Thin-film Transistor (epo) Patents (Class 257/E29.273)

  • Patent number: 8901550
    Abstract: An organic light-emitting display apparatus includes an active layer of a thin film transistor (TFT), a gate electrode including a transparent conductive material or a metal that on the active layer, a first insulating layer on the substrate, source and drain electrodes electrically connected to the active layer, a second insulating layer between the gate electrode and the source and drain electrodes, a first conductive layer of a transparent conductive material on the first insulating layer, a second conductive layer on the first conductive layer, the second conductive layer being a metal, a third conductive layer on the second conductive layer, the third conductive layer being made of a same material as the source and drain electrodes, and being connected to the first conductive layer; and a protection layer that includes a transparent conductive oxide, the protection layer being on the third conductive layer.
    Type: Grant
    Filed: July 10, 2013
    Date of Patent: December 2, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Se-Hun Park, Won-Kyu Lee, Yeoung-Jin Chang, Jae-Hwan Oh, Seong-Hyun Jin, Jae-Beom Choi
  • Patent number: 8890159
    Abstract: An oxide semiconductor stacked film which does not easily cause a variation in electrical characteristics of a transistor and has high stability is provided. Further, a transistor which includes the oxide semiconductor stacked film in its channel formation region and has stable electrical characteristics is provided. An oxide semiconductor stacked film includes a first oxide semiconductor layer, a second oxide semiconductor layer, and a third oxide semiconductor layer which are sequentially stacked and each of which contains indium, gallium, and zinc. The content percentage of indium in the second oxide semiconductor layer is higher than that in the first oxide semiconductor layer and the third oxide semiconductor layer, and the absorption coefficient of the oxide semiconductor stacked film, which is measured by the CPM, is lower than or equal to 3×10?3/cm in an energy range of 1.5 eV to 2.3 eV.
    Type: Grant
    Filed: July 29, 2013
    Date of Patent: November 18, 2014
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Shunpei Yamazaki, Masashi Tsubuku, Ryosuke Watanabe, Masashi Oota, Noritaka Ishihara, Koki Inoue
  • Patent number: 8890153
    Abstract: An active matrix substrate is disclosed, enabling to suppress variation in signal voltages among pixel electrodes. An active matrix substrate includes: an insulating substrate; a plurality of pixel electrodes arranged in a matrix on the insulating substrate; and a source wiring extending in a column direction so as to overlap with two pixel electrodes adjacent to each other in a row direction on the insulating substrate. The pixel electrodes and the source wiring are formed in different layers via an insulating film, the source wiring has a main line portion and extension portions extended from both sides of the main line portion, and the extension portion is formed of a transparent conductive material.
    Type: Grant
    Filed: November 30, 2010
    Date of Patent: November 18, 2014
    Assignee: Sharp Kabushiki Kaisha
    Inventor: Akiyoshi Fujii
  • Patent number: 8890157
    Abstract: The present invention provides a pixel structure including a substrate, a thin-film transistor disposed on the substrate, a first insulating layer covering the thin-film transistor and the substrate, a common electrode, a connecting electrode, a second insulating layer, and a pixel electrode. The thin-film transistor includes a drain electrode. The first insulating layer has a first opening exposing the drain electrode. The common electrode and the connecting electrode are disposed on the first insulating layer. The connecting electrode extends into the first opening to be electrically connected to the drain electrode. The connecting electrode is electrically insulated from the common electrode. The second insulating layer covers the first insulating layer, the common electrode, the connecting electrode, and has a second opening exposing the connecting electrode. The pixel electrode is disposed on the second insulating layer and electrically connected to the connecting electrode through the second opening.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: November 18, 2014
    Assignee: HannStar Display Corp.
    Inventors: Hsuan-Chen Liu, Hsien-Cheng Chang, Da-Ching Tang, Chien-Hao Wu, Ching-Chao Wang, Jung-Chen Lin
  • Patent number: 8890158
    Abstract: An object is to provide a highly reliable transistor and a semiconductor device including the transistor. A semiconductor device including a gate electrode; a gate insulating film over the gate electrode; an oxide semiconductor film over the gate insulating film; and a source electrode and a drain electrode over the oxide semiconductor film, in which activation energy of the oxide semiconductor film obtained from temperature dependence of a current (on-state current) flowing between the source electrode and the drain electrode when a voltage greater than or equal to a threshold voltage is applied to the gate electrode is greater than or equal to 0 meV and less than or equal to 25 meV, is provided.
    Type: Grant
    Filed: June 20, 2013
    Date of Patent: November 18, 2014
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Shunpei Yamazaki, Takahiro Tsuji, Teruaki Ochiai, Koji Kusunoki, Hidekazu Miyairi
  • Patent number: 8884282
    Abstract: A transistor is provided in which the bottom surface portion of an oxide semiconductor film is provided with a metal oxide film containing a constituent similar to that of the oxide semiconductor film, and an insulating film containing a different constituent from the metal oxide film and the oxide semiconductor film is formed in contact with a surface of the metal oxide film, which is opposite to the surface in contact with the oxide semiconductor film. In addition, the oxide semiconductor film used for the active layer of the transistor is an oxide semiconductor film highly purified to be electrically i-type (intrinsic) through heat treatment in which impurities such as hydrogen, moisture, hydroxyl, and hydride are removed from the oxide semiconductor and oxygen which is one of main component materials of the oxide semiconductor is supplied and is also reduced in a step of removing impurities.
