Plural Nonredundant Transistors Per Pixel Patents (Class 349/48)
  • Patent number: 8922469
    Abstract: A display panel includes a first sub-pixel electrode and a second sub-pixel electrode alternating with each other to form a horizontal electric field, a first data line transmitting a first data voltage to the first sub-pixel electrode, and a second data line transmitting a second data voltage to the second sub-pixel electrode, wherein the second sub-pixel electrode is formed to overlap the first and second data lines.
    Type: Grant
    Filed: October 14, 2009
    Date of Patent: December 30, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Kwang-Chul Jung, Chong-Chul Chai, Mee-Hye Jung
  • Patent number: 8902374
    Abstract: It is an object to decrease the number of transistors connected to a capacitor. In a structure, a capacitor and one transistor are included, one electrode of the capacitor is connected to a wiring, and the other electrode of the capacitor is connected to a gate of the transistor. Since a clock signal is input to the wiring, the clock signal is input to the gate of the transistor through the capacitor. Then, on/off of the transistor is controlled by a signal which synchronizes with the clock signal, so that a period when the transistor is on and a period when the transistor is off are repeated. In this manner, deterioration of the transistor can be suppressed.
    Type: Grant
    Filed: February 19, 2013
    Date of Patent: December 2, 2014
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventor: Atsushi Umezaki
  • Patent number: 8896773
    Abstract: The present invention provides an array of FPR 3D liquid crystal display, including a plurality of pixel units and circuit affecting on the pixel unit. The pixel unit is divided into main pixel area and sub pixel area, and the circuit is paid out between pixel units. The present invention also provides an FPR 3D liquid crystal display panel. As such, the present invention can improve opening ratio and penetration ratio of liquid crystal display panel in 3D display mode to increase luminance of liquid crystal display panel.
    Type: Grant
    Filed: September 25, 2012
    Date of Patent: November 25, 2014
    Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd
    Inventor: Zui Wang
  • Patent number: 8890785
    Abstract: A display panel and its gate driving circuit are provided. The gate driving circuit includes a plurality of shift registers. Each of the shift registers includes a first scan signal generator for generating a first scan signal, a second scan signal generator for generating a second scan signal, a first control unit for generating a first control signal, and a second control unit for generating a second control signal. Here, the first control signal and the second control signal are shared by the first scan signal generator and the second scan signal generator. Based on the above, the abatement of signal intensity of the first scan signal and the second scan signal caused by circuit sharing can be precluded, and a chip area occupied by each of the shift registers can be reduced.
    Type: Grant
    Filed: April 18, 2012
    Date of Patent: November 18, 2014
    Assignee: Au Optronics Corporation
    Inventors: Kun-Yueh Lin, Chun-Hsin Liu, Chun-Huan Chang, Ya-Ting Lin
  • Patent number: 8878832
    Abstract: Provided is a pixel circuit which includes a plurality of subpixel circuits and which makes it possible to suppress overshooting of electric potentials of the subpixel circuits to a small level. A pixel circuit (PIX1) includes a first subpixel circuit (PIXA) and a second subpixel circuit (PIXB). The first subpixel circuit (PIXA) includes a first display element (ClcA), a first node (nA), a first external connection terminal (P1), and a first switching element (T1). The second subpixel circuit (PIXB) includes a second display element (ClcB), a second node (nB), a second external connection terminal (P2), a third external connection terminal (P3), a second switching element (T2), and a third switching element (T3). The first node (nA) and the second node (nB) are connected to each other via a first capacitor (C2).
    Type: Grant
    Filed: August 31, 2010
    Date of Patent: November 4, 2014
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Seiji Ohhashi, Tsuyoshi Kamada, Tetsuya Ide, Shohei Katsuta
  • Patent number: 8879015
    Abstract: A liquid crystal display device includes a first substrate, a first thin film transistor formed on the first substrate, a pixel electrode and a common electrode formed above the first thin film transistor of the first substrate, a liquid crystal layer formed above the pixel electrode and the common electrode, a second substrate provided above the pixel electrode and the common electrode via the liquid crystal layer, a shield electrode formed on a substantially entire surface of the liquid crystal layer side of the second substrate, a switch device being electrically connected to the shield electrode and the interconnection, wherein the switch device is turned on when a potential of the shield electrode is larger than the specific potential of the interconnection and a difference between the potential of the shield electrode and the specific potential of the interconnection is larger than predetermined potential.
    Type: Grant
    Filed: December 9, 2009
    Date of Patent: November 4, 2014
    Assignee: Japan Display West Inc.
