Multilayer Electrodes Patents (Class 349/147)
  • Patent number: 10539840
    Abstract: A LCD device containing an active drive dot matrix LCD element, each pixel containing subsidiary pixels each having a color filter; a passive drive segment display LCD element laminated on rear side of the active drive LCD element, having segment electrode, arranged to be applied with a set voltage, the segment electrode having edge defining a segment shape; cross-nicol polarizers disposed on both outer sides of the LCD elements; controller circuit including first part controlling voltages to be applied to subsidiary pixels, and second part controlling voltages to be applied to the segment electrode; wherein the display device produce normally black display in the absence of applied voltage; and wherein when the segment electrode is activated, those subsidiary pixels in pixels outside the edge of the activated segment electrode are partly driven and partly not driven, displaying different color or intermediate grade, than the conventional art.
    Type: Grant
    Filed: June 28, 2018
    Date of Patent: January 21, 2020
    Assignee: STANLEY ELECTRIC CO., LTD.
    Inventor: Yoshihisa Iwamoto
  • Patent number: 10481460
    Abstract: An electrode for an electrochromic device includes a resistive layer disposed over a conductive layer. The resistive layer is disposed between the conductive layer and an electrochromic material in the electrochromic device. The electrode reduces non-uniform response of the electrochromic material when the electrochromic device is in operation.
    Type: Grant
    Filed: May 22, 2017
    Date of Patent: November 19, 2019
    Assignee: GENTEX CORPORATION
    Inventors: Michael T. Stephenson, Sue F. Franz, Henry A. Luten, John S. Anderson
  • Patent number: 10330996
    Abstract: A common structure of HVA pads comprises a set of HVA pads for common use. The set of HVA pads includes n clock pads, m DC high potential pads for inputting DC high potentials, a DC low potential pad for inputting a DC low potential, and n clock transferring circuits corresponding to the n clock pads separately. m is a natural number larger than one illustrating the number of chips using in common the set of HVA pads, n is a natural number. The n clock pads are connected separately to the corresponding n clock transferring circuits for inputting corresponding clock signals to the n clock transferring circuits individually. The m DC high potential pads and the DC low potential pad are connected to each the clock transferring circuit for inputting m DC high potentials and a DC low potential to each the clock transferring circuit.
    Type: Grant
    Filed: December 14, 2017
    Date of Patent: June 25, 2019
    Assignee: SHENZHEN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO., LTD.
    Inventor: Tianhong Wang
  • Patent number: 10181545
    Abstract: An object is to provide a semiconductor device including a thin film transistor with excellent electrical characteristics and high reliability and a method for manufacturing the semiconductor device with high mass productivity. A main point is to form a low-resistance oxide semiconductor layer as a source or drain region after forming a drain or source electrode layer over a gate insulating layer and to form an oxide semiconductor film thereover as a semiconductor layer. It is preferable that an oxygen-excess oxide semiconductor layer be used as a semiconductor layer and an oxygen-deficient oxide semiconductor layer be used as a source region and a drain region.
    Type: Grant
    Filed: December 5, 2012
    Date of Patent: January 15, 2019
    Assignee: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
    Inventors: Shunpei Yamazaki, Kengo Akimoto, Shigeki Komori, Hideki Uochi
  • Patent number: 10181482
    Abstract: According to an embodiment of the present disclosure, a method for manufacturing the array substrate includes forming a first transparent conductive layer and a metallic layer successively on a base substrate, and forming a gate electrode, a source electrode, a drain electrode and a first transparent electrode by one patterning process.
    Type: Grant
    Filed: February 24, 2016
    Date of Patent: January 15, 2019
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Zhengliang Li, Qi Yao, Bin Zhang, Zhanfeng Cao, Wei Zhang, Xuefei Sun, Bin Zhou, Jincheng Gao
  • Patent number: 10128453
    Abstract: The present invention provides a method for manufacturing a graphene thin-film transistor, which includes: depositing a graphene layer on a surface of a copper foil; depositing a metal layer on a surface of the graphene layer; attaching a support layer to a surface of the metal layer to form a graphene film; placing the graphene film in a copper etching solution until the copper foil is dissolved completely, then transferring the graphene film to a target substrate, and removing the support layer; defining patterns of a source and a drain on the surface of the metal layer, manufacturing a source electrode and a drain electrode, and manufacturing a gate electrode on a target substrate.
    Type: Grant
    Filed: April 1, 2016
    Date of Patent: November 13, 2018
    Assignee: WUHAN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventor: Xuanyun Wang
  • Patent number: 10050068
    Abstract: A fabrication method of an array substrate, an array substrate, and a display device are provided, the array substrate comprising a pixel region, an alignment region and a pixel test region. The alignment region includes an alignment gate layer, an alignment insulating layer and an alignment pixel electrode layer sequentially formed on a substrate, the pixel test region includes a test gate layer, a test insulating layer and a test pixel electrode layer sequentially formed on the substrate, the alignment gate layer and the test gate layer are disposed on a same layer with the gate layer in the pixel region, the alignment pixel electrode layer and the test pixel electrode layer are disposed on a same layer with the pixel electrode layer in the pixel region.