    Type: Grant
    Filed: March 29, 2011
    Date of Patent: November 11, 2014
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventor: Shunpei Yamazaki
  • Patent number: 8884297
    Abstract: A manufacturing method of a microcrystalline silicon film includes the steps of forming a first microcrystalline silicon film over an insulating film by a plasma CVD method under a first condition; and forming a second microcrystalline silicon film over the first microcrystalline silicon film under a second condition. As a source gas supplied to a treatment chamber, a deposition gas containing silicon and a gas containing hydrogen are used. In the first condition, a flow rate of hydrogen is set at a flow rate 50 to 1000 times inclusive that of the deposition gas, and the pressure inside the treatment chamber is set 67 to 1333 Pa inclusive. In the second condition, a flow rate of hydrogen is set at a flow rate 100 to 2000 times inclusive that of the deposition gas, and the pressure inside the treatment chamber is set 1333 to 13332 Pa inclusive.
    Type: Grant
    Filed: May 6, 2011
    Date of Patent: November 11, 2014
    Assignees: Semiconductor Energy Laboratory Co., Ltd., Sharp Kabushiki Kaisha
    Inventors: Sachiaki Tezuka, Yasuhiro Jinbo, Toshinari Sasaki, Hidekazu Miyairi, Yosuke Kanzaki, Masao Moriguchi
  • Patent number: 8884345
    Abstract: The graphene electronic device may include a gate oxide on a conductive substrate, the conductive substrate configured to function as a gate electrode, a pair of first metals on the gate oxide, the pair of the first metals separate from each other, a graphene channel layer extending between the first metals and on the first metals, and a source electrode and a drain electrode on both edges of the graphene channel layer.
    Type: Grant
    Filed: September 24, 2013
    Date of Patent: November 11, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jin-seong Heo, Hyun-jong Chung, Sun-ae Seo, Sung-hoon Lee, Hee-jun Yang
  • Patent number: 8884302
    Abstract: A semiconductor device including a first gate electrode and a second gate electrode formed apart from each other over an insulating surface, an oxide semiconductor film including a region overlapping with the first gate electrode with a gate insulating film interposed therebetween, a region overlapping with the second gate electrode with the gate insulating film interposed therebetween, and a region overlapping with neither the first gate electrode nor the second gate electrode, and an insulating film covering the gate insulating film, the first gate electrode, the second gate electrode, and the oxide semiconductor film, and being in direct contact with the oxide semiconductor film is provided.
    Type: Grant
    Filed: February 26, 2013
    Date of Patent: November 11, 2014
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Seiko Inoue, Hiroyuki Miyake, Kouhei Toyotaka
  • Patent number: 8878181
    Abstract: An oxide thin film transistor (TFT) and a fabrication method thereof are provided.
    Type: Grant
    Filed: November 12, 2013
    Date of Patent: November 4, 2014
    Assignee: LG Display Co., Ltd.
    Inventors: Hoon Yim, Dae-Hwan Kim
  • Patent number: 8877569
    Abstract: An object is to provide a semiconductor device provided with a thin film transistor having excellent electric characteristics using an oxide semiconductor layer. An In—Sn—O-based oxide semiconductor layer including SiOX is used for a channel formation region. In order to reduce contact resistance between the In—Sn—O-based oxide semiconductor layer including SiOX and a wiring layer formed from a metal material having low electric resistance, a source region or drain region is formed between a source electrode layer or drain electrode layer and the In—Sn—O-based oxide semiconductor layer including SiOX. The source region or drain region and a pixel region are formed using an In—Sn—O-based oxide semiconductor layer which does not include SiOX.
    Type: Grant
    Filed: April 25, 2012
    Date of Patent: November 4, 2014
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Yoshiaki Oikawa, Hotaka Maruyama, Hiromichi Godo, Daisuke Kawae, Shunpei Yamazaki
  • Patent number: 8878184
    Abstract: A display device having the high aperture ratio and a storage capacitor with high capacitance is to be obtained. The present invention relates to a display device and a manufacturing method thereof. The display device includes a thin film transistor which includes a gate electrode, a gate insulating film, a first semiconductor layer, a channel protective film, a second semiconductor having conductivity which is divided into a source region and a drain region, and a source electrode and a drain electrode; a third insulating layer formed over the second conductive film; a pixel electrode formed over the third insulating layer, which is connected to one of the source electrode and the drain electrode; and a storage capacitor formed in a region where a capacitor wiring over the first insulating layer and the pixel electrode are overlapped with the third insulating layer over the capacitor wiring interposed therebetween.
