Patents by Inventor Chen-Chih Fan
Chen-Chih Fan 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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Patent number: 10810399Abstract: An optical fingerprint sensing module for sensing a fingerprint pattern of a finger is provided, wherein the finger is placed on a display panel module, and light is generated by the display panel module and reflected by the finger. The optical fingerprint sensing module includes a circuit board, an image sensor on the circuit board, a frame on the circuit board, a lens embedded in the frame, and an IR filter disposed above the image sensor. The image sensor is located in the frame, and the frame includes anti-infrared material. The lens corresponds to a sensing area of the display panel module. Light emitted from the display panel module is reflected by the finger located in the sensing area and then sequentially propagates through the lens and the IR filter to reach the image sensor.Type: GrantFiled: July 8, 2019Date of Patent: October 20, 2020Assignee: EGIS TECHNOLOGY INC.Inventors: Chen-Chih Fan, Tong-Long Fu
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Publication number: 20200259024Abstract: A manufacturing method of a sensing module for an optical fingerprint sensor is provided. A plurality of photo detectors are formed in a light sensing layer. The photo detectors are arranged in a sensing array. A plurality of collimators are formed in a light filter layer. The collimators are divided into a plurality of collimator groups corresponding to the photo detectors. The collimator groups are arranged in a collimator group array. The light sensing layer is attached to the light filter layer so that the light filter layer is disposed on the light sensing layer and the collimator group array of the light filter layer is aligned with the sensing array of the light sensing layer. Each of the collimator groups corresponds to one of the photo detectors, and aligned with and disposed above the corresponding photo detector. Each of the collimator groups comprises the same number of collimators arranged in a specific pattern.Type: ApplicationFiled: April 28, 2020Publication date: August 13, 2020Inventors: Yu-Hsiang HUANG, Tong-Long FU, Chen-Chih FAN
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Publication number: 20200193936Abstract: An electronic device using an under-display fingerprint identification technology and a waking method of the electronic device are provided. The electronic device includes a display panel, a central processing unit and a fingerprint sensing module. The electronic device executes an operating system. When the central processing unit and the operating system are in a power-saving mode, the fingerprint sensing module enters a default operation mode and the display panel enters an always-on display mode. Then, the fingerprint sensing module senses a specified region of the display panel to acquire a first image. If the content of the first image contains an image of a finger, the fingerprint sensing module issues an interrupt signal to the central processing unit. Consequently, the central processing unit is woken up from the power-saving mode and the operating system is woken up.Type: ApplicationFiled: October 15, 2019Publication date: June 18, 2020Inventors: TONG-LONG FU, CHEN-CHIH FAN, CHUN-CHING TSENG, WEI-JUNG WANG, CHUN-FENG KAO, YUNG-FU CHEN
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Publication number: 20200184246Abstract: An optical fingerprint sensing module is provided, including a substrate, an image sensor disposed on the substrate, a frame disposed on the substrate, a lens, and a plurality of micro-lenses. The micro-lenses have an infrared cut-off material and are disposed above the image sensor. Light emitted from a display panel module is reflected by a finger and then sequentially propagates through the lens and the micro-lenses to reach the image sensor.Type: ApplicationFiled: October 23, 2019Publication date: June 11, 2020Inventor: Chen-Chih FAN
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Patent number: 10680121Abstract: An optical fingerprint sensor is provided. The optical fingerprint sensor includes a sensing module. The sensing module includes a light sensing layer and a light filter layer disposed above the light sensing layer. The light sensing layer includes a plurality of photo detectors arranged in a sensing array. The light filter layer includes a plurality of collimators. The collimators are divided into a plurality of collimator groups corresponding to the photo detectors, and the number of collimator groups is equal to the number of photo detectors. Each of the collimator groups comprises the same number of collimators arranged in a specific pattern and disposed above the corresponding photo detector. The photo detectors receive reflected light from a user's finger through the collimators of the corresponding collimator groups.Type: GrantFiled: June 13, 2018Date of Patent: June 9, 2020Assignee: EGIS TECHNOLOGY INC.Inventors: Yu-Hsiang Huang, Tong-Long Fu, Chen-Chih Fan
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Patent number: 10608090Abstract: A method of forming a memory device with memory cells in a memory area, and logic devices in first and second peripheral areas. The memory cells each include a floating gate, a word line gate and an erase gate, and each logic device includes a gate. The oxide under the word line gate is formed separately from a tunnel oxide between the floating and erase gates, and is also the gate oxide in the first peripheral area. The word line gates, erase gates and gates in both peripheral areas are formed from the same polysilicon layer. The oxide between the erase gate and a source region is thicker than the tunnel oxide, which is thicker than the oxide under the word line gate.Type: GrantFiled: September 20, 2018Date of Patent: March 31, 2020Assignee: Silicon Storage Technology, Inc.Inventors: Jeng-Wei Yang, Chun-Ming Chen, Man-Tang Wu, Chen-Chih Fan, Nhan Do
