Low-gloss metal plate and method for fabricating the same

Patent metadata

Field	Value
Publication number	US-11446727-B2
Application number	US-202117371196-A
Country	US
Kind code	B2
Filing date	Jul 9, 2021
Priority date	Feb 8, 2021
Publication date	Sep 20, 2022
Grant date	Sep 20, 2022

Abstract

A low-gloss metal plate includes a metal body and a plurality of metal pattern units. The metal body has a first surface and a second surface opposite to each other. The plurality of metal pattern units protrude from the first surface and are arranged to form a regular pattern. One of the plurality of metal pattern units has a top, a base and a sidewall. The base at least partially overlaps with the first surface. The sidewall connects the top with the base and forms an angle less than 60° with the base.

First claim

What is claimed is:

1. A low-gloss metal plate serving as a metal part of a display housing, comprising:
a metal body, having a first surface and a second surface opposite to each other; and
a plurality of metal pattern units, protruding from the first surface and arranged to form a regular pattern;
wherein one of the plurality of metal pattern units has a top, a base and a sidewall; the base at least partially overlaps with the first surface; the sidewall connects the top with the base and forms an angle less than 60° with the base; wherein the low-gloss metal plate has a gloss substantially less than 20 GU.

2. The low-gloss metal plate according to claim 1 , wherein a ratio of a pattern area formed by a sum of top areas of the plurality of metal pattern units to a total area of the first surface is between 15% and 85%; and the tops of the plurality of metal pattern units, the sidewalls of the plurality of metal pattern units and a remaining portion of the first surface without counting portions overlapping with the bases of the plurality of metal pattern units jointly have a light reflectivity between 15% and 75%.

3. The low-gloss metal plate according to claim 1 , wherein a ratio of a width of the base to that of the top is substantially between 2 to 15.

4. The low-gloss metal plate according to claim 1 , wherein the angle is 30°.

5. The low-gloss metal plate according to claim 1 , wherein a ratio of a height of the plurality of metal pattern units to an interval between two adjacent tops of the plurality of metal pattern units is substantially between 0.3 and 0.5.

6. The low-gloss metal plate according to claim 1 , wherein the plurality of metal pattern units have a plurality of first metal pattern subunits and a plurality of second metal pattern subunits with different shapes.

7. The low-gloss metal plate according to claim 1 , wherein the top has a polygonal top-view profile.

8. A method for fabricating a low-gloss metal plate serving as a metal part of a display housing, comprising:
providing a metal body having a first surface and a second surface opposite to each other; and
performing a physical processing step on the first surface to form a plurality of metal pattern units protruding from the first surface and arranged to form a regular pattern;
wherein one of the plurality of metal pattern units has a top, a base and a sidewall; the base at least partially overlaps with the first surface; the sidewall connects the top with the base and forms an angle less than 60° with the base; wherein the low-gloss metal plate has a gloss substantially less than 20 GU.

9. The method according to claim 8 , wherein the physical processing step is selected from a group consisting of a rolling step, a stamping step, a malleating step, milling and arbitrary combinations thereof.

10. The method according to claim 8 , wherein a ratio of a pattern area formed by a sum of top areas of the plurality of metal pattern units to a total area of the first surface is between 15% and 85%; and the tops of the plurality of metal pattern units, the sidewalls of the plurality of metal pattern units and a remaining portion of the first surface without counting portions overlapping with the bases of the plurality of metal pattern units jointly have a light reflectivity between 15% and 75%.

11. The method according to claim 8 , wherein a ratio of a width of the base to that of the top is substantially between 2 to 15.

12. The method according to claim 8 , wherein the angle is 30°.

13. The method according to claim 8 , wherein a ratio of a height of the plurality of metal pattern units to an interval between two adjacent tops of the plurality of metal pattern units is substantially between 0.3 and 0.5.

14. The method according to claim 8 , wherein the plurality of metal pattern units have a plurality of first metal pattern subunits and a plurality of second metal pattern subunits with different shapes.

15. The method according to claim 8 , wherein the top has a polygonal top-view profile.

Assignees

• Qisda Corp

Inventors

• Tsai Ying-Tsung
• Wu cheng-sheng
• Ho Han-Kuang

Classifications

• H05K5/04

  Metal casings · CPC title

• H05K5/0243 Primary

  for decorative purposes · CPC title

• B44F1/02

  produced by reflected light, e.g. matt surfaces, lustrous surfaces · CPC title

• G09F9/35

  being liquid crystals (G09F9/302 takes precedence; liquid crystal materials C09K19/00; {liquid crystal panels comprising a number of electrodes in a single cell per se G02F1/13}) · CPC title

• H04M1/0283 Primary

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