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).
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Publication number: 20230350105Abstract: 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: ApplicationFiled: July 6, 2023Publication date: November 2, 2023Inventors: 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
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Patent number: 11774641Abstract: 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: GrantFiled: August 27, 2020Date of Patent: October 3, 2023Assignee: 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
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Patent number: 11688363Abstract: 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: GrantFiled: July 14, 2021Date of Patent: June 27, 2023Assignee: 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
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Patent number: 11626568Abstract: 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: GrantFiled: January 28, 2021Date of Patent: April 11, 2023Assignee: Apple Inc.Inventors: Jared S. Price, Mathew K. Mathai, Hitoshi Yamamoto, Martijn Kuik
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Publication number: 20220093059Abstract: 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: ApplicationFiled: July 14, 2021Publication date: March 24, 2022Inventors: 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
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Publication number: 20210072428Abstract: 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: ApplicationFiled: August 27, 2020Publication date: March 11, 2021Inventors: 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
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Patent number: 10461131Abstract: 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: GrantFiled: December 13, 2018Date of Patent: October 29, 2019Assignee: Apple Inc.Inventors: Jonathan S. Steckel, Mathew K. Mathai, Paul S. Drzaic, Hitoshi Yamamoto
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Publication number: 20190131356Abstract: 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: ApplicationFiled: December 13, 2018Publication date: May 2, 2019Inventors: Jonathan S. Steckel, Mathew K. Mathai, Paul S. Drzaic, Hitoshi Yamamoto
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Patent number: 10192932Abstract: 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: GrantFiled: August 23, 2016Date of Patent: January 29, 2019Assignee: Apple Inc.Inventors: Jonathan S. Steckel, Mathew K. Mathai, Paul S. Drzaic, Hitoshi Yamamoto
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Publication number: 20170221969Abstract: 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: ApplicationFiled: August 23, 2016Publication date: August 3, 2017Inventors: Jonathan S. Steckel, Mathew K. Mathai, Paul S. Drzaic, Hitoshi Yamamoto
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Patent number: 9166169Abstract: 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: GrantFiled: March 14, 2014Date of Patent: October 20, 2015Assignee: SOLVAY USA, INC.Inventors: Christopher T. Brown, Mathew K. Mathai, Venkataramanan Seshadri
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Publication number: 20140284573Abstract: 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: ApplicationFiled: March 14, 2014Publication date: September 25, 2014Applicant: PLEXTRONICS, INC.Inventors: Christopher T. BROWN, Mathew K. MATHAI, Venkataramanan SESHADRI
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Patent number: 8836221Abstract: 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: GrantFiled: September 19, 2012Date of Patent: September 16, 2014Assignee: Solvay USA, Inc.Inventors: Mark L. Storch, Mathew K. Mathai, Glenn Thompson, Joseph Greenberg
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Patent number: 8716706Abstract: 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: GrantFiled: January 29, 2013Date of Patent: May 6, 2014Assignee: Plextronics, Inc.Inventors: Christopher T. Brown, Mathew K. Mathai, Venkataramanan Seshadri
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Patent number: 8414304Abstract: 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: GrantFiled: August 18, 2009Date of Patent: April 9, 2013Assignee: Plextronics, Inc.Inventors: Mathew K. Mathai, Glenn Thompson, Mark L. Storch, Troy D. Hammond
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Patent number: 8399604Abstract: 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: GrantFiled: August 12, 2011Date of Patent: March 19, 2013Assignee: Plextronics, Inc.Inventors: Venkataramanan Seshadri, Brian E. Woodworth, Christopher Greco, Darin Laird, Mathew K. Mathai
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Patent number: 8288951Abstract: 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: GrantFiled: August 18, 2009Date of Patent: October 16, 2012Assignee: Plextronics, Inc.Inventors: Mark L. Storch, Mathew K. Mathai, Glenn Thompson, Joseph Greenberg
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Patent number: 8215787Abstract: 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: GrantFiled: August 18, 2009Date of Patent: July 10, 2012Assignee: Plextronics, Inc.Inventors: Mathew K. Mathai, Mark L. Storch, Glenn Thompson, Eli J. Scott, Lisa Pattison, Troy D. Hammond
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Patent number: 8173998Abstract: 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: GrantFiled: June 6, 2008Date of Patent: May 8, 2012Assignee: OSRAM Opto Semiconductors GmbHInventors: Vi-En Choong, Stelios A. Choulis, Mathew K. Mathai
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Publication number: 20120083070Abstract: 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: ApplicationFiled: December 9, 2011Publication date: April 5, 2012Inventors: Mathew K. Mathai, Christopher T. Brown, Venkataramanan Seshadri