Split Pixels Patents (Class 349/144)
  • Patent number: 8085353
    Abstract: A thin film transistor (TFT) array panel for a Liquid Crystal Display apparatus (LCD) is provided. The TFT array panel comprises a plurality of gate lines, at least one data line intersecting the plurality of gate lines and at least one thin film transistor connected to at least one of the gate lines and the at least one data line. The at least one film transistor comprises a drain electrode. In addition, the TFT array panel further comprises at least one pixel electrode including at least one first subpixel electrode connected to the drain electrode of the thin film transistor and a second subpixel electrode capacitively coupled to the at least one first subpixel electrode. Moreover, the pixel electrode has a partitioning member for partitioning the pixel electrode into at least two partitions having portions which do not overlap the drain electrode. The at least two partitions are disposed symmetrically to a reference line equidistant from the plurality of gate lines.
    Type: Grant
    Filed: October 31, 2005
    Date of Patent: December 27, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Kyoung-Ju Shin, Cheol-Woo Park, Jae-Jin Lyu, Chong-Chul Chai
  • Patent number: 8085377
    Abstract: A liquid crystal display (LCD) panel and an LCD device using the same are provided. The LCD panel includes a first and a second substrate, wherein a liquid crystal layer is sealed between the first and the second substrates. The first substrate has a plurality of pixel unit each including a data line, a scan line, a switch element, a first pixel electrode, a second pixel electrode, a first aligning electrode and a second aligning electrode. The scan line corresponds to a gap between the first pixel electrode and the second pixel electrode. The switch element has an input terminal, a control terminal, a first output terminal and a second output terminal. The first aligning electrode and the second aligning electrode correspond to the edges of the first pixel electrode and the second pixel electrode respectively, and receive a voltage of a common electrode.
    Type: Grant
    Filed: June 18, 2009
    Date of Patent: December 27, 2011
    Assignee: Wintek Corporation
    Inventors: Wen-Chun Wang, Kuo-Chang Su
  • Patent number: 8081283
    Abstract: A liquid crystal display panel includes a first substrate, a second substrate, a pixel disposed on the second substrate, a bottom capacitor electrode, a top capacitor electrode, a liquid crystal layer disposed between the first substrate and the second substrate, and a plurality of protrusions disposed on the first substrate. The pixel includes a first pixel electrode and a second pixel electrode, in which a main slit is formed between the first pixel electrode and the second pixel electrode. The bottom capacitor electrode is disposed on the second substrate and overlaps a portion of the main slit, and the top capacitor electrode is disposed on the second substrate and forms a capacitor with the bottom capacitor electrode.
    Type: Grant
    Filed: July 2, 2010
    Date of Patent: December 20, 2011
    Assignee: AU Optronics Corp.
    Inventor: Mu-Jen Su
  • Patent number: 8081282
    Abstract: A liquid crystal display device includes a first substrate having a gate line and two data lines crossing with the gate line to define a pixel, a first pixel electrode connected to the gate line and the first data line, and a second pixel electrode connected to the gate line and the second data line. A second substrate opposes the first substrate and includes a common electrode having a common electrode cutting pattern. The pixel electrode includes a pixel electrode cutting pattern to form domains and sub domains in the pixel with the common electrode cutting pattern. A liquid crystal layer is arranged between the first and second substrates. The pixel electrodes include bent portions. The pixel electrode and the common electrode include sub cutting patterns extending towards the sub domains at the bent portions.
    Type: Grant
    Filed: December 4, 2007
    Date of Patent: December 20, 2011
    Assignees: Samsung Electronics Co., Ltd., Industrial Cooperation Foundation of Chonbuk National University
    Inventors: Seung-hee Lee, Ji-won Sohn, Yeon-mun Jeon, Seong-jin Hwang, Jae-jin Lyu
  • Patent number: 8077280
    Abstract: A thin film transistor substrate of horizontal electric field type liquid crystal display device includes: a gate line and a common line arranged in parallel on a substrate and formed from a first conductive layer; a data line formed from a second conductive layer, the data line crossing the gate line and the common line having a gate insulating film therebetween such that the data line, the gate line and the common line define a pixel area; a thin film transistor having a gate connected to the gate line and a source electrode connected to the data line; a common electrode extending from the common line into the pixel area and formed from the first conductive layer; a protective film for covering a plurality of signal lines and electrodes and the thin film transistor; a pixel hole in the protective film having an elongated shape that parallels the common electrode; and a pixel electrode connected to a side surface of a drain electrode of the thin film transistor and formed from a third conductive layer within
    Type: Grant
    Filed: November 2, 2004
    Date of Patent: December 13, 2011
    Assignee: LG Display Co., Ltd.
    Inventors: Youn Gyoung Chang, Heung Lyul Cho
  • Patent number: 8077284
    Abstract: The present invention is a substrate for a display device comprising an active matrix substrate and an opposed substrate which are opposed to each other with a display medium layer interposed therebetween, said active matrix substrate including a pixel electrode arranged in a matrix shape on the side of the display medium layer and said opposed substrate including a common electrode opposing to the pixel electrode on the side of the display medium layer, wherein said substrate for a display device includes an electrode slit formed in one of the pixel electrode and the common electrode; and at least one of the electrical connecting portions of said electrode slit is provided outside of a light-blocking region.
