Electronic device enclosure having a textured glass component
Textured cover assemblies for electronic devices are disclosed. The textured cover assemblies may provide a combination of optical and tactile properties to the electronic devices. In some cases, a textured cover assembly may be provided over decorative coating.
1 . A mobile phone comprising:
a display;
an enclosure surrounding the display and including:
a housing;
a front cover assembly positioned over the display, coupled to the housing, and defining a front surface of the mobile phone; and
a rear cover assembly coupled to the housing and defining a protrusion and an array of openings that extend through the protrusion, the rear cover assembly comprising:
a first cover member formed from a first glass material that at least partially defines a textured base region of the rear cover assembly, a surface texture of the textured base region having:
a root mean square height (Sq) in a range from 0.25 micrometers to 2 micrometers; and
a mean pitch between peaks in a range from 5 micrometers to 20 micrometers;
an interior coating disposed on an interior surface of the first cover member, comprising at least one color layer, and visible through the textured base region of the rear cover assembly; and
a second cover member coupled to the first cover member, formed from a second glass material, and at least partially defining a raised surface region of the protrusion and the array of openings; and
a plurality of camera modules, each of the camera modules extending into a respective opening of the array of openings.
2 . The mobile phone of claim 1 , wherein:
the textured base region of the rear cover assembly has a first gloss value; and
the raised surface region has a second gloss value that is greater than the first gloss value.
3 . The mobile phone of claim 2 , wherein the surface texture has a root mean square gradient (Sdq) that is greater than zero and less than 1.
4 . The mobile phone of claim 2 , wherein:
the rear cover assembly further comprises an oleophobic coating disposed on an exterior surface of the first cover member; and
the surface texture of the first cover member and the oleophobic coating together define the textured base region of the rear cover assembly.
5 . The mobile phone of claim 1 , wherein:
the interior coating is a first interior coating; and
the rear cover assembly further comprises a second interior coating disposed on an interior surface of the second cover member, comprising a second color layer, and visible through an exterior surface of the second cover member.
6 . The mobile phone of claim 1 , wherein the rear cover assembly further comprises a plurality of windows coupled to the second cover member, each window of the plurality of windows positioned over a respective camera module of the plurality of camera modules.
7 . The mobile phone of claim 2 , wherein a gloss value of the first cover member is in a range from 10 gloss units to 20 gloss units as measured at 60 degrees.
8 . A mobile phone comprising:
an enclosure including:
a front cover assembly; and
a rear cover assembly comprising:
a first glass cover member defining a surface texture that at least partially defines a first surface region of the rear cover assembly, the surface texture having:
a root mean square height (Sg) in a range from 0.25 micrometers to 2 micrometers; and
a root mean square slope (Sdg) in a range from 0.25 to less than 0.75; and
a second glass cover member:
at least partially defining a second surface region of the rear cover assembly that protrudes with respect to the first surface region; and
defining a plurality of openings that extend through the second glass cover member;
a camera assembly positioned below the second glass cover member and comprising a plurality of camera modules, each camera module of the plurality of camera modules extending into a respective opening of the plurality of openings; and
a display positioned below the front cover assembly.
9 . The mobile phone of claim 8 , wherein the second surface region of the rear cover assembly defines a plateau and has a gloss value that is greater than a gloss value of the first surface region.
10 . The mobile phone of claim 9 , wherein:
the surface texture of the first glass cover member is a first surface texture; and
the second glass cover member defines a second surface texture having a root mean square height (Sq) in a range from 1 nm to 125 nm.
11 . The mobile phone of claim 10 , wherein the first surface texture has a mean pitch between peaks in a range from 5 microns to 20 microns.
12 . The mobile phone of claim 8 , wherein:
the first surface region of the first glass cover member produces an amount of transmissive narrow angle scattering in a range from 5% to 30%; and
the rear cover assembly further comprises a coating including multiple color layers disposed along an interior surface of the first glass cover member.
13 . The mobile phone of claim 8 , wherein a gloss value of the first glass cover member is in a range from 5 gloss units to 20 gloss units as measured at 60 degrees.
14 . The mobile phone of claim 8 , wherein the root mean square slope is in a range from 0.1 to 0.5.
15 . A mobile phone comprising:
a display;
a set of camera modules; and
an enclosure at least partially surrounding the display and the set of camera modules, the enclosure including:
a first cover assembly positioned over the display and defining a front surface of the mobile phone; and
a second cover assembly defining a rear surface of the mobile phone and comprising:
a first glass cover member at least partially defines a textured first surface region of the second cover assembly, the textured first surface region producing a first amount of transmissive haze that is greater than or equal to 50%;
a second glass cover member:
coupled to the first glass cover member;
at least partially defining a protrusion of the second cover assembly, the protrusion defining a second surface region of the second cover assembly that produces second amount of transmissive haze that is less than the first amount of transmissive haze; and
defining a set of openings, each camera module of the set of camera modules extending into a respective opening of the set of openings; and
a housing coupled to the first cover assembly and the second cover assembly.
16 . The mobile phone of claim 15 , wherein the first amount of transmissive haze is in a range from 60% to 90%.
17 . The mobile phone of claim 15 , wherein the second surface region has a gloss value that is greater than the gloss value of the textured first surface region of the second cover assembly.
18 . The mobile phone of claim 15 , wherein:
each opening of the set of openings extends through the second glass cover member; and
the second cover assembly further comprises a set of windows coupled to the second glass cover member, each window of the set of windows positioned over a respective camera module of the set of camera modules.
19 . The mobile phone of claim 15 , wherein the housing comprises a set of metal segments that are separated by dielectric segments.
20 . The mobile phone of claim 15 , wherein the textured first surface region has a root mean square height (Sq) in a range from 0.25 micrometers to 2 micrometers.