Method and system for thermomechanically decoupling heatsink

Inventors: Sri M Sri-Jayantha (Ossining, NY); Gerard McVicker, Jr. (Stormville, NY); Vijayeshwar D Khanna, Jr. (Millwood, NY)

Assignee: GLOBALFOUNDRIES INC.

B23P15/26 H01L23/36 H01L23/3675 H01L23/4093 H01L23/4338 H05K7/2039 H01L23/42 H01L2224/16225 H01L2224/32225 H01L2224/73204 H01L2224/73253 H01L2924/0002 H01L2924/15311 H01L2924/3511 Y10T29/49826

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Quick Facts

Patent No.: US 9,550,258
App. No.: 13/931,098
Granted: Jan 24, 2017
Kind: B2

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Abstract

A structure and method of mounting a heat sink having a body and mounting points configured so as to connect to a mounting medium, at least one of the mounting points being configured to allow movement in a thermally-induced expansion direction.

Claims (17)

1. A heat sink comprising:

a body; and

mounting points configured so as to connect to a mounting medium,

wherein at least one of the mounting points is configured to allow movement in a thermally-induced expansion direction,

wherein the mounting points include a mounting portion of the body and a mounting member configured to connect the mounting portion to the mounting medium,

wherein the mounting member comprises a shaft including a non-cylindrical flexing portion between two cylindrical portions, and

wherein the non-cylindrical flexing portion includes a plurality of flexing parts and a dampening material disposed on at least one of the plurality of flexing parts.

2. A heat sink according to claim 1 , wherein the flexing portion is oriented such that a stiffness in a direction oriented along the thermally-induced expansion direction at the mounting member is less than a stiffness along an other direction at the mounting member.

3. A heat sink according to claim 1 , wherein the non-cylindrical flexing portion includes a rectangular portion of the mounting member.

4. A heat sink according to claim 1 , wherein the non-cylindrical flexing portion includes two flexing parts, the flexing parts comprising a material different from a material of the two cylinder portions.

5. A heat sink comprising:

a body; and

mounting points configured so as to connect to a mounting medium,

wherein at least one of the mounting points is configured to allow movement in a thermally-induced expansion direction,

wherein the mounting points include a mounting portion of the body and a mounting member configured to connect the mounting portion to the mounting medium,

wherein the mounting member comprises a shaft including a non-cylindrical flexing portion between two cylindrical portions, and

wherein the non-cylindrical flexing portion includes two flexing parts, the flexing parts comprising a material different from a material of the two cylinder portions.

Assignments (6)

RELEASE OF SECURITY INTEREST Recorded May 12, 2021

From: WILMINGTON TRUST, NATIONAL ASSOCIATION

To: GLOBALFOUNDRIES U.S. INC.

Reel/Frame 056987/0001 →

RELEASE OF SECURITY INTEREST Recorded Nov 20, 2020

From: WILMINGTON TRUST, NATIONAL ASSOCIATION

To: GLOBALFOUNDRIES INC.

Reel/Frame 054636/0001 →

SECURITY AGREEMENT Recorded Nov 29, 2018

From: GLOBALFOUNDRIES INC.

To: WILMINGTON TRUST, NATIONAL ASSOCIATION