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公开(公告)号：US10830913B2
公开(公告)日：2020-11-10
申请号：US15737787
申请日：2015-10-14
发明人： Peiyan Cao , Yurun Liu
摘要： An apparatus suitable for detecting X-ray is disclosed. In one example, the apparatus comprises an X-ray absorption layer comprising a pixel and a second pixel, and a layer of material or vacuum extending across a thickness of the X-ray absorption layer and encircling the pixel, wherein the layer of material is configured to prevent a charge carrier in the pixel from moving through the layer of material. In another example, the apparatus comprises an X-ray absorption layer comprising a plurality of columns of a semiconductor configured to absorb X-ray, and a layer of material or vacuum extending across a thickness of the X-ray absorption layer and encircling each of the columns, wherein the layer of material is configured to prevent transfer of a charge carrier between two of the columns.
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公开(公告)号：US10705031B2
公开(公告)日：2020-07-07
申请号：US15309328
申请日：2015-08-27
发明人： Peiyan Cao , Yurun Liu
IPC分类号： G01N23/046 , A61B6/00 , G01T1/36
摘要： The present teaching relates to methods, systems, and apparatus for X-ray imaging with a detector capable of resolving photon energy. In one example, an X-ray microscope is disclosed. The X-ray microscope comprises an X-ray source and a detector. The X-ray source is configured for irradiating X-ray to a sample. The detector is configured for: detecting X-ray photons from the irradiated X-ray, determining energy of each of the detected X-ray photons, and generating an image of the sample based on detected X-ray photons that have energies in a predetermined range.
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公开(公告)号：US10007009B2
公开(公告)日：2018-06-26
申请号：US15122456
申请日：2015-04-07
发明人： Peiyan Cao , Yurun Liu
CPC分类号： G01T1/247 , A61B6/032 , G01V5/0025 , G21K7/00
摘要： Disclosed herein is an apparatus suitable for detecting x-ray, comprising: an X-ray absorption layer comprising an electrode; an electronics layer, the electronics layer comprising: a substrate having a first surface and a second surface, an electronics system in or on the substrate, an electric contact on the first surface, a via, and a redistribution layer (RDL) on the second surface; wherein the RDL comprises a transmission line; wherein the via extends from the first surface to the second surface; wherein the electrode is electrically connected to the electric contact; wherein the electronics system is electrically connected to the electric contact and the transmission line through the via.
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公开(公告)号：US11947059B2
公开(公告)日：2024-04-02
申请号：US18309010
申请日：2023-04-28
发明人： Peiyan Cao , Yurun Liu
IPC分类号： G01T1/24
摘要： An apparatus for detecting X-ray, comprising an X-ray absorption layer comprising an electrode, an electronics layer and a wall sealing a space among electrical connections between the X-ray absorption layer and the electronics layer. The electronics layer comprises: a first and second voltage comparators configured to compare a voltage of an electrode to a first and second thresholds respectively; a counter configured to register a number of X-ray photons absorbed by the X-ray absorption layer; and a controller configured to: start a time delay from a time at which an absolute value of the voltage equals or exceeds an absolute value of the first threshold; activate the second voltage comparator during the time delay; cause the number registered by the counter to increase by one, if, during the time delay, an absolute value of the voltage equals or exceeds an absolute value of the second threshold.
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公开(公告)号：US11918394B2
公开(公告)日：2024-03-05
申请号：US17129006
申请日：2020-12-21
发明人： Peiyan Cao , Yurun Liu
IPC分类号： A61B6/14 , A61B6/03 , G01N23/046 , G01N23/10 , G01N23/203 , G01T1/24 , H01J37/26
CPC分类号： A61B6/4291 , A61B6/035 , A61B6/14 , A61B6/4233 , A61B6/4275 , G01N23/046 , G01N23/10 , G01N23/203 , G01T1/241 , H01J37/26 , G01N2223/501
摘要： Disclosed herein is a detector, comprising: a radiation absorption layer comprising an electric contact; a filter electrically connected to the electric contact and configured to attenuate signals from the electric contact below a first cutoff frequency; an integrator electrically connected to the filter and configured to integrate signals from the filter over a period of time.