    Type: Grant
    Filed: November 14, 2013
    Date of Patent: August 14, 2018
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., BEIJING BOE OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventor: Xinyou Ji
  • Patent number: 10032796
    Abstract: A display device includes a pixel portion in which a pixel electrode layer is arranged in a matrix, and an inverted staggered thin film transistor having a combination of at least two kinds of oxide semiconductor layers with different amounts of oxygen is provided corresponding to the pixel electrode layer. In the periphery of the pixel portion in this display device, a pad portion is provided to be electrically connected to a common electrode layer formed on a counter substrate through a conductive layer made of the same material as the pixel electrode layer. One objection of our invention to prevent a defect due to separation of a thin film in various kinds of display devices is realized, by providing a structure suitable for a pad portion provided in a display panel.
    Type: Grant
    Filed: March 8, 2016
    Date of Patent: July 24, 2018
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Shunpei Yamazaki, Kengo Akimoto, Shigeki Komori, Hideki Uochi, Rihito Wada, Yoko Chiba
  • Patent number: 10020424
    Abstract: A display substrate is provided. The display substrate includes a gate electrode disposed on a base; a gate insulating layer disposed on the base and covering the gate electrode; a semiconductor layer disposed on the gate insulating layer and overlapping the gate electrode; a source electrode and a drain electrode disposed on the semiconductor layer and connected to the semiconductor layer; a pixel electrode disposed on the gate insulating layer, connected to the drain electrode, and extending from the drain electrode; a common electrode insulated from the pixel electrode and overlapping the pixel electrode; and a semiconductor pattern disposed between the gate insulating layer and the pixel electrode, the semiconductor pattern overlapping the pixel electrode. The semiconductor pattern comprises a same material as the semiconductor layer and extends from the semiconductor layer.
    Type: Grant
    Filed: March 7, 2017
    Date of Patent: July 10, 2018
    Assignee: Samsung Display Co., Ltd.
    Inventors: Seung Hyun Park, Jun Ho Song, Jean Ho Song, Jae Hak Lee
  • Patent number: 9991397
    Abstract: To provide a semiconductor device that includes an oxide semiconductor and is miniaturized while keeping good electrical properties. In the semiconductor device, an oxide semiconductor layer is surrounded by an insulating layer including an aluminum oxide film containing excess oxygen. Excess oxygen in the aluminum oxide film is supplied to the oxide semiconductor layer including a channel by heat treatment in a manufacturing process of the semiconductor device. Furthermore, the aluminum oxide film forms a barrier against oxygen and hydrogen. It is thus possible to suppress the removal of oxygen from the oxide semiconductor layer surrounded by the insulating layer including an aluminum oxide film, and the entry of impurities such as hydrogen into the oxide semiconductor layer; as a result, the oxide semiconductor layer can be made highly intrinsic. In addition, gate electrode layers over and under the oxide semiconductor layer control the threshold voltage effectively.
    Type: Grant
    Filed: May 1, 2017
    Date of Patent: June 5, 2018
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Shunpei Yamazaki, Hideomi Suzawa, Yutaka Okazaki
  • Patent number: 9773818
    Abstract: It is an object of the present invention to form a pixel electrode and a metal film using one resist mask in manufacturing a stacked structure by forming the metal film over the pixel electrode. A conductive film to be a pixel electrode and a metal film are stacked. A resist pattern having a thick region and a region thinner than the thick region is formed over the metal film using an exposure mask having a semi light-transmitting portion. The pixel electrode, and the metal film formed over part of the pixel electrode to be in contact therewith are formed using the resist pattern. Accordingly, a pixel electrode and a metal film can be formed using one resist mask.
    Type: Grant
    Filed: November 7, 2014
    Date of Patent: September 26, 2017
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventor: Hajime Kimura
  • Patent number: 9736937
    Abstract: The present application relates to a conductive film, a method for manufacturing the same, and a display device including the same.
    Type: Grant
    Filed: October 30, 2014
    Date of Patent: August 15, 2017
    Assignee: LG CHEM, LTD.
    Inventors: Yong Chan Kim, Jin Hyong Lim, Ki-Hwan Kim, Junghwan Yoon, Ilha Lee
  • Patent number: 9666724
    Abstract: To provide a semiconductor device that includes an oxide semiconductor and is miniaturized while keeping good electrical properties. In the semiconductor device, an oxide semiconductor layer is surrounded by an insulating layer including an aluminum oxide film containing excess oxygen. Excess oxygen in the aluminum oxide film is supplied to the oxide semiconductor layer including a channel by heat treatment in a manufacturing process of the semiconductor device. Furthermore, the aluminum oxide film forms a barrier against oxygen and hydrogen. It is thus possible to suppress the removal of oxygen from the oxide semiconductor layer surrounded by the insulating layer including an aluminum oxide film, and the entry of impurities such as hydrogen into the oxide semiconductor layer; as a result, the oxide semiconductor layer can be made highly intrinsic. In addition, gate electrode layers over and under the oxide semiconductor layer control the threshold voltage effectively.
