Housing assembly, preparation method therefor, and electronic device

Patent metadata

Field	Value
Publication number	US-12528732-B2
Application number	US-202217582411-A
Country	US
Kind code	B2
Filing date	Jan 24, 2022
Priority date	Aug 27, 2019
Publication date	Jan 20, 2026
Grant date	Jan 20, 2026

Abstract

A housing assembly, a preparation method therefor and an electronic device are provided in the present disclosure. The housing assembly includes a glass body. The glass body has a first surface and a second surface opposite to the first surface. A plurality of protrusions are formed on the first surface. The protrusion is a pointed protrusion, or the protrusion includes at least one edge.

First claim

What is claimed is:

1 . A housing assembly, comprising:
a glass body, having a first surface and a second surface opposite to the first surface; a plurality of protrusions being formed on the first surface, wherein the plurality of protrusions are pointed protrusions, or the plurality of protrusions comprise at least one edge; wherein the first surface has a surface roughness of about 2 to 3.2 microns; and the plurality of protrusions satisfy at least one of the following conditions:
the plurality of protrusions have a size of about 30 to 110 microns;
the plurality of protrusions have a height of about 1.3 to 3.6 microns; and/or
a spacing distance between two adjacent protrusions is equal to or greater than 0 to 60 microns.

2 . The housing assembly as claimed in claim 1 , wherein the plurality of protrusions are constructed in at least one of hexagonal crystal form, cubic crystal form, trigonal crystal form and tetragonal crystal form.

3 . The housing assembly as claimed in claim 1 , wherein at least one of the following conditions is met:
the first surface has a haze of about 30% to 85%; and/or the glass body has a transmittance of about 90% to 92%.

4 . The housing assembly as claimed in claim 3 , wherein
the haze is about 30% to 50%.

5 . The housing assembly as claimed in claim 3 , wherein
the surface roughness is about 2 to 3 microns; and/or the haze is about 50% to 85%.

6 . The housing assembly as claimed in claim 1 , wherein the plurality of protrusions further satisfy the following condition:
a shape of the pointed protrusions includes at least one of snowflake-like, spider web-like, pine needle-like and leaf-like shapes.

7 . The housing assembly as claimed in claim 6 , wherein
the spacing distance between two adjacent protrusions is about 1 to 20 microns.

8 . The housing assembly as claimed in claim 1 , wherein the glass body contains alumina, and a content of the alumina in the glass body is greater than or equal to 20% by mass percentage.

9 . The housing assembly as claimed in claim 1 , wherein the glass body meets at least one of the following conditions:
a strength of about 560 to 600 MPa; and/or a friction resistance under about 1 Kg load is greater than or equal to 3000 times.

10 . An electronic device, wherein the electronic device comprises:
a housing assembly, the housing assembly comprising a glass body which has a first surface and a second surface opposite to the first surface, a plurality of protrusions being formed on the first surface, wherein the plurality of protrusions are pointed protrusions, or the plurality of protrusions comprise at least one edge; a display assembly, the display assembly being connected to the housing assembly, a mounting space being defined between the display assembly and the housing assembly; and a motherboard, the motherboard being disposed in the mounting space and electrically connected to the display assembly; wherein the first surface has a surface roughness of about 2 to 3.2 microns; and the plurality of protrusions satisfy at least one of the following conditions:
the plurality of protrusions have a size of about 30 to 110 microns;
the plurality of protrusions have a height of about 1.3 to 3.6 microns; and/or
a spacing distance between two adjacent protrusions is equal to or greater than 0 to 60 microns.

11 . A method for preparing a housing assembly, wherein the method comprises:
etching at least part of an outer surface of a glass body with an etchant; and water-washing the glass body that has undergone the etching, the glass body after etching and water-washing having a first surface and a second surface opposite to the first surface, a plurality of protrusions being formed on the first surface, wherein the plurality of protrusions are pointed protrusions, or the plurality of protrusions comprise at least one edge; wherein the first surface has a surface roughness of about 2 to 3.2 microns; and the plurality of protrusions satisfy at least one of the following conditions:
the plurality of protrusions have a size of about 30 to 110 microns;
the plurality of protrusions have a height of about 1.3 to 3.6 microns; and/or
a spacing distance between two adjacent protrusions is equal to or greater than 0 to 60 microns.

12 . The method as claimed in claim 11 , wherein a molar percentage of sodium ions in the etchant is greater than or equal to 80%, based on a total number of moles of cations that can react with a fluorosilicic acid.

13 . The method as claimed in claim 11 , wherein prior to the etching, the method further comprises:
cooling the glass body and the etchant, respectively.

14 . The method as claimed in claim 13 , wherein cooling of the glass body is conducted with cold water of about 3 to 8 degrees Celsius to cool the glass body for about 10 to 15 s.

15 . The method as claimed in claim 13 , wherein the etchant after cooling treatment has a temperature of about 5 to 10 degrees Celsius.

16 . The method as claimed in claim 11 , wherein in the etching operation:
the glass body is immersed into the etchant at an inclination angle of about 30 to 45 degrees, the inclination angle being an angle between the glass body and a liquid level of the etchant, and then the glass body is oscillated in a direction parallel to the liquid level of the etchant.

17 . The method as claimed in claim 11 , wherein the etchant comprises:
about 10 to 30 wt. of NaF; about 30 to 50 wt. of NaHF 2 ; about 5 to 10 wt. of NH 4 F; about 2.5 to 10 wt. of fluorosilicic acid; about 35 to 50 wt. of inorganic acid; and about 30 to 50 wt. of water.

18 . The method as claimed in claim 17 , wherein the etchant further comprises about 5 to 10 wt. of barium sulfate.

19 . The method as claimed in claim 11 , wherein the water-washing comprises:
washing the glass body that has undergone the etching with ambient water and warm water in sequence, wherein the warm water has a temperature of about 35 to 40 degrees Celsius.

20 . The method as claimed in claim 11 , wherein after the etching, the method further comprises:
performing a strengthening treatment to the glass body that has undergone the etching.

Assignees

• Guangdong Oppo Mobile Telecommunications Corp Ltd

Inventors

• Yang Xiao
• Zou Pan

Classifications

• Y10T428/24355

  Continuous and nonuniform or irregular surface on layer or component [e.g., roofing, etc.] · CPC title

• H04M1/0266

  for a display module assembly · CPC title

• H04M1/0283

  for providing a decorative aspect, e.g. customization of casings, exchangeable faceplate · CPC title

• H05K5/03

  Covers · CPC title

• H05K5/0017

  with operator interface units · CPC title