With Particular Switching Device Patents (Class 349/41)
  • Patent number: 8497948
    Abstract: A pixel structure includes a first patterned metal layer, a gate insulating layer, a semiconductor channel layer, a second patterned metal layer, a passivation layer, and a conducting layer. A gate line of the second patterned metal layer is electrically connected by the conducting layer to a gate extension electrode of the first patterned metal layer. A source electrode of the second patterned metal layer is electrically connected by the conducting layer to a second data line segment of the first patterned metal layer. A method for fabricating a pixel structure is also disclosed herein.
    Type: Grant
    Filed: October 3, 2012
    Date of Patent: July 30, 2013
    Assignee: AU Optronics Corporation
    Inventor: Hsiang-Lin Lin
  • Patent number: 8487849
    Abstract: A liquid crystal display includes an array of pixels. Each pixel is divided into a first sub-pixel and a second sub-pixel, and different data voltages are separately applied to (or evolved at) the two sub-pixels, thereby enhancing the lateral side visibility. Each sub-pixel includes a sub-pixel electrode (connected to the drain electrode of a sub-pixel's switching element) overlapped with the sub-pixel's storage electrode. A first predetermined voltage is applied to the first sub-pixel and second predetermined voltage is applied the second sub-pixel, and thus the first sub-pixel electrode may receive a voltage lower than the voltage of the second sub-pixel electrode. The first sub-pixel electrode may be larger in area than the second sub-pixel electrode. The overlapping area between the first drain electrode and the storage electrode of a first sub-pixel may be larger than the overlapping area between the drain electrode and the storage electrode of a second sub-pixel.
    Type: Grant
    Filed: May 25, 2011
    Date of Patent: July 16, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventor: Dong-Gyu Kim
  • Publication number: 20130176514
    Abstract: The present invention provides a pixel structure of a display apparatus. The pixel structure is disposed on a substrate of the display apparatus. The pixel structure comprises pixel electrode and at least one switching element electrically connected to the pixel electrode. The switching element comprises a first electrode including an opening, and a second electrode including a bend extension portion, wherein the bend extension portion extends into the opening of the first electrode. The present invention can improve the problems existing in a conventional optically compensated birefringence (OCB) mode liquid crystal display.
    Type: Application
    Filed: July 19, 2012
    Publication date: July 11, 2013
    Applicant: HANNSTAR DISPLAY CORPORATION
    Inventors: Ko-ruey Jen, Chao-hui Wu
  • Patent number: 8482690
    Abstract: An object is to provide a liquid crystal display device in which a pixel including a thin film transistor using an oxide semiconductor has a high aperture ratio. The liquid crystal display device includes a plurality of pixels each including a thin film transistor and a pixel electrode. The pixel is electrically connected to a first wiring functioning as a scan line. The thin film transistor includes an oxide semiconductor layer over the first wiring with a gate insulating film therebetween. The oxide semiconductor layer is extended beyond the edge of a region where the first wiring is provided. The pixel electrode and the oxide semiconductor layer overlap with each other.
    Type: Grant
    Filed: October 4, 2010
    Date of Patent: July 9, 2013
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Ryo Arasawa, Hideaki Shishido
  • Publication number: 20130162924
    Abstract: The disclosure generally relates to optical elements such as switchable privacy filters useful for displaying information in at least two modes. In the first mode, the viewing angle can be limited to restrict viewing to near-normal orientations. In the second mode, the viewing angle can be increased so that the information can be viewed at larger oblique angles. The disclosure also relates to switchable privacy displays that include the switchable privacy filters.
    Type: Application
    Filed: August 8, 2011
    Publication date: June 27, 2013
    Applicant: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Hassan Sahouani, Marie A. Boulos, John J. Stradinger
  • Publication number: 20130155340
    Abstract: The present, invention relates to liquid crystal compositions having a smectic A structure for use in an optical device in which the composition is sandwiched between a pair of electrodes (12-15). In essence the composition includes a siloxane oligomer (component (a)) which may be seen to construct a layered SmA system of particular spacing and “strength”. Within this structure a low molar mass nematic mesogen (component (c)) is provided that may be considered to be that of a “plasticiser” which moderates the layer “strength”, while simultaneously providing tuneability to the properties of the composition, e.g. its refractive index or dielectric anisotropy. The addition of a side chain liquid crystal polysiloxane (component (d)) allows such systems to be further moderated since they can be considered as binding together the la>¾rs, both within a given layer and between layers.
    Type: Application
    Filed: March 15, 2011
    Publication date: June 20, 2013
    Inventors: Terry Victor Clapp, William Alden Crossland, Anthony Bernard Davey, Martin Grasmann, Jonathan Paul Hannington, Russell Keith King, Mikhael Pivnenko, Steven Robson, Huan Xu
  • Patent number: 8462287
    Abstract: An active matrix substrate capable of suppressing a change in an off characteristic of the TFT even when current passage time becomes longer is provided. A diode is connected between a video signal line and a conductive plate formed so as to cover a TFT of a pixel formation portion. Current is passed to the diode when a potential of a video signal applied to the video signal line is lower than that of the conductive plate, and the potential of the conductive plate becomes equal to that of the video signal line. No current flows when the potential of the video signal is higher than that of the conductive plate and the potential of the diode remains the same. Consequently, a leak current which flows from the pixel electrode of the pixel formation portion to the video signal line when the TFT is in the off state is suppressed.
