THE FLAT PLATE TYPE MICRO HEAT SPREADING DEVICE

摘要

A flat type thermal spreading device is provided to prevent a reverse flow of a steam bubble by two-step capillary tube structure of a bottom plate. A flat type thermal spreading device includes a bottom plate(300), a central plate(200), and a top plate(100). The bottom plate gasifies liquid. The central plate is coupled in a top surface of the bottom plate. The central plate has a path for a gasified steam and a path for a condensed fluid. The top plate is coupled in a top surface of the central plate. The top plate condenses the gasified steam. The bottom plate has a multi channel capillary tube structure. The multi channel capillary tube structure comprises a plurality of grooves. The multi channel capillary tube structure has one or more step-height.