Patents by Inventor PETER L. CHANG

PETER L. CHANG 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: 20240069248
    Abstract: Anti-reflective optical structures are disclosed. The anti-reflective optical structures include sub-wavelength structures in order to produce one or more index of refraction gradients within the anti-reflective optical structures. The one or more index of refraction gradients can reduce reflection of light over a broad band of wavelengths.
    Type: Application
    Filed: March 9, 2023
    Publication date: February 29, 2024
    Inventors: Mohamed Mahmoud, Huiyang Deng, Satyarth Suri, Jason S. Pelc, Peter L. Chang
  • Patent number: 11909175
    Abstract: An optoelectronic device includes an off-cut III-V semiconductor substrate, a set of epitaxial layers formed on the off-cut III-V semiconductor substrate, and a horizontal cavity surface-emitting laser (HCSEL) having a laser resonant cavity formed in the set of epitaxial layers. The same or another optoelectronic device includes a semiconductor substrate; a laser, epitaxially grown on the semiconductor substrate and having a laser resonant cavity; a semiconductor device, epitaxially grown on the semiconductor substrate and separated from the laser by a single trench having a first vertical wall abutting the laser and a second vertical wall abutting the semiconductor device; and at least one coating on at least one of the first vertical wall or the second vertical wall. The laser resonant cavity of the laser has a horizontal portion parallel to the semiconductor substrate, and each of the first vertical wall and the second vertical wall is oriented perpendicular to the semiconductor substrate.
    Type: Grant
    Filed: January 13, 2021
    Date of Patent: February 20, 2024
    Assignee: Apple Inc.
    Inventors: Chih-Wei Chuang, Peter L. Chang, Tong Chen
  • Patent number: 11569293
    Abstract: A micro-light emitting diode (LED) display panel and a method of forming the display panel, the micro-LED display panel having a monolithically grown micro-structure including a first color micro-LED that is a first color nanowire LED, and a second color micro-LED that is a second color nanowire LED.
    Type: Grant
    Filed: May 10, 2021
    Date of Patent: January 31, 2023
    Assignee: Intel Corporation
    Inventors: Khaled Ahmed, Kunjal Parikh, Peter L. Chang
  • Publication number: 20220224077
    Abstract: An optoelectronic device includes an off-cut III-V semiconductor substrate, a set of epitaxial layers formed on the off-cut III-V semiconductor substrate, and a horizontal cavity surface-emitting laser (HCSEL) having a laser resonant cavity formed in the set of epitaxial layers. The same or another optoelectronic device includes a semiconductor substrate; a laser, epitaxially grown on the semiconductor substrate and having a laser resonant cavity; a semiconductor device, epitaxially grown on the semiconductor substrate and separated from the laser by a single trench having a first vertical wall abutting the laser and a second vertical wall abutting the semiconductor device; and at least one coating on at least one of the first vertical wall or the second vertical wall. The laser resonant cavity of the laser has a horizontal portion parallel to the semiconductor substrate, and each of the first vertical wall and the second vertical wall is oriented perpendicular to the semiconductor substrate.
    Type: Application
    Filed: January 13, 2021
    Publication date: July 14, 2022
    Inventors: Chih-Wei Chuang, Peter L. Chang, Tong Chen
  • Publication number: 20210327957
    Abstract: A micro-light emitting diode (LED) display panel and a method of forming the display panel, the micro-LED display panel having a monolithically grown micro-structure including a first color micro-LED that is a first color nanowire LED, and a second color micro-LED that is a second color nanowire LED.
    Type: Application
    Filed: May 10, 2021
    Publication date: October 21, 2021
    Inventors: Khaled Ahmed, Kunjal Parikh, Peter L. Chang
  • Patent number: 11004894
    Abstract: A micro-light emitting diode (LED) display panel and a method of forming the display panel, the micro-LED display panel having a monolithically grown micro-structure including a first color micro-LED that is a first color nanowire LED, and a second color micro-LED that is a second color nanowire LED.
    Type: Grant
    Filed: May 19, 2020
    Date of Patent: May 11, 2021
    Assignee: Intel Corporation
    Inventors: Khaled Ahmed, Kunjal Parikh, Peter L. Chang
  • Patent number: 10886153
    Abstract: Micro pick-and-bond heads, assembly methods, and device assemblies. In, embodiments, micro pick-and-bond heads transfer micro device elements, such as (micro) LEDs, en masse from a source substrate to a target substrate, such as a LED display substrate. Anchor and release structures on the source substrate enable device elements to be separated from a source substrate, while pressure sensitive adhesive (PSA) enables device elements to be temporarily affixed to pedestals of a micro pick-and bond head. Once the device elements are permanently affixed to a target substrate, the PSA interface may be defeated through peeling and/or thermal decomposition of an interface layer.