    Type: Grant
    Filed: August 19, 2009
    Date of Patent: June 11, 2013
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Takashi Morimoto, Mitsuaki Hirata
  • Patent number: 8456581
    Abstract: A liquid crystal display includes an array substrate which includes a plurality of signal lines, a plurality of scanning lines, a plurality of auxiliary capacitive lines, a plurality of pixels, an auxiliary capacitive line driving circuit, a logic circuit, a first auxiliary capacitive voltage supply line, a second auxiliary capacitive voltage supply line, and a power supply line, an opposite substrate, and a liquid crystal layer. Each of the pixels includes a switching element, a pixel electrode, and an auxiliary capacitive element. A first common line and a second common line are connected to each other on one end side and are in a non-connected state in parts other than the part on the one end side. A common voltage is supplied to the first common line and the second common line from the one end side.
    Type: Grant
    Filed: July 2, 2009
    Date of Patent: June 4, 2013
    Assignee: Toshiba Mobile Display Co., Ltd.
    Inventor: Hiroyuki Kimura
  • Patent number: 8451393
    Abstract: A liquid crystal display includes: a plurality of signal lines disposed on a substrate, a pixel electrode connected to the plurality of signal lines and including a first subpixel electrode and a second subpixel electrode, a common electrode facing the pixel electrode, a liquid crystal layer disposed between the pixel electrode and the common electrode and a step-up capacitor connected between an output terminal of a switching element connected to the second subpixel electrode and the first subpixel electrode. The step-up capacitor is formed by overlapping a first conductor connected to the output terminal of the switching element and a second conductor connected to the first subpixel electrode via an insulating layer, and the second conductor has a cutout at an edge opposite the output terminal of the switching element.
    Type: Grant
    Filed: July 8, 2010
    Date of Patent: May 28, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventors: Seon-Ah Cho, Jang-Kun Song, Hyun-Wuk Kim, Eun-Je Jang, You-Sik Shin
  • Patent number: 8445911
    Abstract: An active device array substrate including a substrate, scan lines, data lines, active devices, a first dielectric layer, a common line, a second dielectric layer, a patterned conductive layer, a third dielectric layer, and pixel electrodes is provided. At least a part of the active devices are electrically connected to the scan lines and the data lines. The first dielectric layer covers the scan lines, the data lines and the active devices. The common line is disposed on the first dielectric layer. The second dielectric layer covers the common line and the first dielectric layer. The patterned conductive layer is disposed on the second dielectric layer. The third dielectric layer covers the patterned conductive layer and the second dielectric layer. The pixel electrodes are disposed on the third dielectric layer and electrically connected to the patterned conductive layer and the active devices.
    Type: Grant
    Filed: April 30, 2010
    Date of Patent: May 21, 2013
    Assignee: Au Optronics Corporation
    Inventors: Ching-Jung Yang, Ke-Chih Chang, Kuo-Yu Huang, Yu-Cheng Chen
  • Patent number: 8441586
    Abstract: An LC-based optical device compensates for differences in optical path lengths of polarization components of input beam. As a result, PDL and PMD of the optical device are reduced. The compensation mechanism may be a glass plate that is disposed in an optical path of a polarization component so that the optical path length of that polarization component can be made substantially equal to the optical path length of the other polarization component that traverses through a half-wave plate. Another compensation mechanism is a birefringent displacer that has two sections sandwiching a half-wave plate, wherein the two sections are of different widths and the planar front surface of the birefringent displacer can be positioned to be non-orthogonal with respect to the incident input light beam.
    Type: Grant
    Filed: March 9, 2012
    Date of Patent: May 14, 2013
    Assignee: Oclaro, Inc.
    Inventors: Xuefeng Yue, Ruibo Wang
  • Patent number: 8441589
    Abstract: A pixel structure electrically connected to a data line and a scan line, and including a first and a second active device, a first and a second pixel electrode, and a first and a second capacitance electrode is provided. The first pixel electrode electrically connected to the first active device includes a first and a second electrode block electrically connected to each other. The second pixel electrode electrically connected to the second active device is electrically insulated from the first pixel electrode and separates the first and the second electrode block. The first pixel electrode respectively forms a first and a second capacitor with the first and the second capacitance electrode. The second pixel electrode respectively forms a third and a fourth capacitor with the first and the second capacitance electrode. The first and the second capacitor have different capacitances. The third and the fourth capacitor have different capacitances.
    Type: Grant
    Filed: May 8, 2012
    Date of Patent: May 14, 2013
    Assignee: Au Optronics Corporation
    Inventors: Jenn-Jia Su, Ting-Wei Su, Wen-Hao Hsu
  • Publication number: 20130107152
    Abstract: A liquid crystal display device (1) includes: a plurality of groups of scanning lines (Gia) and (Gib) via which gate signals are outputted to a plurality of pixels (PIX); and scanning line driving circuits (5a) and (5b) which generate the gate signals and which are disposed for each separate one of a plurality of groups of scanning lines (Gia) and (Gib), the liquid crystal display device (1) further including potential control circuits (15a) and (15b), placed in front of the scanning line driving circuits (5a) and (5b), respectively which incline, for each separate one of the groups of scanning lines (Gia) and (Gib), falling edges of high-potential signals (VGH1) and (VGH2) in accordance with which the gate signals are generated and which are composed of pulse waves. This prevents luminance unevenness from occurring in each display region.
