Patents by Inventor Qiong-Hua Wang

Qiong-Hua Wang 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: 7855768
    Abstract: A transflective liquid crystal display (TLCD) using separate transmissive (T) and reflective (R) cells in which two liquid crystal materials with different birefringence changes are used. The birefringence change of the R region is half of the birefringence change of the T region. In this case, a single cell gap is possible and identical transmittance and reflectance for R and T is obtained. It is applicable to various reflective LC modes, and the fabrication methods are simple.
    Type: Grant
    Filed: January 11, 2008
    Date of Patent: December 21, 2010
    Assignees: University of Central Florida Research Foundation, Inc., Toppoly Optoelectronics Corp.
    Inventors: Qiong-Hua Wang, Shin-Tson Wu, Qi Hong, Yung-Hsun Wu
  • Patent number: 7688409
    Abstract: 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: Grant
    Filed: December 7, 2006
    Date of Patent: March 30, 2010
    Assignee: University of Central Florida Research Foundation, Inc.
    Inventors: Shin-Tson Wu, Qiong-Hua Wang, Thomas X. Wu, Xinyu Zhu, Zhibing Ge
  • Publication number: 20080151160
    Abstract: A transflective liquid crystal display (TLCD) using separate transmissive (T) and reflective (R) cells in which two liquid crystal materials with different birefringence changes are used. The birefringence change of the R region is half of the birefringence change of the T region. In this case, a single cell gap is possible and identical transmittance and reflectance for R and T is obtained. It is applicable to various reflective LC modes, and the fabrication methods are simple.
    Type: Application
    Filed: January 11, 2008
    Publication date: June 26, 2008
    Inventors: Qiong-Hua Wang, Shin-Tson Wu, Qi Hong, Yung-Hsun Wu
  • Patent number: 7359015
    Abstract: A transflective liquid crystal display (TLCD) using separate transmissive (T) and reflective (R) cells in which two liquid crystal materials with different birefringence changes are used. The birefringence change of the R region is half of the birefringence change of the T region. In this case, a single cell gap is possible and identical transmittance and reflectance for R and T is obtained. It is applicable to various reflective LC modes, and the fabrication methods are simple.
    Type: Grant
    Filed: August 10, 2004
    Date of Patent: April 15, 2008
    Assignee: Research Foundation of the University of Central Florida
    Inventors: Qiong-Hua Wang, Shin-Tson Wu, Qi Hong, Yung-Hsun Wu
  • Patent number: 7286198
    Abstract: A transflective liquid crystal display with a single LC cell gap. Each of a plurality of pixel regions comprises a reflective region and a transmissive region. A liquid crystal cell wall structure between the upper and lower substrates creates a first channel at reflective region and a second channel at transmissive region. A first liquid crystal layer is filled into the first channel of the reflective region. A second liquid crystal layer is filled into the second channel of the transmissive region.
    Type: Grant
    Filed: December 22, 2004
    Date of Patent: October 23, 2007
    Assignee: TPO Displays Corp.
    Inventors: Qiong-Hua Wang, Shin-Tson Wu, Qi Hong, Yung-Hsun Wu
  • Patent number: 7230663
    Abstract: 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: Grant
    Filed: August 13, 2004
    Date of Patent: June 12, 2007
    Assignee: Research Foundation of The University of Central Florida
    Inventors: Shin-Tson Wu, Qiong-Hua Wang, Thomas X. Wu, Xinyu Zhu, Zhibing Ge
  • Publication number: 20070103628
    Abstract: 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: Application
    Filed: December 7, 2006
    Publication date: May 10, 2007
    Inventors: Shin-Tson Wu, Qiong-Hua Wang, Thomas Wu, Xinyu Zhu, Zhibing Ge
  • Publication number: 20050151902
    Abstract: A transflective liquid crystal display with a single LC cell gap. Each of a plurality of pixel regions comprises a reflective region and a transmissive region. A liquid crystal cell wall structure between the upper and lower substrates creates a first channel at reflective region and a second channel at transmissive region. A first liquid crystal layer is filled into the first channel of the reflective region. A second liquid crystal layer is filled into the second channel of the transmissive region.
    Type: Application
    Filed: December 22, 2004
    Publication date: July 14, 2005
    Inventors: Qiong-Hua Wang, Shin-Tson Wu, Qi Hong, Yung-Hsun Wu