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Publication number: 20200026898Abstract: An optical fingerprint sensing module for sensing a fingerprint pattern of a finger placed on an upper surface of a display panel module is provided, wherein light is generated by the display panel module and reflected by the finger. The optical fingerprint sensing module includes a substrate, an image sensor disposed above the substrate, a collimating layer disposed above the image sensor, a light permeable layer disposed above the collimating layer, and a pinhole layer disposed above the light permeable layer. The collimating layer has a plurality of collimating holes, and the pinhole layer has a plurality of pinholes, wherein the number of collimating holes is greater than the number of pinholes. Light is reflected by the finger and then sequentially propagates through the pinholes, the light permeable layer, and the collimating holes to reach the image sensor.Type: ApplicationFiled: July 11, 2019Publication date: January 23, 2020Inventors: Chen-Chih FAN, Tong-Long FU, Yu-Hsiang HUANG
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Publication number: 20200019746Abstract: An optical fingerprint sensing module for sensing a fingerprint pattern of a finger is provided, wherein the finger is placed on a display panel module, and light is generated by the display panel module and reflected by the finger. The optical fingerprint sensing module includes a circuit board, an image sensor on the circuit board, a frame on the circuit board, a lens embedded in the frame, and an IR filter disposed above the image sensor. The image sensor is located in the frame, and the frame includes anti-infrared material. The lens corresponds to a sensing area of the display panel module. Light emitted from the display panel module is reflected by the finger located in the sensing area and then sequentially propagates through the lens and the IR filter to reach the image sensor.Type: ApplicationFiled: July 8, 2019Publication date: January 16, 2020Inventors: Chen-Chih FAN, Tong-Long FU
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Publication number: 20200012834Abstract: An optical fingerprint sensing module is provided, including a circuit board, a first light-reflective element, a lens, and an image sensor electrically connected to the circuit board. The optical fingerprint sensing module is disposed below a display panel module. Light is generated by the display panel module and reflected by a finger to propagate along a first direction. Subsequently, light is reflected by the first light-reflective element and propagates through the lens in a second direction to reach the image sensor.Type: ApplicationFiled: July 5, 2019Publication date: January 9, 2020Inventors: Chen-Chih FAN, Tong-Long FU
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Patent number: 10388689Abstract: A fingerprint identification system, comprising panel, for placing finger; light source, disposed under panel, for generating incident light, wherein incident light is emitted to and reflected by finger to generate reflected light; processor, for performing fingerprint identification on finger according to plurality of sensing signals; and optical sensing array, disposed under panel and coupled to processor, comprising plurality of sensing units for generating plurality of sensing signals, each of sensing units comprising optical sensor, for receiving reflected light reflected by finger to generate sensing signal; focusing layer, disposed under panel, for focusing reflected light reflected by finger; blocking layer, disposed under focusing layer, for blocking part of reflected light to reduce diffraction phenomenon of reflected light; shading layer, disposed under blocking layer, for blocking part of reflected light to limit incident angle of reflected light; and aperture layer, disposed under shading layer aType: GrantFiled: January 15, 2018Date of Patent: August 20, 2019Assignee: Egis Technology Inc.Inventors: Yu-Hsiang Huang, Chen-Chih Fan, Tong-Long Fu
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Publication number: 20190103470Abstract: A method of forming a memory device with memory cells in a memory area, and logic devices in first and second peripheral areas. The memory cells each include a floating gate, a word line gate and an erase gate, and each logic device includes a gate. The oxide under the word line gate is formed separately from a tunnel oxide between the floating and erase gates, and is also the gate oxide in the first peripheral area. The word line gates, erase gates and gates in both peripheral areas are formed from the same polysilicon layer. The oxide between the erase gate and a source region is thicker than the tunnel oxide, which is thicker than the oxide under the word line gate.Type: ApplicationFiled: September 20, 2018Publication date: April 4, 2019Inventors: Jeng-Wei Yang, Chun-Ming Chen, Man-Tang Wu, Chen-Chih Fan, Nhan Do
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Publication number: 20180366593Abstract: An optical fingerprint sensor is provided. The optical fingerprint sensor includes a sensing module. The sensing module includes a light sensing layer and a light filter layer disposed above the light sensing layer. The light sensing layer includes a plurality of photo detectors arranged in a sensing array. The light filter layer includes a plurality of collimators. The collimators are divided into a plurality of collimator groups corresponding to the photo detectors, and the number of collimator groups is equal to the number of photo detectors. Each of the collimator groups comprises the same number of collimators arranged in a specific pattern and disposed above the corresponding photo detector. The photo detectors receive reflected light from a user's finger through the collimators of the corresponding collimator groups.Type: ApplicationFiled: June 13, 2018Publication date: December 20, 2018Inventors: Yu-Hsiang HUANG, Tong-Long FU, Chen-Chih FAN
