Patents Examined by Long Pham
  • Patent number: 8212244
    Abstract: A blue organic light emitting device is provided. The blue organic light emitting device comprises a first electrode; a second electrode; and an organic layer including an electron transport layer between the first electrode and the second electrode, wherein the electron transport layer includes a material having an energy gap of 2.8 eV or more between a highest occupied molecular orbital (HOMO) and a lowest unoccupied molecular orbital (LUMO).
    Type: Grant
    Filed: January 22, 2010
    Date of Patent: July 3, 2012
    Assignee: Samsung Mobile Display Co., Ltd.
    Inventors: Mie-Hwa Park, Kyung-Hoon Choi, Young-Suck Choi, Young-Ho Park
  • Patent number: 8212313
    Abstract: Provided is a semiconductor device which can relax the electric field in the junction termination region, and can achieve a high breakdown voltage. The semiconductor device includes an element region (51) and a junction termination region (52). The element region includes: a first semiconductor region (2) of a first conductivity type; a second semiconductor region (4) of a second conductivity type; a third semiconductor region (10) of the first conductivity type; a trench (35) passing through the second semiconductor region and the third semiconductor region and has a bottom surface which reaches the first semiconductor region (2); a gate insulating film (12) formed on the side surface and a bottom surface of the trench; and a gate electrode (8) embedded in the trench.
    Type: Grant
    Filed: June 24, 2008
    Date of Patent: July 3, 2012
    Assignee: Sanken Electric Co., Ltd.
    Inventor: Masayuki Hanaoka
  • Patent number: 8212247
    Abstract: An organic light emitting display includes data lines and scan lines intersecting each other, a scan driving unit for supplying a scan signal to the scan lines, a data driving unit for supplying a data signal to the data lines, and pixels defined at intersection points of the data and scan lines, each pixel having an organic light emitting diode, a first TFT with an inverted staggered top gate structure and connected to the organic light emitting diode, the first TFT including an oxide semiconductor as an active layer, and a second TFT with an inverted staggered bottom gate structure and configured to receive the scan signal from the scan lines, the second TFT including an oxide semiconductor as an active layer.
    Type: Grant
    Filed: January 22, 2010
    Date of Patent: July 3, 2012
    Assignee: Samsung Mobile Display Co., Ltd.
    Inventors: Ki-Nyeng Kang, Jae-Seob Lee, Dong-Un Jin
  • Patent number: 8207528
    Abstract: An organic transistor includes a substrate; a gate electrode and a gate insulating film sequentially formed on the substrate in the stated order; and a source electrode, a drain electrode, and an organic semiconductor layer formed on at least the gate insulating film. Ultraviolet light is radiated to the substrate from a side without the gate electrode, transmitted through the substrate and the gate insulating film, reflected at the gate electrode, and absorbed at the organic semiconductor layer. Conductivity of the organic semiconductor layer that has absorbed the ultraviolet light is lower than that of the organic semiconductor layer that has not absorbed the ultraviolet light.
    Type: Grant
    Filed: October 17, 2008
    Date of Patent: June 26, 2012
    Assignee: Ricoh Company, Ltd.
    Inventors: Keiichiro Yutani, Hidenori Tomono, Takumi Yamaga
  • Patent number: 8207531
    Abstract: Provided is a thin film transistor including: a first gate electrode; a first gate insulating layer covering the first gate electrode; a semiconductor layer on the first gate insulating layer; a second gate insulating layer on the semiconductor layer; a second gate electrode on the second gate insulating layer; and a drain electrode and a source electrode electrically connected to the semiconductor layer, in which: the semiconductor layer is an amorphous oxide semiconductor containing at least one of Zn, Ga, In, and Sn; the first gate electrode shields light entering the semiconductor layer from below, and the second gate electrode shields light entering the semiconductor layer from above; and the second gate electrode is electrically connected to the first gate electrode by penetrating the first gate insulating layer and the second gate insulating layer, to thereby shield light entering the semiconductor layer from at least one of sides thereof.
