Patents by Inventor Jun-Wen Chung

Jun-Wen Chung 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).

  • Publication number: 20250040812
    Abstract: A blood pressure measurement device includes a substrate, a protrusion portion, an image sensor, a first light source, a second light source, and a control and processing unit. The first light source projects a first light toward the base plat. A finger presses the protrusion portion, and the image sensor captures an image of a bright area. The processing unit calculates a number of light-receivable pixels of image sensor and compares with a number of pixels able to receive light of image sensor to obtain a ratio value, and determines whether the finger has enough pressure. The second light source projects a second light toward the substrate, penetrating the substrate and the finger skin to be reflected by a blood vessel. The image sensor captures an image of a changed volume of the blood vessel, and the control and processing unit calculates the systolic or diastolic pressure.
    Type: Application
    Filed: October 26, 2023
    Publication date: February 6, 2025
    Inventors: Jun-Wen Chung, Hsu-Wen Fu, Za-Hara Fu, Chia-Hao Chang
  • Patent number: 12099216
    Abstract: The present invention provides a surface light source projection device, which includes a light emitting module and a diffractive optical module. Wherein, the diffractive optical module has two micron diffractive layers, the micron diffractive layers include a plurality of micron structures, and the shape of the micron structures is set to be cone, disc or any combination of the above. The micron structures have an outer diameter, and the outer diameter of the micron structures is between 5 times and 200 times of the incident wavelength of the light beam output from the light emitting module. Thereby, the surface light source projection device capable of enduring heat accumulation generated after continuous irradiation of high-energy laser is provided to facilitate long-term irradiation and long-distance sensing.
    Type: Grant
    Filed: April 27, 2022
    Date of Patent: September 24, 2024
    Assignee: Guangzhou Tyrafos Semiconductor Tech. Co., Ltd.
    Inventors: Jun-Wen Chung, Hsu-Wen Fu, Lu-Lang Hsu
  • Publication number: 20240193984
    Abstract: Provided is a full-screen display device with unit pixel having function for emitting and receiving light, including a water-oxygen barrier layer, a protective panel, a plurality of unit pixels, a light-shielding layer, and a plurality of lens. At least one of the unit pixels has a light-emitting area inside, and has a light-sensing area inside or outside. For biometrics recognition, the light-emitting area emits an incident light, which penetrates through the water-oxygen barrier layer and scatters outwardly by at least one of the lenses. The scattered incident light penetrates through the protective panel, and reflected by a test object. The reflected light penetrates through the protective panel and is converged by at least one of the lenses. The converged reflected light penetrates through the water-oxygen barrier, and the light-sensing area receives and converts the reflected light to an image electrical signal.
    Type: Application
    Filed: November 6, 2023
    Publication date: June 13, 2024
    Inventors: Chun-Yu Lee, Jun-Wen Chung
  • Publication number: 20240194128
    Abstract: Provided is a full-screen display device having different unit pixels for emitting and receiving light, including a water-oxygen barrier layer, a protective panel, a plurality of unit pixels, a light-shielding layer, and a plurality of lenses. When the device performs biometric recognition, at least one unit pixel is defined as a light-emitting element, at least one unit pixel is defined as a sensing element, and the sensing element has a light-sensing area. The light-emitting element emits an incident light to penetrate the water-oxygen barrier layer and scatter outwardly by at least one lens. The scattered incident light penetrates the protective panel, and then reflected by a test object, followed by penetrating the protective panel, and entering at least one lens, which converges the reflected light. The converged light penetrates the water-oxygen barrier layer to be received by the light-sensing area and converted into an image electrical signal.
    Type: Application
    Filed: October 25, 2023
    Publication date: June 13, 2024
    Inventors: Chun-Yu Lee, Jun-Wen Chung
  • Publication number: 20240161505
    Abstract: Provided is behavior image sensor system, including a first image capturing unit and a control unit. The first image capturing unit is used for capturing a moving image. The control unit is electrically connected to the first image capturing unit, receives the moving image, and calculates a moving track of a moving object in the moving image, thereby determining whether the moving track of the moving object conforms to a particularly dangerous behavior pattern. As such, the behavior image sensor system does not need to capture a static image of a static object completely and determine a behavior pattern of the static object, so that the behavior image sensor system may reduce the quantity of data a lot and is suitable for all kinds of environment.