    Type: Grant
    Filed: October 14, 2011
    Date of Patent: November 4, 2014
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventor: Kunio Hosoya
  • Patent number: 8871616
    Abstract: A thin film transistor (TFT), an OLED device having the TFT and a method of fabricating the same and a method of fabricating an organic light emitting diode (OLED) display device that includes the TFT. The method of fabricating a TFT includes providing a substrate, forming a buffer layer on the substrate, forming an amorphous silicon layer pattern on the buffer layer, forming a metal layer on an entire surface of the substrate, forming a semiconductor layer by applying an electrical field to the metal layer to crystallize the amorphous silicon layer pattern, forming source and drain electrodes connected to the semiconductor layer by patterning the metal layer, forming a gate insulating layer on the entire surface of the substrate, forming a gate electrode on the gate insulating layer to correspond to the semiconductor layer and forming a protective layer on the entire surface of the substrate.
    Type: Grant
    Filed: March 5, 2010
    Date of Patent: October 28, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Ji-Su Ahn, Won-Pil Lee
  • Patent number: 8866132
    Abstract: Thin-film transistors and techniques for forming thin-film transistors (TFT). In some embodiments, there is provided a method of forming a TFT, comprising forming a body region of the TFT comprising an organic semiconducting material, and forming a protective layer comprising an organic insulating material. Forming the protective layer comprises contacting the body region of the TFT with a solution comprising the organic insulating material. The organic insulating material is a material that phase separates with the organic semiconducting material when the solution contacts the organic semiconducting material. In other embodiments, there is provided an apparatus comprising a TFT.
    Type: Grant
    Filed: November 8, 2012
    Date of Patent: October 21, 2014
    Assignee: Sony Corporation
    Inventor: Akihiro Nomoto
  • Patent number: 8860021
    Abstract: A structure including an oxide semiconductor layer which is provided over an insulating surface and includes a channel formation region and a pair of low-resistance regions between which the channel formation region is positioned, a gate insulating film covering a top surface and a side surface of the oxide semiconductor layer, a gate electrode covering a top surface and a side surface of the channel formation region with the gate insulating film positioned therebetween, and electrodes electrically connected to the low-resistance regions is employed. The electrodes are electrically connected to at least side surfaces of the low-resistance regions, so that contact resistance with the source electrode and the drain electrode is reduced.
    Type: Grant
    Filed: December 17, 2012
    Date of Patent: October 14, 2014
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Atsuo Isobe, Hiromichi Godo
  • Patent number: 8853697
    Abstract: To inhibit a metal element contained in a glass substrate from being diffused into a gate insulating film or an oxide semiconductor film. A semiconductor device includes a glass substrate, a base insulating film formed using metal oxide over the glass substrate, a gate electrode formed over the base insulating film, a gate insulating film formed over the gate electrode, an oxide semiconductor film which is formed over the gate insulating film and overlapping with the gate electrode, and a source electrode and a drain electrode which are electrically connected to the oxide semiconductor film. In a region of the base insulating film that is present in a range of 3 nm or less from a surface of the base insulating film, the concentration of a metal element contained in the glass substrate is less than or equal to 1×1018 atoms/cm3.
    Type: Grant
    Filed: February 26, 2013
    Date of Patent: October 7, 2014
    Assignees: Semiconductor Energy Laboratory Co., Ltd., Sharp Kabushiki Kaisha
    Inventors: Kenichi Okazaki, Takuya Matsuo, Yoshitaka Yamamoto, Hiroshi Matsukizono, Yosuke Kanzaki
  • Patent number: 8853691
    Abstract: A transistor and a manufacturing method thereof are provided. The transistor includes a first gate, a second gate disposed on one side of the first gate, a first semiconductor layer, a second semiconductor layer, an oxide layer, a first insulation layer, a second insulation layer, a source, and a drain. The first semiconductor layer is disposed between the first and second gates; the second semiconductor layer is disposed between the first semiconductor layer and the second gate. The oxide layer is disposed between the first semiconductor layer and the second semiconductor layer. The first insulation layer is disposed between the first gate and the first semiconductor layer; the second insulation layer is disposed between the second gate and the second semiconductor layer. The source and the drain are disposed between the first insulation layer and the second insulation layer and respectively disposed on opposite sides of the oxide layer.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: October 7, 2014
    Assignee: E Ink Holdings Inc.
    Inventors: Chih-Hsiang Yang, Ted-Hong Shinn, Wei-Tsung Chen, Hsing-Yi Wu
  • Patent number: 8853012
    Abstract: A gate insulating film has a convex portion conforming to a surface shape of a gate electrode and a step portion that changes in height from a periphery of the gate electrode along the surface of the gate electrode. An oxide semiconductor layer is disposed on the gate insulating film so as to have a transistor constituting region having a channel region, a source region, and a drain region in a continuous and integral manner and a covering region being separated from the transistor constituting region and covering the step portion of the gate insulating film. A channel protective layer is disposed on the channel region of the oxide semiconductor layer. A source electrode and a drain electrode are disposed in contact respectively with the source region and the drain region of the oxide semiconductor layer. A passivation layer is disposed on the source electrode and the drain electrode.
