Transistor Patents (Class 349/42)
  • Patent number: 8384835
    Abstract: A display device includes liquid crystal capacitor element interposed between a pixel electrode and a counter electrode. The pixel electrode, one terminals of a first switch circuit and a second switch circuit, and a first terminal of a second transistor form an internal node. The other terminals of the first switch circuit is connected to the source line. The other terminal of the second switch circuit is connected to the voltage supply line and is configured by a series circuit of transistors. A control terminal of the transistor, a second terminal of the transistor, and one terminal of a boost capacitor element form an output node. The other terminal of the boost capacitor element, the control terminal of the transistor, and the control terminal of the transistor are connected to a boost line, a reference line, and a selecting line, respectively.
    Type: Grant
    Filed: May 24, 2010
    Date of Patent: February 26, 2013
    Assignee: Sharp Kabushiki Kaisha
    Inventor: Yoshimitsu Yamauchi
  • Patent number: 8384637
    Abstract: A charge sharing style wide viewing liquid crystal display to which fast driving pre-charging technology may be applied to is disclosed. A charge sharing style wide viewing liquid crystal display is provided such that charge sharing is carried out between a liquid crystal capacitor and a charge sharing capacitor that correspond to the nth gate line when the mth (m?n+2) gate line is turned on.
    Type: Grant
    Filed: December 5, 2008
    Date of Patent: February 26, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventor: Dong-Gyu Kim
  • Patent number: 8379183
    Abstract: An embodiment of the present invention discloses a Liquid Crystal on Silicon (LCOS) display unit, in which a Metal-Insulator-Metal (MIM) capacitor consisting of a micromirror layer, a insulation layer and a light shielding layer is formed by grounding the light shielding layer on a pixel switch circuit layer. Therefore the pixel switch circuit and the capacitor are in vertical distribution, that is, the switch circuit and the capacitor both have an allowable design area of the size of one pixel. Another embodiment of the present invention provides a method for forming a Liquid Crystal on Silicon (LCOS) display unit.
    Type: Grant
    Filed: June 8, 2011
    Date of Patent: February 19, 2013
    Assignee: Semiconductor Manufacturing International (Shanghai) Corporation
    Inventors: Herb He Huang, Xianyong Pu, Jianhong Mao, Yiqun Chen, Jing Fu, Zhongshan Hong, Yanghui Xiang
  • Publication number: 20130038805
    Abstract: A liquid-crystal-driving circuit includes: resistors connected in series between first and second potentials lower than the first potential; one or more voltage follower circuits to impedance-convert one or more intermediate potentials between the first and second potentials, to be outputted, respectively, the intermediate potentials generated at one or more connection points between the resistors, respectively; a common-signal-output circuit to supply common signals to common electrodes of a liquid crystal panel, respectively, the common signals being at the first, second, or one or more intermediate potentials in a predetermined order; and a segment-signal output circuit supplies segment signals to segment electrodes of the liquid crystal panel, respectively, the segment signals being at the first and second potentials, or the intermediate potentials according to the common signals, wherein the segment-signal output circuit increases impedances of the segment signals only for a first period when the of segm
    Type: Application
    Filed: August 13, 2012
    Publication date: February 14, 2013
    Applicant: SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC
    Inventors: Norikazu Katagiri, Tetsuya Tokunaga, Tomoshi Yoshida, Kensuke Goto, Mamoru Yamaguchi
  • Patent number: 8373812
    Abstract: The present invention relates a liquid crystal display device which can minimize resistance of a common line. The liquid crystal display device includes a plurality of data lines and a plurality of common lines arranged alternately, a plurality of gate lines arranged to cross the data lines and the common lines, a pixel electrode formed at every pixel region defined as a region is surrounded by the data line, the common line and the gate line, and at least one auxiliary electrode unit overlapped with a portion of each of the pixel electrodes adjacent to the common line, wherein the auxiliary electrode unit is connected to the common electrode line electrically.
    Type: Grant
    Filed: October 30, 2009
    Date of Patent: February 12, 2013
    Assignee: LG Display Co., Ltd.
    Inventors: Hae Yeol Kim, Tae Woong Moon
  • Patent number: 8373811
    Abstract: A liquid crystal display (LCD) device essentially includes a plurality of data lines, a plurality of gate lines and a plurality of pixel units. Each pixel unit includes a first liquid-crystal capacitor, a second liquid-crystal capacitor, a first switch and a second switch. The first liquid-crystal capacitor of a pixel unit is charged via the first switch of the same pixel unit. The second liquid-crystal capacitor of a pixel unit is charged via the second switch of the same pixel unit and the first switch of a different pixel unit. The sub-pixel voltages corresponding to the first and second liquid-crystal capacitors of the same pixel unit have the same polarity. Furthermore, disclosed is a liquid-crystal display driving method for writing two data signals having same polarity respectively into the first and second liquid-crystal capacitors of a pixel unit via the same date line during two intervals partly overlapped.
