Plural Nonredundant Transistors Per Pixel Patents (Class 349/48)
  • Patent number: 8363176
    Abstract: With a display device using a pixel which includes a sub-pixel, the display device with improved viewing angle and quality of moving image display is provided without increase in power consumption by driving of the sub-pixel. A circuit which can change conducting states by a plurality of switches is provided, and charge in a plurality of sub-pixels and a capacitor element is transported mutually, so that desired voltage is applied to the plurality of sub-pixels without applying voltage in plural times from external. Moreover, a period in which each sub-pixel displays black is provided in accordance with transfer of charge.
    Type: Grant
    Filed: November 1, 2011
    Date of Patent: January 29, 2013
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventor: Yasunori Yoshida
  • Patent number: 8355090
    Abstract: A liquid crystal display (LCD), according to an exemplary embodiment of the present invention, includes a first pixel formed between the first and second gate lines, the first and the second data lines, a first subpixel configured to have applied thereto a first data voltage and a second subpixel configured to have applied thereto a second data voltage lower than the first data voltage, a second pixel formed between the second and third gate lines, the first and second data lines, and having a third subpixel configured to have applied thereto a third data voltage and a fourth subpixel configured to have applied thereto a fourth data voltage lower than the third data voltage.
    Type: Grant
    Filed: July 22, 2009
    Date of Patent: January 15, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventors: Ji-Hyun Kwon, Hye-Seok Na, Won-Hee Lee, Ho-Kyoon Kwon, Byoung-Sun Na, Dong-Yoon Lee, Ju-Hee Lee, Gwang-Bum Ko
  • Patent number: 8339529
    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: September 12, 2011
    Date of Patent: December 25, 2012
    Assignee: Hiap L. Ong and Kyoritsu Optronics Co., Ltd.
    Inventor: Hiap L. Ong
  • Patent number: 8339534
    Abstract: A display device includes gate lines; data lines; charge control lines each including a charge control voltage input pad; first and second thin film transistors (TFTs) each including control and input electrodes connected to the gate and data lines, respectively; a first liquid crystal capacitor connected to an output electrode of the first TFT; a second liquid crystal capacitor connected to an output electrode of the second TFT; a charge control TFT including a control electrode and an input electrode connected to one of the charge control lines and the second pixel electrode, respectively; and a charge-down capacitor connected to an output electrode of the charge control TFT. A duration time of a turn-on voltage pulse applied to the charge control TFT is different from a duration time of a turn-on voltage pulse applied to the first TFT transistor or the second TFT.
    Type: Grant
    Filed: July 28, 2009
    Date of Patent: December 25, 2012
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jun-Pyo Lee, Sun-Kyu Son, Ok-Kwon Shin, Jung-Won Kim, Hee-Jin Choi, Sang-Soo Kim, Hyong-Rae Lee, Duk-Hwan Kang, Kwan-Woo Lee
  • Patent number: 8334940
    Abstract: A display panel including a first substrate, scan lines, data lines, sub-pixel units, a light-shielding layer, a second substrate, and a display medium is provided. Each of the sub-pixel units includes a main display unit and a sub-display unit. The main display unit includes a first switch and a first pixel electrode, wherein the first pixel electrode and the data lines adjacent thereto are separated from each other with a gap (G1). The sub-display unit includes a second switch and a second pixel electrode, wherein the second and the data lines adjacent thereto are overlapped with a first overlapping width (W1). The light-shielding layer is disposed between two adjacent first pixel electrodes such that the light-shielding layer and one of the first pixel electrodes adjacent thereto are overlapped with a second overlapping width (W2). Additionally, the display medium is display between the first substrate and the second substrate.
    Type: Grant
    Filed: January 26, 2010
    Date of Patent: December 18, 2012
    Assignee: Au Optronics Corporation
    Inventors: Wen-Hsien Tseng, Yen-Heng Huang, Chia-Hui Pai, Chung-Kai Chen, Wei-Yuan Cheng, Chin-An Tseng, Chia-Yu Lee, Ting-Yi Cho
  • Patent number: 8330890
    Abstract: A plurality of display elements each includes two signal lines: S1 and S2. An electrode 4, which is one of the electrodes constituting an element capacitor Cp, is connected to the signal line S1 via a switching element TFT1, while the other electrode 5 is connected to the signal line S2 via a switching element S2. The gate electrodes of the switching elements TFT1 and TFT2 are connected to a single common scanning line G. With this structure the drive voltage applied to the element capacitor can be increased even when a TFT has a limited withstand pressure.
