Electronic device case and material layer details of the same

An electronic device comprising:

• a front cover that defines a front surface of the electronic device;
• a rear part that defines a rear surface of the electronic device;
• a side member that is disposed integrally with or separately from the rear part while surrounding a space defined between the front cover and the rear part;
• a display device disposed in the space and comprising a screen area exposed through the front cover;
• a communication circuit disposed in the space and being electrically connected to the side member that functions as an antenna of the communication circuit;
• and
• a processor electrically connected to the communication circuit,
• wherein the side member comprises:
• at least one hole area;
• a polymer member disposed on an inner wall of the hole area;
• and
• a first organic material layer inserted between one surface of the polymer member and the inner wall of the hole area,
• wherein one surface of the hole area comprises recesses of at least one of repeated or random patterns,
• wherein the first organic material layer is formed to conform to the recesses, and
• wherein a roughness of an area of the an outside of an inner wall of the hole area is smaller than a roughness of an area of the an inside of the inner wall of the hole area.

A case of an electronic device, the case comprising:

• a body part comprising a main body and at least one auxiliary body,
• wherein at least a portion of the main body is a metallic portion comprising a metallic material,
• wherein the at least one auxiliary body includes a first auxiliary body and is disposed adjacent to the metallic portion of the main body, and
• wherein at least a part of the first auxiliary body is used as an antenna and configured to transmit and receive signals;
• an insulation member disposed between the at least a part of the first auxiliary body and the main body;
• and
• a first bonding layer disposed between the insulation member and at least one section of the main body, and
• a second bonding layer disposed between the insulation member and the first auxiliary body,
• wherein a roughness of a periphery of a surface of the main body is smaller than a roughness of a central portion of the surface of the main body.

A electronic device comprising:

• a body part comprising a main body and at least one auxiliary body,
• wherein at least a portion of the main body is a metallic portion comprising a metallic material,
• wherein the at least one auxiliary body includes a first auxiliary body and is disposed adjacent to the metallic portion of the main body, and
• wherein at least a part of the first auxiliary body is used as an antenna and configured to transmit and receive signals;
• an insulation member disposed between the at least a part of the first auxiliary body and the main body;
• a first bonding layer disposed between the insulation member and at least one section of the main body,
• a second bonding layer disposed between the insulation member and the first auxiliary body;
• a communication circuit electrically connected to the antenna;
• and
• a printed circuit board on which the communication circuit is mounted,
• wherein a roughness of a periphery of a surface of the main body is smaller than a roughness of a central portion of the surface of the main body.

A portable communication device comprising:

• a display;
• a processor operatively coupled with the display;
• a communication circuit operatively coupled to the processor;
• and
• a housing including a side portion that includes a metallic member that forms at least a portion of a side exterior surface of the portable communication device and functions as an antenna of the communication circuit, wherein the side portion includes:
• a socket opening formed in the metallic member, the socket opening having a metallic curved inner surface,
• a bonding portion disposed on the metallic curved inner surface, the bonding portion including an organic material and an oxide of a metallic material forming at least a portion of the metallic member, and
• an insulating portion formed on the bonding portion disposed on the metallic curved inner surface such that a substantial portion of the socket opening remains open to accommodate an insertion of a connector,
• wherein a roughness of the metallic curved inner surface is different from a roughness of an area of the housing that is covered by the display.

A portable communication device comprising:

• a processor;
• a communication circuit operatively coupled to the processor;
• and
• a housing including a side portion that includes a metallic member that forms at least a portion of a side exterior surface of the portable communication device, wherein the side portion includes:
• a first metallic portion electrically connected with the communication circuit and configured to be used as an antenna, the first metallic portion extended from a front surface of the portable communication device to a rear surface of the portable communication device, the first metallic portion including a metallic material;
• a second metallic portion extended from the front surface to the rear surface, the second metallic portion spaced apart from the first metallic portion by a first gap extended from the front surface to the rear surface, the second metallic portion including the metallic material;
• and
• a layer disposed between the first metallic portion and the second metallic portion, wherein the layer includes:
• an insulating portion located in the first gap and extended between the front surface and the rear surface;
• a first bonding portion in contact with the first metallic portion and the insulating portion, the first bonding portion extended from the front surface to the rear surface and including an organic material and an oxide of the metallic material;
• and
• a second bonding portion in contact with the insulating portion and the second metallic portion, the second bonding portion extended from the front surface to the rear surface and including the organic material and the oxide of the metallic material,
• wherein a roughness of an inner surface of the first metallic portion facing the layer is different from a roughness of an area of the housing that is covered by a display.