    Type: Application
    Filed: August 9, 2023
    Publication date: May 16, 2024
    Inventors: Hsu-Wen Fu, Jun-Wen Chung, Chia-Hao Chang
  • Publication number: 20240045032
    Abstract: A LiDAR system includes a microcontroller, a laser light source, a lens module, and a receiver. The lens module includes a laser beam splitter module and a receiver lens module, the laser beam splitter module receiving a laser light and diffracting the laser light into multiple diffractive lights emitted toward a target. The receiver lens module receives a reflective light signal of the diffractive lights reflected from the target and emits the reflective light signal towards the receiver. A frame of the LiDAR system includes a plurality of subframes. The microcontroller compares the average distance values at the same sampling area of each subframe within the frame, eliminates the subframes with abnormal average distance values, and fuses the other subframes with similar average distance values as a final distance value of the frame.
    Type: Application
    Filed: August 4, 2023
    Publication date: February 8, 2024
    Inventor: Jun-Wen Chung
  • Publication number: 20240045068
    Abstract: A LiDAR system includes a microcontroller, a laser light source, a lens module, and a receiver. The lens module includes a receiver lens module and a laser beam splitter module. The laser beam splitter module includes a diffractive optical element and a collimation lens assembly. The laser light source emits a plurality of laser beams with different wavelengths and includes a light coupler. The light coupler optically couples the laser beams into a collimated light signal. In a sensor shutter time of each subframe in a frame, a plurality of pixels of the receiver receive at least one reflective light signal of the laser light with different wavelengths to obtain a plurality of subframes of environmental images, and takes a distance value represented by the reflective light signals as a distance value of the pixels of the subframe, the microcontroller fuses the distance values of the pixels of the plurality of subframes of the environmental images as a final distance value of the frame.
    Type: Application
    Filed: August 4, 2023
    Publication date: February 8, 2024
    Inventors: Jun-Wen Chung, Hsu-Wen Fu, Ping-Hung Yin
  • Publication number: 20230400429
    Abstract: A bioassay device with evenly dispersed carriers includes an image sensor unit, a plurality of microstructures and a first EWOD device. The image sensor unit includes a substrate and a plurality of unit pixels, the substrate has a light-receiving surface, the plurality of unit pixels are disposed in the substrate and close to the light-receiving surface, and each unit pixel has a photoelectric conversion unit. The plurality of microstructures is disposed on the light-receiving surface and forms a plurality of grooves, and the plurality of grooves is respectively located above the plurality of unit pixels. The first EWOD device includes a plurality of first EWOD electrodes, the plurality of first EWOD electrodes is disposed on the light-receiving surface outside of the grooves, or the plurality of first EWOD electrodes is disposed above the substrate.
    Type: Application
    Filed: October 17, 2022
    Publication date: December 14, 2023
    Inventors: Hsu-Wen Fu, Jun-Wen Chung, Ping-Hung Yin
  • Publication number: 20230341598
    Abstract: The present invention provides a surface light source projection device with improved zero-order diffraction, which includes a light exit module and a diffractive optical module. Wherein, the diffractive optical module has two micron diffractive layers, the micron diffractive layers include a plurality of microstructures, and the microstructures are provided with a first recess, and the first recess has a first depth and a first outer diameter. The outer diameter of the microstructures is between 5 times and 200 times the incident wavelength of the narrow half-wave width, and the first outer diameter of the first recess is between 0.3 and 0.7 times the outer diameter. As such, a surface light source projection device that can generate a diffraction pattern with uniform spot intensity and can illuminate for a long time is provided.
    Type: Application
    Filed: June 16, 2022
    Publication date: October 26, 2023
    Inventors: Jun-Wen CHUNG, Hsu-Wen Fu, Lu-Lang HSU
  • Publication number: 20230244008
    Abstract: The present invention provides a surface light source projection device, which includes a light emitting module and a diffractive optical module. Wherein, the diffractive optical module has two micron diffractive layers, the micron diffractive layers include a plurality of micron structures, and the shape of the micron structures is set to be cone, disc or any combination of the above. The micron structures have an outer diameter, and the outer diameter of the micron structures is between 5 times and 200 times of the Narrow half-wave width incident wavelength of the light beam output from the light emitting module. Thereby, the surface light source projection device capable of enduring heat accumulation generated after continuous irradiation of high-energy laser is provided to facilitate long-term irradiation and long-distance sensing.