    Type: Grant
    Filed: June 26, 2008
    Date of Patent: February 12, 2013
    Assignee: AU Optronics Corp.
    Inventors: Chih-Yuan Chien, Pei-Yi Chen
  • Patent number: 8373831
    Abstract: According to one embodiment, a liquid crystal display device includes a first substrate, a second substrate, a liquid crystal layer, scanning lines, signal lines, pixel switches, first electrodes, a scanning line drive circuit, a second electrode, a voltage supply wiring, a control mechanism, a first switching mechanism, a second switching mechanism, and an output timing switching mechanism. The output timing switching mechanism is configured to simultaneously output a second scanning signal of switching the pixel switch into conductive state to the scanning lines, based on the control signal.
    Type: Grant
    Filed: February 17, 2012
    Date of Patent: February 12, 2013
    Assignee: Japan Display Central Inc.
    Inventors: Kenji Harada, Takamitsu Fujimoto, Takahiro Oonuma
  • Patent number: 8373814
    Abstract: An approach of a circuit configuration is provided for operating a display panel and a liquid crystal display with high aperture ratio, transmittance and visibility, the circuit configuration includes: a gate line; a data line intersecting the gate line; a first transistor connected to the gate line and the data line; a second transistor connected to the gate line and the data line; a storage electrode line separated from the gate line; a third transistor connected to the storage electrode line and the second transistor; a first pixel electrode connected to the first transistor; and a second pixel electrode connected to the second transistor and the third transistor. The third transistor being separated from an additional gate line is connected to the storage electrode line such that the aperture ratio can be increased, and visibility and transmittance can be enhanced.
    Type: Grant
    Filed: July 9, 2010
    Date of Patent: February 12, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventors: Kwang-Chul Jung, Young-Soo Yoon, Joon-Chul Goh, Chong-Chul Chai
  • Patent number: 8368845
    Abstract: An electronic device, such as personal computer, incorporating a liquid crystal panel which uses LEDs as an illuminating light source for a liquid crystal panel to reduce power consumption and size of the electronic device. When 3-color LED lamps 13R, 13G, 13B of the LED light source 12 are lit, red, green and blue rays emitted from respective LED lamps enter the scatterplate 11 where they are scattered and mixed to produce white light LW which goes out from the entire surface of the scatterplate 11 to illuminate the entire rear surface of the transmission type liquid crystal panel 10. The white light LW that has entered the liquid crystal panel 10 is modulated according to the alignment of the liquid crystal material and passes through the color filters of the counter substrate. The user can view the transmitted light LT from the liquid crystal panel 10 as a color image.
    Type: Grant
    Filed: October 10, 2008
    Date of Patent: February 5, 2013
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventor: Shunpei Yamazaki
  • Publication number: 20130027623
    Abstract: A metal line 731 is formed in a linear area S of an insulative substrate 720, and moreover a metal line 732 is formed generally parallel to the metal line 731 with a specified distance thereto. The metal line 731 is connected to an n-type semiconductor core 701 of bar-like structure light-emitting elements 710A to 710D, and the metal line 732 is connected to a p-type semiconductor layer 702. By dividing the insulative substrate 720 into a plurality of divisional substrates, a plurality of light-emitting devices in each of which a plurality of bar-like structure light-emitting elements 710 are placed on the divisional substrates are formed.
    Type: Application
    Filed: February 22, 2011
    Publication date: January 31, 2013
    Applicant: Sharp Kabushiki Kaisha
    Inventors: Tetsu Negishi, Akihide Shibata, Kenji Komiya, Fumiyoshi Yoshioka, Hiroshi Iwata, Akira Takahashi
  • Publication number: 20130027622
    Abstract: An object of the present invention is to provide a display device having a high contrast ratio by a simple and easy method. Another object of the present invention is to manufacture such a display device having a high contrast ratio at low cost. The present invention relates to a display device including a first substrate; a second substrate; a layer including a display element, wherein the layer including the display element is interposed between the first substrate and the second substrate; and stacked polarizers on the outer side of the first substrate or the second substrate. The stacked polarizers are arranged to be in a parallel Nicols state and the wavelength distributions of the extinction coefficients of the stacked polarizers are different from each other.
    Type: Application
    Filed: July 27, 2012
    Publication date: January 31, 2013
    Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
    Inventors: Tetsuji Ishitani, Takeshi Nishi, Yuji EGI
  • Patent number: 8357570
    Abstract: A method for fabricating a pixel structure includes providing a substrate having a pixel area. A first metal layer, a gate insulator and a semiconductor layer are formed on the substrate and patterned by using a first half-tone mask or a gray-tone mask to form a transistor pattern, a lower capacitance pattern and a lower circuit pattern. Next, a dielectric layer and an electrode layer both covering the three patterns are sequentially formed and patterned to expose a part of the lower circuit pattern, a part of the lower capacitance pattern and a source/drain region of the transistor pattern. A second metal layer formed on the electrode layer and the electrode layer are patterned by using a second half-tone mask or the gray-tone mask to form an upper circuit pattern, a source/drain pattern and an upper capacitance pattern. A portion of the electrode layer constructs a pixel electrode.