    Type: Grant
    Filed: June 15, 2010
    Date of Patent: December 11, 2012
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Koichi Miyachi, Kiyoshi Ogishima, Akihito Jinda
  • Patent number: 8330884
    Abstract: A pixel array substrate includes a pixel region and a circuit region adjacent to the pixel region. A plurality of display pixel units are disposed in the pixel region and a plurality of dummy pixel units are disposed in the circuit region. Each of the dummy pixel units includes a data line, a scan line, a plurality of switching elements and a plurality of pixel electrodes. The switching elements are electrically connected to the scan line and data line. The pixel electrodes are electrically connected to the switching elements. Particularly, electrostatic currents in the pixel region can be dissipated by the dummy pixel units in the circuit region. The dummy pixel units preserve the continuity of electricity in the pixel array substrate and function as an inner short ring. Therefore, the area of the circuit region on the pixel array substrate is larger.
    Type: Grant
    Filed: January 12, 2009
    Date of Patent: December 11, 2012
    Assignee: Chunghwa Picture Tubes, Ltd.
    Inventors: Liang-hao Kang, Yang-Hui Chang
  • Patent number: 8325287
    Abstract: A liquid crystal display includes a gate line, a data line crossing the gate line and insulated from the gate line, a common voltage line separated from the gate line and the data line, where the common voltage line transfers a predetermined voltage, a first switching element connected to the gate line and the data line, a second switching element connected to the gate line and the data line, a first liquid crystal capacitor connected to the first switching element, a second liquid crystal capacitor connected to the second switching element and at least two decompressing switching elements connected to the second switching element and the common voltage line.
    Type: Grant
    Filed: January 7, 2011
    Date of Patent: December 4, 2012
    Assignee: Samsung Display Co., Ltd.
    Inventors: Kwang-Chul Jung, Chong-Chul Chai, Joon-Chul Goh, Young-Soo Yoon
  • Patent number: 8325286
    Abstract: It is possible to decrease block segmentation and flickering due to separate exposure in an active matrix substrate while avoiding decreased aperture ratio, increased parasitic capacity and complication in manufacturing process. A first pixel circuit and a second pixel circuit including a first-type TFT and a second-type TFT, respectively, are disposed alternately relative to each other in both directions of row and column in an active matrix substrate. In the first-type and the second-type TFTs, a pattern misalignment of the drain electrode with respect to the gate electrode in an up-down direction will increase/decrease a gate-drain parasitic capacity Cgd in reverse ways. By disposing these two types of TFTs in uniform dispersion, the increase/decrease in the parasitic capacity Cgd caused by pattern misalignment occurring at the time of manufacture are averaged.
    Type: Grant
    Filed: September 17, 2009
    Date of Patent: December 4, 2012
    Assignee: Sharp Kabushiki Kaisha
    Inventor: Yuhko Hisada
  • Patent number: 8319906
    Abstract: A scanning signal line (16) includes an opening (29) leading from the outside of a pixel region through below a data signal line (15) into the pixel region, and first and second scanning electrode portions (16a/16b) or two side portions of the opening confronting in a column direction through that opening. The end portion of the first scanning electrode portion (16a) in the pixel region is a first end portion (EP1), and the end portion of the second scanning electrode portion (16b) in the pixel region is a second end portion (EP2). A first transistor has a source electrode (9a) and a drain electrode (8a) individually overlapping the first electrode portion (16a) but not the first end portion (EP1) in the pixel region. A second transistor has a source electrode (9b) and a drain electrode (8b) individually overlapping the second electrode portion (16b) but not the second end portion EP2) in the pixel region.
    Type: Grant
    Filed: October 29, 2007
    Date of Patent: November 27, 2012
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Kenji Enda, Ikumi Itsumi, Toshihide Tsubata, Masanori Takeuchi
  • Patent number: 8314913
    Abstract: A liquid crystal display according to an exemplary embodiment of the present invention includes: a first insulation substrate; a pixel electrode formed on the first insulation substrate, and including a first subpixel electrode and a second subpixel electrode separated from each other; a second insulation substrate facing the first insulation substrate; a common electrode formed on the second insulation substrate and 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, wherein the first and second subpixel electrodes respectively include a plurality of minute branches, and the minute branches of the first subpixel electrode and the minute branches of the second subpixel electrode are alternately disposed in a unit of at least one minute branch.
    Type: Grant
    Filed: September 22, 2009
    Date of Patent: November 20, 2012
    Assignee: Samsung Display Co., Ltd.
    Inventors: Yoon-Sung Um, Su-Jeong Kim, Hye-Ran You, Jae-Jin Lyu
  • Patent number: 8310648
    Abstract: The disclosure describes a liquid crystal display device with a sensing function and a method of fabricating the same. The device comprising gate and data lines crossing each other on a substrate, so as to define a pixel region including a pixel electrode; a first switching thin film transistor disposed at a crossing of the gate and data lines; a sensing thin film transistor, disposed at a predetermined portion of the pixel region, that senses external light; a sensing storage capacitor that stores a signal sensed by the sensing thin film transistor; and a second switching thin film transistor that receives the sensing signal stored and reads information that is externally inputted, wherein the sensing storage capacitor and the second switching thin film transistor are provided with a reflective region including a reflective electrode.