    Inventors: Shuhei Yoshida, Joji Nishimura, Yukiya Hirabayashi, Hideki Uehara
  • Patent number: 8866233
    Abstract: An object is to provide a semiconductor device having a novel structure which includes a combination of semiconductor elements with different characteristics and is capable of realizing higher integration. A semiconductor device includes a first transistor, which includes a first channel formation region including a first semiconductor material, and a first gate electrode, and a second transistor, which includes one of a second source electrode and a second drain electrode combined with the first gate electrode, and a second channel formation region including a second semiconductor material and electrically connected to the second source electrode and the second drain electrode.
    Type: Grant
    Filed: January 3, 2011
    Date of Patent: October 21, 2014
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventor: Shunpei Yamazaki
  • Patent number: 8860900
    Abstract: A liquid crystal display includes a first substrate including pixels, each having a transmissive area and a reflective area, a second substrate, and a liquid crystal layer disposed between the first and second substrates. Each of the pixels includes first and second thin film transistors which output a data signal in response to a first gate signal, a transmissive pixel electrode disposed in the transmissive area and electrically connected to the first thin film transistor to charge a first pixel voltage based on the data signal, a reflective pixel electrode disposed in the reflective area and electrically connected to the second thin film transistor to charge a second pixel voltage based on the data signal, and a voltage controller which controls the first pixel voltage and the second pixel voltage in response to a second gate signal, which is generated after the first gate signal.
    Type: Grant
    Filed: October 15, 2013
    Date of Patent: October 14, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Youn Hak Jeong, Jooseok Yeom, Keunchan Oh, Yoonsung Um, Heehwan Lee, Kyuwan Ryu, Jaejin Lyu, Myungjae Park
  • Patent number: 8860899
    Abstract: 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 a 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 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.
    Type: Grant
    Filed: May 18, 2012
    Date of Patent: October 14, 2014
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Hisashi Ohtani, Yasushi Ogata, Yoshiharu Hirakata
  • Patent number: 8854568
    Abstract: Embodiments of the disclosed technology provide an array substrate comprising a plurality of pixel units each of which comprises a gate scanning line, a source scanning line, a thin film transistor (TFT), a storage capacitor, and at least one photosensitive transistor, wherein a gate electrode of the photosensitive transistor and a gate electrode of the TFT are connected with the same gate scanning line, a drain electrode of the photosensitive transistor and a drain electrode of the TFT are connected with the storage capacitor, a source electrode of the TFT is connected with the source scanning line, and a source electrode of the photosensitive transistor is connected with its own gate electrode. In addition, the embodiments of the disclosed technology also provide a liquid crystal panel comprising the array substrate and a display device comprising the liquid crystal panel.
    Type: Grant
    Filed: March 23, 2012
    Date of Patent: October 7, 2014
    Assignee: Boe Technology Group Co., Ltd.
    Inventors: Yongxian Xu, Changlin Leng
  • Patent number: 8854561
    Abstract: A LCD panel in which a pixel has a first sub-pixel area and a second sub-pixel area, each area having a storage capacitor. Each pixel has a first gate line for providing a first gate-line signal for charging the first and second storage capacitors, and a second gate line for providing a second gate-line signal for removing part of the charges in the second storage capacitor to a third capacitor after the first gate-line signal has passed. The width of the first and second gate-line signals and their timing can be varied so that the first gate-line signal provided to a row can be used as the second gate-line signal to one of the preceding rows. In some embodiments, a pixel in each row has a duplicate pixel arranged to similarly receive the first and second gate-line signals, but data signals are received from different data lines.
    Type: Grant
    Filed: November 13, 2009
    Date of Patent: October 7, 2014
    Assignee: Au Optronics Corporation
    Inventors: Pei-Chun Liao, Tien-Lun Ting, Wen-Hao Hsu, Hung-Lung Hou
  • Patent number: 8848122
    Abstract: A display apparatus includes a plurality of pixels. At least one of the pixels includes a gate line, a data line, a first storage line spaced apart from the gate line, a second storage line spaced apart from the gate line and the first storage line, first and second switching devices electrically connected to the gate line and the data line, a first liquid crystal capacitor connected to the first switching device and including the liquid crystal layer as its dielectric substance, a second liquid crystal capacitor connected to the second switching device and including the liquid crystal layer as its dielectric substance, a first storage capacitor connected between the first switching device and one of the first and second storage lines, and a second storage capacitor connected between the second switching device and a remaining one of the first and second storage lines.
    Type: Grant
    Filed: November 28, 2011
    Date of Patent: September 30, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Kwang-chul Jung, Chongchul Chai, Kyoungju Shin, Joon-Chul Goh, Young-Soo Yoon
  • Patent number: 8842229
    Abstract: Disclosed is an active matrix substrate (20a) that includes: an insulating substrate (10a); a first thin film transistor (5a) that is formed on the insulating substrate (10a) and that includes a first oxide semiconductor layer (13a) having a first channel region (Ca); a second thin film transistor (5b) that is formed on the insulating substrate (10a) and that includes a second oxide semiconductor layer (13b) having a second channel region (Cb); and an interlayer insulating film (17) that covers the first oxide semiconductor layer (13a) and the second oxide semiconductor layer (13b). A channel protective film (25), which is formed of a material different from that of the interlayer insulating film (17), is provided between the second oxide semiconductor layer (13b) and the interlayer insulating film (17) on the second channel region (Cb) in the second oxide semiconductor layer (13b).
