Decoration panel for home appliances, home appliance including the same, and method for manufacturing the decoration panel

A method for manufacturing a decoration panel, comprising:

• preparing an aluminum substrate;
• forming an engraved pattern in one surface of the aluminum substrate, the engraved pattern having:
• a preset width from a first end of one of the engraved patterns to a second end of the one of the engraved patterns;
• a preset depth from the one surface to a deepest part of the engraved pattern, the engraved pattern having the preset width from the first end to the second end having repeated curved adjacent preset widths of first ends and second ends connected to each other without having a flat portion between the first ends and the second ends, wherein the preset width of the engraved pattern ranges from 3.0 mm to 10.0 mm, and when the preset width of the engraved pattern is 3 mm to 6 mm, a ratio of the preset depth (μm) to the preset width (mm) is 25 or more, and when the preset width of the engraved pattern is 7 mm to 10 mm, a ratio of the preset depth (μm) to the preset width (mm) is 59 or more;
• forming micro unevenness in a surface of the engraved pattern;
• performing anodizing on the surface of the aluminum substrate in which the micro unevenness is formed to form a porous aluminum oxide layer having a plurality of pores;
• performing sealing to close the plurality of pores of the porous aluminum oxide layer;
• and
• machining an edge of the aluminum substrate to a Chamfering (C) shape or a Rounding (R) shape after the forming of the engraved pattern.

A home appliance comprising:

• a main body;
• and
• a door to open or close the main body;
• at least one of the main body or the door comprises an aluminum decoration panel,
• wherein the aluminum decoration panel comprises:
• an aluminum substrate having one surface with an engraved pattern, the engraved pattern having:
• a preset width from a first end of one of the engraved patterns to a second end of the one of the engraved patterns;
• a preset depth from the one surface to a deepest part of the engraved pattern, the engraved pattern having the preset width from the first end to the second end having repeated curved adjacent preset widths of first ends and second ends connected to each other without having a flat portion between the first ends and the second ends, wherein the preset width of the engraved pattern ranges from 3.0 mm to 10.0 mm, and when the preset width of the engraved pattern is 3 mm to 6 mm, a ratio of the preset depth (μm) to the preset width (mm) is 25 or more, and when the preset width of the engraved pattern is 7 mm to 10 mm, a ratio of the preset depth (μm) to the preset width (mm) is 59 or more;
• and
• micro unevenness formed in a surface of the engraved pattern;
• a porous aluminum oxide layer having a plurality of pores, and formed on the engraved pattern;
• and
• a sealing layer formed to close the plurality of pores of the porous aluminum oxide layer, wherein an edge of the aluminum substrate is in a Chamfering (C) shape or a Rounding (R) shape.