    Type: Grant
    Filed: March 21, 2011
    Date of Patent: January 22, 2013
    Assignee: Au Optronics Corporation
    Inventor: Yu-Cheng Chen
  • Publication number: 20130016296
    Abstract: The present invention includes: a reflective electrode (2); a translucent electrode (10); an organic EL layer (21) for emitting blue light, the organic EL layer being sandwiched between the reflective electrode and the translucent electrode; a red fluorescent substance layer (13) for converting the light from the organic EL layer (21) into red light; a green fluorescent substance layer (14) for converting the light from the organic EL layer (21) into green light; and a blue pixel including a light-distribution-characteristic adjusting layer (15) for adjusting a light distribution characteristic of the light from the organic EL layer (21), the present invention being structured such that the reflective electrode (2) and the translucent electrode (10) produce a microcavity effect.
    Type: Application
    Filed: January 27, 2011
    Publication date: January 17, 2013
    Inventors: Yoshimasa Fujita, Hidenori Ogata, Ken Okamoto, Yuhki Kobayashi, Makoto Yamada, Katsumi Kondoh
  • Patent number: 8355087
    Abstract: A pixel array substrate includes a substrate having a display region and a non-display region, a pixel array in the display region, first and second lead lines, first pads in the non-display region, second pads in the non-display region and on a first insulating layer, and the first insulating layer. The first lead lines electrically connect the pixel array and extend from the display region to the non-display region. Each first pad electrically connects one corresponding first lead line. The first insulating layer covers the first lead lines and exposes the first pads. The second lead lines on the first insulating layer electrically connect the pixel array and extend from the display region to the non-display region. Each second pad electrically connects one corresponding second lead line. A distance between each first pad and the adjacent second pad along a horizontal direction is 10 um˜20 um.
    Type: Grant
    Filed: December 1, 2010
    Date of Patent: January 15, 2013
    Assignee: Au Optronics Corporation
    Inventors: Tsai-Chi Yeh, Chih-Chun Chen, Wen-Hui Peng, Ting-Shiun Huang, Sheng-Yun Hsu
  • Patent number: 8350792
    Abstract: A display device in which a non-display region is formed in a portion of a display region which is formed of a mass of the pixels, out of the plurality of gate signal lines and the plurality of drain signal lines, the gate signal lines and the drain signal lines which are arranged so as to traverse the non-display region when the gate signal lines and the drain signal lines straightly extend imaginarily are formed in a pattern where the gate signal lines and the drain signal lines are routed around the non-display region.
    Type: Grant
    Filed: July 27, 2009
    Date of Patent: January 8, 2013
    Assignees: Hitachi Displays, Ltd., Panasonic Liquid Crystal Display Co., Ltd.
    Inventors: Koichi Igeta, Osamu Nagashima
  • Patent number: 8350268
    Abstract: A thin film transistor substrate including a thin film transistor having a drain electrode with an electrode portion, which overlaps with a semiconductor layer, and an extended portion, which extends from the electrode portion and has a portion overlapping with a storage electrode or storage electrode line. A passivation layer is arranged on the drain electrode, and it has a contact hole that partially exposes the extended portion of the drain electrode without exposing a step in the extended portion caused by the storage electrode or storage electrode line. A pixel electrode is arranged on the passivation layer and is electrically connected with the extended portion of the drain electrode through the contact hole.
    Type: Grant
    Filed: March 8, 2011
    Date of Patent: January 8, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventors: Hyuk-Jin Kim, Kyung-wook Kim
  • Patent number: 8345177
    Abstract: A liquid crystal display (LCD) is provided having transistors disposed within via holes having elongated (e.g., rectangular or oval) contact areas. The use of via holes having elongated contact areas allows an opaque mask defining an aperture for light transmission to be lengthened, thereby increasing the overall area of the aperture. The increase in the area of the aperture may increase the amount of light that can pass through the aperture.
    Type: Grant
    Filed: February 13, 2009
    Date of Patent: January 1, 2013
    Inventors: Shih Chang Chang, Shawn Robert Gettemy, Ming Xu, Cheng Chen, Mingxia Gu, John Z Zhong
  • Publication number: 20120327321
    Abstract: Disclosed embodiments relate to a thin-film transistor (TFT) for use in a display device. The display device may include a liquid crystal display (LCD) panel having multiple pixels arranged in rows and column, with each row corresponding to a gate line and each column corresponding to a source line. Each of the pixels includes a pixel electrode and a TFT. The TFT may include a metal oxide semiconductor channel between a source and drain. For each TFT, holes may be formed in the gate line in a region beneath the source and/or the drain. The holes may be formed such that the source and drain only partially overlap the holes. The presence of the holes reduces the area of the gate line, which may reduce parasitic capacitance and improve loading. This may provide improved panel performance, which may reduce the appearance of certain visual artifacts.