    Type: Grant
    Filed: January 12, 2011
    Date of Patent: September 23, 2014
    Assignee: Sharp Kabushiki Kaisha
    Inventor: Tadayoshi Miyamoto
  • Patent number: 8830414
    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: September 23, 2011
    Date of Patent: September 9, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Hee-Seob Kim, Jong-Lae Kim, Young-Chol Yang, Sung-Kyu Hong
  • Patent number: 8817201
    Abstract: An array substrate comprises data lines, gate lines, thin film transistors and pixel electrodes formed on a base substrate. Pixel units are defined by intersecting the data lines and the gate lines, the thin film transistors are formed at the intersections of the data lines and the gate lines, and the data lines extend across each of the pixel units in the middle of the pixel units. At least two thin film transistors for controlling a same pixel electrode are respectively formed on both sides of the data line in each pixel unit.
    Type: Grant
    Filed: June 18, 2012
    Date of Patent: August 26, 2014
    Assignee: Beijing Boe Optoelectronics Technology Co., Ltd.
    Inventors: Meihua Hong, Ziqi Xia, Zhinan Zhang
  • Patent number: 8817215
    Abstract: A pixel structure including a substrate, a scan line, a first data line and a first pixel unit is provided. The scan line and the first data line are disposed on the substrate. The first pixel unit includes a first active device and a first pixel electrode. The first active device is electrically connected to the scan line and the first data line. The first pixel electrode electrically connected to the first active device has a first stripe pattern and a plurality of first branches. One side of the first stripe pattern is connected to the first branches extended toward the scan line, and the other side of the first stripe pattern is overlapped with the scan line. The overlapped width of the first stripe pattern with the scan line is substantially equal to 40% to 90% of the width of the first stripe pattern.
    Type: Grant
    Filed: April 11, 2010
    Date of Patent: August 26, 2014
    Assignee: Au Optronics Corporation
    Inventors: Wei-Yuan Cheng, Chin-An Tseng, Yen-Heng Huang, Chia-Hui Pai, Chung-Kai Chen, Wen-Hsien Tseng, Ting-Yi Cho, Chia-Yu Lee
  • Patent number: 8810745
    Abstract: A liquid crystal display according to exemplary embodiments of the present invention is provided in which an additional storage capacitor is formed to a subpixel electrode connected to the dividing switching element, thereby increasing the total storage capacitance. Due to the additional storage capacitor, the kickback voltage difference between two subpixels that may be generated by the additional dividing switching element is eliminated such that the display quality deterioration has been improved by preventing the kickback voltage difference between the two subpixels.
    Type: Grant
    Filed: June 28, 2012
    Date of Patent: August 19, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Hoon Kim, Ki Chul Shin, Su Jeong Kim, Ho Kil Oh, Jae-Hoon Jung
  • Patent number: 8803855
    Abstract: A liquid crystal display includes a plurality of pixels. Each pixel of the plurality of pixels includes a gate line which receives a gate signal; a data line which receives a data voltage; a first sub-pixel including a first transistor connected to the gate line and the data line, wherein the first transistor outputs the data voltage in response to the gate signal; and a first liquid crystal capacitor connected to the first transistor. Each pixel further includes a second sub-pixel including a second transistor connected to the gate line and the data line, wherein the second transistor outputs the data voltage in response to the gate signal; and a second liquid crystal capacitor connected to the second transistor; a resistor connected to the second transistor; and a first sharing capacitor connected to the resistor, wherein the first sharing capacitor receives the data voltage through the resistor.
    Type: Grant
    Filed: September 13, 2010
    Date of Patent: August 12, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Joon-Chul Goh, Young-Soo Yoon, Soo-Wan Yoon, Chongchul Chai
  • Patent number: 8803777
    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: March 29, 2013
    Date of Patent: August 12, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Hee-Wook Do, Seung-Beom Park, Hoon Kim, Hye-Ran You, Jian Gang Lu, Hee-Seop Kim, Young-Chol Yang, Seoung-Hoon Lee
  • Publication number: 20140218347
    Abstract: In a liquid crystal display one pixel is divided into two subpixels, the two subpixels are connected to two subdata lines extending from one data line, and a desired data voltage is applied by using a data driving switching element connected to the subdata line, thereby reducing the number of data lines needed to reduce the cost of the driver and preventing a lack of space to mount the data driver while dividing one pixel into two subpixels and differently applying voltages of the two subpixels.
