Heat pipe with ultra-thin flat wick structure

A heat pipe with an ultra-thin flat wick structure (2), comprising:

• a hollow shell (1) having a flat shape;
• and
• a wick structure (2) disposed in the shell (1), the wick structure (2) comprising a plurality of heat exchange zones (20) and at least one liquid channel (21) connected between the heat exchange zones (20) divided into at least one evaporation portion and at least one condensation portion,
• wherein each of the heat exchange zones (20) has a plane (200) and a pressing surface (201) opposite to the plane (200), wherein the plane (200) is attached to an inner wall (110) of the shell (1), wherein a plurality of elongated concave surfaces (202) are spacedly arranged on the pressing surface (201) such that a respective steam channel (101) is formed in the shell (1) via each of the concave surfaces (202) and a respective elongated wick structure connection (203) is formed between each concave surface (202) and the plane (200), wherein cut-out zones (102) are formed at two sides of the liquid channel (21) between the heat exchange zones (20) in the shell (1).