    Type: Application
    Filed: April 20, 2011
    Publication date: May 2, 2013
    Applicant: Sharp Kabushiki Kaisha
    Inventor: Hiroshi Okumura
  • Publication number: 20130093971
    Abstract: A liquid crystal device includes a pair of substrates composed of an element substrate and a counter substrate and a liquid crystal layer that is held between the pair of substrates. In the liquid crystal device, a data line and a scanning line are provided on the element substrate in a manner to be orthogonal to each other, a plurality of pixels including a switching element are arranged in matrix, a first electrode and a second electrode are provided on the element substrate, an image signal potential is supplied to the first electrode via the switching element, a common potential is supplied to the second electrode, the second electrode includes a plurality of openings, and a width, in an alignment direction of the plurality of openings, of the opening positioned on an outermost side in the alignment direction is smaller than a width of the rest of the openings.
    Type: Application
    Filed: October 12, 2011
    Publication date: April 18, 2013
    Applicant: SONY CORPORATION
    Inventor: Toshiharu Matsushima
  • Patent number: 8421938
    Abstract: A pixel array is located on a substrate and includes a plurality of pixel sets. Each of the pixel sets includes a first scan line, a second scan line, a data line, a data signal transmission line, a first pixel unit, and a second pixel unit. The data line is not parallel to the first and the second scan lines. The data signal transmission line is disposed parallel to the first and the second scan lines and electrically connected to the data line. Distance between the first and the second scan lines is smaller than distance between the data signal transmission line and one of the first and the second scan lines. The first pixel unit is electrically connected to the first scan line and the data line. The second pixel unit is electrically connected to the second scan line and the data line.
    Type: Grant
    Filed: May 27, 2010
    Date of Patent: April 16, 2013
    Assignee: Au Optronics Corporation
    Inventors: Yi-Hui Li, Yu-Cheng Chen, Tsan-Chun Wang, Chih-Hung Lin, Tung-Huang Chen
  • Publication number: 20130088657
    Abstract: According to one embodiment, a device includes a first substrate including first and second gate lines which extend in a first direction, a source line which extends in a second direction, and a pixel electrode including a primary pixel electrode which is located between the first and second gate lines and which extends in the second direction, a second substrate including a common electrode which extends parallel to the primary pixel electrode on both sides across the primary pixel electrode, and a liquid crystal layer held between the first and second substrates. At a position that intersects with the source line, at least one of the first gate line and the second gate line includes a depression provided in an end located on the side of the pixel electrode.
    Type: Application
    Filed: October 4, 2012
    Publication date: April 11, 2013
    Inventors: Midori TAKANO, Kazuhiro Takahashi, Tatsuya Wakimoto
  • Patent number: 8411217
    Abstract: An active device array substrate including a substrate, a pixel array, pads, first switching devices, and second switching devices is provided. The pixel array is disposed on a display region of the substrate. The pads, the first and the second switching devices are disposed on a peripheral circuit region of the substrate. The pads and the pixel array are electrically connected. The first and the second switching devices are at the outside of the pads. Each first switching device is electrically connected to one of the pads and has a source, a drain, and a gate electrically connected to the source and the pad. Each second switching device is electrically connected to two adjacent first switching devices and has a gate, a source, and a drain. The source and the drain are electrically connected to the drain and the source of the adjacent first switching device, respectively.
    Type: Grant
    Filed: June 24, 2008
    Date of Patent: April 2, 2013
    Assignee: Chunghwa Picture Tubes, Ltd.
    Inventors: Wen-Hsiung Liu, Chien-Kuo He
  • Publication number: 20130077007
    Abstract: Disclosed is an active matrix substrate (1) including thereon: a plurality of signal lines (2); a plurality of scan lines (3) that intersect the signal lines (2); switching elements (4) disposed near intersections of the signal lines (2) and the scan lines (3); a plurality of input terminals (7) for inputting signals to the signal lines (2) and scan lines (3); and short-circuit wiring (8) disposed in an outer area with respect to the input terminals (7), where the short-circuit wiring (8) includes a trunk wiring line (8a) and a plurality of branch wiring lines (8b) that branch off from the trunk wiring line (8a) and that are connected to the respective input terminals (7), and a plurality of separator sections (9) are provided on the short-circuit wiring (8). The separator sections (9) electrically isolate the individual input terminals (7) and the trunk wiring line (8a) from each other.
    Type: Application
    Filed: April 15, 2011
    Publication date: March 28, 2013
    Applicant: SHARP KABUSHIKI KAISHA
    Inventor: Yoshimitsu Tajima
  • Publication number: 20130077006
    Abstract: A liquid crystal display includes a gate line, data lines transmitting a first voltage; a transmitting line transmitting a second voltage; and pixels including first and second pixel electrodes. One pixel electrode receives the first voltage through a data line, and the other receives the second voltage through the transmitting line. Branch electrodes of the pixel electrodes alternate, and a stem of the first pixel electrode of a first pixel, faces a stem of the first pixel electrode of a second pixel and a stem of the second pixel electrode of the second pixel, with respect to the data line. Areas of the stem of the first pixel electrode of the second pixel facing the stem of the first pixel electrode of the first pixel, and of the stem of the second pixel electrode of the second pixel facing the stem of the first pixel, are the same.
