Mobile terminal and chargeable communication module

Abstract

A mobile terminal is provided with a housing, a circuit board included in the housing and having a thickness direction normal to a plane of the circuit board, a battery pack included in the housing, and a non-contact charging module included in the housing. The non-contact charging module includes a charging coil formed of a wound conducting wire; a communication coil arranged adjacent to the charging coil; and a magnetic sheet on which the charging coil and the communication coil are arranged. The magnetic sheet has four edges that collectively define a rectangular profile of the magnetic sheet, and at most three pairs of adjacent edges respectively meet to form at most three corners. At least a portion of the non-contact charging module overlaps with the circuit board as viewed in the thickness direction of the circuit board.

What is claimed is: 
     
         1 . 1. A mobile terminal, comprising:
 a housing having a circuit board, a battery, a charging coil and a sheet included therein, the charging coil including a winding portion and two leg portions, and the sheet including four edges and four corner portions;   wherein a first one of said corner portions has a corresponding first virtual comer;   wherein said first virtual corner is formed by a pair of adjacent edges of the sheet that do not meet each other and do not form a corner; and   wherein the first one of said corner portions is receded inwardly from said first virtual corner by a first receding distance.   
     
     
         2 . The mobile terminal of  claim 1 , wherein one or more of the corner portions of the sheet other than the first one of said corner portions each has a corresponding respective virtual corner. 
     
     
         3 . The mobile terminal of  claim 2 , wherein said one or more of the corner portions of the sheet other than the first one of said corner portions are each receded inwardly from their corresponding respective virtual corner by a respective receding distance. 
     
     
         4 . The mobile terminal of  claim 3 , wherein the first receding distance is greater than the respective receding distances of said one or more of the corner portions of the sheet other than the first one of said corner portions. 
     
     
         5 . The mobile terminal of  claim 3 , wherein the first receding distance is different than the respective receding distances of said one or more of the corner portions of the sheet other than the first one of said corner portions. 
     
     
         6 . The mobile terminal of  claim 1 , wherein the sheet is a magnetic sheet. 
     
     
         7 . The mobile terminal of  claim 6 , wherein one or more of the corner portions of the sheet other than the first one of said corner portions each has a corresponding respective virtual corner. 
     
     
         8 . The mobile terminal of  claim 7 , wherein said one or more of the corner portions of the sheet other than the first one of said corner portions are each receded inwardly from their corresponding respective virtual corner by a respective receding distance. 
     
     
         9 . The mobile terminal of  claim 8 , wherein the first receding distance is greater than the respective receding distances of said one or more of the corner portions of the sheet other than the first one of said corner portions. 
     
     
         10 . The mobile terminal of  claim 8 , wherein the first receding distance is different than the respective receding distances of said one or more of the corner portions of the sheet other than the first one of said corner portions. 
     
     
         11 . The mobile terminal of  claim 1 , wherein the charging coil is formed in one of: a circular chape, an oval shape, and a rectangular shape. 
     
     
         12 . The mobile terminal of  claim 11 , wherein the housing has a substantially rectangular shape in a plan view of the housing. 
     
     
         13 . The mobile terminal of  claim 1 , wherein the housing further includes a near field communication (NFC) coil arranged adjacent to the charging coil on the sheet. 
     
     
         14 . The mobile terminal of  claim 1 , wherein the housing further includes a communication coil having a conducting wire pattern-printed on a substrate. 
     
     
         15 . The mobile terminal of  claim 1 , wherein the circuit board has a thickness direction orthogonal to a plane of the circuit board, and the charging coil is included in a charging module that overlaps with the circuit board as viewed in the thickness direction of the circuit board. 
     
     
         16 . The mobile terminal of  claim 15 , wherein the housing further includes a communication coil. 
     
     
         17 . The mobile terminal of  claim 16 , wherein one or more of the corner portions of the sheet other than the first one of said corner portions each has a corresponding respective virtual corner. 
     
     
         18 . The mobile terminal of  claim 17 , wherein said one or more of the corner portions of the sheet other than the first one of said corner portions are each receded inwardly from their corresponding respective virtual corner by a respective receding distance. 
     
     
         19 . The mobile terminal of  claim 18 , wherein the first receding distance is greater than the respective receding distances of said one or more of the corner portions of the sheet other than the first one of said corner portions. 
     
     
         20 . The mobile terminal of  claim 18 , wherein the first receding distance is different than the respective receding distances of said one or more of the corner portions of the sheet other than the first one of said corner portions. 
     
     
         21 . A mobile terminal, comprising a housing having a circuit board, a battery, a charging coil and a sheet included therein, the charging coil including a winding portion and two leg portions and the sheet including a number of corner portions corresponding to respective virtual corners, said corner portions including a first corner portion having a corresponding first virtual corner formed by a pair of adjacent edges of the sheet that do not form a corner, wherein said first corner portion of the sheet is receded inwardly from said first virtual corner by a first receding distance. 
     
     
         22 . The mobile terminal of  claim 21 , wherein one or more of the corner portions of the sheet other than said first corner portion are each receded inwardly from their corresponding respective virtual corner by a respective receding distance. 
     
     
         23 . The mobile terminal of  claim 21 , wherein the first receding distance is greater than the respective receding distances of said one or more of the corner portions of the sheet other than the first one of said corner portions. 
     
     
         24 . The mobile terminal of  claim 21 , wherein the first receding distance is different than the respective receding distances of said one or more of the corner portions of the sheet other than the first one of said corner portions. 
     
     
         25 . The mobile terminal of  claim 21 , wherein the sheet is a magnetic sheet. 
     
     
         26 . The mobile terminal of  claim 25 , wherein one or more of the corner portions of the sheet other than said first corner portion are each receded inwardly from their corresponding respective virtual corner by a respective receding distance. 
     
     
         27 . The mobile terminal of  claim 26 , wherein the first receding distance is greater than the respective receding distances of said one or more of the corner portions of the sheet other than the first one of said corner portions. 
     
     
         28 . The mobile terminal of  claim 26 , wherein the first receding distance is different than the respective receding distances of said one or more of the corner portions of the sheet other than the first one of said corner portions.