Mobile terminal

Abstract

A mobile terminal includes: an upper plate; and a lower plate having a size corresponding to that of the upper plate and having at least a portion spaced apart from the upper plate to form a passage to allow fluid to flow therein, wherein the upper plate and the lower plate form a vapor chamber, at least one of the upper plate and the lower plate is formed by bonding dissimilar-metals, and the passage includes an absorption layer in which a working fluid moves and a vapor channel formed on the absorption layer and allowing vapor evaporated from the absorption layer to move therein, and a fluidic channel in which the working fluid moves is formed within the absorption layer.

1 . A mobile terminal comprising:
 a front case;   a rear case covering the opposite surface of the front case; and   a frame supporting an electrical element formed between the front case and the rear case,   wherein the frame comprises:   an upper plate; and   a lower plate having a size corresponding to that of the upper plate and having at least a portion spaced apart from the upper plate to form a passage to allow fluid to flow therein,   wherein the upper plate and the lower plate form a vapor chamber, at least one of the upper plate and the lower plate is formed by bonding dissimilar metals, and the passage includes an absorption layer in which a working fluid moves and a vapor channel formed on the absorption layer and allowing vapor evaporated from the absorption layer to move therein, and a fluidic channel in which the working fluid moves is formed within the absorption layer.   
     
     
         2 . The mobile terminal of  claim 1 , wherein the absorption layer is formed of a porous material. 
     
     
         3 . The mobile terminal of  claim 2 , wherein a first metal among the dissimilar metals is stainless steel. 
     
     
         4 . The mobile terminal of  claim 3 , wherein a second metal among the dissimilar metals is one or more selected from the group consisting of copper, aluminum, an aluminum alloy, nickel, a nickel alloy, titanium, and magnesium. 
     
     
         5 . The mobile terminal of  claim 4 , wherein the first metal forms an appearance of the vapor chamber, and the second metal is formed within the vapor chamber. 
     
     
         6 . The mobile terminal of  claim 4 , wherein the second metal has two or more layers formed by combining two or more selected from the group consisting of copper, aluminum, an aluminum alloy, nickel, a nickel alloy, titanium, and magnesium. 
     
     
         7 . The mobile terminal of  claim 6 , wherein the upper plate has a convex portion and a concave portion to form the passage. 
     
     
         8 . The mobile terminal of  claim 1 , wherein the upper plate and the lower plate are bonded by welding or diffusion bonding. 
     
     
         9 . The mobile terminal of  claim 7 , wherein a heat dissipation element is coupled to the concave portion. 
     
     
         10 . The mobile terminal of  claim 1 , wherein the lower plate has a flat plate shape. 
     
     
         11 . The mobile terminal of  claim 2 , wherein the absorption layer comprises:
 a first layer formed by growing grains and   a second layer formed on the first layer and including a plurality of acicular particles.   
     
     
         12 . The mobile terminal of  claim 1 , wherein the vapor chamber is coupled to the rear case or the front case.