    Type: Application
    Filed: September 23, 2011
    Publication date: December 27, 2012
    Applicant: APPL INC.
    Inventors: Chun-Yao Huang, Young Bae Park, Shih Chang Chang
  • 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
  • Publication number: 20120320290
    Abstract: A display device that can easily attach a connection member to a display panel is provided. This liquid crystal display device (1) includes: a liquid crystal display panel (2) that includes a TFT substrate (10) and a CF substrate (20); a FPC (30) that is electrically connected to the TFT substrate; and a FPC (40) that is electrically connected to the CF substrate. An alignment mark (13) is provided in the TFT substrate. An alignment mark (41) corresponding to the alignment mark (13) is provided in the FPC (40).
    Type: Application
    Filed: October 27, 2010
    Publication date: December 20, 2012
    Applicant: Sharp Kabushiki Kaisha
    Inventors: Yasuhiro Hida, Gen Nagaoka, Hiroki Miyazaki
  • Patent number: 8334964
    Abstract: A laminated spacer portion formed by laminating various thin films that constitute thin-film transistors is disposed in peripheral driver circuits. As a result, even in a structure in which part of a sealing member is disposed above the peripheral driver circuits, pressure exerted from spacers in the sealing member is concentrated on the laminated spacer portion, whereby destruction of a thin-film transistor of the peripheral driver circuits can be prevented caused by the pressure from the sealing portion.
    Type: Grant
    Filed: July 26, 2011
    Date of Patent: December 18, 2012
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Hongyong Zhang, Satoshi Teramoto
  • Patent number: 8334955
    Abstract: Apparatus, methods, systems and devices for high aperture ratio, high transmittance, and wide viewing angle liquid crystal display having first and second substrates each with an alignment layer and polarizer on the interior and exterior surface thereof and a liquid crystal material therebetween forming plural pixels each having a common electrode group and a pixel electrode group each having at least one common and pixel electrode. A fringe field drives the molecules in the regions above and below the electrodes and a horizontal field drives the molecules between the electrode groups to achieve high transmittance. In an embodiment an insulating layer separates the substrate and alignment layer and the pixel electrodes are on the substrate and the common electrodes are on the insulating layer. In another embodiment a compensation film is layered between one of the substrates and corresponding polarizer.
    Type: Grant
    Filed: April 30, 2010
    Date of Patent: December 18, 2012
    Assignees: University of Central Florida Research Foundation, Inc., Toppoly Optoelectronics Corp.
    Inventors: Zhibing Ge, Xinyu Zhu, Shin-Tson Wu, Thomas Xinzhang Wu
  • Publication number: 20120314148
    Abstract: A display device includes: a pixel section provided between a pair of substrates and including plural pixels; one or plural active components disposed in a frame region around the pixel section on one substrate of the pair of substrates; an insulating film provided in the frame region on the one substrate to cover the one or plural active components; and a sealing layer provided to seal the pixel section and cover an end edge portion of the insulating film in the frame region.
    Type: Application
    Filed: May 31, 2012
    Publication date: December 13, 2012
    Applicant: SONY CORPORATION
    Inventors: Jun Yamaguchi, Morikazu Nomura, Takashi Fujimura
  • Patent number: 8325285
    Abstract: A method of manufacturing, with high mass productivity, liquid crystal display devices having highly reliable thin film transistors with excellent electric characteristics is provided. In a liquid crystal display device having an inverted staggered thin film transistor, the inverted staggered thin film transistor is formed as follows: a gate insulating film is formed over a gate electrode; a microcrystalline semiconductor film which functions as a channel formation region is formed over the gate insulating film; a buffer layer is formed over the microcrystalline semiconductor film; a pair of source and drain regions are formed over the buffer layer; and a pair of source and drain electrodes are formed in contact with the source and drain regions so as to expose a part of the source and drain regions.
    Type: Grant
    Filed: December 21, 2011
    Date of Patent: December 4, 2012
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Shunpei Yamazaki, Yukie Suzuki, Hideaki Kuwabara, Hajime Kimura
  • Publication number: 20120300147
    Abstract: A method of fabricating metal oxide TFTs on transparent substrates includes the steps of positioning an opaque gate metal area on the front surface of the substrate, depositing transparent gate dielectric and transparent metal oxide semiconductor layers overlying the gate metal and a surrounding area, depositing transparent passivation material on the semiconductor material, depositing photoresist on the passivation material, exposing and developing the photoresist to remove exposed portions, etching the passivation material to leave a passivation area defining a channel area, depositing transparent conductive material over the passivation area, depositing photoresist over the conductive material, exposing and developing the photoresist to remove unexposed portions, and etching the conductive material to leave source and drain areas on opposed sides of the channel area.