    Type: Application
    Filed: January 29, 2014
    Publication date: August 7, 2014
    Applicant: SAMSUNG DISPLAY CO., LTD.
    Inventors: CHEOL-GON LEE, Chong Chul Chai, Joon-Chul Goh, Yeong-Keun Kwon, Jong Hee Kim
  • Patent number: 8797486
    Abstract: A liquid crystal display having enhanced transmittance in which the pixel electrode includes a micro-slit pattern and overlaps a control electrode on the insulation layer so that an effective voltage difference is formed between the pixel electrode and the control electrode to control the directional characteristics of the liquid crystal molecules.
    Type: Grant
    Filed: June 19, 2008
    Date of Patent: August 5, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Hwa-Sung Woo, Hee-Seop Kim
  • Patent number: 8792064
    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 common line under the second pixel electrode to form a capacitor.
    Type: Grant
    Filed: July 12, 2011
    Date of Patent: July 29, 2014
    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: 8792065
    Abstract: The present invention discloses a sub-pixel display structure and a liquid crystal display panel using the same. The sub-pixel display structure includes two electrode portions. One of the electrode portions can perform charge-sharing via a charge-sharing switch. At least one of the two electrode portions is further connected to an extra electrode portion. When being used in a 3D liquid crystal display panel having a patterned phase retarder film, the sub-pixel display structure can satisfy the requirement of 3D view angle by making the extra electrode portion to be shielded by black matrix, and the two electrode portions still remain operatable so that a color washout phenomenon under a large viewing angle can be reduced even in a 3D liquid crystal display panel.
    Type: Grant
    Filed: August 8, 2012
    Date of Patent: July 29, 2014
    Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd.
    Inventors: Zan Yang, Chih-Wen Chen, Chia-chiang Hsiao
  • Patent number: 8773605
    Abstract: A liquid crystal display includes first and second gate lines and first and second data lines, on a first substrate, a first thin film transistor connected to the first gate and data lines and including a first source and drain electrode, a second thin film transistor connected to the second gate and data lines and including a second source and drain electrode, first and second pixel electrodes contacting a portion of the first and second drain electrodes, respectively, a passivation layer on the first and second pixel electrodes and the first and second thin film transistors, and a reference electrode on a passivation layer and overlapping the first pixel electrode and the second pixel electrode. The reference electrode includes a plurality of branch electrodes. The first thin film transistor is right of the first data line and the second thin film transistor is left of the second data line.
    Type: Grant
    Filed: September 18, 2013
    Date of Patent: July 8, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Hyun-Wuk Kim, Jang-Kun Song, Seon-Ah Cho, Eun-Je Jang, You-Sik Shin
  • Patent number: 8773604
    Abstract: A horizontal electric field type liquid crystal display is disclosed. The horizontal electric field type liquid crystal display includes a gate line on a substrate, a data line crossing the gate line with a gate insulating layer interposed between the gate line and the data line, the gate line and the data line defining a pixel area, a thin film transistor (TFT) connected to the gate line and the data line, a pixel electrode that is connected to the TFT to receive a data signal, a common electrode pattern on which a common voltage is supplied, and a pixel common electrode that is electrically connected to the common electrode pattern to form a horizontal electric field together with the pixel electrode. The pixel common electrode contacts the common electrode pattern in a non-display area of an upper portion at one side of the pixel area.
    Type: Grant
    Filed: December 2, 2009
    Date of Patent: July 8, 2014
    Assignee: LG Display Co., Ltd.
    Inventors: Sungkeun Lee, Monsoo Kang, Jongsang Pyo
  • Patent number: 8767159
    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: April 20, 2012
    Date of Patent: July 1, 2014
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventor: Hajime Kimura
  • Patent number: 8767137
    Abstract: In a liquid crystal display device, the reduction of power consumption is realized by reddening a backlight while maintaining a white balance. An aperture ratio of a red subpixel and an aperture ratio of a blue subpixel are set such that, in a state where an aperture ratio of a green subpixel in each pixel of a liquid crystal panel is fixed to a desired value, white brightness efficiency takes a maximum value which is set based on a balance between light emission efficiency which is increased corresponding to lowering of a color temperature of the backlight and transmissivity of the pixel which is decreased corresponding to the increase of the aperture ratio of the blue subpixel.
    Type: Grant
    Filed: January 28, 2011
    Date of Patent: July 1, 2014
    Assignee: Japan Display Inc.
    Inventors: Ikuo Hiyama, Kentaro Ojima, Masahiro Ishii, Shisei Katou, Yoshiro Mikami
  • Patent number: 8760597
    Abstract: Example embodiments are directed to a switching device of an active display device and a method of driving the switching device, such that electrical reliability of the active display device is improved. The switching device of the active display device includes a plurality of thin film transistors (TFTs) that are connected in series. Except for a refresh time duration during which the plurality of TFTs of the switching device are simultaneously turned ON, a positive voltage is applied to at least one of the plurality of TFTs of the switching device so that a reliability of the switching device may be improved.