    Type: Grant
    Filed: November 16, 2015
    Date of Patent: May 30, 2017
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Shunpei Yamazaki, Hideomi Suzawa, Yutaka Okazaki
  • Patent number: 9633916
    Abstract: A display panel includes first to third test lines connected to the each of data lines, extending in the second direction, and arranged in the first direction, a first test pad electrically connected to the first test line, the first test pad and the first test line being formed from a same layer, a second test pad electrically connected to the second test line through a contact hole formed through a first insulation layer, and disposed adjacent to the first test pad in the second direction, a third test pad electrically connected to the third test line and disposed adjacent to the first test pad in the first direction, the third test pad and the third test line being formed from a same layer.
    Type: Grant
    Filed: August 12, 2014
    Date of Patent: April 25, 2017
    Assignee: Samsung Display Co., Ltd.
    Inventors: Ji-Yun Hong, Joon-Geol Kim, Jin-Won Lee, Ki-Won Kim
  • Patent number: 9568795
    Abstract: In a liquid crystal display device that uses a TFT, a contact hole is formed to connect an image signal line. An organic film is formed so as to cover the image signal line, and a common electrode, which is a transparent electrode, is formed on the organic film. An interlayer insulating film is formed on the common electrode. A through hole is formed in the interlayer insulating film, and the diameter of the through hole is greater than the diameter of the contact hole.
    Type: Grant
    Filed: July 7, 2015
    Date of Patent: February 14, 2017
    Assignee: Japan Display Inc.
    Inventors: Takao Nakamura, Kazuki Ishii, Daisuke Mutou, Hidenori Seki
  • Patent number: 9385142
    Abstract: A liquid crystal display includes: an insulation substrate, a gate line disposed on the insulation substrate, a first field generating electrode disposed on the insulation substrate, a gate insulating layer disposed on the gate line and the first field generating electrode, a semiconductor disposed on the gate insulating layer and a data line disposed on the gate insulating layer. A value [N—H]/[Si—H] of the gate insulating layer is in a range of about 13 to about 25. Here, the value [N—H]/[Si—H] means a ratio of a bonding number [N—H] of nitrogen and hydrogen to a bonding number [Si—H] of silicon and hydrogen according to an analysis of an FT-IR spectrometer.
    Type: Grant
    Filed: October 28, 2013
    Date of Patent: July 5, 2016
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Jung Yun Jo, Chang Ok Kim
  • Patent number: 9305787
    Abstract: A method of manufacturing an electric component disclosed. A first electrically conducting layer including a first electrode of the electric component is formed on a substrate. An interlayer of a dielectric material is formed on the first electrically conducting layer, the dielectric material including an electrically insulating material. A further layer of a dielectric material is deposited on the interlayer of dielectric material, the further layer including a photo-patternable electrically insulating material. Both the further layer and said interlayer are structured, wherein the further layer of the dielectric material is used as a mask for the interlayer. A second electrically conducting layer including a second electrode of the electric component is then formed.
    Type: Grant
    Filed: December 19, 2013
    Date of Patent: April 5, 2016
    Assignee: Creator Technology B.V.
    Inventors: Christoph Wilhelm Sele, Monica Johanna Beenhakkers, Gerwin Hermanus Gelinck, Nicolaas Aldegonda Jan Maria Van Aerle, Hjalmar Edzer Ayco Huitema
  • Patent number: 9274630
    Abstract: The present disclosure relates to the technical field of liquid crystal display, and particularly, relates to a built-in touch liquid crystal display device. The device is further provided with a touch sensing line, and at least in a part of the pixel units, a touch capacitor and a touch switch located between the touch capacitor and the touch sensing line and capable of connecting or disconnecting the both are arranged in correspondence to at least one pixel subunit, and wherein the voltage difference of the touch capacitor can be transferred to the touch sensing line. According to the present disclosure, the existing pressing capacitive built-in touch device is improved. In this way, the defects of this type of device existing before can be overcome. With the pixel aperture ratio improved, the pressing capacitive built-in touch technology can be applied to large-sized panels, and the touch driving circuit is simplified.
    Type: Grant
    Filed: January 23, 2014
    Date of Patent: March 1, 2016
    Assignee: SHENZHEN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventor: Xiangyang Xu
  • Patent number: 9261743
    Abstract: Disclosed is an LCD device having a dual link structure and a method of manufacturing the same, which can reduce a width of a bezel. A link line structure includes a plurality of first and second link lines which are alternately disposed. The first and second link lines are formed on different layers. Also, embodiments herein provide a method which can reduce the number of masks used in a manufacturing process and can easily manufacture the LCD device in consideration of the possibility of misalignment of exposure equipment.
    Type: Grant
    Filed: June 27, 2013
    Date of Patent: February 16, 2016
    Assignee: LG Display Co., Ltd.