    Type: Application
    Filed: March 14, 2012
    Publication date: March 28, 2013
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Kwang-Chul JUNG, Se Hyoung CHO
  • Publication number: 20130070174
    Abstract: To provide a hold-type display device without a problem of motion blur and a driving method thereof. The length of a period for displaying a blanking image in one frame period is controlled in accordance with a control parameter showing the degree of motion blur, and the level of a signal supplied to a display element is changed in accordance with the length of the period for displaying the blanking image. Accordingly, the hold-type display device without a problem of motion blur and the driving method thereof can be provided.
    Type: Application
    Filed: November 15, 2012
    Publication date: March 21, 2013
    Applicant: Semiconductor Energy Laboratory Co., Ltd.
    Inventor: Semiconductor Energy Laboratory Co., Ltd.
  • Patent number: 8390761
    Abstract: A display device includes a first light-emitting element which includes a second layer having the function of flowing carriers and provided between a first anode and a first layer having the function of emitting light of a first color, and a third layer having the function of emitting light of a second color and provided between the first anode and the second layer; and a second light-emitting element which includes a fifth layer having the function of suppressing a flow of carriers and provided between a second anode and a fourth layer having the function of emitting light of the first color, and a first hole injection layer provided between the second anode and the fifth layer.
    Type: Grant
    Filed: July 11, 2011
    Date of Patent: March 5, 2013
    Assignee: Seiko Epson Corporation
    Inventor: Toshihiro Oda
  • Publication number: 20130050602
    Abstract: A liquid crystal cell structure comprising transparent terahertz (THz) windows, alignment layers, protective layers, in-plane electrodes, out-of-plane electrodes, and a liquid crystal (LC) layer. The in-plane electrodes generate in-plane electric fields that are parallel to the liquid crystal layer and the out-of-plane electrodes generate out-of-plane electric fields that are perpendicular to the liquid crystal layer. The in-plane and out-of-plane electrodes have wire-grid patterns to increase THz wave transmission efficiency. The wire-grid patterned electrodes are transparent to THz waves that have parallel polarization compared to a grating vector of the wire grid pattern and are opaque to THz waves of perpendicular polarization. These two electrodes are controlled independently to tune the optical properties of the LC and improve the operating speed of THz LC devices.
    Type: Application
    Filed: August 30, 2012
    Publication date: February 28, 2013
    Inventors: Emma MACPHERSON, Hongkyu PARK, Fan FAN, Vladimir Grigorievich CHIGRINOV, Edward Philip John PARROTT
  • Publication number: 20130050601
    Abstract: According to one embodiment, a liquid crystal display device includes a first substrate including a plurality of first signal lines disposed with a first pitch along a second direction, a plurality of second signal lines disposed with a second pitch along a first direction, and a first electrode including an n-number of first main electrodes (n is an integer of 2 or more), a second substrate including a second electrode including a plurality of second main electrodes disposed with a third pitch along the first direction, wherein an n-number of times the third pitch is substantially equal to the second pitch, and any one of the second main electrodes is located above each of the second signal lines.
    Type: Application
    Filed: July 5, 2012
    Publication date: February 28, 2013
    Inventors: Arihiro Takeda, Hirokazu Morimoto, Jin Hirosawa
  • Patent number: 8384835
    Abstract: A display device includes liquid crystal capacitor element interposed between a pixel electrode and a counter electrode. The pixel electrode, one terminals of a first switch circuit and a second switch circuit, and a first terminal of a second transistor form an internal node. The other terminals of the first switch circuit is connected to the source line. The other terminal of the second switch circuit is connected to the voltage supply line and is configured by a series circuit of transistors. A control terminal of the transistor, a second terminal of the transistor, and one terminal of a boost capacitor element form an output node. The other terminal of the boost capacitor element, the control terminal of the transistor, and the control terminal of the transistor are connected to a boost line, a reference line, and a selecting line, respectively.
