Electronic device case and material layer details of the same

Abstract

The disclosure provides a portable terminal including an electronic device and a case disposed thereon that provides water resistant, dust resistant, and insulation for the electronic device by proper positioning of an aperture of the electronic device that uses an area of the case as an antenna. The case includes a body part that comprises a main body with a metallic portion formed of a metallic material, and an auxiliary body disposed adjacent to the metallic portion, and at least a portion of the auxiliary body is used as an antenna for transmission and reception of signals. An insulation member is disposed between the at least a portion of the auxiliary body and the main body, and a bonding layer is disposed in at least one of an area between the insulation member and at least one area of the main body, or between the insulation member and the auxiliary body.

What is claimed is: 
     
       1. A portable terminal comprising:
 a front cover disposed on a front surface of the portable terminal; 
 a rear part disposed on a rear surface of the portable terminal; 
 a side member disposed integrally with or separately from the rear part while surrounding a space defined by a distance between the front cover and the rear part; 
 a display device disposed in the space and comprising at least a screen area exposed through the front cover; 
 a communication circuit disposed in the space and electrically connected to the side member; and 
 a processor electrically connected to the communication circuit, 
 wherein the side member comprises:
 a first elongated metallic member comprising a first metal and a first metallic surface, and electrically connected to the communication circuit to function as an antenna of the communication circuit; 
 a second elongated metallic member comprising the first metal and a second metallic surface and being electrically separated from the first metallic member, wherein a gap of a specific size is interposed between the first metallic member and the second metallic member; 
 a first polymer member filling in the gap, wherein the first polymer member comprises a first surface and a second surface opposite the first surface; 
 a first organic material layer inserted between the first surface of the first polymer member and the first metallic surface of the first elongated metallic member, and configured to contact the first surface of the first polymer member and the first metallic surface of the first elongated metallic member; and 
 a second organic material layer inserted between the second surface of the first polymer member and the second metallic surface of the second metallic member and configured to contact the second surface of the first polymer member and the second metallic surface of the second metallic member, 
 
 wherein the first organic material layer and the second organic material layer comprise the same material, 
 wherein the first metallic surface of the first elongated metallic member and the second metallic surface of the second metallic member comprise recesses of at least one of repeated or random patterns, 
 wherein the first organic material layer and the second organic material layer are formed to conform to the recesses, and 
 wherein a roughness of a periphery of the first metallic surface of the first elongated metallic member is smaller than a roughness of a central portion of the first metallic surface of the first elongated metallic member. 
 
     
     
       2. The portable terminal of  claim 1 , wherein an average roughness (Ra) of the first metallic surface of the first metallic member is between 0.1 to 1.5μm, and an average roughness of the second metallic surface of the second metallic member is between 0.1 to 1.5μm. 
     
     
       3. 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. 
 
     
     
       4. The electronic device of  claim 3 , wherein the hole area comprises an area configured to receive an insertion of at least one of an ear jack, a USB, or a SIM card. 
     
     
       5. 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. 
 
     
     
       6. The case of  claim 5 , wherein at least one of the surface of the main body, which faces the insulation member, or a surface of the first auxiliary body, which faces the insulation member, comprises:
 a maximum roughness (Rz) between 0.01 to 3μm, or 
 an average roughness (Ra) between 0.01 to 1.5 μm. 
 
     
     
       7. The case of  claim 5 , wherein a roughness of a periphery of a surface of the first auxiliary body, which faces the insulation member, is different from a roughness of a central portion of the surface of the first auxiliary body. 
     
     
       8. The case of  claim 7 , wherein the roughness of the periphery of the surface of the first auxiliary body is smaller than the roughness of the central portion of the surface of the first auxiliary body. 
     
     
       9. The case of  claim 5 , wherein the insulation member comprises a polymer resin comprising at least one of poly phenylene sulfide (PPS), poly butylene terephthalate (PBT), polyimide (PI), or polycarbonate (PC). 
     
     
       10. The case of  claim 5 , wherein the insulation member is formed of a polymer resin comprising inorganic particles. 
     
     
       11. The case of  claim 5 , wherein the insulation member has a thickness of 0.5 to 2.5 mm. 
     
     
       12. The case of  claim 5 , wherein at least one of the first bonding layer and the second bonding layer comprises an organic bonding layer including at least one of triazine thiol, dibutyl amino, dithio pirymidine, or a silane-based composition. 
     