    Type: Grant
    Filed: September 12, 2008
    Date of Patent: December 13, 2011
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Hidetoshi Nakagawa, Toshihide Tsubata, Nobuyoshi Nagashima, Yuhko Hisada
  • Patent number: 8077285
    Abstract: A liquid crystal display includes an upper substrate, a lower substrate and a liquid crystal layer interposed between the upper substrate and the lower substrate. The lower substrate includes a pixel array divided into a plurality of columns of pixel areas and a plurality of rows of pixel areas. Each pixel area includes a upper sub-pixel electrode, a lower sub-pixel electrode insulated to the upper sub-pixel electrode and a TFT switch electrically connected to the lower sub-pixel electrode. The upper sub-pixel electrode is electrically connected to a lower sub-pixel electrode of a previous column, and the lower sub-pixel electrode is electrically connected to a upper sub-pixel electrode of a next column.
    Type: Grant
    Filed: February 25, 2011
    Date of Patent: December 13, 2011
    Assignee: AU Optronics Corporation
    Inventor: Meng-Yi Hung
  • Publication number: 20110299024
    Abstract: Disclosed is an LCD device which facilitates to improve transmittance for each colored light by a design capable of realizing an optimal cell gap for each of sub-pixels, and a method for manufacturing the same. The LCD device comprises first and second substrates confronting each other; a liquid crystal layer between the first and second substrates; and first, second, and third sub-pixels, wherein a cell gap of the first sub-pixel is larger than a cell gap of the third sub-pixel.
    Type: Application
    Filed: June 2, 2011
    Publication date: December 8, 2011
    Inventors: Jung Il Lee, In Jae Chung, Kang Il Kim
  • Patent number: 8072569
    Abstract: A Fringe Field Switching (“FFS”) mode liquid crystal display panel 10A includes an array substrate having first electrodes 14 each provided in a space delimited by a plurality of scan lines 12 and signal lines 17, second electrodes 21 provided on the first electrodes 14 with an insulator therebetween, and a plurality of slits 20A provided to each of the second electrodes 21 in parallel with one another in a direction crossing the signal lines 17; and a color filter substrate having a color filter layer. Each of the slits 20A has an open end 20A? on one side. The color filter layer has a centerline 30 extending along the signal lines 17 for individual pixels, and the centerline 30 coincides with a display centerline 32 that is shifted toward the open end side of the slits from a centerline 31 of each second electrode as viewed from above.
    Type: Grant
    Filed: September 13, 2007
    Date of Patent: December 6, 2011
    Assignee: Sony Corporation
    Inventors: Hideki Kaneko, Masahiro Horiguchi
  • Patent number: 8068130
    Abstract: An active matrix type display panel, used as a display-use panel, has pixel patterns each having aperture sections. The aperture sections are set to have a width satisfying the following inequality, 0<(minimum width of the aperture sections in the pixel)/(maximum width of the aperture sections in the pixel)?0.037, or 0.130?(minimum width of the aperture sections in the pixel)/(maximum width of the aperture sections in the pixel)<1.
    Type: Grant
    Filed: November 4, 2004
    Date of Patent: November 29, 2011
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Sunao Aoki, Tatsuji Saitoh, Kenji Fujita, Toshihiro Matsumoto
  • Patent number: 8068203
    Abstract: A liquid crystal display device includes two substrates, liquid crystal therebetween, and sub-pixel regions. Each sub-pixel region is divided into first to fourth display regions by a first axis extending orthogonal to an optical axis of a polarizing plate and a second axis extending orthogonal to the first axis. Each first to fourth display region includes slit electrodes on the second electrodes along the first axis. First slit electrodes in the first display region and second slit electrodes in the second display region are symmetric relative to the first axis. Third slit electrodes in the third display region and fourth slit electrodes in the fourth display region are symmetric relative to the first axis. The first and fourth slit electrodes are symmetric relative to the second axis. The second and third slit electrodes are symmetric relative to the second axis.
    Type: Grant
    Filed: January 30, 2009
    Date of Patent: November 29, 2011
    Assignee: Sony Corporation
    Inventors: Shinichiro Nomura, Hideki Kaneko, Masahiro Horiguchi
  • Patent number: 8064026
    Abstract: A liquid crystal display device having a liquid crystal display panel includes a first substrate, a second substrate, and liquid crystal interposed between the first and second substrates. The first substrate includes an active element, a first insulating film formed on the active element, a plurality of first electrodes disposed on the first insulating film, a second insulating film disposed on the first electrodes, and a pixel electrode disposed on the second insulating film. The pixel electrode is electrically coupled to the active element via a portion defining a contact hole formed in a portion defining a clearance between the plurality of first electrodes.
    Type: Grant
    Filed: June 17, 2010
    Date of Patent: November 22, 2011
    Assignee: Hitachi Displays, Ltd.
    Inventors: Takahiro Ochiai, Takayuki Nakao, Toshio Miyazawa, Masahiro Maki, Tohru Sasaki
  • Patent number: 8059247
    Abstract: A liquid crystal display device has pixels, and each pixel has a lower substrate and an upper substrate with a liquid crystal material in between. The each pixel also has an electrode structure between the lower substrate and the upper substrate. The electrode structure has electrodes, and each electrode has a polygon-shaped electrode surface and a plurality of electrode edges. The electrodes are arranged such that if an electrode edge is facing an electrode edge of an adjacent electrode then the electrode edge and the electrode edge of the adjacent electrode define a distance which is substantially constant along the entire electrode edge.