    Type: Application
    Filed: April 27, 2022
    Publication date: August 3, 2023
    Inventors: Jun-Wen CHUNG, Hsu-Wen Fu, Lu-Lang HSU
  • Publication number: 20230123442
    Abstract: The present invention provides a biomolecule image sensor in which detection molecules are deposed on a light receiving surface of an image sensing element, and method thereof for detecting biomolecule.
    Type: Application
    Filed: April 28, 2022
    Publication date: April 20, 2023
    Inventors: Ping-Hung Yin, Jun-Wen Chung, Chun-I Shao, Hsiao-Wen Sun, Hsu-Wen Fu, Chia-Hao Chang
  • Patent number: 11600100
    Abstract: An image sensing method, applicable to the anti-spoofing recognition of under screen optical fingerprint sensing, is provided, including: dividing the image sensor into sensing blocks, dividing the display area of the display device correspondingly according to the sensing area, and the display area including the light-emitting area; defining the luminous color of each display area and the color coordinate value of each luminous color; each sensing block sensing the light intensity of the image reflected to the sensing block from the display block emitting the light onto the reference object and the test object to be measured; calculating the anti-spoofing reference color information of the reference object and registering in the system; when sensing the fingerprint image, first obtaining the light intensity of each block, then calculating the color information of the test object; and finally, comparing the color information with the registered anti-spoofing reference color information.
    Type: Grant
    Filed: August 30, 2021
    Date of Patent: March 7, 2023
    Assignee: Guangzhou Tyrafos Semiconductor Tech. Co., Ltd.
    Inventors: Ping-Hung Yin, Jun-Wen Chung, Hua Chen, Fu-Kuo Lin, Hsu-Wen Fu
  • Publication number: 20220374623
    Abstract: An optical fingerprint identification structure is provided, including: a protective glass and an optical fingerprint identification module, wherein the optical fingerprint identification module is located under the protective glass. The protective glass of the present invention is of a thickness. The gap between the protective glass and the optical fingerprint identification module is an air gap. The optical fingerprint identification module further comprises: a receiving lens assembly, an image sensor module, a module housing, and a module housing extension, the receiving lens assembly is located at the top of the optical fingerprint identification module, that is, close to the air gap, and the image sensor module is located below the receiving lens assembly. As such, the size of the optical fingerprint identification structure is reduced, and is applicable to the side of device, so that the usable area on the front and back of the device is increased.
    Type: Application
    Filed: August 24, 2021
    Publication date: November 24, 2022
    Inventors: Hsu-Wen FU, Jun-Wen CHUNG, Yu-Heng CHEN, Yufan CHEN, Hung-Wen YANG
  • Publication number: 20220115443
    Abstract: The invention relates to a display device, applicable to fingerprint image recognition. The display device includes: a substrate, a cover panel, and unit pixels. First, the unit pixels on the display device emit light alternately. When a part of the unit pixels emit light, defined as in a light-emitting state, and when another part of the unit pixels do not emit light, defined as in a sensing state; then, the unit pixels in the light-emitting state are used as the light-emitting area; the unit pixels in the sensing state are used as the sensing area; the unit pixels in the light-emitting area emit incident light to and reflected by a test object; the unit pixels in the sensing area sense the reflected light, and generates an image electrical signal. Therefore, the display device can be used as both a light-emitting element and a sensing element for fingerprint image recognition.
    Type: Application
    Filed: September 2, 2021
    Publication date: April 14, 2022
    Inventors: Jun-Wen CHUNG, Hsu-Wen Fu
  • Publication number: 20220083759
    Abstract: An image sensing method, applicable to the anti-spoofing recognition of under screen optical fingerprint sensing, is provided, including: dividing the image sensor into sensing blocks, dividing the display area of the display device correspondingly according to the sensing area, and the display area including the light-emitting area; defining the luminous color of each display area and the color coordinate value of each luminous color; each sensing block sensing the light intensity of the image reflected to the sensing block from the display block emitting the light onto the reference object and the test object to be measured; calculating the anti-spoofing reference color information of the reference object and registering in the system; when sensing the fingerprint image, first obtaining the light intensity of each block, then calculating the color information of the test object; and finally, comparing the color information with the registered anti-spoofing reference color information.
