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公开(公告)号：US20230309245A1
公开(公告)日：2023-09-28
申请号：US18188186
申请日：2023-03-22
Applicant: Luxsentek Microelectronics Corp.
Inventor： Sheng-Cheng Lee , Wen-Sheng Lin , Chao-Yang Hsiao , Chih-Wei Lin , Chen-Hua Hsi , Yueh-Hung Ho
CPC classification number: H05K5/0091 , H05K1/181 , H05K1/11 , H05K2201/10106 , H05K2201/10121
Abstract: The present invention provides an optical sensor package assembly. The light shield is arranged in the groove of a package housing above the photosensitive chip. The connection wires between the substrate, the light emitting unit and the photosensitive chip can be printed or disposed on the surface of the substrate. Further, a distance between the photosensitive element and the chip edge is designed to reduce or avoid side leakage interference.
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Patent Agency Ranking
公开(公告)号：US11611821B1
公开(公告)日：2023-03-21
申请号：US17502950
申请日：2021-10-15
Applicant: Luxsentek Microelectronics Corp.
Inventor： Chih-Wei Lin , Sheng-Cheng Lee , Wen-Sheng Lin , Chen-Hua Hsi
IPC: H04R1/10 , H01L31/173 , H01L31/0203 , H04R1/02
Abstract: This invention provides an earphone with a low light transmittance and a non-porous sensor cover. Covering the sensing cover on the proximity sensing device can reduce the interference of most of the ambient light and improve measurement accuracy.
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公开(公告)号：US11703385B1
公开(公告)日：2023-07-18
申请号：US17952142
申请日：2022-09-23
Applicant: Luxsentek Microelectronics Corp.
Inventor： Wen-Sheng Lin , Sheng-Cheng Lee , Yueh-Hung Ho , Chih-Wei Lin , Chen-Hua Hsi
CPC classification number: G01J1/46 , G01J1/4228 , G01J1/44 , G01J2001/444
Abstract: The present invention provides a light sensor with dark current elimination. A dark current from a covered photodiode and a sensed current from a photodiode are respectively transformed to a dark voltage and a sensed voltage by a controlled integration circuit. A reverse capacitor receives the dark voltage and the sensed voltage to cancel out for each other, and outputs a corrected sensing voltage.
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公开(公告)号：US11441943B2
公开(公告)日：2022-09-13
申请号：US17168731
申请日：2021-02-05
Applicant: Luxsentek Microelectronics Corp.
Inventor： Chih-Wei Lin , Chen-Hua Hsi
Abstract: The present invention provides a proximity sensing device, which comprises an ambient light calibration digital-to-analog converter and at least one crosstalk calibration digital-to-analog converters. The proximity sensing device is able to quickly generate calibration parameters for the interference caused by the ambient list and crosstalk caused by different reflection, to calibrate the sensed signals to avoid wrong judgments.
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公开(公告)号：US11432381B1
公开(公告)日：2022-08-30
申请号：US17483173
申请日：2021-09-23
Applicant: Luxsentek Microelectronics Corp.
Inventor： Sheng-Cheng Lee , Wen-Sheng Lin , Chih-Wei Lin , Chen-Hua Hsi
Abstract: The present invention provides a photosensor device with temperature compensation, which can adjust or calibrate the number, time and power of luminescence of light emitting elements under different ambient temperatures, so that the light signal values received by the photosensor device can be kept consistent or within the error range, there are multiple applications.
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公开(公告)号：US11415459B2
公开(公告)日：2022-08-16
申请号：US17196347
申请日：2021-03-09
Applicant: Luxsentek Microelectronics Corp.
Inventor： Chih-Wei Lin , Chen-Hua Hsi
IPC: G01J1/44
Abstract: The present invention provides a photosensor device, which can cancel a dark current in 1-2 milliseconds. This photosensor device utilizes a small capacitor to quickly accumulate and transform the dark current to a dark-current voltage. Based on the dark-current voltage and an environment temperature, a calibration voltage can be obtained. By cancelling the calibration voltage from the sensed voltage to get a light voltage, which can be amplified to a lux signal. The process is very quick and sensitive, so the photosensor device can be used in an environment under a low luminance.
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