    Inventors: Je Hyung Park, Tae Yong Jung
  • Patent number: 9117732
    Abstract: Disclosed is a display device including a transistor showing extremely low off current. In order to reduce the off current, a semiconductor material whose band gap is greater than that of a silicon semiconductor is used for forming a transistor, and the concentration of an impurity which serves as a carrier donor of the semiconductor material is reduced. Specifically, an oxide semiconductor whose band gap is greater than or equal to 2 eV, preferably greater than or equal to 2.5 eV, more preferably greater than or equal to 3 eV is used for a semiconductor layer of a transistor, and the concentration of an impurity which serves as a carrier donor included is reduced. Consequently, the off current of the transistor per micrometer in channel width can be reduced to lower than 10 zA/?m at room temperature and lower than 100 zA/?m at 85° C.
    Type: Grant
    Filed: October 16, 2014
    Date of Patent: August 25, 2015
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventor: Shunpei Yamazaki
  • Patent number: 9057920
    Abstract: An object of the present invention is to provide a transflective liquid crystal display device having an excellent visibility obtained by optimizing the arrangement of a color filter, which would become a problem in the process of fabricating transparent and reflective liquid crystal display devices, for the transflective liquid crystal display device. In the present invention, the arrangement of a color filter is optimized for improving the visibility of the transflective liquid crystal display device. In addition, the structure, which allows the formation of color filters without increasing the capacitance that affects on a display, is fabricated. Furthermore, in the process of fabricating the transflective liquid crystal display device, an uneven structure is additionally formed without particularly increasing an additional patterning step for the formation of such an uneven structure.
    Type: Grant
    Filed: October 8, 2009
    Date of Patent: June 16, 2015
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Shingo Eguchi, Yutaka Shionoiri
  • Patent number: 9054138
    Abstract: It is an object to manufacture and provide a highly reliable display device including a thin film transistor with a high aperture ratio which has stable electric characteristics. In a manufacturing method of a semiconductor device having a thin film transistor in which a semiconductor layer including a channel formation region is formed using an oxide semiconductor film, a heat treatment for reducing moisture and the like which are impurities and for improving the purity of the oxide semiconductor film (a heat treatment for dehydration or dehydrogenation) is performed. Further, an aperture ratio is improved by forming a gate electrode layer, a source electrode layer, and a drain electrode layer using conductive films having light transmitting properties.
    Type: Grant
    Filed: September 15, 2014
    Date of Patent: June 9, 2015
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Shunpei Yamazaki, Masayuki Sakakura
  • Patent number: 9048325
    Abstract: An object is to reduce parasitic capacitance of a signal line included in a liquid crystal display device. A transistor including an oxide semiconductor layer is used as a transistor provided in each pixel. Note that the oxide semiconductor layer is an oxide semiconductor layer which is highly purified by thoroughly removing impurities (hydrogen, water, or the like) which become electron suppliers (donors). Thus, the amount of leakage current (off-state current) can be reduced when the transistor is off. Therefore, a voltage applied to a liquid crystal element can be held without providing a capacitor in each pixel. In addition, a capacitor wiring extending to a pixel portion of the liquid crystal display device can be eliminated. Therefore, parasitic capacitance in a region where the signal line and the capacitor wiring intersect with each other can be eliminated.
    Type: Grant
    Filed: July 18, 2013
    Date of Patent: June 2, 2015
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Toshikazu Kondo, Jun Koyama, Shunpei Yamazaki
  • Patent number: 9001299
    Abstract: A low-resistance wiring structure and a liquid crystal display are disclosed. The liquid crystal display includes a first substrate; a thin film transistor (TFT) formed on the first substrate and formed of a gate wiring, a data wiring and a semiconductor layer; and a second substrate attached to the first substrate in a facing manner, wherein at least one of the gate wiring and the data wiring is formed as a first wiring made of copper, a second wiring made of a barrier metal preventing spreading of copper, and a metal oxide film pattern formed between the first and second wirings. A MO/Cu wiring structure is implemented by using pure molybdenum, so that the low-resistance wiring structure with high reliability can be formed at a low cost.
    Type: Grant
    Filed: December 17, 2008
    Date of Patent: April 7, 2015
    Assignee: LG Display Co., Ltd.
    Inventors: Hee-Jung Yang, Gyu-Won Han
  • Patent number: 8988637
    Abstract: To suppress light leakage at the time of dark state, and to provide a liquid crystal display device whose electrodes in the reflection areas can be formed with high precision. The liquid crystal display device has a reflection area within a pixel unit by corresponding at least to a reflection plate forming part, and the reflection area is driven with a lateral electric field mode and normally-white. A driving electrode for forming an electric field to a liquid crystal layer of the reflection area is formed on the reflection plate via an insulating film by using a non-transparent electric conductor.
    Type: Grant
    Filed: June 17, 2013
    Date of Patent: March 24, 2015
    Assignee: NLT Technologies, Ltd.