    Type: Application
    Filed: February 6, 2012
    Publication date: November 29, 2012
    Inventors: Chan-Long Shieh, Gang Yu
  • Patent number: 8318551
    Abstract: A gate electrode layer over a substrate; a gate insulating layer over the gate electrode layer; a first source electrode layer and a first drain electrode layer over the gate insulating layer; an oxide semiconductor layer over the gate insulating layer; and a second source electrode layer and a second drain electrode layer over the oxide semiconductor layer. A first part, a second part, and a third part of a bottom surface are in contact with the first source electrode layer, the first drain electrode layer, and the gate insulating layer respectively. A first part and a second part of the top surface are in contact with the second source electrode layer and the second drain electrode layer respectively. The first source electrode layer and the first drain electrode layer are electrically connected to the second source electrode layer and the second drain electrode layer respectively.
    Type: Grant
    Filed: November 30, 2009
    Date of Patent: November 27, 2012
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Kengo Akimoto, Toshinari Sasaki
  • Publication number: 20120293737
    Abstract: Embodiments of the disclosed technical solution provides a shift register unit circuit which operates based on two clock signals and comprises input terminals, a pre-charging circuit, a level pulling-down circuit, a outputting circuit and a scan signal output terminal. Embodiments of the disclosed technical solution also provides a shift register having at least two shift register unit circuits connected in cascade, and further provides a liquid crystal display array substrate and a liquid crystal display. The disclosed technical solution stabilizes the wave output from the scan signal output terminal and has small noise by means of a design of pulling down the level, and may realize the GOA circuit utilizing less TFTs circuits, so that the circuit structure is simple and power consumption is small.
    Type: Application
    Filed: May 16, 2012
    Publication date: November 22, 2012
    Applicants: CHENGDU BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Tianma LI, Xiaojing QI
  • Patent number: 8314899
    Abstract: In the array substrate where the display region has the non-quadrangle shape, a sub-capacitance line which forms a sub-capacitance is disposed at the pixel, a intersection region of the scanning lead-out line and a signal lead-out line is located at the frame region on the outside of the display region, a common lead-out line which connects the sub-capacitance line in common is disposed at the frame region side where the scanning lead-out line is disposed, the common lead-out line is not disposed in the intersection region, but disposed in a region between a region of the scanning lead-out line and a region of the signal lead-out line while intersecting any one of the scanning lead-out line and the signal lead-out line.
    Type: Grant
    Filed: September 22, 2011
    Date of Patent: November 20, 2012
    Assignee: Mitsubishi Electric Corporation
    Inventor: Manabu Tanahara
  • Patent number: 8314760
    Abstract: A liquid crystal display including a pair of substrates; a liquid crystal sealed between the substrates; alignment regulating structures formed on at least one of the substrates; and a plurality of pixel regions having both of a first area in which the alignment regulating structures are disposed at first intervals and which has a first threshold voltage for driving of the liquid crystal and a second area in which the alignment regulating structures are disposed at second intervals smaller than the first intervals and which has a second threshold voltage lower than the first threshold voltage. Each of the first intervals is a distance between adjacent alignment regulating structures along a direction parallel to one of the substrates in the first area and each of the second intervals is a distance between adjacent alignment regulating structures along a direction parallel to one of the substrates in the second area.
    Type: Grant
    Filed: June 30, 2010
    Date of Patent: November 20, 2012
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Takashi Sasabayashi, Arihiro Takeda, Kazuya Ueda, Yoshio Koike, Hideaki Tsuda
  • Patent number: 8310612
    Abstract: A thin film transistor (TFT) liquid crystal display panel and fabrication method are described. The panel has a data line and a gate line connected with a TFT and formed on the same layer. One of data or gate lines is discontinuous and the other is continuous in a pixel region such that the continuous line bisects the discontinuous line. A passivation film protects the TFT. Contact holes penetrate the passivation film and expose segments of the discontinuous line. A contact electrode connects the segments through the contact holes.
    Type: Grant
    Filed: December 14, 2005
    Date of Patent: November 13, 2012
    Assignee: LG Display Co., Ltd.
    Inventor: Bong Rae Cho
  • Patent number: 8310611
    Abstract: Provided is a display device including: a gate electrode (GT); a semiconductor film (S) which controls a current flowing between a source electrode (ST) and a drain electrode (DT), the semiconductor film including a channel region and two impurity regions formed of regions which sandwich the channel region; two Ohmic contact layers (DS) being interposed between the source electrode and the like and the two impurity regions; and an insulating film laminated on a partial region of the semiconductor film, the partial region being around a position corresponding to a substantial center of the semiconductor film, in which: the semiconductor film is formed of one of microcrystalline-silicon and polycrystalline-silicon; the two impurity regions are formed in regions on which the insulating film is absent; the two Ohmic contact layers cover the two impurity regions therewith; and the source electrode and the like cover the Ohmic contact layers therewith.
    Type: Grant
    Filed: August 5, 2009
    Date of Patent: November 13, 2012
    Assignees: Hitachi Displays, Ltd., Panasonic Liquid Crystal Display Co., Ltd.