    Type: Grant
    Filed: December 31, 2008
    Date of Patent: November 15, 2011
    Assignee: Chimei Innolux Corporation
    Inventors: Jan Frank Strömer, Nathalie Magali Danielle Dessaud
  • Patent number: 8053775
    Abstract: The liquid crystal display device of this invention includes a plurality of picture element regions each defined by a first electrode provided on a face of a first substrate facing a liquid crystal layer and a second electrode provided on a second substrate so as to oppose the first electrode via the liquid crystal layer sandwiched therebetween. In each of the picture element regions, the first electrode has a plurality of openings and a solid portion, the liquid crystal layer is in a vertical orientation state when no voltage is applied between the first electrode and the second electrode, and when a voltage is applied between the first electrode and the second electrode, a plurality of liquid crystal domains each in a radially-inclined orientation state are respectively formed in the plurality of openings and the solid portion by inclined electrode fields generated at respective edge portions of the openings of the first electrode.
    Type: Grant
    Filed: January 19, 2010
    Date of Patent: November 8, 2011
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Masumi Kubo, Akihiro Yamamoto, Takashi Ochi, Tetsuhiro Yamaguchi, Naoshi Yamada, Katsuhiko Morishita, Kiyoshi Ogishima, Kazuhiro Maekawa
  • Patent number: 8054398
    Abstract: The present invention provides a liquid crystal display having excellent visibility. A thin film transistor array panel is provided, which includes: gate lines formed on an insulating substrate; data lines insulated from the gate lines and intersecting the gate lines; first pixel electrodes disposed on pixel areas defined by intersections of the gate lines and the data lines; first thin film transistors, each having three terminals connected to one of the gate lines, one of the data lines, and one of the first pixel electrodes; second pixel electrodes disposed on the pixel areas and capacitively coupled to the first pixel electrodes; and second thin film transistors, each having three terminals connected to a previous gate line, a storage electrode line or one of the data lines, and one of the second pixel electrodes.
    Type: Grant
    Filed: March 26, 2004
    Date of Patent: November 8, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Hee-Seob Kim, Jong-Lae Kim, Young-Chol Yang, Sung-Kyu Hong
  • Publication number: 20110261309
    Abstract: A liquid crystal display panel including an active device array substrate, an opposite substrate, a plurality of spacers and a liquid crystal layer is provided. The active device array substrate includes a plurality of position limiting structures, each including a first and a second position limiting pattern. The opposite substrate is disposed above the active device array substrate. The spacers are disposed on the opposite substrate, and the spacers are protruded towards the active device array substrate and extended adjacent to the first and second position limiting patterns. Displacement of each spacer is limited by the first or second position limiting pattern. The first position limiting patterns limit the displacement of a portion of the spacers along a first azimuth range, the second position limiting patterns limit the displacement of a portion of the spacers along a second azimuth range, and the first and second azimuth ranges are different.
    Type: Application
    Filed: July 7, 2010
    Publication date: October 27, 2011
    Applicant: AU OPTRONICS CORPORATION
    Inventors: Wei-Kai Huang, Jen-Chieh Hsieh, Lung-Ling Tang
  • Patent number: 8044438
    Abstract: Disclosed are a liquid crystal display and a substrate for the same. The substrate comprises first wires formed in one direction on the substrate; second wires intersecting and insulated from the first wires; pixel electrodes formed in pixel regions defined by the first wires and the second wires; and switching elements connected to the first wires, the second wires and the pixel electrodes, wherein an interval between two adjacent second wires has a predetermined dimension that repeatedly varies from one set of adjacent second wires to the next, and a side of the pixel electrodes adjacent to the second wires is shaped in a pattern identical to the second wires such that the pixel electrodes have a wide portion and a narrow portion.
    Type: Grant
    Filed: May 25, 2010
    Date of Patent: October 25, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Jang-Kun Song
  • Patent number: 8044907
    Abstract: A liquid crystal display including two substrates, gate bus lines, liquid crystal molecules, and a polymer that determines directions in which the liquid crystal molecules tilt. A plurality of divisional areas are arranged on one of the substrates. The pixels are aligned in a column between drain bus lines. A pixel electrode is formed at each of the divisional areas. A first thin film transistor drives a first divisional area, and a second thin film transistor drives a second divisional area of the same column. The first and second thin film transistors are electrically connected to the same gate bus line. Either the pixel electrodes formed at each of the divisional areas are electrically insulated from each other, or they are connected to each other through a high resistance. A first threshold voltage within the first divisional area is different from a second threshold voltage of the second divisional area.
    Type: Grant
    Filed: December 6, 2010
    Date of Patent: October 25, 2011
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Takashi Sasabayashi, Arihiro Takeda, Hiroyasu Inoue, Kazuya Ueda, Yoshio Koike, Hideaki Tsuda, Yasutoshi Tasaka, Hidefumi Yoshida, Kunihiro Tashiro, Tsuyoshi Kamada, Kimiaki Nakamura
  • Patent number: 8045118
    Abstract: In a liquid crystal display, an image-defining data voltage is simultaneously applied to a main pixel electrode (MPE) and an electrically isolatable sub pixel electrode (SPE) to thereby respectively define a main pixel voltage and a sub pixel voltage. The MPE defines one plate of a first capacitor whose other plate receives a first common voltage whose voltage level can be varied after the image-defining data voltage is applied. Thus the main pixel voltage is shifted up or shifted down according to the voltage variation of the first common voltage. The SPE defines one plate of a second capacitor whose other plate receives a second common voltage. By causing the main pixel voltage to be of greater absolute amplitude than the sub pixel voltage, a side visibility of the liquid crystal display can be enhanced.