    Inventors: Kenichi Mori, Michiaki Sakamoto, Ken Sumiyoshi, Hiroshi Nagai, Kenichirou Naka, Masayuki Jumonji, Hiroshi Tanabe
  • Patent number: 8969875
    Abstract: The present invention relates to a thin film transistor substrate and method for fabricating the same which can secure an alignment margin and reduce the number of mask steps. A thin transistor substrate according to the present invention includes a gate line and a data line crossing each other to define a pixel, a gate metal pattern under the data line, a thin film transistor having a gate electrode, a source electrode and a drain electrode in the pixel, and a pixel electrode connected to the drain electrode of the thin film transistor by a connection electrode, wherein the data line has a plurality of first slits to disconnect the gate metal pattern from the gate line.
    Type: Grant
    Filed: October 17, 2012
    Date of Patent: March 3, 2015
    Assignee: LG Display Co., Ltd.
    Inventor: Seung Hee Nam
  • Patent number: 8964134
    Abstract: In one embodiment, a liquid crystal display device includes an array substrate having a sensor electrode and a plurality of pixel electrodes, and a counter substrate facing the array substrate. The sensor electrode includes an electric conductive oxide layer, a first electric conductive layer arranged on the electric conductive oxide layer and formed of one metal selected from the group consisting of molybdenum (Mo), titanium (Ti), nickel (nickel), and chromium (Cr), and a second electric conductive layer arranged on the first electric conductive layer and formed of aluminum. The plurality of pixel electrodes is arranged on the sensor electrode in a matrix shape so as to face the electric conductive oxide layer. Each pixel electrode is provided with slits. The thickness of the first electric conductive layer is equal to or less than 10% of the thickness of the second electric conductive layer.
    Type: Grant
    Filed: February 26, 2013
    Date of Patent: February 24, 2015
    Assignee: Japan Display Inc.
    Inventor: Yasuo Naoe
  • Patent number: 8953131
    Abstract: The touch sensor according to a preferred embodiment of the present invention includes: a transparent substrate; and an electrode formed on the transparent substrate in a mesh pattern, wherein the electrode has a line width of one side smaller than that of the other side in a thickness direction.
    Type: Grant
    Filed: March 5, 2013
    Date of Patent: February 10, 2015
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Jang Ho Park, Jung Ryoul Yim, In Hyun Jang
  • Patent number: 8953133
    Abstract: An IPS mode LCD device includes gate and data lines on a first substrate and crossing to define pixel regions; a thin film transistor connected to the gate lines and the data lines; a first common electrode and a pixel electrode on the first substrate and alternating with each other in each pixel region, each of the first common electrode and the pixel electrode including lower and upper layers; a color filter layer including red, green and blue color filter patterns and on a second substrate, the color filter patterns corresponding to each pixel region; and a liquid crystal layer between the first and second substrates, wherein at least two of the color filter patterns overlap at a boundary of the pixel regions, and wherein the lower layer is made of MoTi, and the upper layer is made of a transparent conductive material or copper nitride.
    Type: Grant
    Filed: July 17, 2012
    Date of Patent: February 10, 2015
    Assignee: LG Display Co., Ltd.
    Inventors: Hang-Sup Cho, Young-Sup Jung, Jeong-Yun Lee
  • Patent number: 8933460
    Abstract: A method of manufacturing an array substrate for an FFS mode LCD device includes forming a gate line, a gate electrode and a pixel electrode on a substrate; forming a gate insulating layer; forming a data line, source and drain electrodes, and a semiconductor layer on the gate insulating layer, the drain electrode overlapping the pixel electrode; forming a passivation layer on the data line, the source and drain electrodes; forming a contact hole exposing the drain electrode and the pixel electrode by patterning the passivation layer and the gate insulating layer; and forming a common electrode and a connection pattern on the passivation layer, wherein the common electrode includes bar-shaped openings and a hole corresponding to the contact hole, and the connection pattern is disposed in the hole, is spaced apart from the common electrode and contacts the drain electrode and the pixel.
    Type: Grant
    Filed: June 11, 2014
    Date of Patent: January 13, 2015
    Assignee: LG Display Co., Ltd.
    Inventors: Jeong-Oh Kim, Jung-Sun Beak
  • Patent number: 8928845
    Abstract: The present invention is directed to the provision of a liquid crystal optical element that can accurately change the numerical aperture of an objective lens regardless of variations in temperature or wavelength. The liquid crystal optical element comprises a first substrate, a second substrate, a liquid crystal provided between the first and second substrates, an electrode pattern formed on one of the first and second substrates and having an aperture control region, and an opposite electrode formed on the other one of the first and second substrates, the opposite electrode being opposed to the electrode pattern for applying a voltage therebetween, wherein a plurality of electrodes, for changing refractive index and thereby causing the incident light passing through the aperture control region to diverge, are formed in the aperture control region.
    Type: Grant
    Filed: April 21, 2006
    Date of Patent: January 6, 2015
    Assignee: Citizen Holdings Co., Ltd.