    Type: Grant
    Filed: August 13, 2013
    Date of Patent: October 7, 2014
    Assignee: Japan Display Inc.
    Inventors: Norihiro Uemura, Takeshi Noda, Hidekazu Miyake, Isao Suzumura
  • Patent number: 8853703
    Abstract: A thin film transistor array panel includes a substrate, gate lines, each including a gate pad, a gate insulating layer, data lines, each including a data pad connected to a source and drain electrode, a first passivation layer disposed on the data lines and the drain electrode, a first electric field generating electrode, a second passivation layer disposed on the first electric field generating electrode, and a second electric field generating electrode. The gate insulating layer and the first and second passivation layers include a first contact hole exposing a part of the gate pad, the first and second passivation layers include a second contact hole exposing a part of the data pad, and at least one of the first and second contact holes have a positive taper structure having a wider area at an upper side than at a lower side.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: October 7, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Ji-Young Park, Yu-Gwang Jeong, Sang Gab Kim, Joon Geol Lee
  • Patent number: 8853687
    Abstract: A thin film transistor substrate according to an exemplary embodiment of the present invention includes a semiconductor layer including metal disposed on an insulating substrate, a gate electrode overlapping the semiconductor layer, and a source electrode and a drain electrode overlapping the semiconductor layer, wherein the metal in the semiconductor layer comprises indium (In), zinc (Zn), and tin (Sn), and a molar ratio ( R , R ? [ mol ? ? % ] = [ In ] [ In + Zn + Sn ] × 100 ) of indium (In) to the metals in the semiconductor layer is less than about 20%, and more specifically, the molar ratio (R, ( R , R ? [ mol ? ? % ] = [ In ] [ In + Zn + Sn ] / 100 ) of indium (In) of the metals in the semiconductor layer is about 5% to about 13%.
    Type: Grant
    Filed: November 16, 2012
    Date of Patent: October 7, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Doo Hyoung Lee, Chan Woo Yang, Seung-Ho Jung, Doo Na Kim, Bo Sung Kim, Eun Hye Park
  • Patent number: 8847228
    Abstract: A thin film transistor array panel includes: a semiconductor layer disposed on an insulation substrate; a gate electrode overlapping the semiconductor layer; a source electrode and a drain electrode overlapping the semiconductor layer; a first barrier layer disposed between the source electrode and the semiconductor layer; and a second barrier layer disposed between the drain electrode and the semiconductor layer, wherein the first barrier layer and the second barrier layer include nickel-chromium (NiCr).
    Type: Grant
    Filed: November 30, 2012
    Date of Patent: September 30, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Kyung Seop Kim, Byeong-Beom Kim, Joon Yong Park, Chang Oh Jeong, Hong Long Ning, Dong Min Lee
  • Patent number: 8847294
    Abstract: There are provided a substrate including an oxide TFT having improved initial threshold voltage degradation characteristics included in a driving circuit of a liquid crystal display (LCD) device, a method for fabricating the same, and a driving circuit for an LCD device using the same. The substrate including an oxide thin film transistor (TFT) includes: a base substrate divided into a pixel region and a driving circuit region; and a plurality of TFTs formed on the base substrate, wherein an initial threshold voltage of at least one of the plurality of TFTs formed in the driving circuit region is positive-shifted to have a predetermined level.
    Type: Grant
    Filed: December 27, 2012
    Date of Patent: September 30, 2014
    Assignee: LG Display Co., Ltd.
    Inventors: TaeSang Kim, Hun Jeoung
  • Patent number: 8841679
    Abstract: Provided is a thin film transistor array panel. The thin film transistor array panel includes: an insulation substrate including a display area with a plurality of pixels and a peripheral area around the display area; a gate line and a data line positioned in the display area of the insulation substrate; a first driving signal transfer line and a second driving signal transfer line positioned in the peripheral area of the insulation substrate; a first insulating layer positioned on the gate line and the data line; and a first photosensitive film positioned on the first driving signal transfer line and the second driving signal transfer line, in which the first photosensitive film is disposed only in the peripheral area.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: September 23, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jae-Yong Shin, Woo-Sung Sohn, Hong Min Yoon, Hui Gyeong Yun
  • Patent number: 8835918
    Abstract: To provide a transistor which includes an oxide semiconductor and is capable of operating at high speed or a highly reliable semiconductor device including the transistor, a transistor in which an oxide semiconductor layer including a pair of low-resistance regions and a channel formation region is provided over an electrode layer, which is embedded in a base insulating layer and whose upper surface is at least partly exposed from the base insulating layer, and a wiring layer provided above the oxide semiconductor layer is electrically connected to the electrode layer or a part of a low-resistance region of the oxide semiconductor layer, which overlaps with the electrode layer.