    Type: Grant
    Filed: January 5, 2012
    Date of Patent: November 13, 2012
    Assignee: LG Display Co., Ltd.
    Inventors: Su Hwan Moon, Tae Hwan Kim
  • Patent number: 8310605
    Abstract: A liquid crystal display apparatus comprises a first substrate, a second substrate, a liquid crystal layer and a plurality of pixels. The second substrate is arranged opposite to the first substrate with a gap. The liquid crystal layer is held between the first substrate and the second substrate. The pixels are provided between the first substrate and the second substrate. Each pixel has a first pixel part including a switching element and a pixel electrode electrically connected to the switching element, and a second pixel part including a switching element and a pixel electrode electrically connected to the switching element. The first liquid crystal molecules lying on the first pixel part of each pixel are oriented independently of second liquid crystal molecules lying on the second pixel part of the pixel.
    Type: Grant
    Filed: February 13, 2008
    Date of Patent: November 13, 2012
    Assignee: Japan Display Central Inc.
    Inventor: Yuzo Hisatake
  • Patent number: 8305539
    Abstract: A pixel structure of liquid crystal display including a first and a second sub-pixel electrodes, a first and a second data lines, a gate line, and a first and a second transistors is provided. The first and the second sub-pixel electrodes disposed in the first and second sub-pixel areas respectively include at least two display domains at left and right. The first data line is disposed under the interface between two domains of each of the first and second sub-pixel electrodes, and the second data line is disposed under the edges of the first and second sub-pixel electrodes. The gate line is disposed between the first and second sub-pixel areas. The first sub-pixel electrode is controlled by the gate line and the first data line through the first transistor. The second sub-pixel electrode is controlled by the gate line and the second data line through the second transistor.
    Type: Grant
    Filed: June 17, 2008
    Date of Patent: November 6, 2012
    Assignee: AU Optronics Corp.
    Inventors: Ting-Wei Su, Pei-Chun Liao, Hung-Lung Hou
  • Patent number: 8305528
    Abstract: A liquid crystal display (LCD) comprises an array substrate and a color filter substrate, which are assembled together and sandwich liquid crystal therebetween. The array substrate comprises a gate line, a first data line and a second data line, which define a pixel region, a first pixel electrode and a first thin film transistor (TFT) for controlling the first data line to provide a first data voltage to the first pixel electrode in the pixel region, and a second pixel electrode and a second TFT for controlling the second data line to provide a second data voltage to the second pixel electrode. The color filter substrate comprises black matrixes and a color resin unit.
    Type: Grant
    Filed: September 21, 2010
    Date of Patent: November 6, 2012
    Assignee: Beijing Boe Optoelectronics Technology Co., Ltd.
    Inventor: Zheng Wang
  • Patent number: 8304039
    Abstract: A liquid crystal display is provided that includes a first substrate; a second substrate facing the first substrate; a field generating electrode disposed on at least one of the first substrate and the second substrate; an alignment layer disposed on the field generating electrode; and a liquid crystal layer interposed between the first substrate and the second substrate and including a liquid crystal and an alignment polymer. The alignment layer initially contains an alignment material including an initiator, and the alignment polymer initially contains an alignment aid.
    Type: Grant
    Filed: October 12, 2010
    Date of Patent: November 6, 2012
    Assignee: Samsung Display Co., Ltd.
    Inventors: Ho-Kil Oh, Su-Jeong Kim, Su-Han Woo, Jae-Jin Lyu, Min-Hee Kim
  • Patent number: 8294841
    Abstract: A pixel array includes many scan lines, data lines and pixel structures coupled to the scan lines and data lines. Each of the pixel structures includes a first pixel unit and a second pixel unit. Each of the first pixel units includes a first switch device. Each of the second pixel units includes a second switch device and a coupling capacitor. In each of the pixel structures in an ith row, a control end and a first end of the first switch device are respectively coupled to the ith scan line and one of the data lines; a control end and a first end of the second switch device are respectively coupled to the (i?1)th scan line and a second end of the first switch device. The coupling capacitor is coupled between the second end of the first switch device and a second end of the second switch device.
    Type: Grant
    Filed: November 5, 2009
    Date of Patent: October 23, 2012
    Assignee: Chunghwa Picture Tubes, Ltd.