    Inventor: Nobuyuki Hashimoto
  • Patent number: 8891050
    Abstract: A liquid crystal display device is disclosed. The liquid crystal display device includes: a substrate; gate and data lines arranged to cross each other on the substrate and to define a pixel region; a switching element disposed at an intersection of the gate and data lines; and pixel electrodes and common electrodes arranged alternately with each other and parallel to the data line, within the pixel region. The pixel electrode and the common electrode are formed to have a stacked layer structure of a transparent conductive material layer and an opaque metal layer, each having a line-width of 3.5 ?m or less. Such a liquid crystal display device can enhance the transmittance of a pixel region with preventing the chuck stain by forming electrodes in a double layer structure with a transparent conductive material layer and an opaque metal layer.
    Type: Grant
    Filed: May 1, 2012
    Date of Patent: November 18, 2014
    Assignee: LG Display Co., Ltd.
    Inventors: Kang Il Kim, Jung Il Lee, Jung Ho Son
  • Patent number: 8879038
    Abstract: The present invention discloses an array substrate, a liquid crystal display device and a manufacturing method of array substrate; an array substrate comprises a plurality of thin film transistors and a first pixel electrode connected with the drain electrode of the thin film transistor, wherein the array substrate also comprises a second pixel electrode which is arranged on the bottom of the first pixel electrode and forms mutual insulation with the first pixel electrode; The present invention can increase the penetration rate of the pixel, improve the visual color cast characteristic of a panel, and reduce uneven brightness caused by variation of electrode wire width.
    Type: Grant
    Filed: December 4, 2011
    Date of Patent: November 4, 2014
    Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd.
    Inventor: Chenghung Chen
  • Patent number: 8860028
    Abstract: Disclosed are a thin film transistor substrate and a method of fabricating the same in which the number of processes is reduced. The method includes forming a first conductive pattern including gate electrodes and gate lines on a substrate through a first mask process, depositing a gate insulating film and forming a second conductive pattern including a semiconductor pattern, source and drain electrodes and data lines through a second mask process, depositing first and second passivation films and forming pixel contact holes passing through the first and second passivation films and exposing the drain electrodes through a third mask process, and forming a third conductive pattern including a common electrode and a common line and forming a third passivation film formed in an undercut structure with the common electrode through a fourth mask process, simultaneously, and forming a fourth conductive pattern including pixel electrodes through a lift-off process.
    Type: Grant
    Filed: September 10, 2012
    Date of Patent: October 14, 2014
    Assignee: LG Display Co., Ltd.
    Inventor: Hee-Young Kwack
  • Patent number: 8854589
    Abstract: A conducting film or device electrode includes a substrate and two transparent or semitransparent conductive layers separated by a transparent or semitransparent intervening layer. The intervening layer includes electrically conductive pathways between the first and second conductive layers to help reduce interfacial reflections occurring between particular layers in devices incorporating the conducting film or electrode.
    Type: Grant
    Filed: May 22, 2012
    Date of Patent: October 7, 2014
    Assignee: 3M Innovative Properties Company
    Inventors: Manoj Nirmal, Stephen P. Maki, Jason C. Radel, Robert L. Brott, Donald J. McClure, Clark I. Bright
  • Patent number: 8848125
    Abstract: An array substrate for a liquid crystal display device includes a substrate, a thin film transistor having a signal line of dual layered structure of a copper compound and copper, and a pixel electrode connected to the thin film transistor.
    Type: Grant
    Filed: August 23, 2011
    Date of Patent: September 30, 2014
    Assignee: LG Display Co., Ltd.
    Inventors: Gee-Sung Chae, Gyoo-Chul Jo, Yong-Sup Hwang
  • Publication number: 20140267961
    Abstract: The present invention relates to an image display device using a diffractive lens. An image display device according to an exemplary embodiment of the present invention includes a display panel displaying an image, and a diffractive lens for the image of the display panel to be recognized as a two-dimensional (2D) image or a three-dimensional (3D) image, wherein the diffractive lens modifies a path of light by using an optical principle of a Fresnel zone plate.
    Type: Application
    Filed: June 2, 2014
    Publication date: September 18, 2014
    Applicant: Samsung Display Co., Ltd.
    Inventors: Seung Jun Jeong, Kyung-Ho Jung, Seung-Hoon Lee, Hee-Seop Kim, Hae-Young Yun, Hwi Kim, Il-Joo Kim, Kyung-Bae Kim, Jung-Hwan Yi
  • Patent number: 8817216
    Abstract: A liquid crystal display device with a built-in touch screen comprising a substrate having a pixel region, a thin film transistor formed at the pixel region, the thin film transistor including at least an active layer, a gate electrode, an insulating layer, and a data electrode, a first passivation layer formed on the thin film transistor, a first contact hole formed through a portion of the first passivation layer to expose the data electrode, a common electrode formed on at least one portion of the first passivation layer including inside the first contact hole, the common electrode operable to sense touch, a conductive line formed on at least one portion of the first passivation layer including inside the first contact hole, a second passivation layer formed on the common electrode and the conductive line, a second contact hole formed through a portion of the second passivation layer to expose the conductive line corresponding to the data electrode, and a pixel electrode electrically connected with the con
    Type: Grant
    Filed: August 4, 2011
    Date of Patent: August 26, 2014
    Assignee: LG Display Co., Ltd.
