Flat heat pipe structure

A heat dissipation device, comprising:

• a first plate;
• a second plate contacting the first plate, and at least partially defining a heat exchange chamber therebetween;
• and
• a mesh disposed in the heat exchange chamber, wherein
• each of the first plate and the second plate include a first arm, a second arm, and a third arm, and a curved portion that is centrally located between the first arm, the second arm, and the third arm, the first arm, the second arm, and the third arm being circumferentially separated from each other and each connected to the curved portion,
• the second plate includes a first plurality of columns arranged in the first arm, a second plurality of columns arranged in the second arm, a third plurality of columns arranged in the third arm, and a plurality of ridges arranged in the curved portion,
• a first ridge of the plurality of ridges includes a first arm, a second arm, and a third arm corresponding to the first arm, second arm, and third arm of the second plate,
• the plurality of ridges further includes second, third and fourth ridges and the first ridge is arranged between the second, third and fourth ridges,
• the first plurality of columns, the second plurality of columns, the third plurality of columns, and the plurality of ridges are disposed in the heat exchange chamber,
• both the first plate and the second plate including the respective curved portions are located in or are parallel to a single plane,
• the plurality of ridges are included only in the curved portion of the second plate.