    Type: Grant
    Filed: August 18, 2010
    Date of Patent: June 26, 2012
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kenji Takahashi, Ryo Hayashi, Seiichiro Yaginuma
  • Patent number: 8207538
    Abstract: A thin film transistor includes a first insulating layer covering the gate electrode layer; source and drain regions which at least partly overlaps with the gate electrode layer; a pair of second insulating layers which is provided apart from each other in a channel length direction over the first insulating layer and which at least partly overlaps with the gate electrode layer and the pair of impurity semiconductor layers; a pair of microcrystalline semiconductor layers provided apart from each other on and in contact with the second insulating layers; and an amorphous semiconductor layer covering the first insulating layer, the pair of second insulating layers, and the pair of microcrystalline semiconductor layers and which extends to exist between the pair of microcrystalline semiconductor layers. The first insulating layer is a silicon nitride layer and each of the pair of the second insulating layers is a silicon oxynitride layer.
    Type: Grant
    Filed: October 6, 2010
    Date of Patent: June 26, 2012
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventor: Yasuhiro Jinbo
  • Patent number: 8203187
    Abstract: A 3D memory device includes an array of semiconductor body pillars and bit line pillars, dielectric charge trapping structures, and a plurality of levels of word line structures arranged orthogonally to the array of semiconductor body pillars and bit line pillars. The semiconductor body pillars have corresponding bit line pillars on opposing first and second sides, providing source and drain terminals. The semiconductor body pillars have first and second channel surfaces on opposing third and fourth sides. Dielectric charge trapping structures overlie the first and second channel surfaces, providing data storage sites on two sides of each semiconductor body pillar in each level of the 3D array. The device can be operated as a 3D AND-decoded flash memory.
    Type: Grant
    Filed: February 12, 2010
    Date of Patent: June 19, 2012
    Assignee: Macronix International Co., Ltd.
    Inventors: Hsiang-Lan Lung, Yen-Hao Shih, Erh-Kun Lai, Ming Hsiu Lee, Hang-Ting Lue
  • Patent number: 8198136
    Abstract: A stacked semiconductor package and a method for manufacturing the same. The stacked semiconductor package includes a semiconductor chip module having two or more semiconductor chips which are stacked in the shape of steps. Each of the semiconductor chips includes pads located on an upper surface thereof and an inclined side surface connected with the upper surface. Connection patterns are formed in the shape of lines on the inclined side surfaces and the upper surfaces of the semiconductor chips to electrically connect pads of the semiconductor chips.
    Type: Grant
    Filed: October 14, 2010
    Date of Patent: June 12, 2012
    Assignee: Hynix Semiconductor Inc.
    Inventor: Tac Keun Oh
  • Patent number: 8193528
    Abstract: The present invention relates to electronic devices, especially electroluminescent devices, comprising azapyrenes of formula (I), or formula (III), wherein Y1, Y2, Y3, Y4, X1, X2 and X3 are independently each other N, or CR4, with the proviso that at least one of the groups X1, X2 and X3 is a group CR4, R1 is hydrogen, F, —SiR100R101R102, or an organic substituent, R4 is hydrogen, F, —SiR100R101R102, or an organic substituent, or any of the substituents R1, R1? and R4, which are adjacent to each other, together form an aromatic, or heteroaromatic ring, or ring system, which can optionally be substituted, m is an integer of 1 to 6, and R100, R101 and R102 are independently of each other a C1-C8alkyl group, a C6-C24aryl group, or a C7-C12aralkyl group, which may optionally be substituted, and Q is a linking group; with the proviso that in the compound of formula (III) at least one of the substituents R1, or R4 is a group Q; especially as host for phosphorescent emitters, electron transporting materials, or emit
    Type: Grant
    Filed: June 23, 2009
    Date of Patent: June 5, 2012
    Assignee: BASF SE
    Inventors: Thomas Schäfer, Thomas Eichenberger, Kristina Bardon, Andrea Ricci, Natalia Chebotareva
  • Patent number: 8193017
    Abstract: An organic light emitting display device includes a substrate, a plurality of pixels on the substrate having a first region configured to emit light and a second region configured to transmit external light, a plurality of pixel circuit units, a plurality of first electrodes, a first organic layer on the plurality of first electrodes, a second organic layer on the first organic layer, the second organic layer including an emission layer, a third organic layer on the second organic layer, the third organic layer being positioned in the first region and outside a central portion of the second region, and a second electrode having a first portion only on the third organic layer.