    Type: Grant
    Filed: September 10, 2012
    Date of Patent: September 16, 2014
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Shunpei Yamazaki, Atsuo Isobe, Toshinari Sasaki
  • Patent number: 8829511
    Abstract: A hybrid thin film transistor includes a first thin film transistor and a second thin film transistor. The first thin film transistor includes a first gate, a first source, a first drain and a first semiconductor layer disposed between the first gate, the first source and the first drain, and the first semiconductor layer includes a crystallized silicon layer. The second thin film transistor includes a second gate, a second source, a second drain and a second semiconductor layer disposed between the second gate, the second source and the second drain, and the second semiconductor layer includes a metal oxide semiconductor layer.
    Type: Grant
    Filed: September 15, 2011
    Date of Patent: September 9, 2014
    Assignee: Au Optronics Corporation
    Inventors: Hsiu-Chun Hsieh, Yi-Wei Chen, Ta-Wei Chiu, Chung-Tao Chen
  • Patent number: 8823104
    Abstract: Methods and structures for semiconductor devices with STI regions in SOI substrates is provided. A semiconductor structure comprises an SOI epitaxy island formed over a substrate. The structure further comprises an STI structure surrounding the SOI island. The STI structure comprises a second epitaxial layer on the substrate, and a second dielectric layer on the second epitaxial layer. A semiconductor fabrication method comprises forming a dielectric layer over a substrate and surrounding a device fabrication region in the substrate with an isolation trench extending through the dielectric layer. The method also includes filling the isolation trench with a first epitaxial layer and forming a second epitaxial layer over the device fabrication region and over the first epitaxial layer. Then a portion of the first epitaxial layer is replaced with an isolation dielectric, and then a device such as a transistor is formed second epitaxial layer within the device fabrication region.
    Type: Grant
    Filed: June 7, 2013
    Date of Patent: September 2, 2014
    Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.
    Inventors: Ming-Hua Yu, Tze-Liang Lee, Pang-Yen Tsai
  • Patent number: 8823005
    Abstract: A thin-film transistor (TFT) and a method of manufacturing the same are disclosed herein. The TFT may include a gate electrode disposed on an insulating substrate, an insulating layer disposed on the insulating substrate and the gate electrode, an active layer pattern disposed on the insulating layer to overlap the gate electrode, a source electrode disposed on the insulating layer and at least part of which overlaps the active layer pattern, and a drain electrode which is separated from the source electrode and at least part of which overlaps the active layer pattern. A first ohmic contact layer pattern may be disposed between the active layer pattern and the source electrode and between the active layer pattern and the drain electrode. The first ohmic contact layer may have higher nitrogen content on its surface than in other portions of the first ohmic contact layer.
    Type: Grant
    Filed: June 23, 2011
    Date of Patent: September 2, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: O-Sung Seo, Seong-Hun Kim, Yang-Ho Bae, Jean-Ho Song
  • Patent number: 8823000
    Abstract: A pixel structure includes a substrate, a gate line, a data line, a semiconductor pattern, a non-metal source electrode pattern, a non-metal drain electrode pattern, and a pixel electrode. The gate line and the data line are disposed on the substrate. The semiconductor pattern is disposed on the gate line, and the semiconductor pattern overlaps two corresponding edges of the gate line along a vertical projective direction. The non-metal source electrode pattern and the non-metal drain electrode pattern are disposed on the semiconductor pattern. The non-metal source electrode pattern and the non-metal drain electrode pattern are respectively disposed on two corresponding edges of the gate line. The non-metal source electrode pattern is partially disposed between the data line and the gate line. The pixel electrode is electrically connected to the non-metal drain electrode pattern.
    Type: Grant
    Filed: April 2, 2012
    Date of Patent: September 2, 2014
    Assignee: Chunghwa Picture Tubes, Ltd.
    Inventors: Kuo-Wei Wu, Chin-Tzu Kao
  • Patent number: 8823046
    Abstract: A light emitting diode (LED) includes a transparent insulating layer; and at least one transparent conductive oxide layer substantially enclosing the transparent insulating layer, wherein the transparent insulating layer and the at least one transparent conductive oxide layer are configured to distribute a current through the LED more concentrated toward a peripheral region of the LED.
    Type: Grant
    Filed: October 15, 2013
    Date of Patent: September 2, 2014
    Assignee: Xiamen Sanan Optoelectronics Technology Co., Ltd.
    Inventors: Qunfeng Pan, Jyh-Chiarng Wu, Kechuang Lin, Shaohua Huang
  • Patent number: 8809861
    Abstract: A transistor is formed having a thin film metal channel region. The transistor may be formed at the surface of a semiconductor substrate, an insulating substrate, or between dielectric layers above a substrate. A plurality of transistors each having a thin film metal channel region may be formed. Multiple arrays of such transistors can be vertically stacked in a same device.
    Type: Grant
    Filed: December 29, 2010
    Date of Patent: August 19, 2014
    Assignee: STMicroelectronics Pte Ltd.