    Inventors: Shiuan-Yi Ho, Meng-Feng Hung, Chien-Kuo He
  • Patent number: 8294866
    Abstract: Disclosed are a liquid crystal display device and a method of manufacturing the liquid crystal display device. The liquid crystal display device includes a first insulating substrate, a gate line and a data line formed on the first insulating substrate and crossing each other, a first pixel electrode formed on the first insulating substrate and including a first part and a second part which are physically separated, a second pixel electrode formed on the first insulating substrate and forming an electric field with the first pixel electrode, a connection bridge including at least one conductive layer and electrically connecting the first part with the second part through a contact hole, and at least one insulating layer positioned between the first pixel electrode and the connection bridge, wherein the contact hole is formed in the at least one insulating layer.
    Type: Grant
    Filed: September 17, 2010
    Date of Patent: October 23, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Dong-Hyeon Ki, Mee-Hye Jung, Se-Hyoung Cho, Dong-Gyu Kim, Seung-Soo Baek, Hye-Seok Na
  • Patent number: 8284339
    Abstract: A column for defining the interval between a TFT substrate and an opposed substrate is formed at a crossing point between a drain line and a scanning line. At the crossing point where the column is formed, the drain line is formed to have a wider width to prevent light leakage. Further, at the crossing point where the column is formed, the scanning line is formed to have a narrower width to prevent increase of capacitance between the drain line and the scanning line. The column is formed at a crossing point corresponding to a specific color, e.g., a blue pixel B, so that a difference in transmittance and in characteristic of thin film transistors due to formation of the column is initially compensated.
    Type: Grant
    Filed: February 19, 2009
    Date of Patent: October 9, 2012
    Assignees: Hitachi Displays, Ltd., Panasonic Liquid Crystal Display Co., Ltd.
    Inventors: Takahiro Ochiai, Tohru Sasaki, Tetsuya Nagata
  • Patent number: 8279366
    Abstract: A multi-domain vertical alignment liquid crystal display and a lower substrate thereof are disclosed. The voltage provided by coupling electrode lines is swung between a high voltage level and a low voltage level. Therefore, with different coupling of a large pixel electrode and of a small pixel electrode that both receive the same color displaying data, the voltage on the large pixel electrode is different from that on the small pixel electrode. The tilt angle of the liquid crystal between the large pixel electrode and the upper electrode is different from the tilt angle of the liquid crystal between the small pixel electrode and the upper electrode for compensating the gamma value of the color. Besides, through adjusting the value of the voltage respectively on the coupling electrode lines to compensate the gamma values of different colors and the gamma values of different colors will tend to be uniform.
    Type: Grant
    Filed: February 19, 2009
    Date of Patent: October 2, 2012
    Assignee: AU Optronics Corp.
    Inventor: Chih-Sheng Chen
  • Patent number: 8274620
    Abstract: An active device array substrate including a substrate, a plurality of scan lines, a plurality of data lines, and a plurality of pixel units, each of the pixel units formed between every neighboring two of the scan lines and data lines is provided. Each of the pixel units includes a first active device, a first pixel electrode electrically connected to a corresponding scan line and a corresponding data line through the first active device, a second active device, a second pixel electrode electrically connected to a corresponding scan line and a corresponding data line through the first active device, a second active device and a second pixel electrode electrically connected to a corresponding scan line and a corresponding data line through the second active device. The first pixel electrode has a surface area different from that of the second pixel electrode.
    Type: Grant
    Filed: October 26, 2011
    Date of Patent: September 25, 2012
    Assignee: Au Optronics Corporation
    Inventors: Chun-Chang Chiu, Jia-Hung Huang, Wen-Ju Chen
  • Patent number: 8259249
    Abstract: A display substrate includes a first pixel electrode and a second pixel electrode. The first pixel electrode includes a plurality of first electrode bars. A data line provides a data voltage to the first pixel electrode. The second pixel electrode includes a plurality of second electrode bars alternately disposed with the first electrode bars. A first power line is formed adjacent to a gate line to provide a first voltage to the second pixel electrode. A second power line crosses the first power line and is electrically connected to the first power line. A first switching element is electrically connected to the data line, the gate line and the first pixel electrode. A second switching element is electrically connected to the first power line, the gate line and the second pixel electrode.
    Type: Grant
    Filed: October 5, 2010
    Date of Patent: September 4, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Dong-Gyu Kim, Seung-Soo Baek, Mee-Hye Jung, Dong-Hyeon Ki, Sei-Hyoung Jo, Hye-Seok Na
  • 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: 8253910
    Abstract: A display is disclosed. The display includes a plurality of pixels configured to emit light. The display also includes a plurality of pixel control circuits that are each configured to regulate emission of light from a pixel. The pixel control circuits each include one or more two-terminal switching devices that include an organic semiconductor.
    Type: Grant
    Filed: March 25, 2009
    Date of Patent: August 28, 2012
    Assignee: Cbrite Inc.
