Electronic device including plate, plate, and method for manufacturing plate

An electronic device comprising:

• a housing including a front plate facing in a first direction and a rear plate facing in a second direction opposite to the first direction;
• and
• a display disposed in the housing and including a screen area exposed through the front plate,
• wherein at least one of the front plate or the rear plate includes a plate exposed to an outside,
• wherein the plate comprises:
• a metal member including a first metal;
• and
• an oxide layer formed on at least one surface of the metal member, and
• wherein the at least one surface of the metal member comprises:
• a first portion including irregularities formed by at least one second metal included in a first solution, the at least one second metal being substituted for a portion of the metal member, the at least one second metal being removed from the metal member by the first solution, the irregularities being formed at positions, of the metal member, where the at least one second metal is removed, wherein the irregularities included in the first portion are irregularly distributed in the at least one surface of the metal member;
• and
• a flat second portion etched by the first solution, and
• wherein a height of the first portion is less than a height of the flat second portion.