    Type: Grant
    Filed: May 24, 2010
    Date of Patent: February 26, 2013
    Assignee: Sharp Kabushiki Kaisha
    Inventor: Yoshimitsu Yamauchi
  • Publication number: 20130038805
    Abstract: A liquid-crystal-driving circuit includes: resistors connected in series between first and second potentials lower than the first potential; one or more voltage follower circuits to impedance-convert one or more intermediate potentials between the first and second potentials, to be outputted, respectively, the intermediate potentials generated at one or more connection points between the resistors, respectively; a common-signal-output circuit to supply common signals to common electrodes of a liquid crystal panel, respectively, the common signals being at the first, second, or one or more intermediate potentials in a predetermined order; and a segment-signal output circuit supplies segment signals to segment electrodes of the liquid crystal panel, respectively, the segment signals being at the first and second potentials, or the intermediate potentials according to the common signals, wherein the segment-signal output circuit increases impedances of the segment signals only for a first period when the of segm
    Type: Application
    Filed: August 13, 2012
    Publication date: February 14, 2013
    Applicant: SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC
    Inventors: Norikazu Katagiri, Tetsuya Tokunaga, Tomoshi Yoshida, Kensuke Goto, Mamoru Yamaguchi
  • Patent number: 8368831
    Abstract: A liquid crystal formulation is described. The liquid crystal formulation comprises a first oligosiloxane-modified nano-phase segregating liquid crystalline material; and at least one additional material selected from a second oligosiloxane-modified nano-phase segregating liquid crystalline material, non-liquid crystalline oligosiloxane-modified materials, organic liquid crystalline materials, or organic non-liquid crystalline materials, wherein the liquid crystal formulation is nano-phase segregated in the SmC* phase, has an I?SmC* phase transition, with a SmC* temperature range from about 15° C. to about 35° C., has a tilt angle of about 22.5°±6° or about 45°±6°, and has a spontaneous polarization of less than about 50 nC/cm2, and a rotational viscosity of less than about 600 cP. Devices containing liquid crystal formulations are also described.
    Type: Grant
    Filed: October 19, 2007
    Date of Patent: February 5, 2013
    Assignees: Dow Corning Corporation, Cambridge Enterprise Ltd.
    Inventors: Jonathan Paul Hannington, Terry Victor Clapp, Fumito Nishida, Russell Keith King, Omar Farooq, Martin Grasmann, William Alden Crossland, Harry James Coles, Anthony Bernard Davey, Huan Xu, Oliver Hadeler, Mykhaylo Pivnenko
  • Publication number: 20130027621
    Abstract: A display apparatus includes a display panel including a plurality of pixels to display an image, a polarizing plate disposed on the display panel, and a retarder disposed opposite to the display panel, where the polarizing plate is interposed between the retarder and the display panel, the retarder includes first areas and second areas alternately arranged therein, and a direction of a slow axis of the retarder in the first areas is different from a direction of a slow axis of the retarder in the second areas.
    Type: Application
    Filed: May 1, 2012
    Publication date: January 31, 2013
    Applicant: SAMSUNG DISPLAY CO., LTD.
    Inventors: Jung-Hun LEE, Duckjong SUH, SEUNGBEOM PARK, DONG HYUN SONG
  • Publication number: 20130021548
    Abstract: A liquid crystal display including a plurality of scan lines, a plurality of data lines and a pixel array is provided. Each data line has a plurality of first vertical portions, a plurality of second vertical portions and a plurality of horizontal portions. The first vertical portions and the second vertical portions are perpendicular to the scan lines. The horizontal portions are parallel to the scan lines. The first vertical portion and the second vertical portion are alternately arranged. Each first vertical portion is connected to its neighboring second vertical portion by a horizontal portion. The pixel array includes a plurality of pixel units. The length of each horizontal portion is equal to the width of at least one pixel unit. The signals with opposite polarities are received by the pixel units on two sides of each horizontal portion.
    Type: Application
    Filed: May 23, 2012
    Publication date: January 24, 2013
    Applicants: CHIMEI INNOLUX CORPORATION, INNOCOM TECHNOLOGY(SHENZHEN)CO., LTD.
    Inventors: Li-Wei Sung, Ya-Yu Li
  • Publication number: 20130021549
    Abstract: A fluorescent substrate (5) of the present invention includes: a fluorescent layer (3) which emits light by receiving excitation light; and a reflecting film (10) being provided both (i) on a side surface(s) of the fluorescent layer (3) and (ii) on a surface of the fluorescent layer (3), on which surface the excitation light is incident, the reflecting film (10) (I) transmitting a component having a peak wavelength of the excitation light, and (II) reflecting a component having a peak wavelength of the light emitted from the fluorescent layer (3).
    Type: Application
    Filed: January 28, 2011
    Publication date: January 24, 2013
    Inventor: Yoshimasa Fujita
  • Publication number: 20130016295
    Abstract: A novel approach for generating FLC electro-optics with gray-scale resolution includes using FLC material that is: (i.) capable of electrostatic V-shape switching, (ii.) capable of optical latching, and (iii.) not requiring DC balance.
    Type: Application
    Filed: July 13, 2012
    Publication date: January 17, 2013
    Inventor: David M. Walba
  • Patent number: 8345176
    Abstract: A LCD device that includes a gate driver transferring a plurality of gate signals to a plurality of gate lines, a gate driver transferring a plurality of gate signals to a plurality of data lines, and a pixel unit including a plurality of pixels arranged in a matrix form. The pixel unit includes a plurality of pixel pairs in each of which two corresponding pixels included in two neighboring pixel columns, respectively, and in the same pixel row, from among the plurality of pixels, are connected in common to a corresponding data line of the plurality of data lines and a corresponding gate line of the plurality of gate lines, and wherein a gate signal transferred to a predetermined pixel row through a corresponding gate line is transferred to a pixel on one side and a pixel on the other side from among a plurality of pixel pairs included in two pixel rows different from the predetermined pixel row, thereby controlling a switching operation.
