公开(公告)号：GB2605325A

公开(公告)日：2022-09-28

申请号：GB202208666

申请日：2020-11-20

Applicant: IBM

Inventor： NING LI ,  JOEL DE SOUZA ,  STEPHEN BEDELL ,  DEVENDRA SADANA

IPC: H01L45/00

Abstract: A bottom electrode(110) is deposited on top of a substrate(105). A dielectric material layer(115) is deposited on top of the bottom electrode(110). A hole is created in the dielectric material layer(115). A lift off layer(116) is spun on and baked on the dielectric material layer(115). A photoresist layer(117) is spun on and baked on the lift off layer(116). UV lithography is performed to create an opening above the hole in the dielectric material layer(115). An Ag layer(120) is deposited on top of the remaining patterned dielectric material layer and the photoresist layer(117). A Germanium Antimony Telluride (GST) layer(130) is deposited on top of the Ag layer(120). A top electrode(140) is deposited on top of the GST layer(130). The Ag layer(120), the GST layer(130) and the top electrode(140) located on top of the photoresist layer(117) along with the photoresist layer(117) and the lift off layer(116) are removed.

公开(公告)号：GB2608320A

公开(公告)日：2022-12-28

申请号：GB202213458

申请日：2021-02-17

Applicant: IBM

Inventor： NING LI ,  WANKI KIM ,  STEPHEN BEDELL ,  DEVENDRA SADANA

IPC: G11C11/00 ,  G11C7/00

Abstract: An apparatus includes an analog phase change memory array, including an array of cells addressable and accessible through first lines and second lines. The apparatus includes device(s) coupled to one or more of the first lines. The device(s) is/are able to be coupled to or decoupled from the one or more first lines to compensate for phase change memory resistance drift in resistance of at least one of the cells in the one or more first lines. The apparatus may also include control circuitry configured to send, using the first lines and second lines, a same set pulse through the device(s) to multiple individual phase change memory resistors in the phase change memory array sequentially once every period.

公开(公告)号：GB2599329A

公开(公告)日：2022-03-30

申请号：GB202200313

申请日：2020-06-15

Applicant: IBM

Inventor： STEVEN HOLMES ,  DEVENDRA SADANA ,  STEPHEN BEDELL

IPC: A61B5/00

Abstract: A method includes implanting an implantable biosensor within a subject where the implantable biosensor has an array of light sources and an array of light detectors, activating the array of light sources to direct light signals at a targeted tissue site in the subject, capturing, with the light detectors, the light signals reflected off the targeted site, calculating a roundtrip propagation time for each of the light signals and comparing the roundtrip propagation time for each of the light signals against previous calculated respective roundtrip propagation times to determine an occurrence of a change in the targeted tissue site.