Vapor chamber for dissipation heat generated by electronic component

• US 7,447,029 B2
• Filed: 03/14/2006
• Issued: 11/04/2008
• Est. Priority Date: 03/14/2006
• Status: Expired due to Fees

• Current Assignee: Foxconn Technology Co., Ltd., Fuzhun Precision Industry Company Limited (Foxconn Technology Co., Ltd.)
• Original Assignee: Foxconn Technology Co., Ltd., Fuzhun Precision Industry Company Limited (Foxconn Technology Co., Ltd.)
• Inventors: Lai, Cheng-Tien, Ding, Qiao-Li, Zhou, Zhi-Yong
• Primary Examiner(s): Gandhi; Jayprakash N
• Assistant Examiner(s): Smith; Courtney L
• Application Number:
  US11/308,231
• Publication Number:
  US 20070217154A1
• Time in Patent Office: 966 Days
• Field of Search: 361/699, 361/700, 165/104.26, 165/104.33, 165/104.21, 165/185, 174/15.2, 257/E23.088, 257/E23.099, 257712-715
• US Class Current: 361/700
• CPC Class Codes: H01L 23/427 Cooling by change of state, e.g. use of heat pipes by liquefied gas H01L23/445
• CPC Class Codes: H01L 2924/00 Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
• CPC Class Codes: H01L 2924/0002 Not covered by any one of groups H01L24/00, H01L24/00 and H01L2224/00

Abstract

A vapor chamber includes a base (100) for contacting a heat-generating component (500), a cover (200), a first porous capillary sheet (300) located in the base and a second porous capillary sheet (400) located in the cover and facing the first porous capillary sheet. The base comprises a block (130) extending from the base to thermally connect with the cover. The cover is mounted on the base and forms a hermetically sealed container together with the base. The first and second porous capillary sheets together form an enclosure and are contained in the container, and the block extends through the first and second porous capillary sheets and engage therewith.

Claims

1. A vapor chamber comprising:

a container having a base for contacting a heat-generating component, the container comprising a block located therein, the block thermally connecting the base and a cover of the container;

a porous capillary enclosure contained within the container, the enclosure comprising a through hole defined therethough for accommodating the block; and

a liquid contained in the container, wherein the porous capillary enclosure keeps an inner surface of the container and an outer surface of the block wet; and

wherein an opening is defined through the cover and the block is received in the through hole of the enclosure and the opening of the cover, and wherein an upper surface of the block and an upper surface of the container are positioned in a same plane.

2. The vapor chamber as claimed in claim 1, wherein a plurality of ribs is located in the enclosure and divides the enclosure into several enclosed spaces.