    Type: Grant
    Filed: August 19, 2008
    Date of Patent: October 25, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Hoon Kim, Jae-Jin Lyi, Hye-Ran You
  • Patent number: 8040479
    Abstract: A gate line extending in a transverse direction and a data line intersecting the gate line are formed on the substrate. The data line includes a curved portion and an intermediate portion crossing the gate line substantially at a right angle. A pixel electrode is formed on an insulating layer. The pixel electrode is connected to a thin film transistor and it has an edge extending substantially parallel to the curved portion of the data line.
    Type: Grant
    Filed: August 4, 2009
    Date of Patent: October 18, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Jang-Kun Song
  • Patent number: 8040481
    Abstract: An in-plane switching mode liquid crystal display device includes a first substrate; a gate line disposed in a first direction on the first substrate; a data line disposed in a second direction on the first substrate, the data line crossing the gate line to define a pixel region; pixel electrodes and common electrodes disposed in the first direction in the pixel region, the pixel electrodes and the common electrodes generating an in-plane electric field within the pixel region; first and second common lines disposed parallel to the data line at right and left sides of the pixel region; a first common electrode connection line connecting at least two common electrodes and forming a first common electrode overlapping region by overlapping the first common line; and a second common electrode connection line connecting at least two other common electrodes and forming a second common electrode overlapping region by overlapping the second common line, wherein the first common electrode overlapping region and the se
    Type: Grant
    Filed: April 12, 2010
    Date of Patent: October 18, 2011
    Assignee: LG Display Co., Ltd.
    Inventors: Do-Sung Kim, Woon-Sub Choi
  • Patent number: 8035787
    Abstract: The present invention relates to a liquid crystal display including a pixel electrode including a first subpixel electrode and a second subpixel electrode spaced apart with a gap therebetween, a common electrode facing the pixel electrode, and a liquid crystal layer formed between the pixel electrode and the common electrode and including a plurality of liquid crystal molecules. The first and second subpixel electrodes include a plurality of branches, and each of the first and second subpixel electrodes includes a plurality of subregions. The branches extend in different directions in different subregions.
    Type: Grant
    Filed: December 4, 2008
    Date of Patent: October 11, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Mee-Hye Jung, Ji-Won Sohn, Jae-Jin Lyu, Chong-Chul Chai
  • Patent number: 8035764
    Abstract: There is provided an MVA type liquid crystal display device having high brightness and excellent display quality.
    Type: Grant
    Filed: February 10, 2011
    Date of Patent: October 11, 2011
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Katsunori Misaki, Tetsuya Fujikawa, Yoshihisa Taguchi, Kenichi Nagaoka, Manabu Sawasaki
  • Patent number: 8035788
    Abstract: A liquid crystal display device includes: first and second substrates facing and spaced apart from each other, each of the first and second substrates having an image-displaying sub pixel and a viewing angle-adjusting sub pixel; a thin film transistor corresponding to each of the image-displaying sub pixel and the viewing angle-adjusting sub pixel; a liquid crystal display layer between the first and second substrates, the liquid crystal layer having a negative dielectric constant anisotropy; a first field distortion means in the image-displaying sub pixel; and a second field distortion means in the viewing angle-adjusting sub pixel.
    Type: Grant
    Filed: June 17, 2008
    Date of Patent: October 11, 2011
    Assignee: LG Display Co., Ltd.
    Inventors: Tae-Han Kim, In-Hyuk Song, Kyung-Eon Lee
  • Patent number: 8035767
    Abstract: A liquid crystal display includes a plurality of pixels arranged in a matrix, the pixels including a plurality of pixel electrodes each including a first subpixel electrode and a second subpixel electrode; a plurality of first thin film transistors electrically connected to the first subpixel electrodes; a plurality of second thin film transistors electrically connected to the second subpixel electrodes; a plurality of third thin film transistors electrically connected to the second subpixel electrodes; a plurality of first gate lines electrically connected to the first and second thin film transistors; a plurality of data lines electrically connected to the first and second thin film transistors; a plurality of the second gate lines electrically connected to the third thin film transistors; and a plurality of capacitance electrode lines overlapping the first and second gate lines and disposed in a same layer as a layer of the pixel electrodes, wherein drain electrodes of the third thin film transistors overl
    Type: Grant
    Filed: July 10, 2009
    Date of Patent: October 11, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Dong-Gyu Kim, Gwang-Bum Ko
  • Publication number: 20110242443
    Abstract: A liquid crystal display panel, including: a first substrate including a common electrode; a second substrate including a plurality of pixels which are arranged in a matrix form and face the common electrode, wherein at least one of the pixels includes first and second subpixels; the first subpixel including a first subpixel electrode, wherein the first subpixel electrode includes a plurality of first micro branches, which are arranged at a first angle with respect to a polarization axis of a polarizer disposed adjacent to the first or second substrate; the second subpixel including a second subpixel electrode, wherein the second subpixel electrode includes a plurality of second micro branches, which are arranged at a second angle with respect to the polarization axis of the polarizer, wherein the first angle is different from the second angle by about 20° or less; and a liquid crystal layer interposed between the first and second substrates.
