Patents by Inventor Mathew K. Mathai

Mathew K. Mathai 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: 20230350105
    Abstract: A lenticular display may be formed with convex curvature. The lenticular display may have a lenticular lens film with lenticular lenses that extend across the length of the display. The lenticular lenses may be configured to enable stereoscopic viewing of the display. To enable more curvature in the display while ensuring satisfactory stereoscopic display performance, the display may have stereoscopic zones and non-stereoscopic zones. A central stereoscopic zone may be interposed between first and second non-stereoscopic zones. The non-stereoscopic zones may have more curvature than the stereoscopic zone. To prevent crosstalk within the lenticular display, a louver film may be incorporated into the display. The pixel array may have a diagonal layout and may be covered by vertically oriented lenticular lenses.
    Type: Application
    Filed: July 6, 2023
    Publication date: November 2, 2023
    Inventors: Yi-Pai Huang, Manjap Singh, Cheng-Ho Yu, ByoungSuk Kim, Yi Huang, Hitoshi Yamamoto, Mathew K. Mathai, Chieh-Wei Chen, Ping-Yen Chou, Donghee Nam, Chaohao Wang, Hao Chen
  • Patent number: 11774641
    Abstract: A lenticular display may be formed with convex curvature. The lenticular display may have a lenticular lens film with lenticular lenses that extend across the length of the display. The lenticular lenses may be configured to enable stereoscopic viewing of the display. To enable more curvature in the display while ensuring satisfactory stereoscopic display performance, the display may have stereoscopic zones and non-stereoscopic zones. A central stereoscopic zone may be interposed between first and second non-stereoscopic zones. The non-stereoscopic zones may have more curvature than the stereoscopic zone. To prevent crosstalk within the lenticular display, a louver film may be incorporated into the display. The pixel array may have a diagonal layout and may be covered by vertically oriented lenticular lenses.
    Type: Grant
    Filed: August 27, 2020
    Date of Patent: October 3, 2023
    Assignee: Apple Inc.
    Inventors: Yi-Pai Huang, Manjap Singh, Cheng-Ho Yu, ByoungSuk Kim, Yi Huang, Hitoshi Yamamoto, Mathew K. Mathai, Chieh-Wei Chen, Ping-Yen Chou, Donghee Nam, Chaohao Wang, Hao Chen
  • Patent number: 11688363
    Abstract: An electronic device may include an electronic display including display pixels to display an image based on compensated image data. The electronic display may also include a stressed reference pixel to exhibit burn-in related aging in response to one or more stress sessions and a non-stressed reference pixel configured to not undergo the one or more stress sessions. Additionally, the electronic device may include image processing circuitry to determine a panel-specific aging profile based on a comparison between one or more properties of the stressed reference pixel and the one or more properties of the non-stressed reference pixel. The image processing circuitry may also generate one or more gain maps based on the panel-specific aging profile and generate the compensated image data by applying the one or more gain maps to input image data.
    Type: Grant
    Filed: July 14, 2021
    Date of Patent: June 27, 2023
    Assignee: Apple Inc.
    Inventors: Maofeng Yang, Jiayi Jin, David A. Doyle, Yifan Zhang, Weijun Yao, Jiye Lee, Tae-Wook Koh, Mathew K. Mathai, Chuang Qian, Tsung-Ting Tsai, James P. Landry, Kiran S. Pillai, Injae Hwang, Yongjun Li
  • Patent number: 11626568
    Abstract: An organic light-emitting diode (OLED) display may have an array of organic light-emitting diode pixels that each have OLED layers interposed between a cathode and an anode. Voltage may be applied to the anode of each pixel to control the magnitude of emitted light. The conductivity of the OLED layers may allow leakage current to pass between neighboring anodes in the display. To reduce leakage current and the accompanying cross-talk, resistance of a laterally conductive OLED layer may be increased. The laterally conductive layer may include an organic host material, dopants, and a resistance-increasing additive. Another way to reduce leakage current is to apply bias voltages to the anodes of the display and/or expose the laterally conductive layer to ultraviolet light, causing dopants within the laterally conductive layer to degrade.
    Type: Grant
    Filed: January 28, 2021
    Date of Patent: April 11, 2023
    Assignee: Apple Inc.
    Inventors: Jared S. Price, Mathew K. Mathai, Hitoshi Yamamoto, Martijn Kuik
  • Publication number: 20220093059
    Abstract: An electronic device may include an electronic display including display pixels to display an image based on compensated image data. The electronic display may also include a stressed reference pixel to exhibit burn-in related aging in response to one or more stress sessions and a non-stressed reference pixel configured to not undergo the one or more stress sessions. Additionally, the electronic device may include image processing circuitry to determine a panel-specific aging profile based on a comparison between one or more properties of the stressed reference pixel and the one or more properties of the non-stressed reference pixel. The image processing circuitry may also generate one or more gain maps based on the panel-specific aging profile and generate the compensated image data by applying the one or more gain maps to input image data.
