Patents by Inventor Tsongming Kao
Tsongming Kao has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20230177863Abstract: Disclosed are methods, devices, apparatuses, and systems for an under-display ultrasonic fingerprint sensor. A display device may include a platen, a display underlying the platen, and an ultrasonic fingerprint sensor underlying the display, where the ultrasonic fingerprint sensor is configured to transmit and receive ultrasonic waves via an acoustic path through the platen and the display. A light-blocking layer and/or an electrical shielding layer may be provided between the ultrasonic fingerprint sensor and the display, where the light-blocking layer and/or the electrical shielding layer are in the acoustic path. A mechanical stress isolation layer may be provided between the ultrasonic fingerprint sensor and the display, where the mechanical stress isolation layer is in the acoustic path.Type: ApplicationFiled: January 30, 2023Publication date: June 8, 2023Inventors: Hrishikesh Vijaykumar Panchawagh, IIa Ravindra Badge, Yipeng LU, Kostadin Dimitrov Djordjev, Suryaprakash Ganti, Chin-Jen Tseng, Nicholas Ian Buchan, Tsongming Kao, Leonard Eugene Fennell, Firas Sammoura, Jessica Liu Strohmann, David William Burns
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Patent number: 11126814Abstract: An ultrasonic fingerprint sensor system of the present disclosure may be provided with a flexible substrate. The ultrasonic fingerprint sensor system may include a film stack disposed on the flexible substrate that provides acceptable acoustic coupling for fingerprint sensing. The ultrasonic fingerprint sensor system includes a high acoustic impedance layer in an acoustic path of ultrasonic waves through a display. The high acoustic impedance layer can be electrically conductive or electrically nonconductive. In some implementations, the ultrasonic fingerprint sensor system includes an ultrasonic transceiver or an ultrasonic transmitter separate from an ultrasonic receiver.Type: GrantFiled: July 29, 2019Date of Patent: September 21, 2021Assignee: QUALCOMM IncorporatedInventors: Yipeng Lu, Hrishikesh Vijaykumar Panchawagh, Kostadin Dimitrov Djordjev, Jae Hyeong Seo, Nicholas Ian Buchan, Chin-Jen Tseng, Tsongming Kao
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Publication number: 20210056276Abstract: A device and method for improved sensing with a biometric sensor assembly such as an ultrasound fingerprint sensor using an anti-fingerprint, oleophobic, or hydrophobic coating applied to a surface above the biometric sensor assembly. The coating improves the mechanical coupling of a human finger to the surface, helping to reduce acoustic loss through the finger to surface interface, improving at least the false-rejection ratio.Type: ApplicationFiled: August 19, 2019Publication date: February 25, 2021Inventors: Yipeng LU, Jessica Liu STROHMANN, Ila BADGE, Hrishikesh Vijaykumar PANCHAWAGH, Tsongming KAO
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Patent number: 10929636Abstract: An ultrasonic fingerprint sensor system of the present disclosure may be provided with a thick electrically nonconductive acoustic layer and thin electrode layer coupled to a piezoelectric layer of an ultrasonic transmitter or transceiver. The thick electrically nonconductive acoustic layer may have a high density or high acoustic impedance value, and may be adjacent to the piezoelectric layer. The thin electrode layer may be divided into electrode segments. The ultrasonic fingerprint sensor system may use flexible or rigid substrates, and may use an ultrasonic transceiver or an ultrasonic transmitter separate from an ultrasonic receiver.Type: GrantFiled: January 18, 2019Date of Patent: February 23, 2021Assignee: QUALCOMM IncorporatedInventors: Yipeng Lu, Hrishikesh Vijaykumar Panchawagh, Kostadin Dimitrov Djordjev, Chin-Jen Tseng, Nicholas Ian Buchan, Tsongming Kao, Jae Hyeong Seo
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Publication number: 20200234021Abstract: An ultrasonic fingerprint sensor system of the present disclosure may be provided with a thick electrically nonconductive acoustic layer and thin electrode layer coupled to a piezoelectric layer of an ultrasonic transmitter or transceiver. The thick electrically nonconductive acoustic layer may have a high density or high acoustic impedance value, and may be adjacent to the piezoelectric layer. The thin electrode layer may be divided into electrode segments. The ultrasonic fingerprint sensor system may use flexible or rigid substrates, and may use an ultrasonic transceiver or an ultrasonic transmitter separate from an ultrasonic receiver.Type: ApplicationFiled: January 18, 2019Publication date: July 23, 2020Inventors: Yipeng Lu, Hrishikesh Vijaykumar Panchawagh, Kostadin Dimitrov Djordjev, Chin-Jen Tseng, Nicholas Ian Buchan, Tsongming Kao, Jae Hyeong Seo