    Type: Application
    Filed: February 1, 2011
    Publication date: October 6, 2011
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Kyong-Sik Choi, Myung-Jae Park, Min-Wook Park, Sung-Hoon Kim, Gak-Seok Lee, Woo-Jung Shin, Jun-Hyup Lee, Keun-Chan Oh, Sang-Gyun Kim, Su-Jeong Kim, Seung-Beom Park, Youn-Hak Jeong
  • Patent number: 8031287
    Abstract: The present invention relates to a display panel and a liquid crystal display including the same. The display panel includes a pixel electrode, which includes a first subpixel electrode, a second subpixel electrode, and a third subpixel electrode insulated from each other, a first thin film transistor connected to the first subpixel electrode, a second thin film transistor connected to the second subpixel electrode, a third thin film transistor connected to the third subpixel electrode, a gate line connected to the first, second, and third thin film transistors, a data line connected to the first, second, and third thin film transistors, and a voltage differentiating member to change voltages of the first, second, and third subpixel electrodes, the voltages of the first, second, and third subpixel electrodes being different from each other.
    Type: Grant
    Filed: September 29, 2008
    Date of Patent: October 4, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Yoon-Sung Um, Hoon Kim, Hye-Ran Yoo, Jae-Jin Lyu, Seung-Beom Park
  • Patent number: 8031313
    Abstract: A lateral electric field type LCD device displays images uniformly and stably, where abnormally displayed areas caused by mechanical deformation such as a press with a finger do not remain on the display screen for a long time. A first liquid crystal driving electrode and a second liquid crystal driving electrode comprise a first bend and a second bend, respectively. Each pixel region is divided into a first sub-region and a second sub-region by the first and second bends as a boundary in such a way that a rotation direction of liquid crystal molecules in the first sub-region is different from that in the second sub-region. A boundary stabilization electrode is formed at least one of the first and second bends, wherein a shape or position of the boundary stabilization electrode deviates from a line of symmetry of the first and second bends.
    Type: Grant
    Filed: May 12, 2009
    Date of Patent: October 4, 2011
    Assignee: NEC LCD Technologies, Ltd.
    Inventor: Teruaki Suzuki
  • Patent number: 8031286
    Abstract: A liquid crystal display includes a first insulating substrate, and a second insulating substrate facing the first insulating substrate. Gate lines are formed on the first insulating substrate while extending in a horizontal direction. A gate insulating layer is formed on the gate lines. A semiconductor layer and data lines are formed on the gate insulating layer. The data lines extend in a vertical direction. Source electrodes are formed on the semiconductor layer while being connected to the data lines. Drain electrodes face the source electrodes. A protective layer is formed on the data lines, and pixel electrodes are formed on the protective layer such that the pixel electrodes are connected to the drain electrodes while having a plurality of slits and horizontal opening portions. A common electrode is formed on the second insulating substrate with a plurality of opening portions.
    Type: Grant
    Filed: August 2, 2007
    Date of Patent: October 4, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Jang-Kun Song
  • Patent number: 8026988
    Abstract: A multi-domain vertical alignment liquid crystal display that does not require physical features on the substrate (such as protrusions and ITO slits) is disclosed. Each pixel of the MVA LCD is subdivided into color components, which are further divided into color dots. The drive component areas, i.e. where switching elements and storage capacitors are located, are converted to associated dots by adding an electrode that can be electrically biased. The voltage polarity of the color dots and associated dots are arranged so that fringe fields in each color dot causes multiple liquid crystal domains in each color dot. Specifically, the color dots and associated dots of a pixel are arranged so that associated dots have opposite polarity as compared to neighboring color dots.
    Type: Grant
    Filed: May 30, 2008
    Date of Patent: September 27, 2011
    Assignee: Hiap L. Ong and Kyoritsu Optronics, Co., Ltd.
    Inventor: Hiap L. Ong
  • Patent number: 8026989
    Abstract: A liquid crystal display (LCD) panel employed in an LCD device includes an array substrate and an opposite substrate. The array substrate includes a pixel electrode formed in a pixel area including a first sub-pixel area and a second sub-pixel area. The opposite substrate is spaced apart from the array substrate to receive a liquid crystal layer. The opposite substrate includes a first common electrode formed in correspondence with the pixel area, and a second common electrode being floated in correspondence with the second sub-pixel area to form a coupling capacitor.
    Type: Grant
    Filed: February 26, 2009
    Date of Patent: September 27, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Kyoung-Ju Shin, Hyeong-Cheol Ahn, Jin-Oh Park
  • Patent number: 8026991
    Abstract: In a thin film transistor, first and second thin film transistors are connected to an Nth gate line and an Mth data line, and first and second sub pixel electrodes are connected to the first and second thin film transistors, respectively. A third thin film transistor includes a gate electrode connected to an (N+1)th gate line, a semiconductor layer overlapping with the gate electrode, a source electrode connected to the second sub pixel electrode and partially overlapping with the gate electrode, and a drain electrode facing the source electrode. A first auxiliary electrode is connected to the drain electrode and arranged on the same layer as the first and second sub pixel electrodes. An opposite electrode is arranged on the same layer as the gate line and at least partially overlaps with the first auxiliary electrode with at least one insulating layer disposed therebetween.