    Type: Application
    Filed: July 14, 2021
    Publication date: March 24, 2022
    Inventors: Maofeng Yang, Jiayi Jin, David A. Doyle, Yifan Zhang, Weijun Yao, Jiye Lee, Tae-Wook Koh, Mathew K. Mathai, Chuang Qian, Tsung-Ting Tsai, James P. Landry, Kiran S. Pillai, Injae Hwang, Yongjun Li
  • Publication number: 20210072428
    Abstract: A lenticular display may be formed with convex curvature. The lenticular display may have a lenticular lens film with lenticular lenses that extend across the length of the display. The lenticular lenses may be configured to enable stereoscopic viewing of the display. To enable more curvature in the display while ensuring satisfactory stereoscopic display performance, the display may have stereoscopic zones and non-stereoscopic zones. A central stereoscopic zone may be interposed between first and second non-stereoscopic zones. The non-stereoscopic zones may have more curvature than the stereoscopic zone. To prevent crosstalk within the lenticular display, a louver film may be incorporated into the display. The pixel array may have a diagonal layout and may be covered by vertically oriented lenticular lenses.
    Type: Application
    Filed: August 27, 2020
    Publication date: March 11, 2021
    Inventors: Yi-Pai Huang, Manjap Singh, Cheng-Ho Yu, ByoungSuk Kim, Yi Huang, Hitoshi Yamamoto, Mathew K. Mathai, Chieh-Wei Chen, Ping-Yen Chou, Donghee Nam, Chaohao Wang, Hao Chen
  • Patent number: 10461131
    Abstract: Displays including hybrid pixels including an OLED subpixel and QD-LED subpixel are described. In an embodiment, OLED and QD-LED stacks are integrated into the same pixel with multiple common layers shared by the OLED and QD-LED stacks.
    Type: Grant
    Filed: December 13, 2018
    Date of Patent: October 29, 2019
    Assignee: Apple Inc.
    Inventors: Jonathan S. Steckel, Mathew K. Mathai, Paul S. Drzaic, Hitoshi Yamamoto
  • Publication number: 20190131356
    Abstract: Displays including hybrid pixels including an OLED subpixel and QD-LED subpixel are described. In an embodiment, OLED and QD-LED stacks are integrated into the same pixel with multiple common layers shared by the OLED and QD-LED stacks.
    Type: Application
    Filed: December 13, 2018
    Publication date: May 2, 2019
    Inventors: Jonathan S. Steckel, Mathew K. Mathai, Paul S. Drzaic, Hitoshi Yamamoto
  • Patent number: 10192932
    Abstract: Displays including hybrid pixels including an OLED subpixel and QD-LED subpixel are described. In an embodiment, OLED and QD-LED stacks are integrated into the same pixel with multiple common layers shared by the OLED and QD-LED stacks.
    Type: Grant
    Filed: August 23, 2016
    Date of Patent: January 29, 2019
    Assignee: Apple Inc.
    Inventors: Jonathan S. Steckel, Mathew K. Mathai, Paul S. Drzaic, Hitoshi Yamamoto
  • Publication number: 20170221969
    Abstract: Displays including hybrid pixels including an OLED subpixel and QD-LED subpixel are described. In an embodiment, OLED and QD-LED stacks are integrated into the same pixel with multiple common layers shared by the OLED and QD-LED stacks.
    Type: Application
    Filed: August 23, 2016
    Publication date: August 3, 2017
    Inventors: Jonathan S. Steckel, Mathew K. Mathai, Paul S. Drzaic, Hitoshi Yamamoto
  • Patent number: 9166169
    Abstract: Compositions for use in hole transporting layers (HTLs) or hole injection layers (HILs) are provided, as well as methods of making the compositions and devices fabricated from the compositions. OLED devices can be made. The compositions comprise at least one conductive conjugated polymer, at least one semiconducting matrix component that is different from the conductive conjugated polymer, and an optional dopant, and are substantially free of an insulating matrix component.
    Type: Grant
    Filed: March 14, 2014
    Date of Patent: October 20, 2015
    Assignee: SOLVAY USA, INC.
    Inventors: Christopher T. Brown, Mathew K. Mathai, Venkataramanan Seshadri
  • Publication number: 20140284573
    Abstract: Compositions for use in hole transporting layers (HTLs) or hole injection layers (HILs) are provided, as well as methods of making the compositions and devices fabricated from the compositions. OLED devices can be made. The compositions comprise at least one conductive conjugated polymer, at least one semiconducting matrix component that is different from the conductive conjugated polymer, and an optional dopant, and are substantially free of an insulating matrix component.
    Type: Application
    Filed: March 14, 2014
    Publication date: September 25, 2014
    Applicant: PLEXTRONICS, INC.
    Inventors: Christopher T. BROWN, Mathew K. MATHAI, Venkataramanan SESHADRI
  • Patent number: 8836221
    Abstract: A lighting system includes a plurality of organic light emitting diode (OLED) devices. By selecting the plurality of OLED devices, or by selectively controlling the plurality of OLED devices, the color characteristics of the lighting system can be tuned. The lifetime of the lighting system can be improved.