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Publication number: 20200125815Abstract: An ultrasonic fingerprint sensor system of the present disclosure may be provided with a flexible substrate. The ultrasonic fingerprint sensor system may include a film stack disposed on the flexible substrate that provides acceptable acoustic coupling for fingerprint sensing. The ultrasonic fingerprint sensor system includes a high acoustic impedance layer in an acoustic path of ultrasonic waves through a display. The high acoustic impedance layer can be electrically conductive or electrically nonconductive. In some implementations, the ultrasonic fingerprint sensor system includes an ultrasonic transceiver or an ultrasonic transmitter separate from an ultrasonic receiver.Type: ApplicationFiled: July 29, 2019Publication date: April 23, 2020Inventors: Yipeng Lu, Hrishikesh Vijaykumar Panchawagh, Kostadin Dimitrov Djordjev, Jae Hyeong Seo, Nicholas Ian Buchan, Chin-Jen Tseng, Tsongming Kao
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Publication number: 20180373913Abstract: Disclosed are methods, devices, apparatuses, and systems for an under-display ultrasonic fingerprint sensor. A display device may include a platen, a display underlying the platen, and an ultrasonic fingerprint sensor underlying the display, where the ultrasonic fingerprint sensor is configured to transmit and receive ultrasonic waves via an acoustic path through the platen and the display. A light-blocking layer and/or an electrical shielding layer may be provided between the ultrasonic fingerprint sensor and the display, where the light-blocking layer and/or the electrical shielding layer are in the acoustic path. A mechanical stress isolation layer may be provided between the ultrasonic fingerprint sensor and the display, where the mechanical stress isolation layer is in the acoustic path.Type: ApplicationFiled: June 12, 2018Publication date: December 27, 2018Inventors: Hrishikesh Vijaykumar Panchawagh, Ila Ravindra Badge, Yipeng Lu, Kostadin Dimitrov Djordjev, Suryaprakash Ganti, Chin-Jen Tseng, Nicholas Ian Buchan, Tsongming Kao, Leonard Eugene Fennell, Firas Sammoura, Jessica Liu Strohmann, David William Burns
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Publication number: 20150346478Abstract: A display assembly includes an array of display elements disposed between a first substrate and a second substrate, the array of display elements including one or more thin film transistors (TFTs). A black mask arrangement is disposed between the first substrate and the second substrate, the black mask arrangement being configured to prevent light entering the display assembly from reaching the TFTs.Type: ApplicationFiled: September 29, 2014Publication date: December 3, 2015Inventors: Cheonhong Kim, Tsongming Kao, Jian Ma, Lixia Zhou, Tallis Young Chang, Shu-Jhih Chen, John Hyunchul Hong
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Patent number: 9156678Abstract: This disclosure provides systems, methods and apparatus for a laminated film enclosing an array of microelectromechanical systems (MEMS) structures. In one aspect, a MEMS apparatus includes a substrate having a device region and an edge region surrounding the device region and an array of MEMS structures on the substrate at the device region. A protective layer is disposed over the array of MEMS structures. A laminated film is disposed over the protective layer and in contact with the substrate to form a seal at the edge region, where the laminated film forms a cavity between the substrate and the laminated film at the device region. The laminated film includes a moisture barrier layer facing away from the array of MEMS structures, and a desiccant layer facing toward the array of MEMS structures.Type: GrantFiled: December 12, 2013Date of Patent: October 13, 2015Assignee: QUALCOMM MEMS Technologies, Inc.Inventors: Wenguang Li, Tsongming Kao
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Publication number: 20150166333Abstract: This disclosure provides systems, methods and apparatus for a laminated film enclosing an array of microelectromechanical systems (MEMS) structures. In one aspect, a MEMS apparatus includes a substrate having a device region and an edge region surrounding the device region and an array of MEMS structures on the substrate at the device region. A protective layer is disposed over the array of MEMS structures. A laminated film is disposed over the protective layer and in contact with the substrate to form a seal at the edge region, where the laminated film forms a cavity between the substrate and the laminated film at the device region. The laminated film includes a moisture barrier layer facing away from the array of MEMS structures, and a desiccant layer facing toward the array of MEMS structures.Type: ApplicationFiled: December 12, 2013Publication date: June 18, 2015Applicant: QUALCOMM MEMS Technologies, Inc.Inventors: Wenguang Li, Tsongming Kao
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Patent number: 8803861Abstract: This disclosure provides systems, methods and apparatus for EMS devices. In one aspect, an EMS device includes an array of display elements and a plurality of driver lines with at least a portion of the plurality of driver lines routed above or below the array between one or more driver circuits and the array. In some implementations, at least a portion of the plurality of driver lines is disposed above a non-active area of the array. In one aspect, an EMS device can form a portion of at least one of the plurality of driver lines. In some implementations, movable layers of the array can be disposed between at least a portion of the plurality of driver lines and stationary electrodes of the display.Type: GrantFiled: February 23, 2012Date of Patent: August 12, 2014Assignee: QUALCOMM MEMS Technologies, Inc.Inventors: Tsongming Kao, Charles Leu, Kostadin Djordjev, Rihui He
