Laser-colored sapphire material

Patent metadata

Field	Value
Publication number	US-11325860-B2
Application number	US-201916583204-A
Country	US
Kind code	B2
Filing date	Sep 25, 2019
Priority date	Sep 10, 2015
Publication date	May 10, 2022
Grant date	May 10, 2022

Abstract

A colored sapphire material and methods for coloring sapphire material using lasers are disclosed. The method for coloring the sapphire material may include positioning the sapphire material over an opaque substrate material, exposing the opaque substrate material to a laser beam passing through the sapphire material to impact the substrate material, and inducing a chemical change in a portion of the sapphire material exposed to the laser beam. The method may also include creating a visible color in the portion of the sapphire material as a result of the chemical change. The colored sapphire material may include a first transparent portion, and a second, colored portion substantially surrounded by the first portion. The second, colored portion may have a chemical composition different than that of the first portion.

First claim

What is claimed is:

1. A sapphire component, comprising:
a first portion; and
a second portion integrally formed with the first portion and having a chemical composition that is distinct from the first portion, wherein:
the second portion is optically contrasted with respect to the first portion.

2. The sapphire component of claim 1 , wherein:
the first portion is substantially transparent; and
the second portion is substantially opaque and defines a visible color distinct from a color of the first portion.

3. The sapphire component of claim 1 , wherein the second portion has an oxygen content that is distinct from an oxygen content of the first portion.

4. The sapphire component of claim 1 , wherein:
the first portion defines a primary surface of the sapphire component; and
the first and second portions define a secondary surface of the sapphire component.

5. The sapphire component of claim 4 , wherein the second portion extends from the secondary surface and towards the primary surface.

6. The sapphire component of claim 5 , wherein a chemical composition of the second portion varies between the primary and secondary surfaces.

7. An electronic device, comprising:
an exterior portion comprising constituent elements; and
a colored region formed within the exterior portion and from the constituent elements, the colored region comprising embedded atoms chemically distinct from, and positioned among, the constituent elements.

8. The electronic device of claim 7 , wherein the embedded atoms define a visible color of the colored region.

9. The electronic device of claim 8 , wherein:
a chemical characteristic of the embedded atoms varies over a dimension of the colored region; and
the visible color changes along the dimension of the colored region based on the chemical characteristic of the embedded atoms.

10. The electronic device of claim 7 , wherein the colored region is visible through the exterior portion.

Assignees

• Apple Inc

Inventors

• Li Michael M
• Fagan Christopher R
• Prasad Anubhav

Classifications

• B01J19/121 Primary

  Coherent waves, e.g. laser beams (lasers per se H01S3/00) · CPC title

• B23K2103/54

  Glass · CPC title

• C01F7/021

  After-treatment of oxides or hydroxides · CPC title

• B23K26/50

  Working by transmitting the laser beam through or within the workpiece · CPC title

• B01J2219/0879

  Solid · CPC title