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 1.5 μm, and an average roughness of the second metallic surface of the second metallic member is between 0.1 to 1.5 μm. 
     
     
       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, and   the organic material layer is formed to conform to the recesses, and   wherein a roughness of an area of the outside of an inner wall of the hole area is smaller than a roughness of an area of the 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 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 a 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 3 μm, 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 9 , 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 3 μm. 
     
     
       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. An 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 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 electronic device, comprising:
 a front cover;   a rear cover;   a side portion forming a side surface of the portable electronic device;   a display visually exposed through the front cover;   a communication circuit configured to communicate with an external electronic device; and   a processor operatively coupled with the display and the communication circuit;   wherein the side portion includes:
 a hole area forming a through-hole passing through the side portion; the through-hole having a metallic curved inner surface; 
 a first bonding layer disposed over the metallic curved inner surface, the first bonding layer including an organic material and an oxidation layer of a material of the metallic curved inner surface; and 
 a first insulation member disposed over the first bonding layer such that a substantial portion of the hole area remains open, 
   wherein the side portion further includes:
 a first metallic portion composed of a metallic material and forming a part of the side surface and electrically connected with the communication circuit to be used as an antenna; 
 a second metallic portion composed of the metallic material and forming another part of the side surface and spaced apart from the first metallic portion by a first gap extended in substantially entire height of the side portion between a front surface and a rear surface; 
 a second insulation member disposed between the first metallic portion and the second metallic portion located in the first gap as extended between the front surface and the rear surface; and 
   wherein the first insulation member and the second insulation member are formed as part of a same insulation member.   
     
     
       20. The portable electronic device of  claim 19 , wherein the second insulation member is attached to the first metallic portion via a second bonding layer, and to the second metallic portion via a third bonding layer. 
     
     
       21. The portable electronic device of  claim 20 , wherein each of the second bonding layer and the third bonding layer includes the organic material and the oxidation layer of the metallic material. 
     
     
       22. The portable electronic device of  claim 19 , wherein the hole area and the second insulation member are formed on a same side of the side portion. 
     
     
       23. The portable electronic device of  claim 19 , wherein the side portion comprises a first side portion formed of a metallic material that forms at least a portion of a side exterior surface of the portable electronic device and a second side portion formed of a metallic material that forms at least a portion of another side exterior surface of the portable electronic device, and
 wherein the hole area is formed on the first side portion and the second insulation member is formed on the second side portion of the side portion.   
     
     
       24. The portable electronic device of  claim 19 , wherein the side portion further comprises:
 a third metallic portion extended from the front surface to the rear surface, the third metallic portion spaced apart from the second metallic portion by a second gap extended from the front surface to the rear surface, the third metallic portion including the metallic material, and   a third insulation member disposed between the second metallic portion and the third metallic portion.   
     
     
       25. The portable electronic device of  claim 24 , wherein the third insulation member is formed as part of a same insulation member of the first insulation member. 
     
     
       26. The portable electronic device of  claim 24 , wherein the third insulation member is formed as part of a same insulation member of the second insulation member. 
     
     
       27. The portable electronic device of  claim 24 , wherein the side portion comprises a first side portion formed of a metallic material that forms at least a portion of a side exterior surface of the portable electronic device and a second side portion formed of a metallic material that forms at least a portion of another side exterior surface of the portable electronic device, a third side portion and a fourth side portion between the first side portion and the second side portion, and
 wherein the hole area, the second insulation member, and the third insulation member are formed on the first side portion.   
     
     
       28. The portable electronic device of  claim 26 , wherein the hole area is disposed between the second insulation member and the third insulation member. 
     
     
       29. The portable electronic device of  claim 19 , wherein the first insulation member forms a closed loop along a periphery part of the through-hole. 
     
     
       30. The portable electronic device of  claim 19 , wherein a thickness of the first insulation member is between 0.5 mm and 2.5 mm. 
     
     
       31. The portable electronic device of  claim 19 , wherein a thickness of the first bonding layer is between 0.1 μm and 3 μm. 
     
     
       32. The portable electronic device of  claim 19 , wherein the metallic material includes at least one of aluminum or an aluminum-magnesium or aluminum-zinc-magnesium alloy. 
     
     
       33. The portable electronic device of  claim 19 , wherein the organic material includes at least one of triazine thiol, dibutyl amino, dithio pirymidine, or a silane-based composition. 
     
     
       34. The portable electronic device  of preceding claim 19 , wherein the through-hole is formed to accommodate at least a portion of a USB connector. 
     
     
       35. The portable electronic device of  claim 19 , wherein a roughness of the metallic curved inner surface is smaller than a roughness of an area of the side portion that is covered by the display. 
     
     
       36. The portable electronic device of  claim 19 , wherein a roughness of a portion of the side portion that is covered by the front cover is different from a roughness of a portion of the side portion that is exposed. 
     
     
       37. The portable electronic device of  claim 19 , wherein a roughness of a periphery of a surface of the side portion, which faces the first insulation member, is different from a roughness of a central portion of a surface of the side portion, which faces the first insulation member. 
     
     
       38. The portable electronic device of  claim 37 , wherein the roughness of the periphery of the surface of the side portion is smaller than the roughness of the central portion of the surface of the side portion.