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Publication number: 20140177188Abstract: This disclosure provides systems, methods and apparatus for packaging of dissimilar devices using electromagnetic radiation from a laser. In one aspect, an apparatus can include a first substrate, a second substrate, and a first device and a second device disposed on the second substrate. A first metal ring on the first substrate contacts a second metal ring on a second substrate, and is heated by a first electromagnetic radiation from a laser to enclose a first cavity containing the first device. A third metal ring on the first substrate contacts a fourth metal ring on the second substrate, and is heated by a second electromagnetic radiation to enclose a second cavity containing the second device. Enclosing the first cavity may be performed under a first atmosphere, and the enclosing the second cavity may be performed under a second, different atmosphere.Type: ApplicationFiled: December 26, 2012Publication date: June 26, 2014Applicant: QUALCOMM MEMS TECHNOLOGIES, INC.Inventors: Philip Jason Stephanou, Ravindra V. Shenoy, Kwan-Yu Lai, James G. Shook, Nassim Khonsari, Peter Jings Lin, Tsongming Kao, Peng Cheng Lin
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Publication number: 20140029078Abstract: This disclosure provides systems, methods and apparatus for protecting electromechanical systems (EMS) devices from mechanical interference. In one aspect, an array of EMS devices may include one or more regions in which an EMS device is replaced with a spacer structure, such that the overall height of the spacer structure is greater than the height of the surrounding EMS devices. In another aspect, resilient spacer structures can be formed overlying stable portions of an EMS device array. These resilient spacer structures may be formed from a cross-linked organic material.Type: ApplicationFiled: July 24, 2012Publication date: January 30, 2014Applicant: QUALCOMM MEMS TECHNOLOGIES, INC.Inventors: Leonard Eugene Fennell, Tsongming Kao, Teruo Sasagawa, Sapna Patel, Hung-Jen Wang
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Publication number: 20140028686Abstract: This disclosure provides systems, methods and apparatus for encapsulating a display device. In one aspect, an interferometric modulator (IMOD) is formed on a substrate. The IMOD includes an absorbing layer separated from the substrate, a reflective layer between the absorbing layer and the substrate, and an optical gap between the absorbing layer and the reflective layer. One or more thin film encapsulation layers hermetically seal the IMOD between the one or more thin film encapsulation layers and the substrate. In another aspect, an optical or functional layer can be formed over the one or more thin film encapsulation layers.Type: ApplicationFiled: July 27, 2012Publication date: January 30, 2014Applicant: QUALCOMM MEMS TECHNOLOGIES, INC.Inventors: Rihui He, Marek Mienko, Alok Govil, Tsongming Kao
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Publication number: 20130222351Abstract: This disclosure provides systems, methods and apparatus for EMS devices. In one aspect, an EMS device includes an array of display elements and a plurality of driver lines with at least a portion of the plurality of driver lines routed above or below the array between one or more driver circuits and the array. In some implementations, at least a portion of the plurality of driver lines is disposed above a non-active area of the array. In one aspect, an EMS device can form a portion of at least one of the plurality of driver lines. In some implementations, movable layers of the array can be disposed between at least a portion of the plurality of driver lines and stationary electrodes of the display.Type: ApplicationFiled: February 23, 2012Publication date: August 29, 2013Applicant: QUALCOMM MEMS Technologies, Inc.Inventors: Tsongming Kao, Charles Leu, Kostadin Djordjev, Rihui He
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Publication number: 20110261037Abstract: This disclosure provides methods, systems and apparatus for storing and processing image data at the pixel using augmented active matrix pixels. Some implementations of a display device may include a substrate, an array of display elements associated with the substrate and configured to display an image, an array of processor units associated with the substrate, wherein each processor unit is configured to process image data for a respective portion of the display elements and an array of memory units associated with the array of processor units, wherein each memory unit is configured to store data for a respective portion of the display elements. Some implementations may enable color processing image data at the pixel, layering of image data at the pixel or temporal modulation of image data at the pixel. Further, in some implementations, the display element may be an interferometric modulator (IMOD).Type: ApplicationFiled: April 21, 2011Publication date: October 27, 2011Applicant: QUALCOMM MEMS Technologies, Inc.Inventors: Alok Govil, Tsongming Kao, Marc M. Mignard, SuryaPrakash Ganti, Philip D. Floyd, Manish Kothari
