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公开(公告)号：US20240120390A1
公开(公告)日：2024-04-11
申请号：US18073388
申请日：2022-12-01
发明人： TETSUYA OKADA , HIROKI ARAI
IPC分类号： H01L29/417 , H01L21/66 , H01L29/06 , H01L29/10 , H01L29/40 , H01L29/66 , H01L29/739
CPC分类号： H01L29/41708 , H01L22/12 , H01L29/0696 , H01L29/1095 , H01L29/401 , H01L29/66348 , H01L29/7397
摘要： A trench gate type IGBT includes a plurality of trenches, including a plurality of gate trenches having a gate region inside, and a plurality of emitter trenches having an emitter region connected to an emitter electrode. A mesa section adjacent to the trench has a second mesa region, which does not function as a channel; and a contact, which connects the emitter electrode; the second mesa region being sandwiched between the gate trench and the emitter trench.
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公开(公告)号：US20210117644A1
公开(公告)日：2021-04-22
申请号：US16654285
申请日：2019-10-16
IPC分类号： G06K9/00
摘要： Optical sensing systems and devices include a display substrate, a plurality of display elements for displaying visible images, a sensor light source for illuminating a sensing region, wherein the sensor light source is separate from the plurality of display elements, a detector for detecting light from the sensing region, and one or more aperture regions defined in the display between the display elements to facilitate and/or enhance illumination of the sensing region by the sensor light source. The displays may include OLED or LCD displays.
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公开(公告)号：US10796123B2
公开(公告)日：2020-10-06
申请号：US16006639
申请日：2018-06-12
IPC分类号： G06K9/00 , G02F1/137 , H01L27/32 , G01J1/04 , G02B5/30 , G02F1/1333 , H01L51/52 , G06T7/73 , G02F1/133 , G06K9/20 , G06K9/42 , G06K9/46 , G06T3/40 , H01L25/16 , G02F1/1368
摘要： Optical sensing systems and methods for imaging objects include under-display optical sensors with one or multiple discrete light sources positioned on, in or under the display. The optical sensors may include an array of optical sensing elements, e.g., photodetectors, arranged in or under the display. The displays include OLED or LCD displays.
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公开(公告)号：US20240176380A1
公开(公告)日：2024-05-30
申请号：US18166265
申请日：2023-02-08
发明人： HIROYUKI KIMURA
摘要： The disclosure includes: a third current mirror, through which a current obtained by adding a first reference current copied by a first current mirror and a second reference current copied by a second current mirror is made to flow; a reference resistor of the first type, through which the first reference current obtained by subtracting the second reference current copied by the first current mirror from one output of the third current mirror is made to flow; and a reference resistor of the second type, through which the second reference current obtained by subtracting the first reference current copied by the first current mirror from the other output of the third current mirror is made to flow. By the third current mirror, voltage drops at the reference resistor of the first type and the reference resistor of the second type are made the same, and the second reference current is set to be inversely proportional to the resistance value of the reference resistor of the second type.
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公开(公告)号：US10891460B2
公开(公告)日：2021-01-12
申请号：US16036615
申请日：2018-07-16
发明人： Guozhong Shen , Richard Klenkler , Paul Wickboldt , Young Seen Lee , Patrick Smith , Bob Lee Mackey , Marek Mienko , Arash Akhavan Fomani , Alvin Jee , Erik Jonathon Thompson , Bjoren Davis
IPC分类号： G06K9/28 , G06K9/00 , G02B6/25 , G02B6/42 , G02B27/30 , H01L51/52 , H01L27/32 , H01L51/00 , G06K9/32
摘要： Disclosed is a device for optical sensing, comprising: a display comprising a transparent substrate and a plurality of light emitters disposed above the transparent substrate; a transparent cover layer disposed above the display, wherein a top surface of the transparent cover layer provides an input surface for sensing an input object; and, an angled filter disposed below the transparent substrate of the display, wherein the angled filter is configured to allow light within a tolerance angle of an acceptance angle to pass through the angled filter, wherein the acceptance angle is centered around a non-zero angle relative to a normal of the input surface.