    Type: Grant
    Filed: July 28, 2010
    Date of Patent: June 24, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Kyoung-seok Son, Kwang-hee Lee, Jang-yeon Kwon, Ji-sim Jung
  • Patent number: 8743304
    Abstract: A liquid crystal display includes a substrate including a longer first side and a shorter second side, a plurality of gate lines disposed on the substrate, a plurality of data lines disposed on the substrate perpendicular to and insulated from the gate lines, and a plurality of pixel electrodes, each pixel electrode electrically connected to a data line by a switching element, wherein a number of the gate lines is about half of a number of the pixel electrodes, and the data lines extend in a direction which is substantially parallel to a direction of the first side.
    Type: Grant
    Filed: May 5, 2009
    Date of Patent: June 3, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Yoon-Jang Kim, Yeong-Keun Kwon, Soon-Il Ahn, Kyung-Ho Park
  • Patent number: 8736781
    Abstract: A liquid crystal display device includes: a first gate line and a second gate line on a first substrate; a first data line and a second data line crossing the first and second gate lines to define a pixel region; a first thin film transistor connected to the first gate line and the first data line; a second thin film transistor connected to the first gate line and the second data line; a first pixel electrode in the pixel region and connected to the first thin film transistor; a second pixel electrode in the pixel region, connected to the second thin film transistor and including at least one opening therein; a common electrode on a second substrate; and a liquid crystal layer between the second pixel electrode and the common electrode.
    Type: Grant
    Filed: June 21, 2010
    Date of Patent: May 27, 2014
    Assignee: LG Display Co., Ltd.
    Inventor: Kyung-Eon Lee
  • Patent number: 8724042
    Abstract: A twisted nematic liquid crystal display device includes a first substrate, a plurality of gate lines and a plurality of data lines formed on the first substrate, a plurality of pixels connected to the gate lines and the data lines and each pixel having a first subpixel and a second subpixel, a first subpixel electrode formed in the first subpixel, and a second subpixel electrode formed in the second subpixel. The voltage of the first subpixel electrode is greater than the voltage of the second subpixel electrode, and a ratio of the area of the second subpixel electrode to the area of the first subpixel electrode is in the range of 0.66 to 1.5.
    Type: Grant
    Filed: August 9, 2011
    Date of Patent: May 13, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Sung-Hwan Hong, Soon-Joon Rho, Jae-Soo Jang, Hee-Seop Kim
  • Patent number: 8711314
    Abstract: It is an object to provide a liquid crystal display device which has excellent viewing angle characteristics and higher quality. The present invention has a pixel including a first switch, a second switch, a third switch, a first resistor, a second resistor, a first liquid crystal element, and a second liquid crystal element. A pixel electrode of the first liquid crystal element is electrically connected to a signal line through the first switch. The pixel electrode of the first liquid crystal element is electrically connected to a pixel electrode of the second liquid crystal element through the second switch and the first resistor. The pixel electrode of the second liquid crystal element is electrically connected to a Cs line through the third switch and the second resistor. A common electrode of the first liquid crystal element is electrically connected to a common electrode of the second liquid crystal element.
    Type: Grant
    Filed: March 11, 2013
    Date of Patent: April 29, 2014
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventor: Hajime Kimura
  • Patent number: 8698968
    Abstract: A liquid crystal display includes a first substrate, a gate line, a data line, first-third power lines located on the first substrate, first-third sub-pixels, where a switching element of each is connected to the gate line and the data line, a second substrate, a common electrode that is formed on the second substrate, a liquid crystal layer located between the first and second substrates, and a power voltage driver outputting a low voltage during a first period and a high voltage during a subsequent second period to the first power line, a constant voltage during both periods to the second power line, and the high voltage during the first period and the low voltage during the second period to the third power line. The first power line, the second power line and the third power line overlap the first sub-pixel, the second sub-pixel, and the third sub-pixel, respectively.
    Type: Grant
    Filed: June 15, 2011
    Date of Patent: April 15, 2014
    Assignee: Samsung Display Co. Ltd.
    Inventors: Kyoung Ju Shin, Hak Sun Chang, Kyoung Tae Kim, Jun Woo Lee, Min-Sik Jung
  • Patent number: 8692949
    Abstract: A TFT-LCD array substrate, a manufacturing method thereof and a liquid crystal display panel are provided in the invention. The TFT-LCD array substrate comprises a plurality of first gate lines and a plurality of first data lines, and a plurality of pixel regions are defined by intersecting the first gate lines and the first data lines with each other. A first pixel electrode and a first TFT are formed in each of the pixel regions, and a second TFT and a second pixel electrode are further comprised in each of the pixel regions. The second TFT is connected with the second pixel electrode, the first pixel electrode and the second pixel electrode form the voltage difference to drive the reversion of the liquid crystal molecules, and the first TFT and the second TFT are turned on or off simultaneously.
