公开(公告)号：US11480609B2

公开(公告)日：2022-10-25

申请号：US17069930

申请日：2020-10-14

Applicant: Ohio State Innovation Foundation

Inventor： Waleed Khalil ,  Michael Charles Kines

IPC: G01R31/28

Abstract: Systems and methods are provided for Integrated Circuit (IC) identification, authentication, and tamper detection. Die identification, authentication, and tamper detection techniques are described that employ capacitive sensing of on-chip interconnect. The signal and power routing in ICs have nominal capacitance values that are characteristic of their foundry, and the variance of these values, due to process tolerances, is unique to each device. Measuring these capacitances provides not only support for determining the authenticity of the device and fabrication site, but also provides distinct identification of each part. By integrating Capacitance-to-Digital Converters (CDCs) with low power and area overhead, capacitance values from intrinsic functional nets can be reported, and the need for separate additive test circuitry can be avoided.

公开(公告)号：US20210375957A1

公开(公告)日：2021-12-02

申请号：US16769693

申请日：2018-12-05

Applicant: OHIO STATE INNOVATION FOUNDATION

Inventor： Sanjay Krishna ,  Earl Fuller ,  Waleed Khalil ,  Theodore RONNINGEN ,  Alireza Kazemi ,  Dale Shane Smith ,  Teressa Specht ,  Ramy Tantawy

IPC: H01L27/142 ,  H01L27/146 ,  H01L31/103 ,  H01L31/108 ,  H03K17/785

Abstract: An open circuit voltage photodetector comprises a photovoltaic device including a photovoltaic junction, and a transistor. The photovoltaic device is connected to the gate terminal of the transistor to input an open circuit voltage of the photovoltaic device to the gate terminal. An array of such photodetectors and a readout integrated circuit forms an image sensor. In a photodetection method, an open circuit voltage is generated in a photovoltaic device in response to illumination by incident radiation, and the open circuit voltage is applied to a gate terminal of a transistor to modulate a channel current flowing in a channel of the transistor. A readout electronic circuit may be fabricated with an extra transistor, and a photovoltaic device disposed on the readout electronic circuit and electrically connected to apply an open circuit voltage of the photovoltaic device to a gate of the extra transistor.

公开(公告)号：US20210110073A1

公开(公告)日：2021-04-15

申请号：US17069930

申请日：2020-10-14

Applicant: Ohio State Innovation Foundation

Inventor： Waleed Khalil ,  Michael Charles Kines

IPC: G06F21/86

Abstract: Systems and methods are provided for Integrated Circuit (IC) identification, authentication, and tamper detection. Die identification, authentication, and tamper detection techniques are described that employ capacitive sensing of on-chip interconnect. The signal and power routing in ICs have nominal capacitance values that are characteristic of their foundry, and the variance of these values, due to process tolerances, is unique to each device. Measuring these capacitances provides not only support for determining the authenticity of the device and fabrication site, but also provides distinct identification of each part. By integrating Capacitance-to-Digital Converters (CDCs) with low power and area overhead, capacitance values from intrinsic functional nets can be reported, and the need for separate additive test circuitry can be avoided.

公开(公告)号：US11521994B2

公开(公告)日：2022-12-06

申请号：US16769693

申请日：2018-12-05

Applicant: OHIO STATE INNOVATION FOUNDATION

Inventor： Sanjay Krishna ,  Earl Fuller ,  Waleed Khalil ,  Theodore Ronningen ,  Alireza Kazemi ,  Dale Shane Smith ,  Teressa Specht ,  Ramy Tantawy

IPC: H01L27/146 ,  H01L27/142 ,  H01L31/103 ,  H01L31/108 ,  H03K17/785

Abstract: An open circuit voltage photodetector comprises a photovoltaic device including a photovoltaic junction, and a transistor. The photovoltaic device is connected to the gate terminal of the transistor to input an open circuit voltage of the photovoltaic device to the gate terminal. An array of such photodetectors and a readout integrated circuit forms an image sensor. In a photodetection method, an open circuit voltage is generated in a photovoltaic device in response to illumination by incident radiation, and the open circuit voltage is applied to a gate terminal of a transistor to modulate a channel current flowing in a channel of the transistor. A readout electronic circuit may be fabricated with an extra transistor, and a photovoltaic device disposed on the readout electronic circuit and electrically connected to apply an open circuit voltage of the photovoltaic device to a gate of the extra transistor.