Transistor Patents (Class 349/42)
  • Publication number: 20150002771
    Abstract: A back light unit includes a light guide plate having at least one light introducing portion and a light exit portion, the front surface of the light exit portion being a light exit surface, and a light source facing the light guide plate and emitting light in a light emitting direction. The at least one light introducing portion includes a first portion and a second portion which is connected to the light exit portion, and in which the second portion spreads wider than the first portion in plan view.
    Type: Application
    Filed: September 17, 2014
    Publication date: January 1, 2015
    Inventors: Hiroshi Nakamoto, Mitsuhiro Sugiyama, Masahiro Ito
  • Patent number: 8921850
    Abstract: A thin film transistor (TFT), a method for fabricating a TFT, an array substrate for a display device having a TFT, and a method for fabricating the same are provided. An oxide thin film transistor (TFT) includes: a gate electrode formed on a substrate; a gate insulating layer formed on the gate electrode; an active layer formed on the gate insulating layer above the gate electrode; an etch stop layer pattern formed on the active layer; a source alignment element and a drain alignment element formed on the etch stop layer pattern and spaced apart from one another; and a source electrode in contact with the source alignment element and the active layer and a drain electrode in contact with the drain alignment element and the active layer.
    Type: Grant
    Filed: December 27, 2012
    Date of Patent: December 30, 2014
    Assignee: LG Display Co., Ltd.
    Inventor: SangHee Yu
  • Patent number: 8921864
    Abstract: The present invention provides a TFT-LCD array substrate having a gate-line metal layer, a data-line metal layer crossing the gate-line metal layer and a plurality of layers covering a periphery of the gate-line metal layer and the data-line metal layer; the gate-line metal layer has first gate lines and second gate lines parallel and alternately arranged, the date-line metal layer has first data lines and second data lines parallel and alternately arranged; the first gate line and the second gate line are electrically connected; the first data line and the second data line are electrically connected. The present invention further provides a manufacturing method of the TFT-LCD array substrate. Implementing the TFT-LCD array substrate and the manufacturing method can reduce the occurrence of line-broken in the active array of TFT-LCD, increase the aperture ratio of the product and enhance yield rate of the products.
    Type: Grant
    Filed: November 9, 2011
    Date of Patent: December 30, 2014
    Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd.
    Inventors: Xiaolong Ma, Hungjui Chen, Tsunglung Chang
  • Patent number: 8922728
    Abstract: Disclosed is a liquid crystal display, which includes a plurality of data lines, a plurality of scan lines, and a plurality of pixels respectively disposed at positions where the scan lines and the data lines cross each other. Each of the pixels includes a main pixel and a sub-pixel. The main pixel includes a main thin film transistor. The sub-pixel includes a sub-thin film transistor. A channel width-to-length ratio of the main thin film transistor is different from a channel width-to-length ratio of the sub-thin film transistor. The liquid crystal display of the present invention implements the eight-domain division by adopting difference channel width-to-length ratios of the main pixel and the sub-pixel.
    Type: Grant
    Filed: December 2, 2011
    Date of Patent: December 30, 2014
    Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd.
    Inventor: Dong Li
  • Publication number: 20140375920
    Abstract: A display device includes a substrate, gate lines extended in a first direction on the substrate, data lines extended in a second direction substantially perpendicular to the first direction on the substrate, and pixels connected to the gate and data lines. Each pixel includes a transistor having one end connected to a data line, and a gate electrode connected to a corresponding gate line, a liquid crystal layer disposed in a tunnel-shaped cavity, first and second electrodes for applying an electric field to the liquid crystal layer. The first electrode of each pixel is connected to another end of the transistor, a second electrode of each pixel overlaps the first electrode of one of its adjacent pixels, and the first electrode of each pixel overlaps a second electrode of another one of its adjacent pixels.
    Type: Application
    Filed: December 16, 2013
    Publication date: December 25, 2014
    Applicant: Samsung Display Co., Ltd.