    Inventors: Olivier Le Neel, Ravi Shankar, Calvin Leung
  • Patent number: 8803155
    Abstract: According to an aspect of the present invention, there is provided a thin-film transistor (TFT) sensor, including a bottom gate electrode on a substrate, an insulation layer on the bottom gate electrode, an active layer in a donut shape on the insulation layer, the active layer including a channel through which a current generated by a charged body flows, an etch stop layer on the active layer, the etch stop layer including a first contact hole and a second contact hole, and a source electrode and a drain electrode burying the first and second contact holes, the source and drain electrodes being disposed on the etch stop layer so as to face each other.
    Type: Grant
    Filed: July 19, 2011
    Date of Patent: August 12, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Mu-Gyeom Kim, Chang-Mo Park
  • Patent number: 8803153
    Abstract: A fringe field switching (FFS) liquid crystal display (LCD) device which uses an organic insulating layer and consumes less power, in which film quality of an upper layer of a low temperature protective film is changed to improve undercut within a pad portion contact hole, and a method for fabricating the same is provided.
    Type: Grant
    Filed: January 21, 2014
    Date of Patent: August 12, 2014
    Assignee: LG Display Co., Ltd.
    Inventors: KyoungJin Nam, SeungRyull Park, KyungMo Son, JiHye Lee
  • Patent number: 8803144
    Abstract: The present disclosure relates to a thin film transistor substrate for flat panel display device including oxide semiconductor. The present disclosure suggests a thin film transistor substrate for flat panel display device comprising: a transparent substrate; a thin film transistor layer having an oxide semiconductor material disposed on the transparent substrate; a passivation layer disposed on the whole surface of the thin film transistor layer; a pixel electrode formed on the passivation layer and contact the thin film transistor layer through a contact hole formed at the passivation layer; and a first ultra violet light absorbing layer disposed on the whole surface of the pixel electrode. Absorbing all of ultra violet light and passing all of the visible light, the photo-thermal characteristic is enhanced and the transparency property is not degraded.
    Type: Grant
    Filed: December 21, 2011
    Date of Patent: August 12, 2014
    Assignee: LG Display Co., Ltd
    Inventors: Hoon Yim, Daehwan Kim, Byungkook Choi, Sul Lee
  • Patent number: 8803143
    Abstract: A transistor in a display device is expected to have higher withstand voltage, and it is an object to improve the reliability of a transistor which is driven by high voltage or large current. A semiconductor device includes a transistor in which buffer layers are provided between a semiconductor layer forming a channel formation region and source and drain electrode layers. The buffer layers are provided between the semiconductor layer forming a channel formation region and the source and drain electrode layers in order to particularly relieve an electric field in the vicinity of a drain edge and improve the withstand voltage of the transistor.
    Type: Grant
    Filed: October 12, 2011
    Date of Patent: August 12, 2014
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventor: Shunpei Yamazaki
  • Patent number: 8803149
    Abstract: A hydrogen barrier layer is selectively provided over an oxide semiconductor layer including hydrogen and hydrogen is selectively desorbed from a given region in the oxide semiconductor layer by conducting oxidation treatment, so that regions with different conductivities are formed in the oxide semiconductor layer. After that, a channel formation region, a source region, and a drain region can be formed with the use of the regions with different conductivities formed in the oxide semiconductor layer.
    Type: Grant
    Filed: May 17, 2012
    Date of Patent: August 12, 2014
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventor: Junichiro Sakata
  • Patent number: 8785933
    Abstract: A semiconductor device of the present invention includes a gate electrode which includes a pair of first protrusions and a second protrusion provided between the pair of first protrusions; a gate insulating film covering the gate electrode; a semiconductor film which is in contact with the gate insulating film and overlaps with the pair of first protrusions and the second protrusion; and a pair of electrodes which is in contact with the semiconductor film and overlaps with the pair of first protrusions. The side edges of the semiconductor film are on the outer sides than the top surfaces of the pair of first protrusions in the direction of the channel width of the semiconductor film. The side edges of the pair of electrodes are on the outer sides than the top surfaces of the pair of first protrusions in the direction of the channel width of the semiconductor film.
    Type: Grant
    Filed: February 23, 2012
    Date of Patent: July 22, 2014
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventor: Yuta Endo
  • Patent number: 8785925
    Abstract: There is such an issue with a TFT using an oxide semiconductor film that oxygen deficit is generated in a surface region of the oxide semiconductor film after performing plasma etching of a source-drain electrode, and the off-current becomes increased. Disclosed is the TFT which includes: a gate electrode on an insulating substrate as a substrate; a gate insulating film on the gate electrode; an oxide semiconductor film on the gate insulating film; and a source/drain electrode on the oxide semiconductor film. It is the characteristic of the TFT that a surface layer containing at least either fluorine or chlorine exists in a part of the oxide semiconductor film where the source/drain electrode is not superimposed.
    Type: Grant
    Filed: August 10, 2012
    Date of Patent: July 22, 2014
    Assignee: NLT Technologies, Ltd.