    Inventors: Kum Mi Oh, Han Seok Lee
  • Patent number: 8810764
    Abstract: To provide a structure for achieving high transmittance in a lateral-electric-field mode liquid crystal display device through stably controlling the domains in the terminal parts of comb-shaped electrodes where the liquid crystal molecules rotate in the reverse direction. In the lateral-electric-field mode liquid crystal display device in which common electrodes and pixel electrodes are formed on a same layer, a protrusion part is provided in a direction in an obtuse angle with the comb-shaped electrode and substantially in parallel to a scan line in the terminal part of the comb-shaped electrode of the pixel electrode or the common electrode, a floating electrode is extended in the extending direction of the comb-shaped electrode to overlap with the comb-shaped electrode in the terminal part, and a liquid crystal reverse rotation locked structure is formed with the protrusion part of the comb-shaped electrode and the floating electrode.
    Type: Grant
    Filed: January 19, 2011
    Date of Patent: August 19, 2014
    Assignee: NLT Technologies, Ltd.
    Inventors: Shinichi Nishida, Takayuki Konno, Taku Kawasaki
  • Patent number: 8808837
    Abstract: A flexible film is provided. The flexible film includes a dielectric film, a metal layer disposed on the dielectric film, and at least one hole formed through the dielectric film and the metal layer. Therefore, it is possible to facilitate the alignment of circuit patterns on a flexible film with an electrode of a panel of a display device or a circuit of a driving unit of a display device.
    Type: Grant
    Filed: May 22, 2008
    Date of Patent: August 19, 2014
    Assignee: LG Electronics Inc.
    Inventors: Sang Gon Lee, Dae Sung Kim, Woo Hyuck Chang
  • Patent number: 8804061
    Abstract: Disclosed embodiments relate to signal routings for use in a display device. The display device may include a liquid crystal display (LCD) panel having multiple pixels arranged in rows and columns. Each of the pixels includes a pixel electrode and a thin-film transistor (TFT). The LCD may include a conductive signal routing portion having a first metallic layer, a second metallic layer formed directly on the first metallic layer, and a third metallic layer formed directly on the second metallic layer. The first metallic layer may include a contact terminal. The second metallic layer when combined with the third metallic layers may decrease the resistance of the third metallic layer.
    Type: Grant
    Filed: May 22, 2012
    Date of Patent: August 12, 2014
    Assignee: Apple Inc.
    Inventors: Ting-Kuo Chang, Shih-Chang Chang, Abbas Jamshidi Roudbari, Cheng-Ho Yu
  • Patent number: 8797471
    Abstract: A liquid crystal display device includes a first substrate and a second substrate which sandwiches a liquid crystal between itself and the first substrate, wherein the first substrate has thin film transistors and a wiring connection portion in which are formed terminals connected to the thin film transistors, a wiring substrate connected to the terminals is disposed in the wiring connection portion, the second substrate is a plastic substrate, and has an adhesive layer and an inorganic insulating layer formed on top of the adhesive layer, and the adhesive layer covers the wiring connection portion and one portion of the wiring substrate.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: August 5, 2014
    Assignees: Japan Display Inc., Panasonic Liquid Crystal Display Co., Ltd.
    Inventors: Hitoshi Azuma, Susumu Sasaki, Tomio Yaguchi, Takao Ebine, Katsuyuu Takahashi, Shoichi Uchino, Akiko Iwata
  • Patent number: 8754995
    Abstract: A liquid-crystal display includes scan lines arranged on a substrate and also functioning as a gate of a thin-film transistor, a main line arranged between the scan lines, source lines arranged in a direction intersecting the scan lines, a picture-element electrode arranged between the source lines and between the scan lines, a storage capacitor formed with the main line, an insulation layer, and an intermediate electrode, a drain line connected to a drain of the thin-film transistor and the intermediate electrode. The main line includes a first transparent electrode and a first metallic line, which is formed on the first transparent electrode, is narrower and has a lower resistance than the first transparent electrode. The drain line includes a second transparent electrode and a second metallic line which is narrower and has a lower resistance than the second transparent electrode. The intermediate electrode is formed by extending the second transparent electrode.
    Type: Grant
    Filed: October 14, 2009
    Date of Patent: June 17, 2014
    Assignee: Sony Corporation
    Inventors: Hiroki Takahashi, Yoji Nagase
  • Patent number: 8743333
    Abstract: The present invention provides a liquid crystal display device having gate wires and source/drain wires with a multilayer structure made of the same material which can be manufactured at low cost, as well as a manufacturing method for the same. In accordance with the manufacturing method, a wet etching process is carried out on the gate wires and the source/drain wires using an etchant including hydrofluoric acid and an oxidant, and the concentration of hydrofluoric acid in the etchant is different between the etchant for the gate wires and that for the source/drain wires.