    Type: Grant
    Filed: December 18, 2018
    Date of Patent: January 5, 2021
    Assignee: Intel Corporation
    Inventors: Peter L. Chang, Chytra Pawashe, Michael C. Mayberry, Jia-Hung Tseng
  • Publication number: 20200350360
    Abstract: A micro-light emitting diode (LED) display panel and a method of forming the display panel, the micro-LED display panel having a monolithically grown micro-structure including a first color micro-LED that is a first color nanowire LED, and a second color micro-LED that is a second color nanowire LED.
    Type: Application
    Filed: May 19, 2020
    Publication date: November 5, 2020
    Inventors: Khaled Ahmed, Kunjal Parikh, Peter L. Chang
  • Patent number: 10658422
    Abstract: A micro-light emitting diode (LED) display panel and a method of forming the display panel, the micro-LED display panel having a monolithically grown micro-structure including a first color micro-LED that is a first color nanowire LED, and a second color micro-LED that is a second color nanowire LED.
    Type: Grant
    Filed: December 27, 2018
    Date of Patent: May 19, 2020
    Assignee: Intel Corporation
    Inventors: Khaled Ahmed, Kunjal Parikh, Peter L. Chang
  • Publication number: 20190148188
    Abstract: Micro pick-and-bond heads, assembly methods, and device assemblies. In, embodiments, micro pick-and-bond heads transfer micro device elements, such as (micro) LEDs, en masse from a source substrate to a target substrate, such as a LED display substrate. Anchor and release structures on the source substrate enable device elements to be separated from a source substrate, while pressure sensitive adhesive (PSA) enables device elements to be temporarily affixed to pedestals of a micro pick-and bond head. Once the device elements are permanently affixed to a target substrate, the PSA interface may be defeated through peeling and/or thermal decomposition of an interface layer.
    Type: Application
    Filed: December 18, 2018
    Publication date: May 16, 2019
    Applicant: Intel Corporation
    Inventors: Peter L. Chang, Chytra Pawashe, Michael C. Mayberry, Jia-Hung Tseng
  • Publication number: 20190131345
    Abstract: A micro-light emitting diode (LED) display panel and a method of forming the display panel, the micro-LED display panel having a monolithically grown micro-structure including a first color micro-LED that is a first color nanowire LED, and a second color micro-LED that is a second color nanowire LED.
    Type: Application
    Filed: December 27, 2018
    Publication date: May 2, 2019
    Applicant: Intel Corporation
    Inventors: Khaled Ahmed, Kunjal Parikh, Peter L. Chang
  • Patent number: 10242892
    Abstract: Micro pick-and-bond heads, assembly methods, and device assemblies. In, embodiments, micro pick-and-bond heads transfer micro device elements, such as (micro) LEDs, en masse from a source substrate to a target substrate, such as a LED display substrate. Anchor and release structures on the source substrate enable device elements to be separated from a source substrate, while pressure sensitive adhesive (PSA) enables device elements to be temporarily affixed to pedestals of a micro pick-and-bond head. Once the device elements are permanently affixed to a target substrate, the PSA interface may be defeated through peeling and/or thermal decomposition of an interface layer.
    Type: Grant
    Filed: October 17, 2014
    Date of Patent: March 26, 2019
    Assignee: Intel Corporation
    Inventors: Peter L. Chang, Chytra Pawashe, Michael C. Mayberry, Jia-Hung Tseng
  • Patent number: 10204808
    Abstract: Micro pick-and-bond heads, assembly methods, and device assemblies. In, embodiments, micro pick-and-bond heads transfer micro device elements, such as (micro) LEDs, en masse from a source substrate to a target substrate, such as a LED display substrate. Anchor and release structures on the source substrate enable device elements to be separated from a source substrate, while pressure sensitive adhesive (PSA) enables device elements to be temporarily affixed to pedestals of a micro pick-and-bond head. Once the device elements are permanently affixed to a target substrate, the PSA interface may be defeated through peeling and/or thermal decomposition of an interface layer.
    Type: Grant
    Filed: October 17, 2014
    Date of Patent: February 12, 2019
    Assignee: Intel Corporation
    Inventors: Peter L. Chang, Chytra Pawashe, Michael C. Mayberry, Jia-Hung Tseng
  • Patent number: 10177195
    Abstract: A micro-light emitting diode (LED) display panel and a method of forming the display panel, the micro-LED display panel having a monolithically grown micro-structure including a first color micro-LED that is a first color nanowire LED, and a second color micro-LED that is a second color nanowire LED.