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公开(公告)号：US11906677B2
公开(公告)日：2024-02-20
申请号：US17684887
申请日：2022-03-02
发明人： Peiyan Cao , Yurun Liu
IPC分类号： G01T1/24 , G01J1/44 , G01T1/17 , G06F21/30 , H01L27/146
CPC分类号： G01T1/247 , G01J1/44 , G01T1/17 , G06F21/30 , H01L27/14614 , H01L27/14659 , H01L27/14661
摘要： Disclosed herein is a method of recovering performance of a radiation detector, the radiation detector comprising: a radiation absorption layer configured to absorb radiation particles incident thereon and generate an electrical signal based on the radiation particles; an electronic system configured to process the electrical signal, the electronic system comprising a transistor, the transistor comprising a gate insulator with positive charge carriers accumulated therein due to exposure of the gate insulator to radiation; the method comprising: removing the positive charge carriers from the gate insulator by establishing an electric field across the gate insulator.
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公开(公告)号：US11848347B2
公开(公告)日：2023-12-19
申请号：US16709723
申请日：2019-12-10
发明人： Peiyan Cao , Chongshen Song , Yurun Liu
CPC分类号： H01L27/14658 , A61B6/032 , G01T1/17 , G01T1/24 , G01T1/243 , G01T1/244 , G01T1/246 , G01T1/247 , G01T1/2964 , G01T3/08 , H01L27/14661 , H01L27/14678 , H01L27/14689 , H04N5/32 , H04N25/68
摘要： Disclosed herein is an image sensor and a method of making the image sensor. The image sensor may comprise one or more packages of semiconductor radiation detectors. Each of the one or more packages may comprise a radiation detector that comprises a radiation absorption layer on a first strip of semiconductor wafer and an electronics layer on a second strip of semiconductor wafer. The radiation absorption layer may be continuous along the first strip of semiconductor wafer with no coverage gap. The first strip and the second strip may be longitudinally aligned and bonded together. The radiation detector may be mounted on a printed circuit board (PCB) and electrically connected to the PCB close to an edge of the radiation detector.
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公开(公告)号：US11617555B2
公开(公告)日：2023-04-04
申请号：US17863613
申请日：2022-07-13
发明人： Peiyan Cao , Yurun Liu
IPC分类号： A61B6/00
摘要： Disclosed herein is an apparatus comprising: an X-ray source configured to direct X-rays through a human tissue; an X-ray detector configured to capture an image of the human tissue with the X-rays; wherein the apparatus is configured to identify an image of a blood vessel from the image of the human tissue and configured to determine a blood sugar level based on the image of the blood vessel.
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公开(公告)号：US11517275B2
公开(公告)日：2022-12-06
申请号：US17081520
申请日：2020-10-27
发明人： Peiyan Cao , Yurun Liu
摘要： Disclosed herein is an apparatus comprising an insertion tube; an image sensor inside the insertion tube; wherein the image sensor comprises an array of pixels; wherein the image sensor is configured to count numbers of particles of radiation incident on the pixels, within a period of time. Also disclosed herein is a method of using this apparatus.
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公开(公告)号：US11454731B2
公开(公告)日：2022-09-27
申请号：US17236553
申请日：2021-04-21
发明人： Peiyan Cao , Yurun Liu
IPC分类号： G01T1/29
摘要： Disclosed herein is an image sensor comprising: a plurality of radiation detectors; a mask with a plurality of radiation transmitting zones and a radiation blocking zone; and an actuator configured to move the plurality of radiation detectors from a first position to a second position and to move the mask from a third position to a fourth position; wherein while the radiation detectors are at the first position and the mask is at the third position and while the radiation detectors are at the second position and the mask is at the fourth position, the radiation blocking zone blocks radiation from a radiation source that would otherwise incident on a dead zone of the image sensor and the radiation transmitting zones allow at least a portion of radiation from the radiation source that would incident on active areas of the image sensor to pass through.
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