    Inventors: JOO-HAN BAE, SEONGGYU KWON, DONGHYUN YU, Hyung-Il JEON
  • Patent number: 8917365
    Abstract: A thin film transistor liquid crystal display (TFT-LCD) array substrate comprising a gate line and a data line formed on a base substrate. The gate line and the data line intersect with each other to define a pixel region, in which a pixel electrode and a thin film transistor (TFT) are formed, and a first insulating layer and a second insulating layer are interposed between the gate line and the data line, and the pixel electrode is disposed between the first insulating layer and the second insulating layer. A method of manufacturing a TFT-LCD is also disclosed.
    Type: Grant
    Filed: January 9, 2013
    Date of Patent: December 23, 2014
    Assignee: Beijing Boe Optoelectronics Technology Co., Ltd.
    Inventors: Xiang Liu, Seung Moo Rim, Xu Chen, Zhenyu Xie
  • Patent number: 8912983
    Abstract: An organic light emitting diode display includes a substrate including a display area and a non-display area, a display unit that is formed in the display area and includes a plurality of subpixels arranged in a matrix form, a main ground line that is positioned at a first side of the non-display area and is formed using the same material as source and drain electrodes included in each subpixel, and an auxiliary ground line that is formed to surround the non-display area, overlaps at least a portion of the main ground line at the first side of the non-display area, is electrically connected to the main ground line, and is formed using the same material as a lower electrode included in each subpixel.
    Type: Grant
    Filed: July 29, 2010
    Date of Patent: December 16, 2014
    Assignee: LG Display Co., Ltd.
    Inventor: Changnam Kim
  • Patent number: 8913220
    Abstract: An array substrate for a liquid crystal display (LCD) device include: a substrate; a gate line formed in one direction on one surface of the substrate; a data line crossing the gate line to define a pixel area; a thin film transistor (TFT) configured at a crossing of the gate line and the data line; a pixel electrode formed at a pixel region of the substrate; an insulating film formed on the entire surface of the substrate including the pixel electrode and the TFT, including a first insulating film formed of a high temperature silicon nitride film and a second insulating film formed of a low temperature silicon nitride film, and having a contact hole having an undercut shape exposing the pixel electrode; a pixel electrode connection pattern formed within the contact hole having an undercut shape and connected with the pixel electrode and the TFT; and a plurality of common electrodes separately formed on the insulating film.
    Type: Grant
    Filed: October 12, 2011
    Date of Patent: December 16, 2014
    Assignee: LG Display Co., Ltd.
    Inventors: Jeong-Oh Kim, Yong-Il Kim
  • Patent number: 8908115
    Abstract: An object of the invention is to provide a circuit technique which enables reduction in power consumption and high definition of a display device. A switch controlled by a start signal is provided to a gate electrode of a transistor, which is connected to a gate electrode of a bootstrap transistor. When the start signal is input, a potential is supplied to the gate electrode of the transistor through the switch, and the transistor is turned off. The transistor is turned off, so that leakage of a charge from the gate electrode of the bootstrap transistor can be prevented. Accordingly, time for storing a charge in the gate electrode of the bootstrap transistor can be shortened, and high-speed operation can be performed.
    Type: Grant
    Filed: August 23, 2013
    Date of Patent: December 9, 2014
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Atsushi Umezaki, Hiroyuki Miyake
  • Patent number: 8908116
    Abstract: A liquid crystal display device includes a first substrate and a second substrate with a liquid crystal layer therebetween. The first substrate includes drain lines, gate lines, thin-film transistors that output signals to pixel electrodes, and an organic film that is formed between each thin-film transistor and each pixel electrode. The organic film has a contact hole for electrical connection between a source electrode of each thin-film transistor and each pixel electrode. A step is formed in a layer underlying the organic film and an edge portion of the organic film toward the thin-film transistor, the edge portion forming the contact hole, being formed to lie on a lower plane of the step. A sidewall part of the contact hole which is formed in the organic film is formed to have a taper angle of at least 60 degrees.
    Type: Grant
    Filed: October 20, 2011
    Date of Patent: December 9, 2014
    Assignees: Japan Display Inc., Panasonic Liquid Crystal Display Co., Ltd.