    Inventors: Takuo Kaitoh, Toshio Miyazawa, Takeshi Sakai
  • Patent number: 8305509
    Abstract: A liquid crystal display device with improved productivity and a manufacturing method of the same. A liquid crystal display device according to the invention comprises in a region in which a scan line and a data line intersect with each other a first substrate comprising a first thin film transistor using either an amorphous semiconductor or an organic semiconductor for a channel portion, a second substrate, a liquid crystal layer interposed between the first substrate and the second substrate, and a third substrate comprising a second thin film transistor using a crystalline semiconductor for a channel portion.
    Type: Grant
    Filed: October 20, 2010
    Date of Patent: November 6, 2012
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Shunpei Yamazaki, Jun Koyama, Yasuyuki Arai, Yasuko Watanabe
  • Patent number: 8305508
    Abstract: A pixel structure includes a first patterned metal layer, a gate insulating layer, a semiconductor channel layer, a second patterned metal layer, a passivation layer, and a conducting layer. A gate line of the second patterned metal layer is electrically connected by the conducting layer to a gate extension electrode of the first patterned metal layer. A source electrode of the second patterned metal layer is electrically connected by the conducting layer to a second data line segment of the first patterned metal layer. A method for fabricating a pixel structure is also disclosed herein.
    Type: Grant
    Filed: July 23, 2009
    Date of Patent: November 6, 2012
    Assignee: AU Optronics Corporation
    Inventor: Hsiang-Lin Lin
  • Patent number: 8304776
    Abstract: The present invention relates to a thin film transistor substrate and method for fabricating the same which can secure an alignment margin and reduce the number of mask steps. A thin transistor substrate according to the present invention includes a gate line and a data line crossing each other to define a pixel, a gate metal pattern under the data line, a thin film transistor having a gate electrode, a source electrode and a drain electrode in the pixel, and a pixel electrode connected to the drain electrode of the thin film transistor by a connection electrode, wherein the data line has a plurality of first slits to disconnect the gate metal pattern from the gate line.
    Type: Grant
    Filed: September 8, 2010
    Date of Patent: November 6, 2012
    Assignee: LG Display Co., Ltd.
    Inventor: Seung Hee Nam
  • Publication number: 20120268679
    Abstract: A liquid crystal display panel capable of reducing a capacitance of a parasitic capacitor between a data line and a pixel electrode. The liquid crystal display panel comprises: a thin film transistor at a crossing of a gate line and a data line, liquid crystal cells including a pixel electrode connected to the thin film transistor; first shield patterns in the liquid crystal cells, each shield pattern being parallel to the data line without overlapping the data line, wherein the shield patterns are insulated from and overlap with an outer portion of the pixel electrode; and a common line arrayed to connect the shield patterns for each the liquid crystal cell.
    Type: Application
    Filed: July 2, 2012
    Publication date: October 25, 2012
    Inventors: Hong Sung SONG, Sai Chang Yun, Sang Chang Yun, Jae Woo Lee
  • Publication number: 20120268678
    Abstract: An object of the present invention is to enhance transmissivity and the luminance of a screen in an IPS liquid crystal display device. To achieve the object, in the IPS liquid crystal display device according to the present invention, a counter electrode is formed flatly and solidly on an organic passivation film, a pixel electrode having a slit is formed on the counter electrode via an interlayer insulation film, and an alignment film the orientation of which is controlled by optical orientation is formed on the pixel electrode. The transmissivity is enhanced by also making the inside of the contact hole function as a transmissible area for image formation by applying optical orientation to the alignment film in the contact hole to result in enhancement of the luminance of the screen.
    Type: Application
    Filed: April 10, 2012
    Publication date: October 25, 2012
    Inventors: Yasushi TOMIOKA, Noboru KUNIMATSU, Takeshi SATO, Masaki MATSUMORI
  • Patent number: 8294856
    Abstract: A display substrate includes a base substrate, a gate line, a first insulation layer, a semiconductor layer, a data line, a switching element, a light-blocking member, a reflective electrode, a second insulation layer and a transmissive electrode. The switching element is defined by a gate electrode, a source electrode and a drain electrode spaced apart from a source electrode. The light-blocking member includes a first light-blocking part disposed in correspondence with an area where the gate line and the data line are disposed, and a second light-blocking part is disposed in a reflective area to include an embossing pattern. The reflective electrode is disposed on the second light-blocking part. The second insulation layer is disposed in a pixel area of the reflective electrode. The transmissive electrode is disposed on the second insulation layer in correspondence with a transmissive area of the pixel area.