    Type: Grant
    Filed: October 21, 2010
    Date of Patent: January 1, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventor: Byoung-Ick Ko
  • Patent number: 8339531
    Abstract: A display device in which a pixel voltage is held at low power consumption without any influence from fluctuation in threshold voltage is provided. A liquid crystal capacitor element (Clc) is formed between a pixel electrode (20) and a counter electrode (80). A counter voltage (Vcom) is applied to the counter electrode (80). The pixel electrode (20), one ends of a first switch circuit (22) and a second switch circuit (23), and a first terminal of a second transistor (T2) form an internal node (N1). The other end of the first switch circuit (22) is connected to a source line (SL). The second switch circuit (23) has the other end connected to a voltage supply line (VSL) and is a series circuit of transistors (T1 and T2). A control terminal of the transistor (T1), a second terminal of the transistor (T2), and one end of the boost capacitor element (Cbst) form an output node (N2).
    Type: Grant
    Filed: July 22, 2010
    Date of Patent: December 25, 2012
    Assignee: Sharp Kabushiki Kaisha
    Inventor: Yoshimitsu Yamauchi
  • Patent number: 8339530
    Abstract: The present invention provides a display device which can display characters clearly and display images smoothly. An area gray scale method is adopted and a configuration of one pixel is changed depending on a mode, by selecting one or more display regions in each pixel. When characters are needed to be displayed clearly, one pixel is configured by selecting a stripe arrangement. Thus, clear display can be conducted. When images are needed to be displayed, one pixel is configured by selecting an indented state. Thus, smooth display can be conducted.
    Type: Grant
    Filed: April 6, 2012
    Date of Patent: December 25, 2012
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Hajime Kimura, Shunpei Yamazaki
  • Publication number: 20120320294
    Abstract: A liquid crystal display (LCD) including a liquid crystal panel, and a gate driver which applies a gate signal having a driving frequency equal to or greater than 100 Hz to the liquid crystal panel. The liquid crystal panel comprises a first display panel, a second display panel facing the first display panel, and a liquid crystal composition disposed between the first display panel and the second display panel and includes liquid crystals.
    Type: Application
    Filed: August 30, 2012
    Publication date: December 20, 2012
    Applicant: SAMSUNG DISPLAY CO., LTD.
    Inventors: Dong-Gyu KIM, Kyoung-Ju SHIN, Jong-Ho SON, Jun-Pyo LEE, Seung-Soo BAEK
  • Patent number: 8330885
    Abstract: A display circuit adapted for a display device and the display device are provided. The display device comprises a gate drive device, a data drive device and the display circuit. The display circuit comprises at least one display unit which has four pixels. Each of the pixels has two sub-pixels, each of which has a transistor coupled to a pixel electrode. The transistors of the two sub-pixels of each of pixels are cascaded to electrically connect to the data drive device. The transistors of the two sub-pixels of each of pixels are electrically connected to the gate drive device, respectively, to receive signals, provided from the gate drive device, as switching signals for determining whether a data voltage provided by the data drive device is received or not.
    Type: Grant
    Filed: December 6, 2010
    Date of Patent: December 11, 2012
    Assignee: AU Optronics Corp.
    Inventors: Chao Liang Lu, Jing-Tin Kuo, Keng-Ming Chen, Yu-Cheng Tsai, Chi-Mao Hung
  • Publication number: 20120293736
    Abstract: A display apparatus includes a plurality of pixels. At least one of the pixels includes a gate line, a data line, a first storage line spaced apart from the gate line, a second storage line spaced apart from the gate line and the first storage line, first and second switching devices electrically connected to the gate line and the data line, a first liquid crystal capacitor connected to the first switching device and including the liquid crystal layer as its dielectric substance, a second liquid crystal capacitor connected to the second switching device and including the liquid crystal layer as its dielectric substance, a first storage capacitor connected between the first switching device and one of the first and second storage lines, and a second storage capacitor connected between the second switching device and a remaining one of the first and second storage lines.
    Type: Application
    Filed: November 28, 2011
    Publication date: November 22, 2012
    Inventors: KWANG-CHUL JUNG, Chongchul Chai, Kyoungju Shin, Joon-Chul Goh, Young-Soo Yoon
  • Patent number: 8310611
    Abstract: Provided is a display device including: a gate electrode (GT); a semiconductor film (S) which controls a current flowing between a source electrode (ST) and a drain electrode (DT), the semiconductor film including a channel region and two impurity regions formed of regions which sandwich the channel region; two Ohmic contact layers (DS) being interposed between the source electrode and the like and the two impurity regions; and an insulating film laminated on a partial region of the semiconductor film, the partial region being around a position corresponding to a substantial center of the semiconductor film, in which: the semiconductor film is formed of one of microcrystalline-silicon and polycrystalline-silicon; the two impurity regions are formed in regions on which the insulating film is absent; the two Ohmic contact layers cover the two impurity regions therewith; and the source electrode and the like cover the Ohmic contact layers therewith.
    Type: Grant
    Filed: August 5, 2009
    Date of Patent: November 13, 2012
    Assignees: Hitachi Displays, Ltd., Panasonic Liquid Crystal Display Co., Ltd.