    Inventor: Kazushige Takechi
  • Patent number: 8765522
    Abstract: One embodiment is a method for manufacturing a stacked oxide material, including the steps of forming a first oxide component over a base component, causing crystal growth which proceeds from a surface toward an inside of the first oxide component by first heat treatment to form a first oxide crystal component at least partly in contact with the base component, forming a second oxide component over the first oxide crystal component; and causing crystal growth by second heat treatment using the first oxide crystal component as a seed to form a second oxide crystal component.
    Type: Grant
    Filed: November 22, 2010
    Date of Patent: July 1, 2014
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventor: Shunpei Yamazaki
  • Patent number: 8766268
    Abstract: A thin film transistor (TFT) array panel includes: first and second pixel electrodes neighboring each other; a data line extending between the first and the second pixel electrodes; first and second gate lines extending perpendicularly to the data line; a first TFT including a first gate electrode connected to the first gate line, a first source electrode connected to the data line, and a first drain electrode facing the first source electrode and connected to the first pixel electrode; and a second TFT including a second gate electrode connected to the second gate line, a second source electrode connected to the data line, and a second drain electrode facing the second source electrode and connected to the second pixel electrode. The first source electrode has the same relative position with respect to the first drain electrode as the second source electrode with respect to the second drain electrode.
    Type: Grant
    Filed: August 1, 2013
    Date of Patent: July 1, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Yeo-Geon Yoon, Hyoung-Wook Lee, Mi-Ae Lee, Ho-Jun Lee
  • Patent number: 8766264
    Abstract: An embodiment of the disclosed technology provides a thin film transistor device comprising a source electrode, a drain electrode, a gate electrode, an active layer corresponding to the gate electrode, and a gate insulation layer formed between the gate electrode and the active layer; a concave region corresponding to the gate electrode is provided in the gate insulation layer.
    Type: Grant
    Filed: December 13, 2011
    Date of Patent: July 1, 2014
    Assignees: BOE Technology Group Co., Ltd., Beijing BOE Display Technology Co., Ltd.
    Inventor: Jianfeng Yuan
  • Patent number: 8766255
    Abstract: A semiconductor device in which improvement of a property of holding stored data can be achieved. Further, power consumption of a semiconductor device is reduced. A transistor in which a wide-gap semiconductor material capable of sufficiently reducing the off-state current of a transistor (e.g., an oxide semiconductor material) in a channel formation region is used and which has a trench structure, i.e., a trench for a gate electrode and a trench for element isolation, is provided. The use of a semiconductor material capable of sufficiently reducing the off-state current of a transistor enables data to be held for a long time. Further, since the transistor has the trench for a gate electrode, the occurrence of a short-channel effect can be suppressed by appropriately setting the depth of the trench even when the distance between the source electrode and the drain electrode is decreased.
    Type: Grant
    Filed: March 13, 2012
    Date of Patent: July 1, 2014
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Atsuo Isobe, Toshihiko Saito, Kiyoshi Kato
  • Patent number: 8759834
    Abstract: A display panel includes; a lower gate line, a lower data line disposed substantially perpendicular to the lower gate line, a thin film transistor (“TFT”) connected to the lower gate line and the lower data line, an insulating layer disposed on the lower gate line, the lower data line, and the TFT and having a plurality of trenches exposing the lower gate line and the lower data line, an upper gate line disposed in the trench on the lower gate line, an upper data line disposed in the trench on the lower data line, and a pixel electrode connected to the TFT.
    Type: Grant
    Filed: July 22, 2013
    Date of Patent: June 24, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Joo-Ae Youn, Yang-Ho Bae, Chang-Oh Jeong, Chong-Chul Chai, Pil-Sang Yun, Hong Long Ning, Byeong-Beom Kim
  • Patent number: 8754416
    Abstract: The present invention provides a method of an active-matrix thin film transistor array, comprising of two levels of metallic interconnections formed from one layer of metallic conductor; and thin-film transistors with source, drain and gate electrodes either fully or partially replaced with metal, and wherein the pixel electrodes are polycrystalline silicon.
    Type: Grant
    Filed: November 24, 2006
    Date of Patent: June 17, 2014
    Assignee: The Hong Hong University of Science and Technology
    Inventors: Hoi-Sing Kwok, Man Wong, Zhiguo Meng, Dongli Zhang, Jiaxin Sun, Xiuling Zhu
  • Patent number: 8748891
    Abstract: A manufacturing process of an LCD device of the invention includes forming a first substrate provided with a pixel part with thin film transistors and a seal portion arranged around the pixel part, forming a second substrate opposed to the first substrate, filling a liquid crystal layer between the first substrate and the second substrate, and adhering the first substrate to the second substrate with a sealant provided for the seal portion, wherein the forming the first substrate includes forming a semiconductor layer composing the thin film transistor, forming in the seal portion a semiconductor connection layer made of a same material as the semiconductor layer, and forming an organic interlayer insulating film, wherein the forming the semiconductor layer and the forming the semiconductor connection layer are performed in the same step.
    Type: Grant
    Filed: March 24, 2009
    Date of Patent: June 10, 2014
    Assignee: NLT Technologies, Ltd.