    Inventor: Boo Jorgen Lars Nilsson
  • Patent number: 8253874
    Abstract: A liquid crystal display including a pixel electrode having first and second sub-pixel electrodes separated from each other; a gate line electrically connected to the first and second sub-pixel electrodes through thin film transistors, a data line electrically connected to the first and second sub-pixel electrodes through the thin film transistors, a first storage electrode line having a first storage electrode overlapped with the first sub-pixel electrode, wherein a first storage voltage is applied to the first storage electrode line as a cyclic signal; and a second storage electrode line having a second storage electrode overlapped with the second sub-pixel electrode, wherein a second storage electrode voltage opposite in phase to the first storage electrode voltage is applied to the second storage electrode line as a cyclic signal, and wherein the first and second sub-pixel electrodes are electrically connected to the same gate line and to the same data line through the thin film transistors, and the pixel
    Type: Grant
    Filed: February 12, 2009
    Date of Patent: August 28, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Dong-Gyu Kim, Hye-Seok Na
  • Patent number: 8253897
    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: July 9, 2011
    Date of Patent: August 28, 2012
    Assignees: Kyoritsu Optronics Co., Ltd
    Inventor: Hiap L. Ong
  • Patent number: 8253903
    Abstract: A first sub-pixel area and a second sub-pixel area that are provided in each of pixel areas so as to sandwich a scanning signal line 2. A first sub-pixel is arranged to include the first sub-pixel area and a section of the counter substrate which section corresponds to the first sub-pixel, area and the second sub-pixel is arranged to include the second sub-pixel area and a section of the counter substrate which section corresponds to the second sub-pixel area. A first alignment control structure is provided in the first sub-pixel and a second alignment control structure is provided in the second sub-pixel. The first alignment control structure (L1 and S1 to S4) provided in one pixel (55x) of two adjacent pixels has a shape obtained by rotating by 180° the first alignment control structure (L11, S11 to S14) provided in the other one pixel (55y) of the two adjacent pixels.
    Type: Grant
    Filed: September 26, 2007
    Date of Patent: August 28, 2012
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Kentaroh Irie, Toshihide Tsubata, Naoshi Yamada
  • Patent number: 8248566
    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: July 1, 2010
    Date of Patent: August 21, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Jang-Kun Song
  • Patent number: 8248552
    Abstract: A pixel array including first scan lines, second scan lines, data lines, sub-pixels, and common lines is provided. Each of the sub-pixels includes a first switch, a second switch, a first pixel electrode, a second pixel electrode, and a third switch. The first switch and the second switch are electrically connected to the same scan line and same data line, the first pixel electrode is electrically connected to the first switch, the second pixel electrode is electrically connected to the second switch, and the first pixel electrode and the second pixel electrode are disposed at opposite sides of the first scan line. Furthermore, the third switch has a capacitance coupling portion extending under the first pixel electrode in the neighboring sub-pixel such that a voltage adjusting capacitor is formed by the capacitance coupling portion and one of the common lines in the neighboring sub-pixel.
    Type: Grant
    Filed: January 4, 2010
    Date of Patent: August 21, 2012
    Assignee: Au Optronics Corporation
    Inventors: Tien-Lun Ting, Wen-Hao Hsu, Jenn-Jia Su
  • Patent number: 8243219
    Abstract: Each pixel of an LCD display includes a main pixel, a sub-pixel, a resistor, and a third switch. The third switch is used for controlling the charging time of the main pixel and the sub-pixel. A data signal of a main pixel of a previous pixel is utilized to pre-charge the main pixel and the sub-pixel, and then data is transmitted to the sub-pixel and the main pixel. When data transmission to the sub-pixel is ended, the data transmission path to the sub-pixel is switched off, and the data keeps being transmitted only to the main pixel. The LCD panel utilizing this method only needs to add one gate line at each of the top and bottom of the panel to realize the AMVA structure of 8-domain for the LCD panel.
    Type: Grant
    Filed: August 18, 2009
    Date of Patent: August 14, 2012
    Assignee: Chunghwa Picture Tubes, Ltd.
    Inventors: Tung-Hsin Lan, Mu-Shan Liao, Tien-Yung Huang, Chia-Chun Fang
  • 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: 8228452
    Abstract: A thin film transistor array panel is provided, which includes: an insulating substrate; a gate line formed on the substrate and including a gate electrode; a gate insulating layer formed on the gate line; a semiconductor layer formed on the gate insulating layer opposite the gate electrode; a data line formed on the gate insulating layer and including a first source electrode located on the semiconductor layer; first and second drain electrodes formed on the semiconductor layer, separated from each other and overlapping the gate electrode; a passivation layer formed on the data line and the first and second drain electrodes; and first and second pixel electrodes electrically connected to the first and second electrodes, respectively, wherein an overlapping area between the gate electrode and the first drain electrode is different from an overlapping area between the gate electrode and the second drain electrode.
