Patents Assigned to Semiconductor Energy Co., Ltd.
  • Patent number: 9252459
    Abstract: A nonaqueous electrolyte of the present invention includes an ionic liquid including a first alicyclic quaternary ammonium cation having one or more substituents, a second alicyclic quaternary ammonium cation having an alicyclic skeleton that is the same as an alicyclic skeleton of the first alicyclic quaternary ammonium cation, and a counter anion to the first alicyclic quaternary ammonium cation and the second alicyclic quaternary ammonium cation and an alkali metal salt. In the second alicyclic quaternary ammonium cation, one of substituents bonded to a nitrogen atom in the alicyclic skeleton is a substituent including a halogen element. In the ionic liquid, the amount of a salt including the second alicyclic quaternary ammonium cation is less than or equal to 1 wt % per unit weight of the ionic liquid, or is less than or equal to 0.8 wt % per unit weight of the nonaqueous electrolyte.
    Type: Grant
    Filed: December 19, 2012
    Date of Patent: February 2, 2016
    Assignee: Semiconductor Energy Co., Ltd.
    Inventors: Toru Itakura, Kyosuke Ito, Rie Yokoi, Jun Ishikawa
  • Patent number: 8604481
    Abstract: A thin film transistor includes a gate insulating layer covering a gate electrode, a semiconductor layer in contact with the gate insulating layer, and impurity semiconductor layers which are in contact with part of the semiconductor layer and which form a source region and a drain region. The semiconductor layer includes a microcrystalline semiconductor layer formed on the gate insulating layer and a microcrystalline semiconductor region containing nitrogen in contact with the microcrystalline semiconductor layer. The thin film transistor in which off-current is small and on-current is large can be manufactured with high productivity.
    Type: Grant
    Filed: October 3, 2012
    Date of Patent: December 10, 2013
    Assignee: Semiconductor Energy Co., Ltd.
    Inventors: Hidekazu Miyairi, Takeyoshi Watabe, Takashi Shimazu
  • Patent number: 8518760
    Abstract: The invention provides a display device and a method for manufacturing thereof by increasing a material efficiently as well as simplifying steps. Also, the invention provides a technique for forming a pattern such as a wiring, that is used for forming a display device, to have a predetermined shape with an excellent controllability. The method for manufacturing a display device includes the steps of: forming a lyophobic region; selectively irradiating laser beam in the lyophobic region to form a lyophilic region; selectively discharging a composition, that contains a conductive material, in the lyophilic region to form a gate electrode layer; forming a gate insulating layer and a semiconductor layer over the gate electrode layer; discharging a composition containing a conductive material over the semiconductor layer to form a source electrode layer and a drain electrode layer; and forming a pixel electrode layer on the source or drain electrode layer.
    Type: Grant
    Filed: March 17, 2011
    Date of Patent: August 27, 2013
    Assignee: Semiconductor Energy Co., Ltd.
    Inventors: Shunpei Yamazaki, Osamu Nakamura, Shinji Maekawa, Gen Fujii, Toshiyuki Isa
  • Patent number: 7355202
    Abstract: A gate-insulated thin film transistor is disclosed. One improvement is that the thin film transistor is formed on a substrate through a blocking layer in between so that it is possible to prevent the transistor from being contaminated with impurities such as alkali ions which exist in the substrate. Also, a halogen is added to either or both of the blocking layer and a gate insulator of the transistor.
    Type: Grant
    Filed: August 18, 2003
    Date of Patent: April 8, 2008
    Assignee: Semiconductor Energy Co., Ltd.
    Inventors: Hongyong Zhang, Shunpei Yamazaki
  • Patent number: 4571446
    Abstract: A photoelectric conversion panel which includes a PIN type non-single-crystal semiconductor laminated photoelectric conversion member formed on a substrate, the substrate is formed by a thin, flexible, chemically reinforced glass sheet.A plurality of such photoelectric conversion panels are arranged side by side by means of a flexible plastic frame reinforced with carbon fibers.
    Type: Grant
    Filed: May 25, 1984
    Date of Patent: February 18, 1986
    Assignee: Semiconductor Energy Co., Ltd.
    Inventor: Shunpei Yamazaki