side region extending from the base region to the raised region.

13. The electronic device of claim 8 , wherein an end of the camera module is flush with the raised region.

14. The electronic device of claim 8 , wherein:

an exterior compressive stress layer extends into the glass material from the raised region and the base region of the exterior surface; and

an interior compressive stress layer extends into the glass material from the interior surface.

15. An electronic device comprising: an enclosure including: a front cover assembly comprising a front glass member; and a rear cover assembly comprising: a first glass portion having a first thickness and defining a textured region having a translucent appearance and defining:surface features having: a mean peak curvature (SSc) ranging from 0.5 microns 1 to 2 microns 1 and a root mean square slope (Sdq) from 0.1 to 1; and an opening positioned in the textured region; and a second glass portion at least partially surrounding the first glass portion and having a second thickness less than the first thickness; a camera assembly coupled to an interior surface of the rear cover assembly, the camera assembly comprising a camera module positioned at least partially within the opening; and a display positioned below the front cover assembly.

16. The electronic device of claim 15 , wherein the surface features define an autocorrelation length from 3 microns to 25 microns.

17. The electronic device of claim 15 , wherein: the first glass portion has a thickness greater than 1 mm and less than or equal to 2 mm; and the second glass portion has a thickness greater than 0.5 mm and less than 1 mm.

18. The electronic device of claim 15 , wherein:

the rear cover assembly further comprises a polymer-based coating disposed along an interior surface of the second glass portion; and

an interior surface of the first glass portion is free of the polymer-based coating.

19. The electronic device of claim 18 , wherein the camera assembly includes a support structure and the support structure limits bending of the rear cover assembly.

20. The electronic device of claim 15 , further comprising a wireless charging assembly coupled to the interior surface of the rear cover assembly.