    Inventors: Hideaki Takamatsu, Fumihiko Matsuno
  • Patent number: 8748887
    Abstract: An object is to increase field effect mobility of a thin film transistor including an oxide semiconductor. Another object is to stabilize electrical characteristics of the thin film transistor. In a thin film transistor including an oxide semiconductor layer, a semiconductor layer or a conductive layer having higher electrical conductivity than the oxide semiconductor is formed over the oxide semiconductor layer, whereby field effect mobility of the thin film transistor can be increased. Further, by forming a semiconductor layer or a conductive layer having higher electrical conductivity than the oxide semiconductor between the oxide semiconductor layer and a protective insulating layer of the thin film transistor, change in composition or deterioration in film quality of the oxide semiconductor layer is prevented, so that electrical characteristics of the thin film transistor can be stabilized.
    Type: Grant
    Filed: September 13, 2012
    Date of Patent: June 10, 2014
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Hideaki Kuwabara, Kengo Akimoto, Toshinari Sasaki
  • Patent number: 8748897
    Abstract: An array substrate for an organic electroluminescent display device includes a substrate including a display area and a non-display area; a gate line and a data line; a thin film transistor including a semiconductor layer of polycrystalline silicon, a gate insulating layer, a gate electrode, an inter insulating layer, a source electrode, and a drain electrode; auxiliary lines formed of a same material and on a same layer as the data line; a passivation layer of organic insulating material and including a drain contact hole exposing the drain electrode, and an auxiliary line contact hole exposing one of the auxiliary lines; and a first electrode and a line connection pattern on the passivation layer, wherein the first electrode contacts the drain electrode and the line connection pattern contacts the one of the first auxiliary pattern.
    Type: Grant
    Filed: November 12, 2013
    Date of Patent: June 10, 2014
    Assignee: LG Display Co., Ltd.
    Inventors: Hee-Dong Choi, Seung-Joon Jeon
  • Patent number: 8742425
    Abstract: A thin film transistor array substrate includes a thin film transistor including a gate electrode, an active layer, and source and drain electrodes, a pixel electrode on a same layer as the gate electrode, a lower electrode of a capacitor, the lower electrode being on the same layer as the gate electrode, a first insulating layer on the gate electrode and the lower electrode, a second insulating layer between the active layer and the source and drain electrodes, an upper electrode on the first insulating layer, the upper electrode including a first layer made of a same material as the active layer, and a second layer made of a same material as the source and drain electrodes, and a third insulating layer that covers the source and drain electrodes and the upper electrode and exposes the pixel electrode.
    Type: Grant
    Filed: November 1, 2012
    Date of Patent: June 3, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Sung-Ho Kim, Jong-Moo Huh
  • Patent number: 8742417
    Abstract: According to this disclosure of a thin film transistor array panel and the manufacturing method thereof, dams have a function of forming a light blocking member by an inkjet printing method and are formed along with color filters. Spacers are formed by the inkjet printing method along with the light blocking member and color filters. Advantages of this panel and its manufacturing method are a reduction in an alignment error of the light blocking member and the color filters, reduced manufacturing cost, and a simplified manufacturing.
    Type: Grant
    Filed: January 18, 2012
    Date of Patent: June 3, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Yoon Ho Kang, Sang-Uk Lim, Young-Soo Yoon, Woo Sub Shim
  • Patent number: 8742480
    Abstract: It is an object to provide a wireless chip which can increase a mechanical strength, and a wireless chip with a high durability. A wireless chip includes a transistor including a field-effect transistor, an antenna including a dielectric layer sandwiched between conductive layers, and a conductive layer connecting the chip and the antenna. Further, a wireless chip includes a transistor including a field-effect transistor, an antenna including a dielectric layer sandwiched between conductive layers, a sensor device, a conductive layer connecting the chip and the antenna, and a conductive layer connecting the chip and the sensor device. Moreover, a wireless chip includes a transistor including a field-effect transistor, an antenna including a dielectric layer sandwiched between conductive layers, a battery, a conductive layer connecting the chip and the antenna, and a conductive layer connecting the chip and the battery.
    Type: Grant
    Filed: April 7, 2011
    Date of Patent: June 3, 2014
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Yukie Suzuki, Yasuyuki Arai, Shunpei Yamazaki
  • Patent number: 8742421
    Abstract: An object of the present invention is to provide a display device which can be manufactured with usability of a material improved and with a manufacturing step simplified and to provide a manufacturing technique thereof. One feature of a display device of the present invention is to comprise an insulating layer having an opening, a first conductive layer formed in the opening, and a second conductive layer formed over the insulating layer and the first conductive layer, wherein the first conductive layer is wider and thicker than the second conductive layer, and the second conductive layer is formed by spraying a droplet including a conductive material.
    Type: Grant
    Filed: November 29, 2004
    Date of Patent: June 3, 2014
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Shunpei Yamazaki, Hideaki Kuwabara, Shinji Maekawa, Gen Fujii, Toshiyuki Isa