Vapor chamber

Abstract

A vapor chamber having a first plate, a second plate and a brazing structure is provided. The first plate has an outer surface and an inner surface. A periphery of the first plate has a sealing edge extending outwardly; a level difference exists between the first plate and the sealing edge. Multiple supporting portions are formed on the inner surface of the first plate. The second plate also has an outer surface and an inner surface spaced apart from the inner surface of the first plate, and the second plate covers the first plate to enclose a chamber. The brazing structure has a sealing portion and a plurality of connecting portions, the sealing portion is fixed between the second plate and the sealing edges of the first plate, and the connecting portions are respectively disposed between the corresponding supporting portions of the first plate and of the second plate.

What is claimed is: 
     
         1 . A vapor chamber, comprising:
 a first plate having an outer surface, an inner surface, a sealing edge extending outwardly at a periphery of the first plate, a level difference being formed between the first plate and the sealing edge, and a plurality of first supporting portions being formed on the inner surface of the first plate;   a second plate having an outer surface and an inner surface, the inner surface of the second plate being spaced apart from the inner surface of the first plate, and the second plate covering the first plate to define a chamber, and a plurality of second supporting portions being formed on the inner surface of the second plate; and   a brazing structure having a sealing portion and a plurality of connecting portions, the sealing portion being fixed between the second plate and the sealing edge of the first plate, and the connecting portions being respectively disposed between the first supporting portions of the first plate and the second supporting portions of the second plate.   
     
     
         2 . The vapor chamber according to  claim 1 , wherein the vapor chamber has a thickness ranged from 0.1 to 0.8 mm. 
     
     
         3 . The vapor chamber according to  claim 1 , wherein the first plate and second plate are respectively made of copper, titanium, or stainless steel. 
     
     
         4 . The vapor chamber according to  claim 1 , wherein the first plate and the second plate have a thickness ranged from 0.02 to 0.2 mm. 
     
     
         5 . The vapor chamber according to  claim 1 , further comprising a capillary layer disposed on the inner surface of the first plate. 
     
     
         6 . The vapor chamber according to  claim 5 , wherein a plurality of through holes are defined on the capillary layer corresponding to the first supporting portions of the first plate, the first supporting portions are inserted though the respective through holes, and the capillary layer is thereby attached on the inner surface of the first plate. 
     
     
         7 . The vapor chamber according to  claim 6 , wherein a plurality of reliefs is formed on the inner surface of the second plate by etching and at least one steam channel is enclosed by the reliefs. 
     
     
         8 . The vapor chamber according to  claim 1 , wherein the first supporting portions of the first plate and the second supporting portions of the second plate are cylindrical, square or rectangular columns. 
     
     
         9 . The vapor chamber according to  claim 1 , wherein the first supporting portions of the first plate and the second supporting portions of the second plate have same contour. 
     
     
         10 . The vapor chamber according to  claim 1 , wherein the first supporting portions of the first plate are staggered or the second supporting portions of the second plate are staggered. 
     
     
         11 . The vapor chamber according to  claim 1 , wherein at least one spilling groove is recessed into the first supporting portions of the first plate or the second supporting portions of the second plate. 
     
     
         12 . The vapor chamber according to  claim 11 , wherein the at least one spilling groove has a cross section of a rectangular shape, a square shape, a curve shape, a V shape or an inverted V shape. 
     
     
         13 . The vapor chamber according to  claim 1 , wherein a plurality of spilling grooves is recessed into the first supporting portions of the first plate and the second supporting portions of the second plate. 
     
     
         14 . The vapor chamber according to  claim 13 , wherein each spilling groove has a cross section of a rectangular shape, a square shape, a curve shape, a V shape or an inverted V shape. 
     
     
         15 . The vapor chamber according to  claim 1 , wherein the sealing portion and the connecting portions are identical in thickness.