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Publication number: 20110260956Abstract: This disclosure provides systems, methods and apparatus for sharing image data between interconnected pixels in a display device. Some implementations of a display device may include an array of pixels, where each pixel includes a display element, a memory element, one or more data interconnect lines connecting the pixel to one or more other pixels, one or more switches positioned in one or more of the interconnect lines and one or more scroll data lines connected to one or more of the switches. Some implementations may enable scrolling of image data on a display without writing new image data to the display. Further, in some implementations, the display element may be an interferometric modulator (IMOD). Some other implementations may additionally include a display, a processor configured to communicate with the display and a memory device that is configured to communicate with the processor.Type: ApplicationFiled: April 21, 2011Publication date: October 27, 2011Applicant: QUALCOMM MEMS Technologies, Inc.Inventors: Alok Govil, Tsongming Kao, Marc M. Mignard, SuryaPrakash Ganti, Philip D. Floyd, Manish Kothari
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Publication number: 20110261046Abstract: This disclosure provides systems, methods and apparatus, including computer programs encoded on computer storage media, for displaying an image using voltage shifting. In one aspect, a display device includes an array of display elements, each display element configurable into one of a plurality of states upon application of one of a plurality of voltages, and an array of voltage shifters, each voltage shifter associated with one or more of the display elements and configured to receive at least one input voltage from a display driver circuit and output at least one output voltage different than the input voltage to the associated one or more display elements. The voltage shifters can include, for example, at least one of an amplifier, a differential amplifier, an operational amplifier, a charge pump, a level shifter and a digital-to-analog converter.Type: ApplicationFiled: March 18, 2011Publication date: October 27, 2011Applicant: QUALCOMM MEMS Technologies, Inc.Inventors: Alok Govil, Tsongming Kao, Marc M. Mignard, SuryaPrakash Ganti, Philip D. Floyd, Manish Kothari
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Publication number: 20110261036Abstract: This disclosure provides systems, methods and apparatus for parallel dithering images are disclosed. In one aspect, a display device includes: a front substrate; a backplate opposing the front substrate; an array of display elements associated with the front substrate; and an array of processing units associated with the backplate. Each of the processing units is configured to process data for one or more of the display elements for dithering an image. Each of the processing units is spatially arranged to correspond to the one or more display elements for which it is configured to process data. The array of processing units can perform a faster dithering process than a single processor sequentially performing all computation for dithering. Further, the position of the array of processing units allows effective image data processing in an active-matrix type display device while utilizing the space of the backplate thereof.Type: ApplicationFiled: April 19, 2011Publication date: October 27, 2011Applicant: QUALCOMM MEMS TECHNOLOGIES, INC.Inventors: Alok Govil, Tsongming Kao, Marc Maurice Mignard, Suryaprakash Ganti, Philip Don Floyd, Manish Kothari
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Publication number: 20110261370Abstract: This disclosure provides systems, methods and apparatus, including computer programs encoded on computer storage media, for detecting proximity and/or color of an object. In one aspect, an optical sensor includes a plurality of transmissive interferometric elements, a plurality of detectors positioned to detect the presence and/or intensity of light transmitted through the elements, and a processor to determine the proximity of an object based at least in part upon input from the detectors. An optical signal can be sensed by selectively actuating certain elements in a set of transmissive interferometric elements in an array to allow transmission of optical signals within a first spectrum through the array, and detecting optical signals transmitted through the array.Type: ApplicationFiled: March 14, 2011Publication date: October 27, 2011Applicant: QUALCOMM MEMS Technologies, Inc.Inventors: Philip Floyd, Tsongming Kao, Marc Mignard, Suryaprakash Ganti, Manish Kothari