    Type: Grant
    Filed: March 8, 2011
    Date of Patent: June 5, 2012
    Assignee: Samsung Mobile Display Co., Ltd.
    Inventors: Jung-Yeon Kim, Mu-Hyun Kim, Beom-Rak Choi, Un-Cheol Sung
  • Patent number: 8188463
    Abstract: An organic light emitting device includes a cathode and an optional substrate external to the device. The device further includes at least one film layer disposed on at least one of the cathode or the substrate. The at least one film layer includes at least one of a magnetic, a mixed magnetic material, and combinations thereof. The device further includes an anode and at least one organic layer intermediate the cathode and anode.
    Type: Grant
    Filed: November 19, 2009
    Date of Patent: May 29, 2012
    Assignee: General Electric Company
    Inventors: Deeder Aurongzeb, James Michael Kostka
  • Patent number: 8188483
    Abstract: Power devices are provided including a p-type conductivity well region and a buried p+ conductivity region in the p-type conductivity well region. An n+ conductivity region is provided on the buried p+ conductivity region. A channel region of the power device is provided adjacent the buried p+ conductivity region and n+ conductivity region, the channel region of the power device having a root mean square (RMS) surface roughness of less than about 1.0 ?.
    Type: Grant
    Filed: April 16, 2009
    Date of Patent: May 29, 2012
    Assignee: Cree, Inc.
    Inventors: Mrinal K. Das, Michael Laughner
  • Patent number: 8183117
    Abstract: An integrated circuit including one or more transistors in which source and drain regions are formed as embedded silicon-germanium (eSiGe). Guard ring structures in the integrated circuit are formed in single-crystal silicon, rather than in eSiGe. In one example, p-channel MOS transistors have source/drain regions formed in eSiGe, while the locations at which p-type guard rings are formed are masked from the recess etch and the eSiGe selective epitaxy. Defects caused by concentrated crystal strain at the corners of guard rings and similar structures are eliminated.
    Type: Grant
    Filed: August 18, 2010
    Date of Patent: May 22, 2012
    Assignee: Texas Instruments Incorporated
    Inventor: Gregory Charles Baldwin
  • Patent number: 8183570
    Abstract: A thin film transistor array panel, in which a middle storage electrode and a storage electrode overlapping a drain electrode of a thin film transistor thereby forming a storage capacitance are formed. Accordingly, sufficient storage capacitance may be formed without a decrease of the aperture ratio and light transmittance of a liquid crystal display. Also, the capacitance may be sufficiently formed through the connecting member connected to a gate metal layer.
    Type: Grant
    Filed: November 16, 2010
    Date of Patent: May 22, 2012
    Assignee: Samsung Electronics Oc., Ltd.
    Inventors: Dong-Gyu Kim, Sung-Haeng Cho, Hyung-Jun Kim, Sung-Ryul Kim, Yong-Mo Choi
  • Patent number: 8183611
    Abstract: A spin transistor that includes: a semiconductor substrate including an upper cladding layer and a lower cladding layer, and a channel layer interposed between the upper and lower cladding layers; a ferromagnetic source and a ferromagnetic drain formed on the semiconductor substrate and spaced from each other in a length direction of the channel layer; and a gate electrode formed on the semiconductor substrate between the source and the drain and having applied a gate voltage thereto to control a spin precession of an electron passing through the channel layer, wherein the semiconductor substrate includes a first carrier supply layer of a first conductivity type disposed below the lower cladding layer and supplying carriers to the channel layer, and a second carrier supply layer of a second conductivity type opposite to the first conductivity type formed on the upper cladding layer and supplying the carriers to the channel layer.