    Type: Grant
    Filed: December 3, 2009
    Date of Patent: July 24, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jung-Hee Lee, Yoon-Sung Um, Jong-Ho Son, Jae-Jin Lyu
  • Patent number: 8228475
    Abstract: A liquid crystal display includes a first substrate, a gate line and first and second data lines disposed on the first substrate, a first thin film transistor connected to the gate line and the first data line, a second thin film transistor connected to the gate line and the second data line, a color filter disposed on the first substrate, a protrusion disposed on the color filter, a first pixel electrode including a first linear electrode disposed on the protrusion and connected to the first thin film transistor, a second pixel electrode including a second linear electrode disposed on the protrusion and connected to the second thin film transistor, a second substrate disposed facing the first substrate, and blue phase liquid crystal disposed between the first substrate and the second substrate.
    Type: Grant
    Filed: July 8, 2009
    Date of Patent: July 24, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Hoon Kang, Yong-Hwan Shin, Hong-Jo Park, Jae-Sung Kim, Yang-Ho Jung
  • Patent number: 8228456
    Abstract: A liquid crystal display includes; a first substrate, a gate line disposed on the first substrate, a first data line disposed substantially perpendicularly to the gate line on the first substrate, and which insulates and the gate line, a first thin film transistor connected to the gate line and the first data line, a first pixel electrode connected to the first thin film transistor, a liquid crystal capacitor including the first pixel electrode and a second pixel electrode as two terminals thereof, and a liquid crystal layer disposed between the first pixel electrode and the second pixel electrode, and a short transistor having a control terminal connected to a previous gate line, and which is controlled to short the first pixel electrode to a voltage approaching a voltage of the second pixel electrode.
    Type: Grant
    Filed: November 16, 2009
    Date of Patent: July 24, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Sung-Woon Kim, Hee-Seop Kim, Hyang-Yul Kim, Joo-Nyung Jang, Hwa-Sung Woo, Cheol Shin, Dong-Chul Shin
  • Patent number: 8223290
    Abstract: A liquid crystal display includes a substrate, a plurality of a gate line and a plurality of a data line disposed on the substrate, a plurality of a thin film transistor each connected to a gate line and a data line, a plurality of a pixel electrode each connected to a thin film transistor, a common electrode facing the pixel electrodes, and a liquid crystal layer between the pixel electrodes and the common electrode. Each of the pixel electrodes includes a first longitudinal edge adjacent to a first data line and a second longitudinal edge adjacent to a second data line adjacent to the first data line. A first distance between an edge of the first longitudinal edge and the first data line is larger than a second distance between the second longitudinal edge and an edge of the second data line.
    Type: Grant
    Filed: July 30, 2009
    Date of Patent: July 17, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Seong-Young Lee, Seung-Soo Baek, Yun-Jung Cho, Young-Goo Song
  • Patent number: 8218100
    Abstract: An conductive coating serves as a light shield film and is kept at a give voltage. A metal interconnection is located in the same layer as a source line and connected to the drain of a thin-film transistor. An interlayer insulating film is constituted of at least lower and upper insulating layers and formed between the conductive coating and the source line. According to one aspect of the invention, an auxiliary capacitor is formed by the metal interconnection and the conductive coating serving as both electrodes and at least the lower insulating layer film serving as a dielectric. The auxiliary capacitor is formed in a region of the interlayer insulating film in which the upper insulating layer has been removed by etching. According to another aspect of the invention, the conductive coating has a portion that is in contact with the lower insulating layer in a region where the conductive coating coextends with the metal interconnection.
    Type: Grant
    Filed: February 25, 2011
    Date of Patent: July 10, 2012
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Hisashi Ohtani, Yasushi Ogata, Yoshiharu Hirakata
  • Publication number: 20120162562
    Abstract: A liquid crystal display device having an active matrix display panel with pixel regions having two pixel electrodes and two TFT elements thereon. The two pixel electrodes are formed in each of the pixel regions, the two pixel electrodes are connected to different ones of the two TFT elements and one counter electrode is formed in each of the pixel regions, the counter electrode being formed between a layer of the pixel electrode and a first substrate. Each pixel electrode in the pixel regions has plural slits, the slits in each pixel electrode extending in two directions, and the slits extend in a direction which is not parallel to an extending direction of either of a video signal line or a scanning signal line formed on the first substrate. The two pixel electrodes in the pixel region have adjacent pixel electrode sides which are parallel to each other.
