Patents Examined by Priya Rampersaud
  • Patent number: 8598028
    Abstract: The present disclosure provides a method of fabricating a semiconductor device. The method includes forming a first gate structure over an iso region of a substrate and a second gate structure over a dense region of the substrate. The dense region has a greater pattern density than the iso region. The first and second gate structures each have a respective hard mask disposed thereon. The method includes removing the hard masks from the first and second gate structures. The removal of the hard mask from the second gate structure causes an opening to be formed in the second gate structure. The method includes performing a deposition process followed by a first polishing process to form a sacrificial component in the opening. The method includes performing a second polishing process to remove the sacrificial component and portions of the first and second gate structures.
    Type: Grant
    Filed: December 22, 2011
    Date of Patent: December 3, 2013
    Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.
    Inventors: Che-Hao Tu, Chi-Jen Liu, Tzu-Chung Wang, Weilun Hong, Ying-Tsung Chen, Liang-Guang Chen
  • Patent number: 8581226
    Abstract: According to one embodiment, a nonvolatile memory device includes a word line interconnect layer, a bit line interconnect layer, and a pillar. The word line interconnect layer includes a plurality of word lines extending in a first direction. The bit line interconnect layer includes a plurality of bit lines extending in a second direction. The pillar is disposed between each of the word lines and each of the bit lines. The pillar includes a current selection film and a plurality of variable resistance films stacked on the current selection film. One variable resistance film includes a metal and either oxygen or nitrogen. Remainder of the variable resistance films include the metal, either oxygen or nitrogen, and a highly electronegative substance having electronegativity higher than electronegativity of the metal. A concentration of highly electronegative substance in the remainder of the variable resistance films is different among the variable resistance films.
    Type: Grant
    Filed: September 20, 2011
    Date of Patent: November 12, 2013
    Assignee: Kabushiki Kaisha Toshiba
    Inventor: Kensuke Takahashi
  • Patent number: 8557614
    Abstract: An object is to provide a method for manufacturing a lighting device, in which a problem of a short circuit between an upper electrode and a lower electrode of a light-emitting element is solved without reducing a light-emitting property of a normal portion of the light-emitting element to the utmost. In a light-emitting element including an upper electrode, an electroluminescent layer, and a lower electrode, a short-circuited portion that is undesirably formed between the upper electrode and the lower electrode is irradiated with a laser beam, whereby a region where the short-circuited portion is removed is formed, and then the region is filled with an insulating resin having a light-transmitting property. Thus, the problem of the short circuit between the upper electrode and the lower electrode is solved and yield of a lighting device is improved.
    Type: Grant
    Filed: December 23, 2011
    Date of Patent: October 15, 2013
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Shunpei Yamazaki, Yasuyuki Arai, Naoto Kusumoto
  • Patent number: 8536646
    Abstract: The present invention provides a trench type power transistor device including a semiconductor substrate, at least one transistor cell, a gate metal layer, a source metal layer, and a second gate conductive layer. The semiconductor substrate has at least one trench. The transistor cell includes a first gate conductive layer disposed in the trench. The gate metal layer and the source metal layer are disposed on the semiconductor substrate. The second gate conductive layer is disposed between the first gate conductive layer and the source metal layer. The second gate conductive layer electrically connects the first gate conductive layer to the gate metal layer, and the second gate conductive layer is electrically insulated from the source metal layer and the semiconductor substrate.
    Type: Grant
    Filed: September 21, 2011
    Date of Patent: September 17, 2013
    Assignee: Sinopower Semiconductor Inc.
    Inventors: Teng-Hao Yeh, Shian-Hau Liao, Chia-Hui Chen, Sung-Shan Tai
  • Patent number: 8470662
    Abstract: The present invention relates to a semiconductor device and a manufacturing method for making the same, wherein, according to the method, after the gate stack is formed, a buffer layer is formed on sidewalls of an PMOS gate stack, the buffer layer being formed of a porous low-k dielectric layer; and then, sidewall spacers and source/drain/halo regions, and source and drain regions are formed for the device; and finally, a high-temperature anneal is conducted in an oxygen environment such that the oxygen in the oxygen environment diffuse through the buffer layer into the high-k dielectric layer of the second gate stack. The present invention lowers threshold voltage of the PMOS device without affecting the threshold voltage of the NMOS device, avoids damages to the gate and substrate incurred by removing the PMOS sidewall spacer in a traditional process, and hereby effectively improves the overall performance of the device.
    Type: Grant
    Filed: June 28, 2010
    Date of Patent: June 25, 2013
    Assignee: Institute of Microelectronics, Chinese Academy of Sciences
    Inventors: Zhijiong Luo, Huilong Zhu, Haizhou Yin
  • Patent number: 8343787
    Abstract: A method of fabricating an LCD device is discussed. The method in one embodiment includes: forming a gate electrode and a gate pad on a substrate, which is defined into a display area corresponding to pixel regions and a non-display area corresponding to pad regions, through a first mask process; sequentially stacking a gate insulation film, an amorphous silicon layer, an impurity-doped amorphous silicon layer and a metal film on the substrate provided with the gate electrode and then forming an active layer, source/drain electrode and a data line through a second mask process which uses one of half-tone and diffraction masks; and forming a transparent conductive material on the substrate provided with the source/drain electrode and forming a pixel electrode through a third mask process.
    Type: Grant
    Filed: November 25, 2011
    Date of Patent: January 1, 2013
    Assignee: LG Display Co., Ltd.
    Inventors: Cheol Hwan Lee, Jong Won Moon