    Type: Grant
    Filed: August 18, 2010
    Date of Patent: May 22, 2012
    Assignee: Korea Institute of Science and Technology
    Inventors: Hyung Jun Kim, Jin Dong Song, Hyun Cheol Koo, Kyung Ho Kim, Suk Hee Han
  • Patent number: 8178413
    Abstract: A gate oxide and method of fabricating a gate oxide that produces a more reliable and thinner equivalent oxide thickness than conventional SiO2 gate oxides are provided. Gate oxides formed from alloys such as cobalt-titanium are thermodynamically stable such that the gate oxides formed will have minimal reactions with a silicon substrate or other structures during any later high temperature processing stages. The process shown is performed at lower temperatures than the prior art, which inhibits unwanted species migration and unwanted reactions with the silicon substrate or other structures. Using a thermal evaporation technique to deposit the layer to be oxidized, the underlying substrate surface smoothness is preserved, thus providing improved and more consistent electrical properties in the resulting gate oxide.
    Type: Grant
    Filed: September 23, 2010
    Date of Patent: May 15, 2012
    Assignee: Micron Technology, Inc.
    Inventors: Kie Y. Ahn, Leonard Forbes
  • Patent number: 8178915
    Abstract: An analog floating-gate electrode in an integrated circuit, and method of fabricating the same, in which trapped charge can be stored for long durations. The analog floating-gate electrode is formed in a polycrystalline silicon gate level, and includes n-type and p-type doped portions serving as gate electrodes of n-channel and p-channel MOS transistors, respectively; a plate of a metal-to-poly storage capacitor; and a plate of poly-to-active tunneling capacitors. Silicide-block silicon dioxide blocks the formation of silicide cladding on the electrode, while other polysilicon structures in the integrated circuit are silicide-clad. An opening at the surface of the analog floating-gate electrode, at the location at which n-type and p-type doped portions of the floating gate electrode abut, allow formation of silicide at that location, shorting the p-n junction.
    Type: Grant
    Filed: March 23, 2011
    Date of Patent: May 15, 2012
    Assignee: Texas Instruments Incorporated
    Inventors: Allan T. Mitchell, Imran Mahmood Khan, Michael A. Wu
  • Patent number: 8178431
    Abstract: The invention relates to a process for producing a p-n junction in a nanostructure, in which the nanostructure has one or more nanoconstituents made of a semiconductor material with a single type of doping having one conductivity type, characterized in that it includes a step consisting in forming a dielectric element (3, 32, . . . , 3n) embedding the nanostructure over a height h, the dielectric element generating a surface potential capable of inverting the conductivity type over a defined width W of the nanoconstituents(s) thus embedded over the height h.
    Type: Grant
    Filed: January 22, 2010
    Date of Patent: May 15, 2012
    Assignee: Commissariat a l'Energie Atomique
    Inventors: Eddy Romain-Latu, Philippe Gilet
  • Patent number: 8168976
    Abstract: A display panel includes a substrate having a display area and a blank area. The blank area includes at least one of a non-metal line region and a metal-line region. The non-metal line region includes a plurality of insulating patterns and a first conductive pattern layer formed on the substrate. The insulating patterns are isolated from each other by the first conductive pattern layer. The metal-line region includes an insulating multilayer formed on the substrate and a conductive pattern layer formed on the insulating multilayer. Several isolated zones are formed by the conductive pattern layer on the surface of the insulating multilayer.
    Type: Grant
    Filed: October 9, 2009
    Date of Patent: May 1, 2012
    Assignee: AU Optronics Corp.
    Inventors: Chih-Hung Shih, Chih-Chun Yang, Ming-Yuan Huang
  • Patent number: 8159023
    Abstract: A semiconductor device includes a semiconductor substrate of a first conductivity type, a first semiconductor region of the first conductivity type on the semiconductor substrate, and a plurality of second semiconductor regions of a second conductivity type disposed separately in the first semiconductor region. A difference between a charge quantity expressed by an integral value of a net activated doping concentration in the second semiconductor regions in the surface direction of the semiconductor substrate and a charge quantity expressed by an integral value of a net activated doping concentration in the first semiconductor region in the surface direction of the semiconductor substrate is always a positive quantity and becomes larger from the depth of the first junction plane to a depth of a second junction plane on an opposite side from the first junction plane.
    Type: Grant
    Filed: January 22, 2010
    Date of Patent: April 17, 2012
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Syotaro Ono, Wataru Saito, Nana Hatano, Hiroshi Ohta, Miho Watanabe