    Type: Grant
    Filed: March 30, 2010
    Date of Patent: April 8, 2014
    Assignee: Beijing Boe Optoelectronics Technology Co., Ltd.
    Inventors: Xin Zhao, Xing Ming, Weifeng Zhou, Wenyu Zhang, Jian Guo
  • Patent number: 8692967
    Abstract: A pixel array including a plurality of scan lines, a plurality of data lines, and a plurality of sub-pixel is provided. Each of the sub-pixel arranged in the nth row includes a first switch, a second switch, a first pixel electrode, a second pixel electrode, and a third switch, wherein the first switch and the second switch are electrically connected to the nth scan line and the mth data line, the first pixel electrode is electrically connected to the first switch, the second pixel electrode is electrically connected to a signal output terminal of the second switch. The first pixel electrode has a first aperture above the signal output terminal. The third switch is electrically connected to the (n+1)th scan line and the second pixel electrode, and the second pixel electrode has a second aperture above a floating terminal of the third switch.
    Type: Grant
    Filed: July 28, 2010
    Date of Patent: April 8, 2014
    Assignee: Au Optronics Corporation
    Inventors: Tien-Lun Ting, Yu-Ching Wu, Yi-Cheng Li, Wen-Hao Hsu, Jenn-Jia Su
  • Patent number: 8692753
    Abstract: To provide a liquid crystal display device capable of improving a moving picture characteristic at a low cost by achieving high luminance of the liquid crystal display device which performs quasi-impulse drive. In the liquid crystal display device of the present invention, a first switching device constituting each pixel has a control terminal connected to a gate line, another control terminal connected to another gate line, and becomes electrically conductive when one of the control terminals is low level while the other is high level. A second switching device has a control terminal connected to the gate line and a control terminal connected to the other gate line. A pixel capacitance and a storage capacitance are connected to data lines via the first switching device, and connected to a black signal supplying wiring via the second switching device. The black signal supplying wiring is common to all the pixels.
    Type: Grant
    Filed: June 12, 2009
    Date of Patent: April 8, 2014
    Assignee: NLT Technologies, Ltd.
    Inventor: Hiroyuki Sekine
  • Patent number: 8665405
    Abstract: A thin film transistor array panel includes an insulating substrate, a plurality of pixel electrodes arranged on the insulating substrate in rows and columns, a plurality of thin film transistors connected with the plurality of pixel electrodes, respectively, and a plurality of gate lines and a plurality of data lines connected with the plurality of thin film transistors. When one data line and one pixel electrode which are connected with a single thin film transistor are referred to as a connected data line and a connected pixel electrode, respectively, the plurality of thin film transistors are positioned on a same side of the connected data line in two adjacent rows, and on alternating sides of the connected data line in every other two adjacent rows. Two boundary lines of the connected pixel electrode are overlapped with the connected data line.
    Type: Grant
    Filed: March 28, 2011
    Date of Patent: March 4, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Yeo-Geon Yoon, Hyoung-Wook Lee, Mi-Ae Lee, Ho-Jun Lee
  • Patent number: 8665387
    Abstract: A liquid crystal display includes: first and second substrates; a liquid crystal layer; first and second gate lines; a data line and a voltage supplying line disposed on the first substrate; and a pixel. The pixel includes a first switching element connected to the first gate line and the data line, a second switching element connected to the first gate line and the voltage supplying line, a third switching element connected to the second gate line, a first pixel electrode connected to the first switching element, and a separate second pixel electrode connected to the second switching element. The voltage supplying line is supplied with a first voltage, which has a substantially uniform magnitude.
    Type: Grant
    Filed: October 13, 2010
    Date of Patent: March 4, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Seon-Ah Cho, Hee-Wook Do
  • Patent number: 8648985
    Abstract: The present invention relates to a liquid crystal display. The liquid crystal display has a lower panel including a first pixel area having a first pixel electrode and a first light leakage preventing member, a final pixel area having a second pixel electrode and a second light leakage preventing member, and middle pixel areas disposed between the first pixel area and the final pixel area, each of the middle pixel areas including a first middle pixel electrode and a second middle pixel electrode. Accordingly, light leakage may be effectively prevented at the first pixel area and the final pixel area that are disposed on the edge.