    Type: Grant
    Filed: July 2, 2009
    Date of Patent: October 23, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Seon-Ah Cho, Hee-Wook Do
  • Patent number: 8293590
    Abstract: An active matrix substrate 40 according to the present invention includes a conductive film 44 and a wiring 80 for supplying a signal to the conductive film 44, characterized in that the wiring 80 includes a first conductive layer 61 and a second conductive layer 62 having a relatively large line width in comparison with the first conductive layer 61 and laminated so as to cover the first conductive layer 61, and the conductive film 44 is arranged in a matrix pattern, and at least a portion of the conductive film 44 is disposed overlapping the wiring 80.
    Type: Grant
    Filed: May 23, 2008
    Date of Patent: October 23, 2012
    Assignee: Sharp Kabushiki Kaisha
    Inventor: Hideaki Sunohara
  • Publication number: 20120257132
    Abstract: A TFT substrate includes a pixel region which is a rectangular region where a plurality of pixels are formed in a matrix, a frame region which is outside the pixel region and frames the pixel region, a light blocking metal wire which is formed so as to surround the outside of at least three sides of the rectangular pixel region and has slits, a disconnection detection metal wire for detecting disconnection thereof formed outside the light blocking metal wire, two terminals are connected to the disconnection detection metal wire, and common electrodes which are connected to the light blocking metal wire and are maintained at the same potential as a common potential in the pixel circuit.
    Type: Application
    Filed: April 2, 2012
    Publication date: October 11, 2012
    Inventors: Kenji KITAJIMA, Ryouhei SUZUKI
  • Patent number: 8284337
    Abstract: A display apparatus includes a thin film transistor array panel including a display region and a non-display region, a gate line extending along a first direction, a data line extending along a second direction, substantially perpendicular to the first direction, the data line being insulated from and crossing the gate line, a storage electrode line which receives a common voltage signal, and a first gate driver disposed on the thin film transistor array panel and which supplies at least one of a gate on signal and a gate off signal to the gate line. The storage electrode line includes a first portion extending along the first direction and a second portion extending along the second direction in the non-display region. A width, measured along the second direction, of the first portion is less than a width, measured along the first direction, of the second portion.
    Type: Grant
    Filed: December 15, 2009
    Date of Patent: October 9, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Bong-Jun Lee, Kyung-Wook Kim
  • Publication number: 20120249913
    Abstract: A liquid crystal display device includes an alignment layer having an alignment direction inclined at an angle ? where 0°<?<90° with respect to an extending direction of a gate line, a pixel electrode, and a common electrode placed opposite to the pixel electrode with an insulating layer interposed therebetween. One of the pixel electrode and the common electrode has a slit for generating a fringe electric field to liquid crystals with the other of the pixel electrode and the common electrode. The slit includes a first slit lying in the alignment direction or a direction perpendicular to the alignment direction, and a plurality of second slits and a plurality of third slits respectively inclined at an angle ±? with respect to the first slit.
    Type: Application
    Filed: June 6, 2012
    Publication date: October 4, 2012
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Koji YONEMURA, Yasuhiro Morii
  • Publication number: 20120249912
    Abstract: Embodiments of the disclosed technology relate to a thin film transistor liquid crystal display (TFT-LCD) panel comprising: a color filter substrate and a thin film transistor array substrate facing each other, and a liquid crystal layer interposed therebetween; and an electrostatic discharge circuit, wherein the color filter substrate comprises: a base substrate and a color filter film which has a first surface attached to the base substrate; a conductive layer attached to a second surface of the color filter film and electrically connected to the electrostatic discharge circuit to release charges on the conductive layer. The embodiments of the disclosed technology also provide a color filter substrate.
    Type: Application
    Filed: March 29, 2012
    Publication date: October 4, 2012
    Applicants: CHENGDU BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Weiyun HUANG, Minghua XUAN, Youngyik KO
  • Publication number: 20120249911
    Abstract: A liquid crystal display device includes: a drive element substrate having plural interlayer insulating films laminated thereon, and having a non-opening area in which signal lines and a transistor are provided and an opening area in which none of the signal lines and the transistors is provided in the plural interlayer insulating films; and a counter substrate provided so as to face the drive element substrate through a liquid crystal, in which the drive element substrate includes: an insulating portion which is provided in the interlayer insulating film(s) between the non-opening area and the opening area, and whose refractive index is different from that of (each of) the interlayer insulating film(s); and a light blocking film provided between the insulating portion and the counter substrate.
    Type: Application
    Filed: March 22, 2012
    Publication date: October 4, 2012
    Applicant: Sony Corporation
    Inventors: Takashi Kamino, Moriyasu Nagura
  • Publication number: 20120249910
    Abstract: It is an object of the invention to provide a substrate for a liquid crystal display, a liquid crystal display having the same, and a method of manufacturing the same which make it possible to provide a display having high luminance and preferable display characteristics to be used in display sections of information apparatuses and the like. Each pixel is defined by gate bus lines extending in the horizontal direction and drain bus lines extending in the vertical direction. TFTs are formed in the vicinity of intersections between the bus lines, and resin overlap sections for shielding the TFTs from light are formed above the same. No black matrix is formed on a common electrode substrate which is provided in a face-to-face relationship with a TFT substrate, and the bus lines and the resin overlap sections formed on the TFT substrate function as a black matrix.
