Patents by Inventor Huai-Hsuan Tsai

Huai-Hsuan Tsai 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: 7598023
    Abstract: A process for fabricating a micro-display is provided. First, a wafer having a driving circuit thereon is provided. Then, a metallic reflective layer is formed on the wafer. Thereafter, an anti-reflection layer and a patterned photoresist layer are sequentially formed on the metallic reflective layer. Using the patterned photoresist layer as an etching mask, the anti-reflection layer and the metallic reflective layer are etched to form a trench pattern that exposes the surface of the wafer. After that, the patterned photoresist layer is removed. A dielectric layer is formed to cover the anti-reflection layer and fill the trench pattern. Then, a portion of the dielectric layer and the anti-reflection layer are removed to expose the surface of the metallic reflective layer.
    Type: Grant
    Filed: September 28, 2005
    Date of Patent: October 6, 2009
    Assignee: United Microelectronics Corp.
    Inventors: Yi-Tyng Wu, Shih-Hung Chen, Huai-Hsuan Tsai, Chih-Hung Cheng, Chien-Hua Tsai, Hsuan-Hsu Chen
  • Publication number: 20090109383
    Abstract: A structure of a micro-display is provided. The micro-display structure includes a substrate and pixel regions defined on the substrate; a dielectric layer is disposed on a surface of the substrate; a light absorbent layer is positioned on the dielectric layer; and inorganic dichroic layers which are corresponding to each of the pixel regions positioned on the light absorbent layer, respectively.
    Type: Application
    Filed: October 31, 2007
    Publication date: April 30, 2009
    Inventors: Huai-Hsuan Tsai, Yi-Tyng Wu
  • Publication number: 20090032490
    Abstract: Methods for fabricating color filters are provided. Firstly, a substrate having a first region and a second region is provided. Then, a first dichroic layer and a first mask layer are formed on the first region sequentially. Next, a second dichroic layer is formed on the substrate to cover the first mask layer and the surface of the second region of the substrate. Thereafter, a second mask layer is formed on the second dichroic layer on the second region. Afterwards, the second dichroic layer on the first region and between the first mask layer and the second mask layer is etched. Then, the first mask layer and the second mask layer are removed.
    Type: Application
    Filed: August 2, 2007
    Publication date: February 5, 2009
    Applicants: UNITED MICROELECTRONICS CORP., UNITED MICRODISPLAY OPTRONICS CORP.
    Inventors: Huai-Hsuan Tsai, Fu-Kuo Ou
  • Patent number: 7462560
    Abstract: A process of physical vapor depositing mirror layer with improved reflectivity is disclosed. A wafer is loaded into a PVD tool comprising a degas chamber, a Ti/TiN sputter deposition chamber, a cooling chamber, and an aluminum sputter deposition chamber. A wafer degas process is first performed within the degas chamber. The wafer is then transferred to the Ti/TiN sputter deposition chamber and deposition sputtering a layer of titanium onto the wafer. The wafer is transferred to the cooling chamber and gas cooling the wafer temperature down to 40-50° C. The wafer is then transferred to the aluminum sputter deposition chamber and deposition sputtering a layer of aluminum onto the wafer at 40-50° C. with a backside gas turned off. The deposited layer of aluminum over the wafer has a reflectivity of about 0.925 at wavelength of around 380 nm.
    Type: Grant
    Filed: August 11, 2005
    Date of Patent: December 9, 2008
    Assignee: United Microelectronics Corp.
    Inventors: Nien-Chung Chiang, Chih-Sheng Chang, Chun-Hsing Tung, Yi-Tyng Wu, Huai-Hsuan Tsai, Chi-Rong Lin
  • Publication number: 20070072130
    Abstract: A process for fabricating a micro-display is provided. First, a wafer having a driving circuit thereon is provided. Then, a metallic reflective layer is formed on the wafer. Thereafter, an anti-reflection layer and a patterned photoresist layer are sequentially formed on the metallic reflective layer. Using the patterned photoresist layer as an etching mask, the anti-reflection layer and the metallic reflective layer are etched to form a trench pattern that exposes the surface of the wafer. After that, the patterned photoresist layer is removed. A dielectric layer is formed to cover the anti-reflection layer and fill the trench pattern. Then, a portion of the dielectric layer and the anti-reflection layer are removed to expose the surface of the metallic reflective layer.
    Type: Application
    Filed: September 28, 2005
    Publication date: March 29, 2007
    Inventors: Yi-Tyng Wu, Shih-Hung Chen, Huai-Hsuan Tsai, Chih-Hung Cheng, Chien-Hua Tsai, Hsuan-Hsu Chen
  • Publication number: 20070037393
    Abstract: A process of physical vapor depositing mirror layer with improved reflectivity is disclosed. A wafer is loaded into a PVD tool comprising a degas chamber, a Ti/TiN sputter deposition chamber, a cooling chamber, and an aluminum sputter deposition chamber. A wafer degas process is first performed within the degas chamber. The wafer is then transferred to the Ti/TiN sputter deposition chamber and deposition sputtering a layer of titanium onto the wafer. The wafer is transferred to the cooling chamber and gas cooling the wafer temperature down to 40-50° C. The wafer is then transferred to the aluminum sputter deposition chamber and deposition sputtering a layer of aluminum onto the wafer at 40-50° C. with a backside gas turned off. The deposited layer of aluminum over the wafer has a reflectivity of about 0.925 at wavelength of around 380 nm.
    Type: Application
    Filed: August 11, 2005
    Publication date: February 15, 2007
    Inventors: Nien-Chung Chiang, Chih-Sheng Chang, Chun-Hsing Tung, Yi-Tyng Wu, Huai-Hsuan Tsai, Chi-Rong Lin