Patents by Inventor Thomas X. Wu
Thomas X. Wu 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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Patent number: 8330911Abstract: A circular polarizer comprising a single linear polarizer producing a linear state of polarization and at least one phase retardation film layered with the single linear polarizer. In a first embodiment, the at least one phase retardation film includes at least one uniaxial A-plate phase retardation film and at least one uniaxial C-plate phase retardation film. In a second embodiment of the invention, the circular polarizer includes a linear polarizer and at least one biaxial phase retardation film layered with the linear polarizer. In another example of the circular polarize of the second embodiment, at least one uniaxial A-plate phase retardation film and/or at least one uniaxial C-plate phase retardation film is also layer with the linear polarize and the biaxial phase retardation film.Type: GrantFiled: April 18, 2008Date of Patent: December 11, 2012Assignee: University of Central Florida Research Foundation, Inc.Inventors: Qi Hong, Ruibo Lu, Xinyu Zhu, Thomas X. Wu, Shin-Tson Wu
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Patent number: 7942646Abstract: A high speed centrifugal compressor for compressing fluids includes a permanent magnet synchronous motor (PMSM) having a hollow shaft, the being supported on its ends by ball bearing supports. A permanent magnet core is embedded inside the shaft. A stator with a winding is located radially outward of the shaft. The PMSM includes a rotor including at least one impeller secured to the shaft or integrated with the shaft as a single piece. The rotor is a high rigidity rotor providing a bending mode speed of at least 100,000 RPM which advantageously permits implementation of relatively low-cost ball bearing supports.Type: GrantFiled: May 22, 2007Date of Patent: May 17, 2011Assignee: University of Central Florida Foundation, IncInventors: Lei Zhou, Liping Zheng, Louis Chow, Jayanta S. Kapat, Thomas X. Wu, Krishna M. Kota, Xiaoyi Li, Dipjyoti Acharya
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Patent number: 7804571Abstract: Structures, devices, systems and methods of using multi-domain vertical alignment liquid crystal displays with high transmittance, high contrast ratio and wide view angle in which at least one of the electrode substrates has circular or ring-shaped openings, such as holes or slits. Circular or ring-shaped patterns for openings and electrodes have not been used in the construction of a liquid crystal display. The new multi-domain vertical alignment (MDVA) liquid crystal display is particularly suitable for liquid crystal display television and computer monitor applications.Type: GrantFiled: October 3, 2008Date of Patent: September 28, 2010Assignees: University of Central Florida Research Foundation, Inc., Toppoly Optoelectronics Corp.Inventors: Ruibo Lu, Qi Hong, Shin-Tson Wu, Thomas X. Wu
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Patent number: 7688409Abstract: A novel transflective liquid crystal display (LCD) is provided with a multilayer dielectric film transflector. The dielectric transflector is composed of alternating high and low refractive index dielectric material layers deposited directly on the inner side of the LCD substrate to avoid parallax. The transmittance of the dielectric transflector can vary from approximately 5% to approximately 95% by simply adjusting the individual dielectric layer thickness and the arrangement of layers. The thickness of the 10-layer film is approximately 700 nm, which does not affect the voltage drop on the LC. Two structures of the dielectric film using different positions of the materials of construction are provided and demonstrated. Such a transflective LCD exhibits outstanding features, such as, robust dielectric film, single cell gap, no parallax, and a simple fabrication process.Type: GrantFiled: December 7, 2006Date of Patent: March 30, 2010Assignee: University of Central Florida Research Foundation, Inc.Inventors: Shin-Tson Wu, Qiong-Hua Wang, Thomas X. Wu, Xinyu Zhu, Zhibing Ge
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Publication number: 20090066889Abstract: Structures, devices, systems and methods of using multi-domain vertical alignment liquid crystal displays with high transmittance, high contrast ratio and wide view angle in which at least one of the electrode substrates has circular or ring-shaped openings, such as holes or slits. Circular or ring-shaped patterns for openings and electrodes have not been used in the construction of a liquid crystal display. The new multi-domain vertical alignment (MDVA) liquid crystal display is particularly suitable for liquid crystal display television and computer monitor applications.Type: ApplicationFiled: October 3, 2008Publication date: March 12, 2009Inventors: Ruibo Lu, Qi Hong, Shin-Tson Wu, Thomas X. Wu
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Patent number: 7466385Abstract: Structures, devices, systems and methods of using multi-domain vertical alignment liquid crystal displays with high transmittance, high contrast ratio and wide view angle in which at least one of the electrode substrates has circular or ring-shaped openings, such as holes or slits. Circular or ring-shaped patterns for openings and electrodes have not been used in the construction of a liquid crystal display. The new multi-domain vertical alignment (MDVA) liquid crystal display is particularly suitable for liquid crystal display television and computer monitor applications.Type: GrantFiled: December 23, 2004Date of Patent: December 16, 2008Assignees: University of Central Florida Research Foundation, Inc., Toppoly Optoelectronics Corp.Inventors: Ruibo Lu, Qi Hong, Shin-Tson Wu, Thomas X. Wu
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Publication number: 20080239490Abstract: A circular polarizer comprising a single linear polarizer producing a linear state of polarization and at least one phase retardation film layered with the single linear polarizer. In a first embodiment, the at least one phase retardation film includes at least one uniaxial A-plate phase retardation film and at least one uniaxial C-plate phase retardation film. In a second embodiment of the invention, the circular polarizer includes a linear polarizer and at least one biaxial phase retardation film layered with the linear polarizer. In another example of the circular polarize of the second embodiment, at least one uniaxial A-plate phase retardation film and/or at least one uniaxial C-plate phase retardation film is also layer with the linear polarize and the biaxial phase retardation film.Type: ApplicationFiled: April 18, 2008Publication date: October 2, 2008Inventors: Qi Hong, Ruibo Lu, Xinyu Zhu, Thomas X. Wu, Shin-Tson Wu
