PRINTED HEAT SPREADER STRUCTURES AND METHODS OF PROVIDING SAME

    公开(公告)号:US20210242105A1

    公开(公告)日:2021-08-05

    申请号:US16781475

    申请日:2020-02-04

    申请人: INTEL CORPORATION

    摘要: Techniques and mechanisms for promoting heat conduction in a packaged device using a heat spreader that is fabricated by a build-up process. In an embodiment, 3D printing of a heat spreader successively deposit layers of a thermal conductor material, where said layers variously extend each over a respective one or more IC dies. The heat spreader forms a flat top side, wherein a bottom side of the heat spreader extends over, and conforms at least partially to, different respective heights of various IC dies. In another embodiment, fabrication of a portion of the heat spreader comprises printing pore structures that contribute to a relatively low thermal conductivity of said portion. An average orientation of the oblong pores contributes to different respective thermal conduction properties for various directions of heat flow.

    FIRST-LEVEL INTEGRATION OF SECOND-LEVEL THERMAL INTERFACE MATERIAL FOR INTEGRATED CIRCUIT ASSEMBLIES

    公开(公告)号:US20210225729A1

    公开(公告)日:2021-07-22

    申请号:US16746732

    申请日:2020-01-17

    申请人: Intel Corporation

    摘要: A second-level thermal interface material (TIM2) that is to couple to a system-level thermal solution is applied to an integrated circuit (IC) assembly comprising an IC die and an assembly substrate prior to the assembly substrate being joined to a host component at the system-level. Challenges associated with TIM2 application may therefore be addressed at a first level of IC die integration, simplifying subsequent assembly and better controlling thermal coupling to a subsequently applied thermal solution. Where a first-level IC assembly includes a stiffener, the TIM may be affixed to the stiffener through an adhesive bond or a fusion bond. After the IC assembly including the TIM is soldered to the host board, a thermal solution may be placed in contact with the TIM. With early application of a solder TIM, a solder TIM may be reflowed upon the IC die multiple times.