    Type: Application
    Filed: March 2, 2012
    Publication date: June 28, 2012
    Inventor: Kikuo ONO
  • Patent number: 8194216
    Abstract: A display substrate includes an insulation substrate, an (n)-th gate line, a data line, first and second source electrodes, first and second drain electrodes, a pixel electrode, a third drain electrode, and a storage line. The first source electrode overlaps a first portion of the (n)-th gate line and is electrically connected to the data line. The first and second drain electrodes overlap a second portion of the (n)-th gate line. The pixel electrode is connected to the first drain electrode. The second source electrode overlaps a first portion of an (n+1)-th gate line, while the third drain electrode overlaps a second portion thereof. The storage line overlaps a portion of each of the pixel electrode and the second and third drain electrodes. The second source electrode is formed by extending the second drain electrode in a direction substantially from the (n)-th gate line towards the (n+1)-th gate line.
    Type: Grant
    Filed: July 15, 2008
    Date of Patent: June 5, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Yoon-Sung Um, Jae-Jin Lyu, Seung-Beom Park
  • Patent number: 8194199
    Abstract: A pixel includes a first subpixel and a second subpixel. The first subpixel includes a first switching element connected to a first gate line and a data line, a first liquid crystal capacitor connected to the first switching element, and a first storage capacitor connected to the first switching element. The second subpixel includes a second switching element connected to a second gate line and the data line, a second liquid crystal capacitor connected to the second switching element, and a second storage capacitor connected to the second switching element. At least one of a ratio of capacitances between a first parasitic capacitor formed in the first switching element and a second parasitic capacitor formed in the second switching element and a ratio of capacitances between the first storage capacitor and a second storage capacitor is determined based on a ratio of the first liquid crystal capacitor and the second liquid crystal capacitor.
    Type: Grant
    Filed: December 2, 2005
    Date of Patent: June 5, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Kyoung-Ju Shin, Chang-Hun Lee
  • Patent number: 8194201
    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: August 30, 2011
    Date of Patent: June 5, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Yoon-Sung Um, Hoon Kim, Hye-Ran Yoo, Jae-Jin Lyu, Seung-Beom Park
  • Patent number: 8194200
    Abstract: Displays using a low cost method to implement switching element point inversion driving schemes while using integrated circuits that are designed to implement switching element row inversion or switching element column driving schemes are described. In one display, a first color dot is on a first side of a control line and a second color dot is on a second side of the control line. A first switching element is coupled to the first control line and the first color dot and a second switching element is coupled to the second color dot and the control line. Thus the control line controls color dots on two different rows or two different columns.
    Type: Grant
    Filed: May 21, 2007
    Date of Patent: June 5, 2012
    Assignees: Kyoritsu Optronics, Co., Ltd
    Inventor: Hiap L. Ong
  • Patent number: 8184224
    Abstract: Herein disclosed a display apparatus including: a pixel array having a matrix of pixel circuits each including respective electrooptical elements for determining a display brightness level and respective drive circuits for driving the electrooptical elements; wherein adjacent two of the pixel circuits are paired with each other, and each of the drive circuits of the adjacent two pixel circuits includes at least one transistor having a low-concentration source/drain region or an offset region of an offset gate structure, the electrooptical elements and the drive circuits of the adjacent two pixel circuits being laid out such that a line interconnecting a drain region and a source region of the at least one transistor extends parallel to a direction of pixel columns of the pixel circuits of the pixel array.
    Type: Grant
    Filed: July 25, 2007
    Date of Patent: May 22, 2012
    Assignee: Sony Corporation
    Inventors: Mitsuru Asano, Seiichiro Jinta, Masatsugu Tomida, Hiroshi Fujimura
  • Patent number: 8184220
    Abstract: A liquid crystal display (“LCD”) capable of improving display quality includes a first insulating substrate, gate wiring lines formed on the first insulating substrate and extending in a first direction, pixel electrodes, each of which includes first and second sub-pixel electrodes that are, respectively, applied with different data voltages from first and second wiring lines insulated from and crossing the gate wiring lines, extending in a second direction and an insulting layer interposed between the first data wiring line and the second data wiring line overlapped by the first data wiring line. Therefore, an aperture ratio of the LCD increase because the first data wiring line overlapped the second data wiring line have less area between pixel electrodes. A display quality of the LCD improves.
    Type: Grant
    Filed: June 27, 2008
    Date of Patent: May 22, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jang-Il Kim, Hyun Park, You-Hyun Jeong, Seung-Suk Yang, Jeong-Eun Park
  • Patent number: 8184226
    Abstract: A thin film transistor (TFT) structure is provided. The TFT comprises a gate, a first electrode, a second electrode, a dielectric layer, and a channel layer. By overlapping the area between the first electrode and the gate, the TFT structure acquires a parasitic capacitor that is unaffected by manufacture deviations. Therefore, the TFT needs no compensation capacitor, thereby, increasing the aperture ratio of the TFT.
    Type: Grant
    Filed: September 4, 2007
    Date of Patent: May 22, 2012
    Assignee: Au Optronics Corp.