     
       13. The case of  claim 5 , wherein at least one of the first bonding layer and the second bonding layer has a thickness of 0.1 to 3μm. 
     
     
       14. The case of  claim 5 , wherein at least one of the first bonding layer and the second bonding layer is disposed in an area of a side periphery of the main body. 
     
     
       15. The case of  claim 5 , wherein at least one of the first bonding layer and the second bonding layer is disposed in a transverse end area of the first auxiliary body that is longer transversely than longitudinally. 
     
     
       16. The case of  claim 5 , wherein at least one of the first bonding layer and the second bonding layer is disposed in all parts of surfaces of the main body facing the first auxiliary body. 
     
     
       17. 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. 
 
     
     
       18. The electronic device of  claim 17 , further comprising:
 a front part disposed on a front surface of the main body; and 
 a rear part disposed on a rear surface of the main body, 
 wherein the first auxiliary body is disposed between the front part and the rear part and at least a portion of the first auxiliary body is exposed to the an outside, 
 wherein the first bonding layer is disposed between an exposed area of the main body and the insulation member, and 
 wherein the second bonding layer is disposed between an exposed area of the first auxiliary body and the insulation member. 
 
     
     
       19. 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.   
     
     
       20. The portable communication device of claim 19, wherein the insulating portion or the bonding portion forms a closed loop along a periphery part of the socket opening. 
     
     
       21. The portable communication device of claim 19, wherein a thickness of the insulating portion is between 0.5 mm and 2.5 mm. 
     
     
       22. The portable communication device of claim 19, wherein a thickness of the bonding portion is between 0.1 μm and 3 μm. 
     
     
       23. The portable communication device of claim 19, wherein the metallic material includes at least one of aluminum, magnesium, or zinc. 
     
     
       24. The portable communication device of claim 19, wherein the insulating portion includes polyphenylene sulfide or polybutylene terephthalate. 
     
     
       25. The portable communication device of claim 19, wherein the organic material includes at least one of triazine thiol, dibutyl amino, dithio pirymidine, or silane. 
     
     
       26. The portable communication device of claim 19, wherein the socket opening is formed to accommodate at least a portion of a SIM insertion member. 
     
     
       27. The portable communication device of claim 19, wherein the socket opening is ring-shaped to accommodate at least a portion of an ear jack. 
     
     
       28. The portable communication device of claim 27, wherein centers of the insulating portion, the bonding portion, and the socket opening are the same. 
     
     
       29. The portable communication device of claim 27, wherein the socket opening is disposed in a center of the insulating portion. 
     
     
       30. The portable communication device of claim 19, wherein the socket opening is formed to accommodate at least a portion of a USB connector. 
     
     
       31. The portable communication device of claim 30, wherein the insulating portion is preventing an electric shock related to the USB connector. 
     
     
       32. The portable communication device of claim 19, wherein a roughness of the metallic member forming the side exterior surface is smaller than a roughness of the metallic curved inner surface of the socket opening. 
     
     
       33. 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.   
     
     
       34. The portable communication device of claim 33, further comprising a display operatively coupled with the processor. 
     
     
       35. The portable communication device of claim 33, wherein the side portion includes:
 a third metallic portion extended from the front surface to the rear surface, the third metallic portion spaced apart from the first metallic portion by another gap extended from the front surface to the rear surface, the third metallic portion including the metallic material.   
     
     
       36. The portable communication device of claim 35, wherein the side portion includes:
 another layer disposed between the first metallic portion and the third metallic portion, wherein the other layer includes:   another insulating portion located in the other gap and extended between the front surface and the rear surface;   a third bonding portion in contact with the first metallic portion and the other insulating portion, the third bonding portion extended from the front surface to the rear surface and including the organic material and the oxide of the metallic material; and   a fourth bonding portion in contact with the other insulating portion and the third metallic portion, the fourth bonding portion extended from the front surface to the rear surface and including the organic material and the oxide of the metallic material.   
     
     
       37. The portable communication device of claim 33, wherein the side portion includes:
 a fifth bonding portion in contact with an inner surface of a socket opening formed in the first metallic portion, and the fifth bonding portion including the organic material and the oxide of the metallic material.