Thin, planar heat spreader
AssigneeNovel Concepts, Inc.
InventorDaniel Lee Thomas
Life of this patent
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Abstract
A heat spreading apparatus includes a first planar body for attachment to a heat generating surface which results in a hot region and a cool region on the first planar body. A second planar body connected to the first planar body is used to define a void between the first planar body and the second planar body. The void includes a planar capillary path and a non-capillary region. A fluid positioned within the void distributes heat by vaporizing the fluid from the planar capillary path in the hot region, condensing the fluid in the non-capillary region in the cool region, and moving from the non-capillary region to the planar capillary path in the hot region through capillarity.
Claims34
A heat spreading apparatus, comprising:
- a first planar body for attachment to a heat generating surface which produces a hot region and a cool region on said first planar body;
- a second planar body connected to said first planar body to define a void between said first planar body and said second planar body, said void including a non-capillary region with a first vertical height to facilitate vapor transport and a planar capillary region with a second vertical height, less than said first vertical height to facilitate capillary fluid motion, said planar capillary region having a substantially rectangular cross-section;
- and
- a fluid positioned within said void for distributing heat by vaporizing said fluid from said planar capillary region in said hot region, condensing said fluid in said non-capillary region in said cool region, and moving from said non-capillary region to said planar capillary region in said hot region through capillarity.
The apparatus of 11 wherein said plurality of non-capillary regions have varying sizes.
A heat spreading apparatus, comprising:
- a first body portion;
- and
- a second body portion connected to said first body portion to define a void between said first body portion and said second body portion, said void including a planar capillary region with a substantially rectangular cross-section defined by said first planar body and said second planar body, said planar capillary region adapted to transport a condensed fluid from a cool region of said void to a hot region of said void where said fluid is evaporated.
Dependencies are inferred from the claim text.