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公开(公告)号：US11243181B2
公开(公告)日：2022-02-08
申请号：US16781988
申请日：2020-02-04
Applicant: RICHTEK TECHNOLOGY CORPORATION
Inventor： Yu-Lin Yang , Chun-Hao Chang , Min-Da Wu , Hung-Der Su , Da-Hong Qian
Abstract: The invention provides a bio-detection device, including a carrier, a plurality of spacers, an electronic circuit, and a package layer, wherein an open platform is formed. The carrier includes a test region and a signal transmission wiring, wherein the test region is configured to carry a fluid under test. The spacers are located on the test region and electrically connected to two different voltage levels to form a capacitor for sensing a capacitance of the fluid. The spacers are connected to the signal transmission wiring. The electronic circuit receives and processes a sensing signal corresponding to the capacitance of the fluid. The package layer covers a portion of the carrier but does not cover the test region. The open platform is formed whereby a user can easily put in the fluid. The open platform has a bottom which includes the test region, and an area of the open platform is defined by the spacers and the package layer.
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公开(公告)号：US11169179B2
公开(公告)日：2021-11-09
申请号：US17115662
申请日：2020-12-08
Applicant: Richtek Technology Corporation
Inventor： Isaac Y. Chen , Chien-Fu Tang , Hsin-Yi Wu , Kai-Chuan Chan , Yu-Lin Yang
Abstract: A current sensing circuit having self-calibration includes two leads, a sensing element having a sensing resistance, and a sensing and calibration circuit. The sensing and calibration circuit senses and calibrates a sensing voltage of the sensing element, and senses a sensing current through the sensing element according to the sensing resistance and the sensing voltage, to generate a current sensing output signal. The sensing and calibration circuit includes two pads, a V2I circuit, a current mirror circuit and an I2V circuit. The sensing element has a first temperature coefficient (TC). The TC and/or the resistance of an adjusting resistor in the V2I circuit and an adjusting resistor in the I2V circuit are determined according to the first TC, such that the TC of the current sensing output signal is equal to 0.
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Patent Agency Ranking
公开(公告)号：US20200173948A1
公开(公告)日：2020-06-04
申请号：US16781988
申请日：2020-02-04
Applicant: RICHTEK TECHNOLOGY CORPORATION
Inventor： Yu-Lin Yang , Chun-Hao Chang , Min-Da Wu , Hung-Der Su , Da-Hong Qian
Abstract: The invention provides a bio-detection device, including a carrier, a plurality of spacers, an electronic circuit, and a package layer, wherein an open platform is formed. The carrier includes a test region and a signal transmission wiring, wherein the test region is configured to carry a fluid under test. The spacers are located on the test region and electrically connected to two different voltage levels to form a capacitor for sensing a capacitance of the fluid. The spacers are connected to the signal transmission wiring. The electronic circuit receives and processes a sensing signal corresponding to the capacitance of the fluid. The package layer covers a portion of the carrier but does not cover the test region. The open platform is formed whereby a user can easily put in the fluid. The open platform has a bottom which includes the test region, and an area of the open platform is defined by the spacers and the package layer.
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公开(公告)号：US20190227018A9
公开(公告)日：2019-07-25
申请号：US15495136
申请日：2017-04-24
Applicant: RICHTEK TECHNOLOGY CORPORATION
Inventor： Yu-Lin Yang , Chun-Hao Chang , Min-Da Wu , Hung-Der Su , Da-Hong Qian
CPC classification number: G01N27/22 , B01L3/502 , B01L3/508 , B01L2200/12 , B01L2300/0627 , B01L2300/0645 , B01L2300/0663 , B01L2300/0887 , B01L2300/161 , G01N27/226
Abstract: The invention provides a bio-detection device, including a carrier, a plurality of spacers, an electronic circuit, and a package layer, wherein an open platform is formed. The carrier includes a test region and a signal transmission wiring, wherein the test region is configured to carry a fluid under test. The spacers are located on the test region and electrically connected to two different voltage levels to form a capacitor for sensing a capacitance of the fluid. The spacers are connected to the signal transmission wiring. The electronic circuit receives and processes a sensing signal corresponding to the capacitance of the fluid. The package layer covers a portion of the carrier but does not cover the test region. The open platform is formed whereby a user can easily put in the fluid. The open platform has a bottom which includes the test region, and an area of the open platform is defined by the spacers and the package layer.
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公开(公告)号：US20210270870A1
公开(公告)日：2021-09-02
申请号：US17115662
申请日：2020-12-08
Applicant: Richtek Technology Corporation
Inventor： Isaac Y. Chen , Chien-Fu Tang , Hsin-Yi Wu , Kai-Chuan Chan , Yu-Lin Yang
Abstract: A current sensing circuit having self-calibration includes two leads, a sensing element having a sensing resistance, and a sensing and calibration circuit. The sensing and calibration circuit senses and calibrates a sensing voltage of the sensing element, and senses a sensing current through the sensing element according to the sensing resistance and the sensing voltage, to generate a current sensing output signal. The sensing and calibration circuit includes two pads, a V2I circuit, a current mirror circuit and an I2V circuit. The sensing element has a first temperature coefficient (TC). The TC and/or the resistance of an adjusting resistor in the V2I circuit and an adjusting resistor in the I2V circuit are determined according to the first TC, such that the TC of the current sensing output signal is equal to 0.
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公开(公告)号：US10591434B2
公开(公告)日：2020-03-17
申请号：US15495136
申请日：2017-04-24
Applicant: RICHTEK TECHNOLOGY CORPORATION
Inventor： Yu-Lin Yang , Chun-Hao Chang , Min-Da Wu , Hung-Der Su , Da-Hong Qian
Abstract: The invention provides a bio-detection device, including a carrier, a plurality of spacers, an electronic circuit, and a package layer, wherein an open platform is formed. The carrier includes a test region and a signal transmission wiring, wherein the test region is configured to carry a fluid under test. The spacers are located on the test region and electrically connected to two different voltage levels to form a capacitor for sensing a capacitance of the fluid. The spacers are connected to the signal transmission wiring. The electronic circuit receives and processes a sensing signal corresponding to the capacitance of the fluid. The package layer covers a portion of the carrier but does not cover the test region. The open platform is formed whereby a user can easily put in the fluid. The open platform has a bottom which includes the test region, and an area of the open platform is defined by the spacers and the package layer.
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公开(公告)号：US20240297101A1
公开(公告)日：2024-09-05
申请号：US18308665
申请日：2023-04-27
Applicant: Richtek Technology Corporation
Inventor： Yu-Lin Yang , Ming-Chih Hsu , Chun-Hao Chang
IPC: H01L23/495 , H01L21/48 , H01L21/56 , H01L23/31
CPC classification number: H01L23/49534 , H01L21/4828 , H01L21/4842 , H01L21/565 , H01L23/3107 , H01L23/49541
Abstract: A packaging method, includes: providing a continuous multi-package structure, which includes a lead frame and a molding layer formed on the lead frame, wherein the lead frame includes a plurality of recesses formed on a bottom surface on a side of the lead frame opposite to the molding layer; forming a coating layer on the bottom surface, to cover the bottom surface and the recesses on the bottom surface; and mechanically cutting the continuous multi-package structure through the recesses, to separately form a plurality of packaging units, wherein in each of the packaging units, an exposed portion of the lead frame exposed in the recesses includes a step shape.
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