Non-flat vapor chamber with stiffening plate

Abstract

A non-flat vapor chamber includes a casing, a capillary tissue, a stiffening plate, a support structure and a working fluid. The casing includes a lower case plate and an upper case plate sealed with the lower case plate. The lower case plate has a partial area protruded downward to form a chamber and a retaining portion formed within the chamber. A capillary tissue is installed on internal walls of the upper and lower case plates. The stiffening plate with a through hole is installed onto the retaining portion, and the casing contains a support structure. Upper and lower ends of the support structure abut the capillary tissue and the stiffening plate. A working fluid is filled into the casing, such that a support action is provided by pressing the stiffening plate at the retaining portion for stiffening the upper case plate of a vacuumed vapor chamber.

1 . A non-flat vapor chamber comprising:
 a casing, including a lower case plate and an upper case plate sealed with the lower case plate, and partial area of the lower case plate being protruded downward to form a chamber therein, and a retaining portion being formed around the chamber;   a capillary tissue, disposed on internal walls of the upper and lower case plates;   a stiffening plate, disposed on the retaining portion, and having a plurality of through holes;   a support structure, contained in the casing, and having upper and lower ends coupled to the capillary tissue and the stiffening plate respectively; and   a working fluid, filled into the casing.   
     
     
         2 . The non-flat vapor chamber of  claim 1 , wherein the retaining portion is formed at the lower case plate and disposed separately at a plurality of corner plates at corners of the chamber. 
     
     
         3 . The non-flat vapor chamber of  claim 1 , wherein the retaining portion is formed on a surrounding wall of the lower case plate. 
     
     
         4 . The non-flat vapor chamber of  claim 1 , wherein the retaining portion and the lower case plate have internal surfaces constituting a height difference, such that a distal surface of the stiffening plate is aligned evenly with the internal surface of the lower case plate. 
     
     
         5 . The non-flat vapor chamber of  claim 1 , wherein the through hole is in a rectangular-bar shape. 
     
     
         6 . The non-flat vapor chamber of  claim 1 , wherein the through hole is in a circular shape. 
     
     
         7 . The non-flat vapor chamber of  claim 1 , wherein the stiffening plate is substantially in a rectangular shape, having a protruding edge extended from the corners of the stiffening plate, such that a gap is formed between a lateral side of the stiffening plate and the internal wall of the lower case plate. 
     
     
         8 . The non-flat vapor chamber of  claim 1 , further comprising a filling and degassing tube, and the upper and lower case plates having a notch each, and the notches constituting an orifice for passing the filling and degassing tube.