    Type: Grant
    Filed: November 4, 2009
    Date of Patent: February 11, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Yong-Hwan Kim, Jang-Soo Kim, Hong-Suk Yoo, Seung-Soo Baek, Hwa-Yeul Oh, Jae-Ho Choi, Jong-In Kim, Sang-Hee Jang
  • Patent number: 8643802
    Abstract: A pixel array including a plurality of scan lines, data lines, and sub-pixels is provided. Each of the sub-pixels arranged in the nth row includes a first switch, a first pixel electrode, a second switch, a third switch, and a second pixel electrode. The first switch and the second switch are electrically connected to the nth scan line and the mth data line. The first switch and the first pixel electrode are electrically connected. The second switch has a first signal output terminal. The third switch is electrically connected to the (n+i)th scan line. The third switch has a signal input terminal electrically connected to the first signal output terminal and a second signal output terminal. The first signal output terminal is electrically insulated from the first pixel electrode and the second pixel electrode. The first signal output terminal extends to the underneath of the second pixel electrode.
    Type: Grant
    Filed: November 26, 2010
    Date of Patent: February 4, 2014
    Assignee: Au Optronics Corporation
    Inventors: Tien-Lun Ting, Yu-Ching Wu, Wen-Hao Hsu, Yi-Cheng Li
  • Patent number: 8643816
    Abstract: Provided is a liquid crystal display (LCD), the LCD includes: an insulating substrate; a first gate line and a second gate line which are formed on the insulating substrate and extend parallel to each other; a data line formed on the insulating substrate, insulated from the first and second gate lines, and crosses the first and second gate lines; a first subpixel electrode connected to the first gate line and the data line by a first switching device and includes a plurality of first fine protruding patterns at an edge thereof; and a second subpixel electrode connected to the second gate line and the data line by a second switching device and includes a plurality of second fine protruding patterns at an edge thereof, wherein the first fine protruding patterns are separated from each other by a first gap, and the second fine protruding patterns are separated from each other by a second gap, wherein the sum of a width of the first gap and a width of each of the first fine protruding patterns is greater than the
    Type: Grant
    Filed: January 30, 2009
    Date of Patent: February 4, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Dong-Gyu Kim, Sahng-Ik Jun, Seung-Soo Baek, Kee-Bum Park
  • Patent number: 8629950
    Abstract: An array substrate includes a base substrate, a gate line, a data line, a switching element and a pixel electrode. The gate line extends in a first direction on the base substrate. The data line extends in a second direction, substantially perpendicular to the first direction, on the base substrate. The switching element is electrically connected to the gate line and the data line. The pixel electrode includes a first sub-pixel electrode having first slit patterns formed thereon, and a second sub-pixel adjacent to the first sub-pixel electrode and having second slit patterns formed thereon. The first slit patterns and the second slit patterns are electrically connected to the switching element, the first slit patterns are disposed in parallel with each other in a third direction, and the second slit patterns are disposed in parallel with each other in a fourth direction different than third direction.
    Type: Grant
    Filed: May 5, 2009
    Date of Patent: January 14, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Dong-Gyu Kim, Sang-Soo Kim
  • Patent number: 8625059
    Abstract: In a screen configuration in which pixels are in a delta arrangement, video signal lines are formed on every other pixel, and two scanning lines in one set are disposed, transmittance of the screen is improved. Pixels corresponding to a red pixel (R), a green pixel (G), and a blue pixel (B) are disposed in a delta arrangement in a TFT substrate. A red color filter, a green color filter, a blue color filter are formed, in a counter substrate, corresponding to the red pixel (R), the green pixel (G), and the blue pixel (B) of the TFT substrate. A black matrix is formed to a portion where the color filter is not present. Two blue color filters are formed continuously adjacent each other in the first direction, and a black matrix is not formed between the blue color filters adjacent each other.
    Type: Grant
    Filed: April 26, 2012
    Date of Patent: January 7, 2014
    Assignee: Hitachi Displays, Ltd.
    Inventor: Takahiro Nagami
  • Patent number: 8625061
    Abstract: A display substrate includes a base substrate, a reflective layer, a common electrode and a pixel electrode. The base substrate includes a pixel area having a transmissive area and a reflective area. The reflective layer is disposed in the reflective area of the base substrate. The common electrode includes a first sub-common electrode formed in the reflective area and a second sub-common electrode formed in the transmissive area. The pixel electrode includes a first sub-pixel electrode spaced apart from the first sub-common electrode by a first distance in the reflective area, and a second sub-pixel electrode spaced apart from the second sub-common electrode by a second distance less than the first distance in the transmissive area.