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公开(公告)号：US20240201724A1
公开(公告)日：2024-06-20
申请号：US18155490
申请日：2023-01-17
发明人： HIROYUKI KIMURA
摘要： The disclosure: a positive mirror FET, through which a positive mirror current that is proportional to a positive-direction current in currents of an output FET in positive and negative directions is made to flow; a first operational amplifier, receiving a constant voltage at one end, receiving an upstream side voltage regarding the positive mirror current of the positive mirror FET at the other end, and outputting a voltage corresponding to the upstream side voltage regarding the positive mirror current of the positive mirror FET by converting an output voltage into a current and feeding back the current to the other end; a negative mirror FET, through which a negative mirror current that is proportional to a negative-direction current in the currents of the output FET in positive and negative directions is made to flow; and a second operational amplifier, receiving a constant voltage at one end, receiving an upstream side voltage regarding the negative mirror current of the negative mirror FET at the other end, and outputting a voltage corresponding to the upstream side voltage regarding the negative mirror current of the negative mirror FET by converting an output voltage into a current and feeding back the current to the other end. A detection value is output based on an output current obtained by adding a positive output current corresponding to the output of the first operational amplifier and a negative output current corresponding to the output of the second operational amplifier.
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公开(公告)号：US20230396148A1
公开(公告)日：2023-12-07
申请号：US17858304
申请日：2022-07-06
发明人： Hiroyuki KIMURA
CPC分类号： H02M1/083 , H02M1/0009 , H02M3/155
摘要： A switch circuit includes: a p-channel pass transistor, in which the source is connected to a power source and the drain is connected to a load; and a gate drive circuit, which is connected to the gate of the pass transistor. The gate drive circuit includes: a first transistor, through which a first current is made to flow by turn-on of an on/off signal; and an amplifier, in which a reference voltage corresponding to the first current is input to the negative input end, and a gate voltage of the gate is input to the positive input end, and which controls a gate current from the gate by an output from the output end in a manner that the gate voltage matches the reference voltage, and is capable of setting a maximum current of the output. A soft-on time from turn-on of the on/off signal to turn-on of the pass transistor is set by setting the maximum current according to the gate capacitance of the pass transistor.
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公开(公告)号：US11669125B1
公开(公告)日：2023-06-06
申请号：US17833995
申请日：2022-06-07
发明人： Hiroyuki Kimura
CPC分类号： G06F1/08 , G06F1/10 , H03K5/00006 , H03K19/20
摘要： The clock generation circuit outputs a clock signal with a constant cycle by repeating the following operations: when an enable signal becomes a H level, the clock signal immediately rises, and a sense end is changed to a L level via a first capacitor, then a voltage of the sense end is gradually increased via a resistor, and when the sense end reaches a predetermined potential, an output of a second inverter becomes the L level, the clock signal becomes the L level, an inverted clock signal becomes the H level, and accordingly the sense end becomes the H level; and thereafter, a current flows via the resistor so that the voltage of the sense end decreases gradually, when the sense end reaches a predetermined potential, the output of the second inverter becomes a H level, the clock signal becomes the H level, the sense end is changed to a L level via the first capacitor, then the voltage of the sense end is gradually increased via the resistor, and when the sense end reaches a predetermined potential, the output of the second inverter becomes the L level and the clock signal becomes the L level.
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公开(公告)号：US20200278482A1
公开(公告)日：2020-09-03
申请号：US16878138
申请日：2020-05-19
发明人： Patrick Smith , Paul Wickboldt , Patrick A. Worfolk , Steven Molesa , Young Lee , Richard Klenkler
摘要： Fingerprint sensors include a plurality of optical sensor elements, a collimator filter disposed above the plurality of optical sensor elements, and a display disposed above the collimator filter, wherein the display is a fingerprint imaging light source. The collimator filter has a plurality of apertures, and the plurality of optical sensor elements is configured to receive light transmitted through one aperture of the plurality of apertures.
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公开(公告)号：US20240347584A1
公开(公告)日：2024-10-17
申请号：US18340485
申请日：2023-06-23
发明人： Tetsuya OKADA , Kikuo OKADA , Hiroki ARAI
IPC分类号： H01L29/06 , H01L29/10 , H01L29/861
CPC分类号： H01L29/0603 , H01L29/1095 , H01L29/861
摘要： [Problem to be solved] To reduce recovery loss.
[Solution] A semiconductor device 10 includes: an anode electrode 20, formed on a front surface of a semiconductor substrate 12; a cathode electrode 22, formed on a back surface; a P layer 16, formed on the anode electrode 20 side; an N layer 14, formed on the cathode electrode 22 side; an N+ layer 26, arranged between the P layer 16 and the N layer 14 and having a higher carrier concentration than the N layer 14; and an anode trench 30, which extends from the front surface of the semiconductor substrate 12 toward the back surface side thereof and extends to the N+ layer 26 through the P layer 16, and in which an insulating film 32 is formed between the peripheral N+ layer 26, and a conductive material 34 arranged inside is connected to the anode electrode 20.
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