    Type: Grant
    Filed: January 20, 2011
    Date of Patent: June 3, 2014
    Assignees: Japan Display Inc., Panasonic Liquid Crystal Display Co., Ltd.
    Inventors: Daisuke Sonoda, Toshiki Kaneko, Hideo Tanabe
  • Patent number: 8717530
    Abstract: An embodiment of the invention provides an array substrate for a liquid crystal display comprising a substrate and a gate scanning line, a thin film transistor, a data line, and a passivation layer on the substrate, the passivation layer covering the gate scanning line, the thin film transistor, the data line, and a through hole being formed in the passivation layer. A pixel electrode is formed on the passivation layer and comprises a transmissive part and a reflective part, the transmissive part comprises an amorphous-type indium tin oxide film and a poly-type indium tin oxide film below the amorphous-type indium tin oxide film, and the reflective part comprises the poly-type indium tin oxide film and a metal film covering the poly-type indium tin oxide film.
    Type: Grant
    Filed: November 25, 2008
    Date of Patent: May 6, 2014
    Assignee: Beijing Boe Optoelectronics Technology Co., Ltd.
    Inventor: Seongyeol Yoo
  • Patent number: 8711315
    Abstract: An LCD includes a first substrate, a second substrate, a liquid crystal layer between the first and second substrates, first and second alignment films respectively disposed on the first and second substrates. The first substrate comprises multiple scanning lines and multiple data lines intercrossed with the multiple scanning lines to define multiple pixel areas. Each pixel area comprises multiple electrically interconnected first electrodes and multiple electrically interconnected second electrodes. The first electrodes and the second electrodes are disposed on different layers and mutually intersected to define multiple sub-pixel areas. Each sub-pixel area further comprises two protrusion-shaped patterns facing each other on two adjacent first electrodes where the first electrodes and the second electrodes are not overlapped.
    Type: Grant
    Filed: July 26, 2012
    Date of Patent: April 29, 2014
    Assignee: Infovision Optoelectronics(Kunshan)Co., Ltd.
    Inventors: Te-Chen Chung, Yongqian Li, Wenjun Dai, Chia-Te Liao
  • Patent number: 8698157
    Abstract: A capacitance element includes a first capacitance electrode formed over a TFT with a insulating interlayer therebetween, and a second capacitance electrode formed so as to oppose the first capacitance electrode with a first dielectric layer therebetween, the second capacitance electrode being electrically connected to a semiconductor layer of the TFT through a contact hole formed in the insulating interlayer. The second capacitance electrode includes a first conductive layer and a second conductive layer stacked on the first conductive layer. A portion of the first conductive layer overlapping the contact hole is removed, and the second conductive layer and the semiconductor layer are electrically connected to each other through the contact hole.
    Type: Grant
    Filed: September 13, 2012
    Date of Patent: April 15, 2014
    Assignee: Seiko Epson Corporation
    Inventor: Yoshikazu Hanamura
  • Patent number: 8665386
    Abstract: A method for fabricating is provided for a liquid crystal display device capable of decreasing the number of masks used to fabricate a thin film transistor (TFT) by forming an active pattern and a storage electrode by a single mask process, by simultaneously patterning a pixel electrode at the time of a gate line patterning, and by using only an organic insulation layer having a low dielectric constant.
    Type: Grant
    Filed: August 17, 2012
    Date of Patent: March 4, 2014
    Assignee: LG Display Co., Ltd.
    Inventors: Young-Joo Kim, Seok-Woo Lee
  • Patent number: RE44817
    Abstract: A method of forming an oxide film on a surface of a copper alloy, including the steps of providing a copper alloy including copper and an element selected from the group consisting of Mn, Zn, Ga, Li, Ge, Sr, Ag, Ba, Pr and Nd, and diffusing atoms of the element to a surface of the copper alloy so as to form an oxide film on the surface of the copper alloy, wherein a concentration of the element in the copper alloy is more than 0.1 and not more than 20 atomic percentage and within a solubility limit of the element in the copper.
    Type: Grant
    Filed: August 24, 2012
    Date of Patent: March 25, 2014
    Assignee: Altiam Services Ltd. LLC
    Inventor: Junichi Koike
  • Patent number: RE46609
    Abstract: A backlight device that illuminates a transmissive liquid crystal panel is disclosed. The device includes: a plurality of light source substrates on which a plurality of light emitting devices irradiating illumination light are mounted; a bottom chassis having one surface to which the plurality of light source substrates are attached; a reflector having openings corresponding to the light emitting devices and through which the light emitting devices are exposed to one surface side, and reflecting the illumination light irradiated from the light emitting devices; a diffuser facing the one surface side of the reflector through a predetermined facing interval and internally diffusing the illumination light incident from the reflector; and an optical function sheet laminate combined with the diffuser on one surface side thereof, containing a stack of a plurality of optical function sheets and guiding the illumination light to the transmissive liquid crystal panel.
    Type: Grant
    Filed: February 20, 2013
    Date of Patent: November 14, 2017
    Assignee: SATURN LICENSING LLC.
    Inventor: Mitsuhiro Kawase