Patents by Inventor Gangok Lee
Gangok Lee 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).
-
Patent number: 11899241Abstract: Disclosed is an Augmented Reality (AR) optical waveguide. The AR optical waveguide includes a transparent substrate including a user proximate surface and a user distal surface. The AR optical waveguide also includes a slant etched diffractive grating included on the user distal surface of the transparent substrate. The slant etched diffractive grating includes a refractive index of greater than or equal to 2.0.Type: GrantFiled: March 4, 2021Date of Patent: February 13, 2024Assignee: Huawei Technologies Co., Ltd.Inventors: Gangok Lee, Zhiqiang Liu, Wei Zhou, Akash Arora, Angus Wu
-
Publication number: 20220026722Abstract: A near-eye display (NED), comprising a frame comprising an outer lens, a micro-display panel coupled to the frame and comprising a processor configured to process content for display to a user wearing the NED, an augmented reality (AR) lens comprising a main prism lens, wherein the outer lens comprises at least one of a display corrector lens or a see-through corrector lens.Type: ApplicationFiled: October 8, 2021Publication date: January 27, 2022Inventors: Zhiqiang Liu, Akash Arora, Jie Dai, Angus Wu, Jiang Li, Peng Zhang, Gangok Lee
-
Publication number: 20210191040Abstract: Disclosed is an Augmented Reality (AR) optical waveguide. The AR optical waveguide includes a transparent substrate including a user proximate surface and a user distal surface. The AR optical waveguide also includes a slant etched diffractive grating included on the user distal surface of the transparent substrate. The slant etched diffractive grating includes a refractive index of greater than or equal to 2.0.Type: ApplicationFiled: March 4, 2021Publication date: June 24, 2021Inventors: Gangok Lee, Zhiqiang Liu, Wei Zhou, Akash Arora, Angus Wu
-
Publication number: 20210132384Abstract: A near-eye optical element includes light sources arranged with an illumination layer. The light sources are angled to direct light from the light sources to illuminate an ocular region.Type: ApplicationFiled: March 20, 2020Publication date: May 6, 2021Inventors: Christopher Yuan-Ting Liao, Qi Zhang, Kurt Allen Jenkins, Karol Constantine Hatzilias, Robin Sharma, Alexander Sohn, Silvio Grespan, Gangok Lee
-
Patent number: 10989923Abstract: A near eye display includes a main freeform prism lens and a micro-display corrector lens, where the main freeform prism lens includes a first freeform surface, a second freeform surface, and a third freeform surface, the first freeform surface refracting a light from a micro-display into a body of the main freeform prism lens, and the main freeform prism lens having an exit pupil diameter greater than 12 millimeter (mm), and a lateral color aberration of less than 4 micrometer (um)) across a diagonal field of view (FOV), where the micro-display corrector lens is positioned between the main freeform prism lens and the micro-display, the micro-display corrector lens including a first corrector lens surface and a second corrector lens surface, and each surface of the main freeform prism lens and the micro-display corrector lens comprises a surface sag.Type: GrantFiled: June 13, 2018Date of Patent: April 27, 2021Assignee: Futurewei Technologies, Inc.Inventors: Akash Arora, Mingwei Hsu, Gangok Lee, Zhiqiang Liu, Angus Wu, Wei Zhou
-
Patent number: 10670905Abstract: Described are examples of display devices including a display panel comprised of a transparent layer, a color filter layer adjacent to the transparent layer, wherein the color filter layer comprises a matrix of colored light filters, and a black matrix layer comprising a base portion disposed on the transparent layer between two of the different colored light filters and an extension portion that extends into the color filter layer between the two colored light filters to block a light path that may otherwise traverse both of the two colored light filters. The base portion and the extension portion differ in a height dimension that is substantially perpendicular to the transparent layer.Type: GrantFiled: February 10, 2017Date of Patent: June 2, 2020Assignee: Microsoft Techonology Licensing, LLCInventors: Minhyuk Choi, Gangok Lee, Jignesh V Gandhi, Camilo Leon, Andrew N Cady, Rajesh Dighde
-
Patent number: 10553177Abstract: The present disclosure provides devices and techniques for dynamically adjusting the bias voltage (V) levels (e.g., low level gate voltage (VGL) and high level gate voltage (VGH)) for display screens made with thin-film transistor (TFT) technology based on a display run time. Thus, as the positive bias temperature stress for the TFTs increases over the course of the display lifetime, features of the present disclosure adjust the bias voltage levels to maintain operation margin (e.g., the ratio between the high level gate voltage (VGH) value and the voltage value which the display can maintain with normal operation). By dynamically adjusting the bias voltage levels, the TFT displays of the present disclosure consume lower power than their conventional counterparts and improve the lifetime of the display itself.Type: GrantFiled: February 6, 2019Date of Patent: February 4, 2020Assignee: MICROSOFT TECHNOLOGY LICENSING, LLCInventors: Minhyuk Choi, Ying Zheng, Matthew Morris, Andrew Cady, Jerry Michael Hill, Gangok Lee, Rajesh Dighde
