Wickless capillary driven constrained vapor bubble heat pipes for application in display devices

A display system comprising:

• a plurality of display device layers to operate in combination to produce an image for a viewer;
• at least one of the plurality of display device layers including a plurality of in-built channels integrated therein;
• and
• a plurality of wickless capillary driven constrained vapor bubble heat pipes being embedded into the plurality of in-built channels of the at least one of the plurality of display device layers, the plurality of wickless capillary driven constrained vapor bubble heat pipes including a body having a capillary therein with generally square corners and a liquid partially filling the capillary to dissipate heat between an evaporator region and a condenser region.

A method comprising:

• fabricating a display device layer from a substrate;
• integrating a plurality of in-built channels into the display device layer;
• and
• embedding a plurality of wickless capillary driven constrained vapor bubble heat pipes into the plurality of in-built channels, the plurality of wickless capillary driven constrained vapor bubble heat pipes including a body having a capillary therein with generally square corners, wherein the capillary is to be partially filled with a liquid to dissipate heat between an evaporator region and a condenser region.