    Type: Application
    Filed: August 30, 2021
    Publication date: March 17, 2022
    Inventors: Ping-Hung Yin, Jun-Wen CHUNG, Hua Chen, Fu-Kuo Lin, Hsu-Wen Fu
  • Patent number: 11100309
    Abstract: A fingerprint sensing device including a light guide cover plate, a light source, an image sensor, and a light output element is provided. The light guide cover plate includes a flat plate portion and a light entering portion. The flat plate portion has a first surface and a second surface opposite to each other. The light entering portion is located at the second surface, and has an inclined light incident surface inclined with respect to the first surface and the second surface. The light source is configured to emit a light beam. The light beam is transmitted to the light entering portion and the flat plate portion in sequence via the inclined light incident surface. The light output element is disposed on the second surface, and guides the light beam in the flat plate portion to the image sensor.
    Type: Grant
    Filed: June 17, 2020
    Date of Patent: August 24, 2021
    Assignee: Guangzhou Tyrafos Semiconductor Technologies Co., LTD
    Inventors: Jun-Wen Chung, Hsu-Wen Fu
  • Publication number: 20210049341
    Abstract: A fingerprint sensing device including a light guide cover plate, a light source, an image sensor, and a light output element is provided. The light guide cover plate includes a flat plate portion and a light entering portion. The flat plate portion has a first surface and a second surface opposite to each other. The light entering portion is located at the second surface, and has an inclined light incident surface inclined with respect to the first surface and the second surface. The light source is configured to emit a light beam. The light beam is transmitted to the light entering portion and the flat plate portion in sequence via the inclined light incident surface. The light output element is disposed on the second surface, and guides the light beam in the flat plate portion to the image sensor.
    Type: Application
    Filed: June 17, 2020
    Publication date: February 18, 2021
    Applicant: Guangzhou Tyrafos Semiconductor Technologies Co., LTD
    Inventors: Jun-Wen Chung, Hsu-Wen Fu
  • Patent number: 10824841
    Abstract: An under-screen fingerprint identification system includes an image sensing element, a display element, a translucent cover, and a Bragg polarization grating. The display element is disposed on the image sensing element. The translucent cover is disposed on the display element, and the display element is located between the translucent cover and the image sensing element. The translucent cover has a first surface and a second surface opposite to each other, and the first surface is farther away from the display element than the second surface. The Bragg polarization grating is disposed on the second surface of the translucent cover.
    Type: Grant
    Filed: July 8, 2019
    Date of Patent: November 3, 2020
    Assignee: Guangzhou Tyrafos Semiconductor Technologies Co., LTD
    Inventors: Jun-Wen Chung, Ping-Hung Yin
  • Publication number: 20200042767
    Abstract: An under-screen fingerprint identification system includes an image sensing element, a display element, a translucent cover, and a Bragg polarization grating. The display element is disposed on the image sensing element. The translucent cover is disposed on the display element, and the display element is located between the translucent cover and the image sensing element. The translucent cover has a first surface and a second surface opposite to each other, and the first surface is farther away from the display element than the second surface. The Bragg polarization grating is disposed on the second surface of the translucent cover.
    Type: Application
    Filed: July 8, 2019
    Publication date: February 6, 2020
    Applicant: Guangzhou Tyrafos Semiconductor Technologies Co., LTD
    Inventors: Jun-Wen Chung, Ping-Hung Yin
  • Publication number: 20200026165
    Abstract: A structured light projecting apparatus including a light source module, a beam splitting element, and first and second diffraction optical elements is provided. The light source emits a light beam. The beam splitting element is disposed on a transmission path of the light beam, and splits the light beam into first and second portion light beams. The first diffraction optical element is disposed on a transmission path of the first portion light beam. Multiple light beams are produced after the first portion light beam passes through the first diffraction optical element, so as to form a first structured light. The second diffraction optical element is disposed beside the first diffraction optical element and on a transmission path of the second portion light beam. Multiple light beams are produced after the second portion light beam passes through the second diffraction optical element, so as to form a second structured light.
    Type: Application
    Filed: April 12, 2019
    Publication date: January 23, 2020
    Applicant: Guangzhou Tyrafos Semiconductor Technologies Co., Limited
    Inventors: Hsu-Wen Fu, Chun-Yu Lee, Jun-Wen Chung, Ping-Hung Yin