    Inventors: Takuo Kaitoh, Toshio Miyazawa, Takeshi Sakai
  • Patent number: 8305531
    Abstract: A black matrix is disposed on a surface of a first base substrate having a switching element, a color filter is disposed on the switching element in a pixel area, a pixel electrode is disposed on the first base substrate having the color filter, and a first alignment layer is disposed on the pixel electrode to form a first substrate. A common electrode layer is disposed on a second base substrate, and a second alignment layer is disposed on the common electrode layer to form a second substrate. A liquid crystal composition including a reactive mesogen (RM) is interposed between opposing surfaces of the first and second substrates. The RM is cured to form a mesogen cured product on the first and second alignment layers. Accordingly, an RM having a planar structure increases curing speed, reduces, manufacturing time, and improves quality of the LCD panel.
    Type: Grant
    Filed: April 22, 2010
    Date of Patent: November 6, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Dong-Gi Seong, Jae-Jin Lyu, Seung-Beom Park, Keun-Chan Oh
  • Publication number: 20120236222
    Abstract: A liquid crystal display includes: a first gate line; a first data line crossing the first gate line; a first switching element connected with the first gate line and the first data line; a second switching element connected with the first gate line and the first data line; a first liquid crystal capacitor connected with the first switching element; a second liquid crystal capacitor connected with the second switching element; a boost switching element which is turned on during a time period not overlapping a time period during which the first switching element is turned on; and a boost capacitor including a first terminal connected with the boost switching element and a second terminal connected with the first liquid crystal capacitor.
    Type: Application
    Filed: July 22, 2011
    Publication date: September 20, 2012
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jong-In KIM, Min-Wook PARK, Eun-Guk LEE, Young-Goo SONG, Kyoung-Tai HAN, Hyuk-Jin KIM, Hak-Bum CHOI, Hyo-Seop KIM
  • Publication number: 20120229722
    Abstract: A display comprising a flexible layered structure and a circuit layer. The layered structure comprises an active layer, comprising LC material and electroluminescent/phosphor material, switchable to define information to be displayed sandwiched between front and rear electrodes which are arranged to have an alternating voltage applied thereto to generate an electric field across the active layer. The display further comprises a substrate being the transparent front layer, a reflective insulating layer, an insulating layer mounted behind the rear electrode and a conductive plane mounted behind the insulating layer and connected to ground, to a DC voltage and/or to a same potential as the circuit layer. The circuit layer may comprise at least one switch to be activated by deflection of the layered structure.
    Type: Application
    Filed: September 9, 2011
    Publication date: September 13, 2012
    Applicant: MFLEX UK LIMITED
    Inventor: Christopher James Newton Fryer
  • Patent number: 8264430
    Abstract: A display device includes a load, a transistor for controlling a current value supplied to the load, a capacitor, a first wiring, a second wiring, and first to fourth switches. Variations in the current value caused by variations in the threshold voltage of the transistor can be suppressed through the steps of: (1) holding the threshold voltage of the transistor in the storage capacitor, (2) inputting a potential in accordance with a video signal, and (3) holding a voltage that is the sum of the threshold voltage and the potential in accordance with the video signal, in the storage capacitor. Accordingly, a desired current can be supplied to the load such as a light emitting element.
    Type: Grant
    Filed: February 26, 2010
    Date of Patent: September 11, 2012
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventor: Hajime Kimura
  • Patent number: 8259245
    Abstract: Disclosed are a liquid crystal display and a photomask for manufacturing the liquid crystal display. The liquid crystal display includes a substrate, a pixel electrode disposed on the substrate and including first and second sub-pixel electrodes, a first thin film transistor having first gate and source electrodes and a first drain electrode connected to the first sub-pixel electrode, a second thin film transistor having second gate and source electrodes and a second drain electrode connected to the second sub-pixel electrode, and a third thin film transistor having third gate and drain electrodes and a third source electrode connected to the second sub-pixel electrode. A first gate signal is applied to the first and second gate electrodes, a second gate signal is applied to the third gate electrode, the same data signal is applied to the first and second source electrodes, and the second drain electrode and the third source electrode are connected to each other.
    Type: Grant
    Filed: May 26, 2009
    Date of Patent: September 4, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Yoon-Jang Kim, Young-Goo Song, Sung-Jae Moon
  • Publication number: 20120218486
    Abstract: A display substrate includes a first switching element, a second switching element, a first pixel electrode, a second pixel electrode, a main storage electrode and a sub-storage electrode. The first switching element is connected to a data line and a first gate line. The second switching element is connected to the data line and a second gate line adjacent to the first gate line. The first pixel electrode is electrically connected to the first switching element. The second pixel electrode is electrically connected to the second switching element. The main storage electrode is disposed in an area between the first pixel electrode and the second electrode to overlap with first ends of the first and second pixel electrodes. The sub-storage electrode is spaced apart from the first and second gate lines.
    Type: Application
    Filed: May 10, 2012
    Publication date: August 30, 2012
    Inventors: Hong-Woo Lee, Jong-Oh Kim, Sung-Man Kim, Sun-Kyu Joo, Bong-Jun Lee, Jae-Min Shin
  • Patent number: 8253911
    Abstract: To improve viewing angle characteristics by varying voltage which is applied between liquid crystal elements. A liquid crystal display device in which one pixel is provided with three or more liquid crystal elements and the level of voltage which is applied is varied between the liquid crystal elements is varied. In order to vary the level of the voltage which is applied between the liquid crystal elements, an element which divides the applied voltage is provided. In order to vary the level of the applied voltage, a capacitor, a resistor, a transistor, or the like is used. Viewing angle characteristics can be improved by varying the level of the voltage which is applied between the liquid crystal elements.