    Type: Grant
    Filed: October 22, 2008
    Date of Patent: September 27, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Yoon-Sung Um, Hoon Kim, Hye-Ran You, Jae-Jin Lyu, Seung-Beom Park
  • Patent number: 8018566
    Abstract: An in-plane switching (IPS) mode liquid crystal display (LCD) and its fabrication method are disclosed. Common lines are formed at upper and lower portions of a pixel region to reduce a line width of the common lines and to reduce resistance of the common lines. A gate line is formed at the center of the pixel region to divide the pixel region into two regions in which pixel electrode connection lines and common electrode connection lines are arranged to crisscross each other to thus improve a luminance characteristic due to a parasitic capacitance deflection.
    Type: Grant
    Filed: November 19, 2010
    Date of Patent: September 13, 2011
    Assignee: LG Display Co., Ltd.
    Inventor: Sang-Pil Yoon
  • Patent number: 8018537
    Abstract: A multi-domain vertical alignment liquid crystal display that does not require physical features on the substrate (such as protrusions and ITO slits) is disclosed. Each pixel of the MVA LCD is subdivided into color components, which are further divided into color dots. The color components include polarized extension regions that extend between color dots of neighboring color components (and neighboring pixels). The voltage polarity of the color dots and polarized extension regions are arranged so that fringe fields in each color dot causes multiple liquid crystal domains in each color dot. Specifically, the color dots and polarity extension regions of the display are arranged so that neighboring polarized elements have opposite polarities.
    Type: Grant
    Filed: January 23, 2008
    Date of Patent: September 13, 2011
    Assignees: Kyoritsu Optronics Co., Ltd.
    Inventor: Hiap L. Ong
  • Patent number: 8013968
    Abstract: An array substrate for an in-plane switching mode liquid crystal display device particularly includes a first pattern in the pixel region on the passivation layer, the first pattern connected to the drain electrode through the first contact hole and overlapping the first extending portion, a plurality of first electrodes extending from the first pattern, the plurality of first electrodes parallel to the first and second data lines, a second pattern in the pixel region on the passivation layer and parallel to gate line, the second pattern electrically connected to the second data line, and a plurality of second electrodes extending from the second pattern and alternating with the plurality of first electrodes by a first distance between adjacent first and second electrodes, wherein one of the plurality of first electrodes is spaced apart from the second data line by a distance equal to the first distance or more than the first distance and less than double the first distance, and another of the plurality of fi
    Type: Grant
    Filed: December 24, 2008
    Date of Patent: September 6, 2011
    Assignee: LG Display Co., Ltd.
    Inventors: Young-Min Jeong, Su-Woong Lee
  • Patent number: 8013961
    Abstract: An object of the present invention is to implement a bright liquid crystal display device having a high contrast ratio and a wide viewing angle. A liquid crystal display device according to the present invention has: a number of data lines; gate lines formed so as to cross the number of data lines; a number of switching elements formed in locations where the number of data lines and the number of gate lines cross; a reflection area and a transmission area formed within each pixel; a liquid crystal layer sandwiched between first and second substrates; a common electrode placed between the first substrate and the liquid crystal layer; and a pixel electrode placed between the second substrate and the liquid crystal layer, and the common electrode has slits or protrusions, and the data lines overlap the slits in the common electrode or protrusions of the common electrode in the direction of normal to a surface of the first substrate in the configuration.
    Type: Grant
    Filed: February 19, 2009
    Date of Patent: September 6, 2011
    Assignee: Hitachi Displays, Ltd.
    Inventors: Masaya Adachi, Miharu Otani, Jun Tanaka
  • Patent number: 8009257
    Abstract: A liquid crystal display includes first and second substrates. The first substrate has a first insulating substrate, and a pixel electrode formed on the first insulating substrate with a first opening pattern. The second substrate has a second insulating substrate, and a common electrode formed on the second insulating substrate with a second opening pattern. The first and the second opening patterns proceed parallel to each other while being arranged in an alternate manner. A liquid crystal material is injected between the first and the second substrates. A spacer is positioned at an end of the second opening pattern to maintain the distance between the first and the second substrates.
    Type: Grant
    Filed: October 26, 2010
    Date of Patent: August 30, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Joong-Hyun Mun, Jang-Kun Song, Yong-Woo Choi, Bo-Sung Kim, Kwan-Wook Jung, Jung-Ho Lee, Hyo-Rak Nam
  • Patent number: 8004626
    Abstract: A pixel array including first scan lines, second scan lines, data lines, and sub-pixels is provided. Each sub-pixel includes a first switch, a second switch, a first pixel electrode electrically connected to the first switch, a second pixel electrode electrically connected to the second switch, a third switch, and common lines connected with each other and disposed under the first and the second pixel electrode. The first and the second switch are electrically connected to the same first scan line and data line. The first scan line is located between the first and second pixel electrode. The third switch is electrically connected to the second scan line and the first pixel electrode and has a floating terminal. The floating terminal is capacitively coupled to the second pixel electrode to form a first capacitor and capacitively coupled to the common line under the second pixel electrode to form a second capacitor.