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Publication number: 20180233531Abstract: A fingerprint identification system, comprising panel, for placing finger; light source, disposed under panel, for generating incident light, wherein incident light is emitted to and reflected by finger to generate reflected light; processor, for performing fingerprint identification on finger according to plurality of sensing signals; and optical sensing array, disposed under panel and coupled to processor, comprising plurality of sensing units for generating plurality of sensing signals, each of sensing units comprising optical sensor, for receiving reflected light reflected by finger to generate sensing signal; focusing layer, disposed under panel, for focusing reflected light reflected by finger; blocking layer, disposed under focusing layer, for blocking part of reflected light to reduce diffraction phenomenon of reflected light; shading layer, disposed under blocking layer, for blocking part of reflected light to limit incident angle of reflected light; and aperture layer, disposed under shading layer aType: ApplicationFiled: January 15, 2018Publication date: August 16, 2018Inventors: Yu-Hsiang Huang, Chen-Chih Fan, Tong-Long Fu
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Patent number: 9802816Abstract: A microelectromechanical system (MEMS) device may include a MEMS structure above a first substrate. The MEMS structure comprising a central static element, a movable element, and an outer static element. A portion of bonding material between the central static element and the first substrate. A second substrate above the MEMS structure, with a portion of a dielectric layer between the central static element and the second substrate. A supporting post comprises the portion of bonding material, the central static element, and the portion of dielectric material.Type: GrantFiled: September 21, 2015Date of Patent: October 31, 2017Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.Inventors: Chang-Chia Chang, Chen-Chih Fan, Bruce C. S. Chou
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Patent number: 9771260Abstract: A method includes placing a microelectromechanical system (MEMS) device over a carrier, wire bonding the MEMS device to a bond pad on the carrier with a bond wire, and spray coating a buffer layer over the MEMS device and enclosing the bond wire. A Young's modulus value of the buffer layer is less than a Young's modulus value of the MEMS device.Type: GrantFiled: June 30, 2015Date of Patent: September 26, 2017Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.Inventors: Bruce C. S. Chou, Chen-Chih Fan
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Patent number: 9553062Abstract: A fingerprint identification device includes a first dielectric layer, a fingerprint sensing chip, a packaging layer, a first redistribution layer, a second dielectric layer, a second redistribution layer, and a third dielectric layer. The fingerprint sensing chip is disposed on the first dielectric layer and has a sensing transmission pad. The packaging layer defines a first via hole and covers the first dielectric layer and fingerprint sensing chip. Disposed on the packaging layer, the first redistribution layer contacts a drive transmission pad via the first via hole. The second dielectric layer defines a second via hole and covers the packaging layer and the first redistribution layer. Disposed on the second dielectric layer, the second redistribution layer defines a looped pattern, in addition to connect electrically with the first redistribution layer via the second via hole. The third dielectric layer covers the second dielectric layer and second redistribution layer.Type: GrantFiled: March 3, 2016Date of Patent: January 24, 2017Assignee: J-METRICS TECHNOLOGY CO., LTD.Inventors: Chen-Chih Fan, Wei-Ting Lin, Shih-Chun Kuo
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Patent number: 9422155Abstract: A device includes a semiconductor substrate, and a capacitive sensor having a back-plate, wherein the back-plate forms a first capacitor plate of the capacitive sensor. The back-plate is a portion of the semiconductor substrate. A conductive membrane is spaced apart from the semiconductor substrate by an air-gap. A capacitance of the capacitive sensor is configured to change in response to a movement of the polysilicon membrane.Type: GrantFiled: April 21, 2015Date of Patent: August 23, 2016Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.Inventors: Bruce C. S. Chou, Jung-Kuo Tu, Chen-Chih Fan
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Patent number: 9254999Abstract: Embodiments of mechanisms for forming a micro-electro mechanical system (MEMS) device are provided. The MEMS device includes a substrate and a MEMS sensor over the substrate. The MEMS sensor includes a floating heater disposed over the substrate. The MEMS sensor further includes a heat sink disposed over the substrate and at a side of the floating heater, and the heat sink has an air gap with the floating heater. The MEMS sensor further includes a first plurality of vias formed through the heat sink and thermally connected to the first substrate.Type: GrantFiled: November 21, 2013Date of Patent: February 9, 2016Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING CO., LTDInventors: Bruce C. S. Chou, Yang-Che Chen, Chen-Chih Fan
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Publication number: 20160009551Abstract: A microelectromechanical system (MEMS) device may include a MEMS structure above a first substrate. The MEMS structure comprising a central static element, a movable element, and an outer static element. A portion of bonding material between the central static element and the first substrate. A second substrate above the MEMS structure, with a portion of a dielectric layer between the central static element and the second substrate. A supporting post comprises the portion of bonding material, the central static element, and the portion of dielectric material.Type: ApplicationFiled: September 21, 2015Publication date: January 14, 2016Inventors: Chang-Chia Chang, Chen-Chih Fan, Bruce C.S. Chou
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Publication number: 20150344297Abstract: A device includes a semiconductor substrate, and a capacitive sensor having a back-plate, wherein the back-plate forms a first capacitor plate of the capacitive sensor. The back-plate is a portion of the semiconductor substrate. A conductive membrane is spaced apart from the semiconductor substrate by an air-gap. A capacitance of the capacitive sensor is configured to change in response to a movement of the polysilicon membrane.Type: ApplicationFiled: April 21, 2015Publication date: December 3, 2015Inventors: Bruce C.S. Chou, Jung-Kuo Tu, Chen-Chih Fan