    Type: Application
    Filed: June 8, 2012
    Publication date: October 4, 2012
    Applicant: SHARP KABUSHIKI KAISHA
    Inventors: Manabu Sawasaki, Yuichi Inoue, Masakazu Shibasaki, Naoto Kondo, Tetsuya Fujikawa, Takashi Takagi, Tomonori Tanose, Tomoshige Oda, Akira Komorita, Katsunori Misaki, Shiro Hirota
  • Publication number: 20120242920
    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: Application
    Filed: March 23, 2012
    Publication date: September 27, 2012
    Applicant: BOE Technology Group Co., Ltd.
    Inventors: Yongxian XU, Changlin LENG
  • Patent number: 8274464
    Abstract: A plurality of source lines extending parallel to each other while alternately turning between a plurality of pixel electrodes provided in a delta arrangement, each have a plurality of first linear portions each extending along a side of the corresponding pixel electrode, a plurality of second linear portions each linked to the corresponding first linear portion and extending along a side of the corresponding pixel electrode to a middle portion of the side, and a plurality of protruding portions each extending from one end of the corresponding second linear portion along a side of the corresponding pixel electrode.
    Type: Grant
    Filed: September 8, 2008
    Date of Patent: September 25, 2012
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Isao Asako, Junichi Morinaga, Sunao Aoki, Kazunori Tanimoto
  • Publication number: 20120236223
    Abstract: A liquid crystal display having photo-sensing input mechanism includes a first gate line for transmitting a first gate signal, a second gate line for transmitting a second gate signal, a data line for transmitting a data signal, a pixel unit for outputting an image signal according to the first gate signal and the data signal, a readout line for transmitting a readout signal, a photo-sensing input unit and a driving adjustment unit. The photo-sensing input unit is utilized for generating a sensing voltage according to a driving voltage and an incident light signal, and is further utilized for outputting the readout signal according to the sensing voltage and the first gate signal. The driving adjustment unit is employed to provide the driving voltage according to the second gate signal and the incident light signal.
    Type: Application
    Filed: January 10, 2012
    Publication date: September 20, 2012
    Inventors: Pei-Yi Chen, Hsueh-Ying Huang, Jian-Shen Yu
  • Publication number: 20120229723
    Abstract: The present invention provides a liquid crystal display apparatus which allows high-speed driving with maintenance of a high viewing angle characteristic. The liquid crystal display apparatus includes, in one of pixels of a display driving circuit, a gate bus line; a data bus line; a storage capacitor bus line; a first transistor and a second transistor which are connected with the gate bus line and with the data bus line; a liquid crystal capacitor in a first subpixel; a liquid crystal capacitor in a second subpixel; and a third transistor connected with the liquid crystal capacitor in the second subpixel. The gate electrode of the third transistor is connected with a gate bus line (n+2) corresponding to pixels on a second or latter scanning line forward from a scanning signal line corresponding to the third transistors.
    Type: Application
    Filed: July 20, 2010
    Publication date: September 13, 2012
    Inventors: Shohei Katsuta, Tetsuya Ide, Seiji Ohhashi
  • Patent number: 8264656
    Abstract: A liquid crystal display (LCD) includes a first substrate including a display area displaying images and a peripheral area surrounding the display area, a common pad formed in the peripheral area of the first substrate, an insulating layer formed on the common pad and having a common contact hole exposing the common pad, an assistance common pad formed on the insulating layer of the peripheral area and contacting the common pad through the common contact hole, a second substrate corresponding to the first substrate, and a common electrode formed on the second substrate, and a conductive sealant disposed between the assistance common pad and the common electrode of the peripheral area, the conductive sealant electrically connecting the assistance common pad and the common electrode, wherein the common contact hole is disposed between the conductive sealant and the display area.
    Type: Grant
    Filed: July 22, 2009
    Date of Patent: September 11, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Sang-Kueon Lee, Kweon-Sam Hong, Hyun Park, Seung-Hwan Kim
  • Publication number: 20120224114
    Abstract: The present invention prevents the shaving of an alignment film caused by a columnar spacer in a liquid crystal display device of an IPS method using photo-alignment. A plinth higher than a pixel electrode is formed at a part where a columnar spacer formed over a counter substrate touches a TFT substrate. When an alignment film of a double-layered structure is applied over the pixel electrode and the plinth, the thickness of the alignment film over the plinth reduces by a leveling effect. When photo-alignment is applied in the state, a photodegraded upper alignment film over the plinth disappears and a lower alignment film having a high mechanical strength remains. As a result, it is possible to prevent the shaving of the alignment film.
    Type: Application
    Filed: February 28, 2012
    Publication date: September 6, 2012
    Inventors: Noboru Kunimatsu, Masaki Matsumori, Hidehiro Sonoda, Yasushi Tomioka, Toshiki Kaneko