    Type: Grant
    Filed: July 16, 2009
    Date of Patent: August 23, 2011
    Assignee: Au Optronics Corporation
    Inventors: Tien-Lun Ting, Chieh-Wei Chen, Chih-Haw Wang, Chung-Yi Chiu, Wen-Hao Hsu, Jenn-Jia Su
  • Patent number: 7999900
    Abstract: A multi-domain vertical alignment liquid crystal display that does not require physical features on the substrate (such as protrusions and ITO slits) is disclosed. Each pixel of the MVA LCD is subdivided into color components, which are further divided into color dots. The polarities of the color dots are arranged so that fringe fields in each color dots causes multiple liquid crystal domains in each color dot. Specifically, the color dots of a pixel are arranged so that each color dot of a first polarity has four neighboring pixels of a second polarity. Thus, a checkerboard pattern of polarities is formed. Furthermore, the checkerboard pattern is extended across multiple pixels in the MVA LCD. In addition, many display unit include multiple pixel designs to improve color distribution or electrical distribution. Furthermore, many display units interleave the pixels.
    Type: Grant
    Filed: May 21, 2007
    Date of Patent: August 16, 2011
    Assignee: Hiap L. Ong and Kyoritsu Optronics Co., Ltd
    Inventor: Hiap L. Ong
  • Patent number: 7999777
    Abstract: A liquid crystal display device includes a liquid crystal display panel having a first substrate, a second substrate, and a positive liquid crystal sandwiched between the first and second substrates. The liquid crystal display panel includes a plurality of sub pixels which include a first electrode and a second electrode formed on the first substrate. The liquid crystal display panel is configured to drive the liquid crystal by generating an electric field using a difference in potential between the first electrode and the second electrode. The first substrate includes a first alignment film, a plurality of video lines, and a first polarizer, and the second substrate includes a second alignment film, and a second polarizer. Relationships exist among extension directions of the video lines and directions of alignment axis orthogonal thereto, of the alignment films a polarization axis of at least one of the polarizer, and angles therebetween.
    Type: Grant
    Filed: October 31, 2008
    Date of Patent: August 16, 2011
    Assignee: Hitachi Displays, Ltd.
    Inventors: Masateru Morimoto, Yasuyuki Yamada
  • Patent number: 7995155
    Abstract: A liquid crystal display includes first and second gate lines arranged in parallel to each other and sequentially transmitting a gate voltage, a data line crossing the first and second gate lines and transmitting a data voltage, a pixel electrode constituted by first and second sub-pixel electrodes and electrically disconnected from each other, a first switching element connected to the first gate line, the data line, and the first sub-pixel electrode, a second switching element connected to the first gate line, the data line, and the second sub-pixel electrode, a third switching element connected to the first sub-pixel electrode across a charge-sharing capacitor, and a fourth switching element connected to the second gate line and the second sub-pixel electrode and connected to the first sub-pixel electrode across the charge-sharing capacitor.
    Type: Grant
    Filed: November 21, 2008
    Date of Patent: August 9, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Young-Chol Yang, JianGang Lu, Seung-Hoon Lee
  • Patent number: 7995017
    Abstract: A thin film transistor array panel is provided, which includes: a substrate; a first signal line formed on the substrate; a second signal line formed on the substrate and having an intersecting portion intersecting the first signal line and a curved portion connected to the intersecting portion; a first thin film transistor connected to the first and the second signal lines; and a pixel electrode that are connected to the first thin film transistor, includes first and second partitions, and are curved along the curved portion of the second signal line.
    Type: Grant
    Filed: April 11, 2007
    Date of Patent: August 9, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Dong-Gyu Kim
  • Publication number: 20110187979
    Abstract: A liquid crystal display includes: a first substrate; a gate line disposed on the first substrate; a data line intersecting the gate line; a thin film transistor connected to the gate line and the data line; a coupling electrode connected to the thin film transistor; a first sub-pixel electrode connected to the thin film transistor; a second sub-pixel electrode capacitively coupled to the coupling electrode; a second substrate facing the first substrate; a common electrode disposed on the second substrate; and a polarizer disposed on the first substrate or the second substrate and having a polarization axis. The coupling electrode is elongated substantially parallel to the polarization axis and has a first edge substantially parallel to or substantially perpendicular to the polarization axis.
    Type: Application
    Filed: April 8, 2011
    Publication date: August 4, 2011
    Inventor: SEUNG-SOO BAEK
  • Patent number: 7990503
    Abstract: A liquid crystal display device includes a pair of substrates; a liquid crystal sealed between the substrates; plural pixel regions each having a first pixel electrode formed on one of the pair of substrates and a second pixel electrode separated from the first pixel electrode; a TFT having a source electrode which is electrically connected to the first pixel electrode; a control capacitance portion which has a control capacitance electrode electrically connected to the source electrode and opposed to at least part of the second pixel electrode via an insulating film, and which thereby establishes capacitive coupling between the source electrode and the second pixel electrode; linear projections formed on the other substrate; and apertures formed in the first and second pixel electrodes so as to occupy parts of overlap regions of the linear projections and the first and second pixel electrodes as viewed perpendicularly to the substrate surfaces, for controlling the positions of singular points of alignment ve
    Type: Grant
    Filed: January 18, 2006
    Date of Patent: August 2, 2011
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Yasutoshi Tasaka, Masakazu Shibasaki, Yohei Nakanishi, Hidefumi Yoshida, Tsuyoshi Kamada, Kazuya Ueda, Hideaki Tsuda
  • Patent number: 7990504
    Abstract: A liquid crystal display includes first and second thin film transistors, a pixel electrode including a first cutout and an inclination direction determining member and connected to the first thin film transistor, a direction controlling electrode connected to the second thin film transistor, a first storage electrode overlapping with the pixel electrode and the direction controlling electrode and applied with a first storage electrode signal having a first voltage, and second storage electrode overlapping with the direction controlling electrode to receive a second storage electrode signal having a second voltage that periodically changes.