    Type: Grant
    Filed: September 19, 2012
    Date of Patent: September 16, 2014
    Assignee: Solvay USA, Inc.
    Inventors: Mark L. Storch, Mathew K. Mathai, Glenn Thompson, Joseph Greenberg
  • Patent number: 8716706
    Abstract: Compositions for use in hole transporting layers (HTLs) or hole injection layers (HILs) are provided, as well as methods of making the compositions and devices fabricated from the compositions. OLED devices can be made. The compositions comprise at least one conductive conjugated polymer, at least one semiconducting matrix component that is different from the conductive conjugated polymer, and an optional dopant, and are substantially free of an insulating matrix component.
    Type: Grant
    Filed: January 29, 2013
    Date of Patent: May 6, 2014
    Assignee: Plextronics, Inc.
    Inventors: Christopher T. Brown, Mathew K. Mathai, Venkataramanan Seshadri
  • Patent number: 8414304
    Abstract: An organic light emitting diode (OLED) device includes a substrate, an anode, a cathode, an active region including an organic material, wherein the active region is electrically coupled to the anode and the cathode, at least one coupler configured to electrically couple at least one of the anode or the cathode to a power supply, and an encapsulation that isolates the active region from an ambient environment. A lighting system can be made including a plurality of OLED devices. A lighting system can be assembled using the OLED devices from a kit. The OLED devices may be polymer light emitting diode (PLED) devices or small molecule light emitting diode (SMOLED) devices. The OLED devices can use regio-regular poly-thiophene.
    Type: Grant
    Filed: August 18, 2009
    Date of Patent: April 9, 2013
    Assignee: Plextronics, Inc.
    Inventors: Mathew K. Mathai, Glenn Thompson, Mark L. Storch, Troy D. Hammond
  • Patent number: 8399604
    Abstract: Conducting polymer systems for hole injection or transport layer applications including a composition comprising: a water soluble or water dispersible regioregular polythiophene comprising (i) at least one organic substituent, and (ii) at least one sulfonate substituent comprising sulfonate sulfur bonding directly to the polythiophene backbone. The polythiophene can be water soluble, water dispersible, or water swellable. They can be self-doped. The organic substituent can be an alkoxy substituent, or an alkyl substituent. OLED, PLED, SMOLED, PV, and ESD applications can be used.
    Type: Grant
    Filed: August 12, 2011
    Date of Patent: March 19, 2013
    Assignee: Plextronics, Inc.
    Inventors: Venkataramanan Seshadri, Brian E. Woodworth, Christopher Greco, Darin Laird, Mathew K. Mathai
  • Patent number: 8288951
    Abstract: A lighting system includes a plurality of organic light emitting diode (OLED) devices. By selecting the plurality of OLED devices, or by selectively controlling the plurality of OLED devices, the color characteristics of the lighting system can be tuned. The lifetime of the lighting system can be improved.
    Type: Grant
    Filed: August 18, 2009
    Date of Patent: October 16, 2012
    Assignee: Plextronics, Inc.
    Inventors: Mark L. Storch, Mathew K. Mathai, Glenn Thompson, Joseph Greenberg
  • Patent number: 8215787
    Abstract: A plurality of organic light emitting diode (OLED) devices can be spatially distributed to form various lighting systems and luminaires. The lighting systems can be configured to readily replace conventional light bulbs or tubular fluorescent lamps. A networked lighting system including a plurality of OLED devices can have a variable light field based on a feedback.
    Type: Grant
    Filed: August 18, 2009
    Date of Patent: July 10, 2012
    Assignee: Plextronics, Inc.
    Inventors: Mathew K. Mathai, Mark L. Storch, Glenn Thompson, Eli J. Scott, Lisa Pattison, Troy D. Hammond
  • Patent number: 8173998
    Abstract: A radiation emitting device comprising a first electrode, which emits first charge carriers having a first charge during operation, a first charge carrier transporting layer, which comprises a fluorescent substance, a second charge carrier transporting layer, which contains a phosphorescent substance, and a second electrode, which emits second charge carriers having a second charge during operation, wherein during operation the second charge carrier transporting layer is largely free of first charge carriers.
    Type: Grant
    Filed: June 6, 2008
    Date of Patent: May 8, 2012
    Assignee: OSRAM Opto Semiconductors GmbH
    Inventors: Vi-En Choong, Stelios A. Choulis, Mathew K. Mathai
  • Publication number: 20120083070
    Abstract: Compositions for use in hole transporting layers (HTLs) or hole injection layers (HILs) are provided, as well as methods of making the compositions and devices fabricated from the compositions. OLED devices can be made. The compositions comprise at least one conductive conjugated polymer, at least one semiconducting matrix component that is different from the conductive conjugated polymer, and an optional dopant, and are substantially free of an insulating matrix component.
    Type: Application
    Filed: December 9, 2011
    Publication date: April 5, 2012
    Inventors: Mathew K. Mathai, Christopher T. Brown, Venkataramanan Seshadri