-
Publication number: 20190384061Abstract: A near eye display includes a main freeform prism lens and a micro-display corrector lens, where the main freeform prism lens includes a first freeform surface, a second freeform surface, and a third freeform surface, the first freeform surface refracting a light from a micro-display into a body of the main freeform prism lens, and the main freeform prism lens having an exit pupil diameter greater than 12 millimeter (mm), and a lateral color aberration of less than 4 micrometer (um)) across a diagonal field of view (FOV), where the micro-display corrector lens is positioned between the main freeform prism lens and the micro-display, the micro-display corrector lens including a first corrector lens surface and a second corrector lens surface, and each surface of the main freeform prism lens and the micro-display corrector lens comprises a surface sag.Type: ApplicationFiled: June 13, 2018Publication date: December 19, 2019Inventors: Akash Arora, Mingwei Hsu, Gangok Lee, Zhiqiang Liu, Angus Wu, Wei Zhou
-
Patent number: 10359627Abstract: An apparatus for use in replicating an image associated with an input-pupil to an output-pupil includes a planar optical waveguide including a bulk-substrate, and also including an input-coupler, an intermediate-component and an output-coupler. The input-coupler couples light corresponding to the image into the bulk-substrate and towards the intermediate-component. The intermediate-component performs horizontal or vertical pupil expansion and directs the light corresponding to the image towards the output-coupler. The output-coupler performs the other one of horizontal or vertical pupil expansion and couples light corresponding to the image, which travels from the input-coupler to the output-coupler, out of the waveguide. The apparatus further includes an adjacent planar optical component to provide a more uniform intensity distribution compared to if the adjacent planar optical component were absent.Type: GrantFiled: November 10, 2015Date of Patent: July 23, 2019Assignee: Microsoft Technology Licensing, LLCInventors: R. Andrew Wall, Scott Woltman, Steven John Robbins, Xinye Lou, Gangok Lee, Yarn Chee Poon, Tuomas Vallius, Pasi Kostamo, Tapani Levola, Yijing Fu
-
Publication number: 20190172409Abstract: The present disclosure provides devices and techniques for dynamically adjusting the bias voltage (V) levels (e.g., low level gate voltage (VGL) and high level gate voltage (VGH)) for display screens made with thin-film transistor (TFT) technology based on a display run time. Thus, as the positive bias temperature stress for the TFTs increases over the course of the display lifetime, features of the present disclosure adjust the bias voltage levels to maintain operation margin (e.g., the ratio between the high level gate voltage (VGH) value and the voltage value which the display can maintain with normal operation).Type: ApplicationFiled: February 6, 2019Publication date: June 6, 2019Inventors: Minhyuk CHOI, Ying ZHENG, Matthew Morris, Andrew CADY, Jerry Michael HILL, Gangok LEE, Rajesh DIGHDE
-
Patent number: 10235962Abstract: The present disclosure provides devices and techniques for dynamically adjusting the bias voltage (V) levels (e.g., low level gate voltage (VGL) and high level gate voltage (VGH)) for display screens made with thin-film transistor (TFT) technology based on a display run time. Thus, as the positive bias temperature stress for the TFTs increases over the course of the display lifetime, features of the present disclosure adjust the bias voltage levels to maintain operation margin (e.g., the ratio between the high level gate voltage (VGH) value and the voltage value which the display can maintain with normal operation). By dynamically adjusting the bias voltage levels, the TFT displays of the present disclosure consume lower power than their conventional counterparts and improve the lifetime of the display itself.Type: GrantFiled: December 23, 2016Date of Patent: March 19, 2019Assignee: Microsoft Technology Licensing, LLCInventors: Minhyuk Choi, Ying Zheng, Matthew Morris, Andrew Cady, Jerry Michael Hill, Gangok Lee, Rajesh Dighde
-
Publication number: 20180231827Abstract: Described are examples of display devices including a display panel comprised of a transparent layer, a color filter layer adjacent to the transparent layer, wherein the color filter layer comprises a matrix of colored light filters, and a black matrix layer comprising a base portion disposed on the transparent layer between two of the different colored light filters and an extension portion that extends into the color filter layer between the two colored light filters to block a light path that may otherwise traverse both of the two colored light filters. The base portion and the extension portion differ in a height dimension that is substantially perpendicular to the transparent layer.Type: ApplicationFiled: February 10, 2017Publication date: August 16, 2018Inventors: Minhyuk CHOI, Gangok LEE, Jignesh V. Gandhi, Camilo LEON, Andrew N. CADY, Rajesh DIGHDE
-