    Type: Grant
    Filed: April 2, 2008
    Date of Patent: August 2, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jun-Woo Lee, Hee-Seop Kim, Mee-Hye Jung, Seung-Hoon Lee, Jiangang Lu
  • Publication number: 20110176094
    Abstract: A transflective liquid crystal display device including a liquid crystal display panel which includes a pair of substrates; liquid crystal which is sandwiched between the pair of substrates; a plurality of sub pixels each of which includes a transmissive portion and a reflective portion, each sub pixel having a pixel electrode formed on one substrate out of the pair of substrates and a counter electrode formed on the one substrate, the pixel electrode being arranged in common in the transmissive portion and the reflective portion and the counter electrode being arranged individually in the transmissive portion and the reflective portion in one sub pixel, the pixel electrode and the counter electrode generating an electric field therebetween thus driving the liquid crystal. The liquid crystal display panel includes color filters having different lengths or different shape portions, for example.
    Type: Application
    Filed: April 4, 2011
    Publication date: July 21, 2011
    Inventors: Masateru Morimoto, Takahiro Ochiai
  • Patent number: 7982702
    Abstract: A liquid crystal display device, in which the liquid crystal molecules are aligned vertically when no voltage is applied, includes pixels each having plural sub-pixel electrodes, a data bus drive circuit for applying drive signals to the sub-pixel electrodes via a data bus line and a switching element, and alignment regulation structure for regulating the direction of alignment of liquid crystal molecules. The first and second sub-pixel electrodes have different areas. The data bus drive circuit applies a first drive signal, which causes luminance to change from minimum to maximum for an increase of input grayscale of image signal, to the first sub-pixel electrode, and a second drive signal, which causes the luminance to be lower than the first drive signal, to the second sub-pixel electrode.
    Type: Grant
    Filed: March 1, 2005
    Date of Patent: July 19, 2011
    Assignees: Fujitsu Limited, AU Optronics Corporation
    Inventors: Tsuyoshi Kamada, Arihiro Takeda
  • Publication number: 20110170045
    Abstract: A liquid crystal display (LCD) capable of easily implementing a repairing process is provided under a circumstance where a width of a sustain electrode line is reduced or even no sustain electrode line is provided for the purpose of ensuring an increased aperture ratio, and a method for repairing the liquid crystal display is provided. The LCD includes a gate line, extending in a first direction, and a data wiring being insulated from the gate line. The data wiring includes a source electrode, a drain electrode, and a data line extending in a second direction. A pixel electrode is connected to the drain electrode via a contact hole, and a sustain electrode line is formed in a substantially the same plane as the gate line and has a sustain electrode overlapped by the contact hole.
    Type: Application
    Filed: July 8, 2010
    Publication date: July 14, 2011
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Sang-Kueon Lee, Yun-Seok Lee, Kweon-Sam Hong, Byeong-Hee Won
  • Patent number: 7978296
    Abstract: The invention is directed to an improved flat panel liquid crystal display (LCD). In one embodiment the improved LCD includes a liquid crystal layer that completely fills a gap formed between a color filter array and a thin film transistor (TFT) array. The TFT array includes a substrate that includes one or more pixel areas. Each pixel area may be divided into at least two pixel sub-areas. Each pixel sub-area is configured to have a different electric field than its counterparts, such that mutual compensation in the sub-areas decreases distortion of a gamma curve and improves lateral visibility of the flat panel display. In one embodiment, a first pixel electrode is formed in a first of the at least two pixel sub-areas; and a second pixel electrode is formed in a second of the at least two pixel sub-areas.
    Type: Grant
    Filed: October 2, 2009
    Date of Patent: July 12, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Hee-Seop Kim, Jae-Jin Lyu, Doo-Hwan You
  • Patent number: 7978271
    Abstract: A multi-domain liquid crystal display includes a first and a second transparent substrates, a liquid crystal layer interposed between them, a common electrode, a first and a second metal layers, a first and a second dielectric layer, multiple pixel electrodes and multiple auxiliary electrodes. The second metal layer is formed on the first dielectric layer, and the second dielectric layer is formed on the first dielectric layer and covers the second metal layer. The pixel electrodes are formed on the second dielectric layer, each of the pixel electrodes having at least one opening to divide itself into a plurality of sections. The auxiliary electrodes are formed on the second dielectric layer, and each of the auxiliary electrodes extends into the opening of the pixel electrode. The second metal layer is hollowed out at a position overlapping the auxiliary electrode to form at least one opening.
    Type: Grant
    Filed: June 5, 2008
    Date of Patent: July 12, 2011
    Assignee: Wintek Corporation
    Inventors: Wen-Chun Wang, Chin-Chang Liu