    Inventors: Yu-Min Lin, Feng-Yuan Gan
  • Patent number: 8179492
    Abstract: The invention relates to a liquid crystal display device and provides a liquid crystal display device which can achieve high display quality. A liquid crystal display device is provided with first and second TFTs each having a gate electrode connected to an nth gate bus line and a drain electrode connected to a drain bus line; a first pixel electrode connected to a source electrode of the first TFT; a second pixel electrode connected to a source electrode of the second TFT; a third TFT having a gate electrode connected to an (n+1)th gate bus line and a source electrode connected to the second pixel electrode; and a buffer capacitance portion having a buffer capacitance electrode which is formed in the same layer as the first and second pixel electrodes and is connected to a drain electrode of the third TFT and a buffer capacitance electrode connected to a storage capacitance bus line.
    Type: Grant
    Filed: October 6, 2010
    Date of Patent: May 15, 2012
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Yasutoshi Tasaka, Yohei Nakanishi, Masakazu Shibasaki, Tsuyoshi Kamada, Hidefumi Yoshida, Hideaki Tsuda
  • Patent number: 8174636
    Abstract: An exemplary thin film transistor (TFT) substrate assembly includes a substrate, a plurality of gate lines disposed on an inner surface of the substrate, a plurality of data lines disposed insulated with the gate lines. The plurality of gate lines and the plurality of data lines define a plurality of pixel regions. Each pixel region includes a first switch element, a second switch element, a first pixel electrode, and a second pixel electrode. The first switch element and the second switch element are connected with a same gate line from the plurality of gate lines. The first pixel electrode is applied with data signals from a data line from the plurality of data lines via the first switch element. The second pixel electrode is applied with data signals from the data line from the plurality of data lines via the second switch element and a voltage dividing element.
    Type: Grant
    Filed: August 11, 2008
    Date of Patent: May 8, 2012
    Assignee: Chimei Innolux Corporation
    Inventors: Chien-Cheng Chen, Hung-Yu Chen, Yu-Cheng Lin, Wen-Ming Hung, Yung-Hsun Wu, Chueh-Ju Chen, Ying-Tsung Lin
  • Patent number: 8169561
    Abstract: A pixel structure including an active device, a pixel electrode connected with the active device, a bottom electrode disposed under the pixel electrode, upper electrodes disposed between the pixel electrode and the bottom electrode and connected with the pixel electrode, a first dielectric layer disposed between the bottom electrode and the upper electrodes and a second dielectric layer disposed between the upper electrodes and the pixel electrode is provided. The total area of the upper electrodes overlapping with the bottom electrode is A, and the overlapping portion of the pixel electrode and each upper electrode includes a contact region and a reserved region having total area B. The dielectric constant and thickness of the first dielectric layer is ?1 and d1; and for second dielectric layer ?2 and d2, wherein 0.5<(?1·d2·A)/(?2·d1·B)<1.5.
    Type: Grant
    Filed: July 12, 2005
    Date of Patent: May 1, 2012
    Assignee: Au Optronics Corporation
    Inventors: Wei-Kai Huang, Yi-Jen Chen, Tzu-Chieh Lai, Chiung-Pin Wang
  • Patent number: 8164702
    Abstract: A display substrate includes; a dual transistor electrically connected to a first gate line and a data line, which is disposed in a direction substantially perpendicular to the first gate line, the dual transistor including a first drain electrode and a second drain electrode, a pixel electrode having a first pixel part and a second pixel part which are respectively connected to the first drain electrode and the second drain electrode, a connection transistor electrically connected to the second pixel part and a second gate line which is adjacent to the first gate line, the connection transistor comprising a connection drain electrode, a voltage-decreasing electrode extended from a connection drain electrode of the connection transistor a voltage-decreasing line extended in substantially the same direction as the first and second gate lines, and disposed on a data insulation layer overlapping the voltage-decreasing electrode and the data insulation layer.
    Type: Grant
    Filed: July 15, 2009
    Date of Patent: April 24, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Kee-Bum Park, Eun Cho, Dong-Gyu Kim
  • Patent number: 8164730
    Abstract: A liquid crystal display includes a substrate and a plurality of pixel electrodes that are formed on the substrate, each of the pixel electrodes including first and second subpixel electrodes, wherein the first and second subpixel electrodes are adjacently disposed in a lateral direction. Each of the first and second subpixel electrodes includes at least two parallelogram shaped electrode pieces having different inclination directions and at least one of electrode pieces of the second subpixel electrode is positioned on or under the first subpixel electrode.
    Type: Grant
    Filed: August 28, 2006
    Date of Patent: April 24, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Dong-Gyu Kim, Hee-Joon Kim
  • Patent number: 8154678
    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: February 23, 2011
    Date of Patent: April 10, 2012
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Hajime Kimura, Shunpei Yamazaki