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Publication number: 20070269323Abstract: A high speed centrifugal compressor for compressing fluids includes a permanent magnet synchronous motor (PMSM) having a hollow shaft, the being supported on its ends by ball bearing comprising supports. A permanent magnet core is embedded inside the shaft. A stator with a winding is located radially outward of the shaft. The PMSM includes a rotor including at least one impeller secured to the shaft or integrated with the shaft as a single piece. The rotor is a high rigidity rotor providing a bending mode speed of at least 100,000 RPM which advantageously permits implementation of relatively low-cost ball bearing comprising supports.Type: ApplicationFiled: May 22, 2007Publication date: November 22, 2007Inventors: Lei Zhou, Liping Zheng, Louis Chow, Jayanta S. Kapat, Thomas X. Wu, Krishna M. Kota, Xiaoyi Li, Dipjyoti Acharya
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Flower-shaped vertical alignment liquid crystal displays with wide view angle and fast response time
Patent number: 7295274Abstract: A novel vertical alignment liquid crystal display with a structure having a flower-shaped vertical alignment (FVA) has the properties of fast response, high contrast ratio and a wide view angle. The method for making the device and structure of the FVA comprises the arrangement of: a first substrate with a protrusion shaped electrode as the pixel electrode; and a second substrate as the common electrode; aligning layers formed on said first and second substrates providing liquid crystal vertical alignment; liquid crystal materials filling a space between said first and second substrates as a liquid crystal cell; a linear polarizer and wide band quarter-wave film forming a circular polarizer; and, said circular polarizer disposed on exterior surfaces of said liquid crystal cell. When voltage is applied to the device, the liquid crystal (LC) director distribution looks like a flower blossom.Type: GrantFiled: February 24, 2004Date of Patent: November 13, 2007Assignees: University of Central Florida Research Foundation, Inc., AU Optronics Corp.Inventors: Shin-Tson Wu, Ruibo Lu, Qi Hong, Thomas X. Wu -
Patent number: 7230663Abstract: A novel transflective liquid crystal display (LCD) is provided with a multilayer dielectric film transflector. The dielectric transflector is composed of alternating high and low refractive index dielectric material layers deposited directly on the inner side of the LCD substrate to avoid parallax. The transmittance of the dielectric transflector can vary from approximately 5% to approximately 95% by simply adjusting the individual dielectric layer thickness and the arrangement of layers. The thickness of the 10-layer film is approximately 700 nm, which does not affect the voltage drop on the LC. Two structures of the dielectric film using different positions of the materials of construction are provided and demonstrated. Such a transflective LCD exhibits outstanding features, such as, robust dielectric film, single cell gap, no parallax, and a simple fabrication process.Type: GrantFiled: August 13, 2004Date of Patent: June 12, 2007Assignee: Research Foundation of The University of Central FloridaInventors: Shin-Tson Wu, Qiong-Hua Wang, Thomas X. Wu, Xinyu Zhu, Zhibing Ge
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Patent number: 7027118Abstract: A device and method for making full color cholesteric displays such as a narrow band and a broad band cholesteric display using high birefringence LC materials with color filtering processes. The invention includes positioning slant reflector(s) in the transmissive portion of the display to reflect backlight into reflection pixels. The LCD can display the same color images in both reflective and transmissive modes, maintain good readability in any ambient, has low power consumption, high brightness, full color capability and has a fabrication process that is compatible with conventional LCD fabrication.Type: GrantFiled: July 23, 2003Date of Patent: April 11, 2006Assignees: University of Central Florida Research Foundation, Inc., Toppoly Optoelectronics CorpInventors: Shin-Tson Wu, Yi-Pai Huang, Xinyu Zhu, Hongwen Ren, Thomas X. Wu
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Patent number: 7009670Abstract: The achromatic quarter-wave film of this invention has a laminated twisted nematic liquid crystal film sandwiched between two uniaxial polymer films to provide a optical component which converts linearly polarized light into circularly polarized radiation which upon reflection back through said optical component is blocked from outward radiation by the polarizer for the initial incident wide spectrum light thus realizing wider broadband width for full color flat panel displays.Type: GrantFiled: March 26, 2004Date of Patent: March 7, 2006Assignee: Research Foundation of the University of Central Florida, Inc.Inventors: Yuhua Huang, Thomas X. Wu, Shin-Tson Wu
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Patent number: 6987549Abstract: Transmissive liquid crystal displays having response time that can be approximately 2 to approximately 3 times faster than conventional displays. The displays adjust the rubbing angles to above approximately 20 degrees and preferably between approximately 30 and approximately 40 degrees. The displays have fast response times, enhanced brightness and increased gray scale linearity while maintaining wide viewing angle.Type: GrantFiled: August 13, 2003Date of Patent: January 17, 2006Assignee: University of Central Florida Research Foundation, IncInventors: Shin-Tson Wu, Thomas X. Wu, Qi Hong, Xinyu Zhu, Ruibo Lu
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Publication number: 20040183974Abstract: Transmissive liquid crystal displays having response time that can be approximately 2 to approximately 3 times faster than conventional displays. The displays adjust the rubbing angles to above approximately 20 degrees and preferably between approximately 30 and approximately 40 degrees. The displays have fast response times, enhanced brightness and increased gray scale linearity while maintaining wide viewing angle.Type: ApplicationFiled: August 13, 2003Publication date: September 23, 2004Inventors: Shin-Tson Wu, Thomas X. Wu, Qi Hong, Xinyu Zhu, Ruibo Lu