    Inventors: Jun Fujiyoshi, Yasukazu Kimura, Hideo Tanabe, Masataka Okamoto, Hidekazu Miyake
  • Patent number: 8908114
    Abstract: An IPS liquid crystal display device with a reduced number of layers, in which the variation of pixel electrode potential due to ON/OFF operation of a gate voltage is suppressed. A pixel electrode is formed on a TFT substrate formed of glass. A gate insulating film is formed to cover the pixel electrode, an inorganic passivation film is formed on the gate insulating film, and a common electrode is formed on the passivation film. A liquid crystal molecule is driven with an electric line of force in a slit formed in the common electrode. A capacitive electrode, which is connected to the common electrode, is formed on the gate insulating film. The capacitive electrode forms an added capacitance with the pixel electrode via the gate insulating layer. The variation of pixel electrode potential due to ON/OFF operation of a gate voltage is suppressed with the added capacitance.
    Type: Grant
    Filed: October 3, 2011
    Date of Patent: December 9, 2014
    Assignee: Japan Display Inc.
    Inventor: Takahiro Nagami
  • Publication number: 20140353648
    Abstract: To provide is a p-type oxide, including an oxide, wherein the oxide includes: Cu; and an element M, which is selected from p-block elements, and which can be in an equilibrium state, as being present as an ion, wherein the equilibrium state is a state in which there are both a state where all of electrons of p-orbital of an outermost shell are lost, and a state where all of electrons of an outermost shell are lost, and wherein the p-type oxide is amorphous.
    Type: Application
    Filed: November 28, 2012
    Publication date: December 4, 2014
    Applicant: RICOH COMPANY, LTD.
    Inventors: Yukiko Abe, Naoyuki Ueda, Yuki Nakamura, Mikiko Takada, Shinji Matsumoto, Yuji Sone, Ryoichi Saotome
  • Publication number: 20140354909
    Abstract: A display panel includes a first substrate and a second substrate. The second substrate disposes opposite to the first substrate and has multiple data lines and multiple scan lines disposed as a matrix. The first substrate at least divides into a first region and a second region. The first region of the first substrate disposes correspondingly to the scan lines and/or data lines on the second substrate, and the second region of the first substrate is disposed correspondingly to a remaining region which is located outside the scan lines and/or data lines on the second substrate. The first region of the first substrate and the scan lines and/or data lines forms a non-capacitance or a low capacitance structure. Therefore, the present invention can reduce the capacitance generated by the scan lines and/or the data lines so as to reduce the signal delay.
    Type: Application
    Filed: June 27, 2013
    Publication date: December 4, 2014
    Applicant: Shenzhen China Star Optoelectronics Technology Co., Ltd.
    Inventor: Chengcai Dong
  • Publication number: 20140354910
    Abstract: A wire grid polarizer includes a substrate, a wire grid layer which is disposed on the substrate and includes a plurality of wire patterns arranged with a predetermined interval, where gaps are defined between the wire patterns, and a passivation layer which is disposed on the wire grid layer and includes first passivation particles which cover a top portion of the gaps.
    Type: Application
    Filed: May 29, 2014
    Publication date: December 4, 2014
    Applicants: Samsung Electronics Co., Ltd., Samsung Display Co., Ltd.
    Inventors: Joon-yong PARK, Sung-hoon LEE, Byung-hoon KIM, Jung-gun NAM, Dae-young LEE, Dae-hwan JANG, Gug-rae JO, Atsushi TAKAKUWA
  • Patent number: 8902146
    Abstract: An array substrate of an LCD having: a gate line formed along a first direction; a data line formed along a second direction crossing the first direction; first and second pixel electrodes spaced apart from each other; a thin-film transistor includes a gate electrode connected to the gate line; a source electrode connected to the data line and partially overlapping the second pixel electrode; and a drain electrode connected to the first pixel electrode spaced apart from the second pixel electrode along the second direction. The source electrode or the gate electrode overlaps the second pixel electrode but the drain electrode does not overlap the second pixel electrode. Electrical coupling between the first and second pixel electrodes are avoided with such configuration.