    Type: Grant
    Filed: November 5, 2009
    Date of Patent: January 7, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Keun-Chan Oh, Joo-Seok Yeom, Youn-Hak Jeong, Hee-Hwan Lee, Jae-Jin Lyu
  • Patent number: 8619208
    Abstract: In the case of forming switching elements and light sensor elements over the same substrate, an increase in the film thickness of active layers in an attempt to enhance the sensitivity of the light sensor elements would adversely affect the characteristics of the switching elements (TFTs). In a configuration of a display in which a channel layer 25 for constituting thin film transistors to form the switching elements for pixels and a photoelectric conversion layer 35 for constituting the light sensor elements are provided over a gate insulating film 24 on a glass substrate 5 to be provided with a plurality of pixels arranged in a matrix pattern, the photoelectric conversion layer 35 is formed to be thicker than the channel layer 25, and/or the photoelectric conversion layer 35 is formed of a material different from the material for the channel layer 25, whereby the light absorption coefficient of the photoelectric conversion layer 35 is made to be higher than that of the channel layer 25.
    Type: Grant
    Filed: September 18, 2008
    Date of Patent: December 31, 2013
    Assignee: Japan Display West Inc.
    Inventors: Dharam Pal Gosain, Tsutomu Tanaka, Makoto Takatoku
  • Patent number: 8614773
    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: Grant
    Filed: March 2, 2012
    Date of Patent: December 24, 2013
    Assignees: Japan Display Inc., Panasonic Liquid Crystal Display Co., Ltd.
    Inventor: Kikuo Ono
  • Patent number: 8610867
    Abstract: Provided are a liquid crystal composition and a liquid crystal display (LCD) including the liquid crystal composition. The LCD includes a first display panel a second display panel facing the first display panel, and a liquid crystal composition disposed between the first display panel and the second display panel. If a dielectric constant in a direction parallel to a long axis of liquid crystals is defined as a horizontal dielectric constant ??, a dielectric constant in a direction perpendicular to the long axis of the liquid crystals is defined as a vertical dielectric constant ??, and the difference between the vertical dielectric constant ?? and the horizontal dielectric constant ?? is defined as dielectric anisotropy ??, then a ratio ??/?? of the dielectric anisotropy ?? to the vertical dielectric constant ?? of the liquid crystal composition is 0.5 or less.
    Type: Grant
    Filed: January 20, 2009
    Date of Patent: December 17, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventors: Dong-Gyu Kim, Kyoung-Ju Shin, Jong-Ho Son, Yong-Kuk Yun, Jun-Pyo Lee, Seunng-Soo Baek
  • Patent number: 8605242
    Abstract: A liquid crystal display includes a signal line disposed on a substrate, a pixel electrode connected to the signal line and including a first subpixel electrode and a second subpixel electrode, a common electrode disposed opposite the pixel electrode, and a liquid crystal layer disposed between the pixel electrode and the common electrode. The liquid crystal layer is divided into domains including a first direction domain and a second direction domain in a region corresponding to the first subpixel electrode, and a third direction domain and a fourth direction domain in a region corresponding to the second subpixel electrode, and an area of the third direction domain is greater than about twice and less than about then times an area of the fourth direction domain.
    Type: Grant
    Filed: October 12, 2010
    Date of Patent: December 10, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventors: Seon-Ah Cho, Jang-Kun Song, Hyun-Wuk Kim
  • Patent number: 8605067
    Abstract: A source-driving circuit comprises a plurality of first and second data-outputting units, a first and a second charge-sharing units and a charge-sharing switch circuit. The first and second data-outputting units have corresponding first and second output terminals respectively for outputting data signals with a first polarity and a second polarity. The first and second charge-sharing units comprise a plurality of first and second switches respectively. Each first switch is electrically connected between each two first output terminals and each two second output terminals. Each second switch is electrically connected between one of the first outputting terminals and a corresponding one of the second outputting terminals. A charge-sharing switch circuit is electrically connected to the first and second charge-sharing units for outputting a switch signal to the first and second charge-sharing units according to a polarity signal, so as to determine the on/off statuses of the first and second switches.
    Type: Grant
    Filed: December 1, 2011
    Date of Patent: December 10, 2013
    Assignee: Au Optronics Corp.
    Inventors: Jen-Chieh Chen, Chao-Ching Hsu, Ching-Lin Li
  • Patent number: 8593583
    Abstract: The present invention relates to a liquid crystal display including: a first substrate, a gate line formed disposed on the first substrate, a first data line and a second data lines formed both of which are disposed on the first substrate, and insulated from and intersection disposed substantially perpendicular to the gate line, 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 first pixel electrode connected to the first thin film transistor, a second pixel electrode connected to the second thin film transistor, a second substrate facing disposed substantially opposite to the first substrate, a common electrode formed disposed on the second substrate, and a liquid crystal layer disposed between the first substrate and the second substrate, and including biaxial liquid crystal.
    Type: Grant
    Filed: March 24, 2009
    Date of Patent: November 26, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventors: Seung-Hoon Lee, Joo-Seok Yeom, Hee-Seop Kim, Sung-Woon Kim, Jiangang Lu