    Type: Grant
    Filed: September 30, 2016
    Date of Patent: January 8, 2019
    Assignee: Intel Corporation
    Inventors: Khaled Ahmed, Kunjal Parikh, Peter L. Chang
  • Patent number: 10128307
    Abstract: Crystalline (micro)LED display assemblies, methods of fabricating such display assemblies, crystalline LED source substrates from which the (micro)LEDs may be transferred to the display assembly, and methods of fabricating such source substrates. LED elements may be prepared for transfer by pick-n-place or other means to a bonding substrate. Anchor and release structures enable LED elements to be affixed and electrically coupled to a bonding substrate with conductive polymer. LED elements may be prepared for transfer to a bonding substrate with self-aligned LED electrode metallization structures enabling the elements to be affixed to a bonding substrate with an adhesive and electrically coupled with a self-aligned local interconnect metallization. After affixing the LED elements, material may be built-up around the LED elements and the display assembly separated from the bonding substrate.
    Type: Grant
    Filed: October 17, 2014
    Date of Patent: November 13, 2018
    Assignee: Intel Corporation
    Inventor: Peter L. Chang
  • Patent number: 10054737
    Abstract: Photonic components are placed on the processor package to bring the optical signal close to the processor die. The processor package includes a substrate to which the processor die is coupled, and which allows the processor die to connect to a printed circuit board. The processor package also includes transceiver logic, electrical-optical conversion circuits, and an optical coupler. The electrical-optical conversion circuits can include laser(s), modulator(s), and photodetector(s) to transmit and receive and optical signal. The coupler interfaces to a fiber that extends off the processor package. Multiple fibers can be brought to the processor package allowing for a scalable high-speed, high-bandwidth interconnection to the processor.
    Type: Grant
    Filed: November 15, 2016
    Date of Patent: August 21, 2018
    Assignee: INTEL CORPORATION
    Inventors: Mauro J Kobrinsky, Henning Braunisch, Shawna M. Liff, Peter L. Chang, Bruce A. Block, Johanna M. Swan
  • Publication number: 20180233536
    Abstract: Crystalline (micro) LED display assemblies, methods of fabricating such display assemblies, crystalline LED source substrates from which the (micro) LEDs may be transferred to the display assembly, and methods of fabricating such source substrates. LED elements may be prepared for transfer by pick-n-place or other means to a bonding substrate. Anchor and release structures enable LED elements to be affixed and electrically coupled to a bonding substrate with conductive polymer. LED elements may be prepared for transfer to a bonding substrate with self-aligned LED electrode metallization structures enabling the elements to be affixed to a bonding substrate with an adhesive and electrically coupled with a self-aligned local interconnect metallization. After affixing the LED elements, material may be built-up around the LED elements and the display assembly separated from the bonding substrate.
    Type: Application
    Filed: October 17, 2014
    Publication date: August 16, 2018
    Inventor: Peter L. Chang
  • Publication number: 20180097033
    Abstract: A micro-light emitting diode (LED) display panel and a method of forming the display panel, the micro-LED display panel having a monolithically grown micro-structure including a first color micro-LED that is a first color nanowire LED, and a second color micro-LED that is a second color nanowire LED.
    Type: Application
    Filed: September 30, 2016
    Publication date: April 5, 2018
    Inventors: Khaled Ahmed, Kunjal Parikh, Peter L. Chang
  • Patent number: 9922592
    Abstract: In one example, a method for controlling a display with a digital signal includes detecting a binary value from a timing controller, the binary value corresponding to a portion of an image to be displayed. The method can also include determining a previous binary value from the timing controller and calculating a difference between the binary value from the timing controller and the previous binary value from the timing controller. Furthermore, the method can include generating an encoded signal based on the difference and transmitting the encoded signal to a display panel.
    Type: Grant
    Filed: December 23, 2015
    Date of Patent: March 20, 2018
    Assignee: INTEL CORPORATION
    Inventors: Kunjal Parikh, Khaled Ahmed, Prakash K. Radhakrishnan, Peter L. Chang, Ravi Ranganathan
  • Publication number: 20170278733
    Abstract: Micro pick-and-bond heads, assembly methods, and device assemblies. In, embodiments, micro pick-and-bond heads transfer micro device elements, such as (micro) LEDs, en masse from a source substrate to a target substrate, such as a LED display substrate. Anchor and release structures on the source substrate enable device elements to be separated from a source substrate, while pressure sensitive adhesive (PSA) enables device elements to be temporarily affixed to pedestals of a micro pick-and-bond head. Once the device elements are permanently affixed to a target substrate, the PSA interface may be defeated through peeling and/or thermal decomposition of an interface layer.
    Type: Application
    Filed: October 17, 2014
    Publication date: September 28, 2017
    Inventors: Peter L. Chang, Chytra Pawashe, Michael C. Mayberry, Jia-Hung Tseng