    Type: Grant
    Filed: May 5, 2008
    Date of Patent: August 28, 2012
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventor: Hajime Kimura
  • Patent number: 8237881
    Abstract: An array substrate comprises data lines, gate lines, thin film transistors and pixel electrodes formed on a base substrate. Pixel units are defined by intersecting the data lines and the gate lines, the thin film transistors are formed at the intersections of the data lines and the gate lines, and the data lines extend across each of the pixel units in the middle of the pixel units. At least two thin film transistors for controlling a same pixel electrode are respectively formed on both sides of the data line in each pixel unit.
    Type: Grant
    Filed: August 5, 2009
    Date of Patent: August 7, 2012
    Assignee: Beijing Boe Optoelectronics Technology Co., Ltd.
    Inventors: Meihua Hong, Ziqi Xia, Zhinan Zhang
  • Patent number: 8237646
    Abstract: In a display apparatus having a plurality of pixel parts, each pixel part receives a data signal in response to a present gate signal and charges first and second pixel voltages having the same voltage level. A plurality of voltage controllers includes a level-down part to lower a voltage level of the second pixel voltage using a previous pixel voltage charged in a previous frame in response to a next gate signal and a level-up part to receive the lowered second pixel voltage in response to the next gate signal to boost up a voltage level of the first pixel voltage.
    Type: Grant
    Filed: June 3, 2008
    Date of Patent: August 7, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Hee-Wook Do, Seung-Beom Park, Hoon Kim, Hye-Ran You, Jian Gang Lu, Hee-Seop Kim, Young-Chol Yang, Seung-Hoon Lee
  • Patent number: 8228273
    Abstract: One embodiment of the present invention is to prevent deterioration of display quality from occurring in a display device provided with an active matrix substrate even when a larger size or a higher resolution is employed and a drive frequency is increased. In an active matrix substrate of a liquid crystal display device, a discharge control signal line is disposed so as to be arranged along each gate line and discharge TFTs are provided for each source line in numbers equal to the number of the gate lines. The gate terminal, source terminal, and drain terminal of the discharge TFT are connected to the discharge control signal line, the storage capacitance line, and its adjacent source line, respectively. Each storage capacitance line is provided with the common potential Vcom. Each discharge control signal line is provided with a signal which turns on the discharge TFT for a predetermined period of every one horizontal period.
    Type: Grant
    Filed: March 27, 2007
    Date of Patent: July 24, 2012
    Assignee: Sharp Kabushiki Kaisha
    Inventor: Toshihide Tsubata
  • Patent number: 8223285
    Abstract: An active matrix device includes: a substrate; a pixel electrode formed at a side adjacent to one of surfaces of the substrate; a switching element, including: a fixed electrode formed so as to correspond to the pixel electrode and coupled with the pixel electrode; a movable electrode formed so as to be displaced toward the fixed electrode along a surface direction of the substrate to be in one of states being in contact with the fixed electrode and apart from the fixed electrode; a driving electrode formed so as to form an electrostatic gap between the movable electrode and the driving electrode, the fixed electrode, the movable electrode, and the driving electrode being disposed in different positions from each other along the surface direction of the substrate; a first wiring line coupled with the movable electrode; and a second wiring line coupled with the driving electrode.
    Type: Grant
    Filed: November 7, 2008
    Date of Patent: July 17, 2012
    Assignee: Seiko Epson Corporation
    Inventor: Isamu Namose
  • Patent number: 8218099
    Abstract: An object is to provide an active matrix liquid crystal display device in which plural kinds of circuits are formed over one substrate and plural kinds of thin film transistors are provided corresponding to characteristics of the plural kinds of circuits. An inverted-coplanar thin film transistor including an oxide semiconductor layer which is over and overlaps with a source electrode layer and a drain electrode layer is used for a pixel thin film transistor. A channel-protective thin film transistor is used for a driver-circuit thin film transistor is used. In addition, main parts of the pixel thin film transistor are formed using a light-transmitting material, so that the aperture ratio is increased.
    Type: Grant
    Filed: August 30, 2010
    Date of Patent: July 10, 2012
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Shunpei Yamazaki, Masayuki Sakakura, Junichiro Sakata, Masashi Tsubuku, Kengo Akimoto, Miyuki Hosoba, Yoshiaki Oikawa
  • Patent number: 8217926
    Abstract: An exemplary liquid crystal display includes a liquid crystal panel, a gate driving circuit, a data driving circuit, and a compensation circuit. The liquid crystal panel includes gate lines and data lines intersecting the gate lines. The compensation circuit includes capacitors corresponding to the gate lines. The gate driving circuit is configured for providing scanning signals to the gate lines in sequence. The data driving circuit is configured for providing gray scale voltages to the data lines. The compensation circuit is configured for compensating the scanning signals.
    Type: Grant
    Filed: October 14, 2008
    Date of Patent: July 10, 2012
    Assignees: Innocom Technology (Shenzhen) Co., Ltd., Chimei Innolux Corporation
    Inventor: Kai Meng