PHASE CHANGE MATERIAL SWITCH INCLUDING AN IONIC RESISTANCE CHANGE MATERIAL HEATING ELEMENT AND METHODS FOR FORMING THE SAME

    公开(公告)号:US20240389483A1

    公开(公告)日:2024-11-21

    申请号:US18317118

    申请日:2023-05-15

    Abstract: An embodiment phase change material (PCM) switch may include a phase change material element, a first electrode, a second electrode, and a direct heating element including an ionic resistance change material contacting the phase change material element. The phase change material element may include a phase change material that switches from an electrically conducting phase to an electrically insulating phase or from an electrically insulating phase to an electrically conducting phase by application of a heat pulse generated by the heating element. The PCM switch may further include a switching electrode contacting the ionic resistance change material such that the ionic resistance change material may be switched from a high resistance to a low resistance state by application of voltages to the first electrode, the second electrode, and the switching electrode. Electrical currents within the ionic resistance change material may generate heat that switches the phase change material element.

    Bonded wafer device structure and methods for making the same

    公开(公告)号:US11621248B2

    公开(公告)日:2023-04-04

    申请号:US17218401

    申请日:2021-03-31

    Abstract: Bonded wafer device structures, such as a wafer-on-wafer (WoW) structures, and methods of fabricating bonded wafer device structures, including an array of contact pads formed in an interconnect level of at least one wafer of the bonded wafer device structure. The array of contact pads formed in an interconnect level of at least one wafer may have an array pattern that corresponds to an array pattern of contact pads that is subsequently formed over a surface of the bonded wafer structure. The array of contact pads formed in an interconnect level of at least one wafer of the bonded wafer device structure may enable improved testing of individual wafers, including circuit probe testing, prior to the wafer being stacked and bonded to one or more additional wafers to form a bonded wafer structure.

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