Publication number: 20180182349Abstract: The present disclosure provides devices and techniques for dynamically adjusting the bias voltage (V) levels (e.g., low level gate voltage (VGL) and high level gate voltage (VGH)) for display screens made with thin-film transistor (TFT) technology based on a display run time. Thus, as the positive bias temperature stress for the TFTs increases over the course of the display lifetime, features of the present disclosure adjust the bias voltage levels to maintain operation margin (e.g., the ratio between the high level gate voltage (VGH) value and the voltage value which the display can maintain with normal operation). By dynamically adjusting the bias voltage levels, the TFT displays of the present disclosure consume lower power than their conventional counterparts and improve the lifetime of the display itself.Type: ApplicationFiled: December 23, 2016Publication date: June 28, 2018Inventors: Minhyuk CHOI, Ying ZHENG, Matthew Morris, Andrew CADY, Jerry Michael HILL, Gangok LEE, Rajesh Dighde
-
Patent number: 9720237Abstract: An optical device comprises a number of waveguides, e.g., color plates, that are individually formed to couple a corresponding color output of a micro-display engine and project an image into a human vision system. Some configurations include stacked structures for suppressing a predetermined wavelength range a corresponding to a wavelength range emitted from a waveguide. Techniques, devices, and systems disclosed herein can mitigate cross coupling that occurs between the waveguides to provide enhanced MTF values over devices that do not include the stacked structures. Individual optical devices configured to suppress a predetermined wavelength range are also provided.Type: GrantFiled: January 27, 2016Date of Patent: August 1, 2017Assignee: MICROSOFT TECHNOLOGY LICENSING, LLC.Inventors: Yijing Fu, Angus Wu, Gangok Lee, Mingwei Hsu
-
Publication number: 20170212348Abstract: An optical device comprises a number of waveguides, e.g., color plates, that are individually formed to couple a corresponding color output of a micro-display engine and project an image into a human vision system. Some configurations include stacked structures for suppressing a predetermined wavelength range a corresponding to a wavelength range emitted from a waveguide. Techniques, devices, and systems disclosed herein can mitigate cross coupling that occurs between the waveguides to provide enhanced MTF values over devices that do not include the stacked structures. Individual optical devices configured to suppress a predetermined wavelength range are also provided.Type: ApplicationFiled: January 27, 2016Publication date: July 27, 2017Inventors: Yijing Fu, Angus Wu, Gangok Lee, Mingwei Hsu
-
Publication number: 20170131545Abstract: An apparatus for use in replicating an image associated with an input-pupil to an output-pupil includes a planar optical waveguide including a bulk-substrate, and also including an input-coupler, an intermediate-component and an output-coupler. The input-coupler couples light corresponding to the image into the bulk-substrate and towards the intermediate-component. The intermediate-component performs horizontal or vertical pupil expansion and directs the light corresponding to the image towards the output-coupler. The output-coupler performs the other one of horizontal or vertical pupil expansion and couples light corresponding to the image, which travels from the input-coupler to the output-coupler, out of the waveguide. The apparatus further includes an adjacent planar optical component to provide a more uniform intensity distribution compared to if the adjacent planar optical component were absent.Type: ApplicationFiled: November 10, 2015Publication date: May 11, 2017Inventors: R. Andrew Wall, Scott Woltman, Steven John Robbins, Xinye Lou, Gangok Lee, Yarn Chee Poon, Tuomas Vallius, Pasi Kostamo, Tapani Levola, Yijing Fu
-
Patent number: 7741773Abstract: An improved smoothing layer for use with a thick film dielectric layer, and improved composite thick film dielectric structure is provided. The smoothing layer is a piezoelectric or ferroelectric material that has a reduced amount of defects. The smoothing layer is formed by the addition of surfactant to a sol gel or metal organic solution of organo metallic precursor compounds. The composite thick film dielectric structure comprises a thick film dielectric composition having a PZT smoothing layer thereon, the smoothing layer being made by a process incorporating surfactant. Both the smoothing layer and the composite thick film dielectric structure are for use in electroluminescent displays.Type: GrantFiled: April 6, 2005Date of Patent: June 22, 2010Assignee: iFire IP CorporationInventors: Kifah Kamil Mahmood, Gangok Lee, Vincent Joseph Alfred Pugliese
-
Publication number: 20050255708Abstract: An improved smoothing layer for use with a thick film dielectric layer, and improved composite thick film dielectric structure is provided. The smoothing layer is a piezoelectric or ferroelectric material that has a reduced amount of defects. The smoothing layer is formed by the addition of surfactant to a sol gel or metal organic solution of organo metallic precursor compounds. The composite thick film dielectric structure comprises a thick film dielectric composition having a PZT smoothing layer thereon, the smoothing layer being made by a process incorporating surfactant. Both the smoothing layer and the composite thick film dielectric structure are for use in electroluminescent displays.Type: ApplicationFiled: April 6, 2005Publication date: November 17, 2005Inventors: Kifah Mahmood, Gangok Lee, Vincent Pugliese