    Type: Grant
    Filed: July 17, 2013
    Date of Patent: December 2, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Beom-Jun Kim, Hee-Joon Kim, Hong-Woo Lee, Hye-Rhee Han, Hyeong-Jun Park, Jin-Suk Seo
  • Patent number: 8902189
    Abstract: A method of detecting touch positions includes; providing an external power voltage which drives a touch panel, sequentially turning on a plurality of lower driving elements connected to the touch panel, Turning on a plurality of upper driving elements connected to the touch panel to readout at least one multi-touched position corresponding to an x-coordinate, while each of lower driving elements is turned on, receiving readout position information corresponding to an x-coordinate, turning on at least one of the upper driving elements connected to the touch panel, turning on the plurality of lower driving elements connected to the touch panel to readout the at least one multi-touched position corresponding to a y-coordinate, while each of upper driving elements is turned on, receiving readout position information corresponding to the y-coordinate, turning on a sensing element, and turning off the sensing element.
    Type: Grant
    Filed: September 29, 2009
    Date of Patent: December 2, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Se-Ki Park, Sung-Kyu Lee, Yong-Woo Lee, Byung-Duk Yang, Dong-Min Yeo
  • Publication number: 20140347585
    Abstract: The present invention provides a liquid crystal display device in which even in the case of using a photo-alignment technique, excellent afterimage characteristics can be stably obtained. Provided is a liquid crystal display device including a TFT substrate having an alignment film, an opposed substrate which is arranged to face the TFT substrate and on which an alignment film is formed, and a liquid crystal layer sandwiched between the alignment films, wherein the alignment films are materials that can provide a liquid crystal alignment restraining force by irradiating polarized light, and the ratio of oxygen atoms on the surface of the alignment film is higher than that in the alignment film.
    Type: Application
    Filed: May 27, 2014
    Publication date: November 27, 2014
    Applicant: Japan Display Inc.
    Inventors: Yasuo IMANISHI, Yosuke HYODO, Chikae MATSUI, Hidehiro SONODA, Noboru KUNIMATSU
  • Patent number: 8896777
    Abstract: In an active matrix type liquid crystal display device, in which functional circuits such as a shift register circuit and a buffer circuit are incorporated on the same substrate, an optimal TFT structure is provided along with the aperture ratio of a pixel matrix circuit is increased. There is a structure in which an n-channel TFT, with a third impurity region which overlaps a gate electrode, is formed in a buffer circuit, etc., and an n-channel TFT, in which a fourth impurity region which does not overlap the gate electrode, is formed in a pixel matrix circuit. A storage capacitor formed in the pixel matrix circuit is formed by a light shielding film, a dielectric film formed on the light shielding film, and a pixel electrode. Al is especially used in the light shielding film, and the dielectric film is formed anodic oxidation process, using an Al oxide film.
    Type: Grant
    Filed: September 13, 2011
    Date of Patent: November 25, 2014
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Shunpei Yamazaki, Satoshi Murakami, Jun Koyama, Yukio Tanaka, Hidehito Kitakado
  • Patent number: 8896775
    Abstract: An electro-optical device includes a pixel electrode provided on a substrate, a transistor provided between the substrate and the pixel electrode, a first capacitor electrode provided between the pixel electrode and the transistor, and be electrically connected to the pixel electrode and the transistor, a second capacitor electrode provided between the pixel electrode and the first capacitor electrode, be located so as to be opposite the first capacitor electrode via a capacitor insulating film, and be supplied with a predetermined electric potential, and a light-shielding film provided between the pixel electrode and the second capacitor electrode, be located so as to be at least partially overlapped by the transistor, and be electrically connected to the second capacitor electrode via a contact hole formed in an insulating film disposed between the second capacitor electrode and the light-shielding film.
    Type: Grant
    Filed: March 8, 2011
    Date of Patent: November 25, 2014
    Assignee: Seiko Epson Corporation
    Inventors: Minoru Moriwaki, Masahiro Yasukawa, Ken Wakita
  • Publication number: 20140340602
    Abstract: A liquid crystal display device includes a thin film transistor substrate having a pixel region and a frame region, and a color filter substrate. The frame region includes a first metal wire that surrounds the outside of the pixel region, and a second metal wire that is formed so as to surround the outside of the first metal wire. The first metal wire has at least one slit at an area overlapping with a seal material.
    Type: Application
    Filed: August 6, 2014
    Publication date: November 20, 2014
    Inventors: Kenji Kitajima, Ryouhei Suzuki
  • Publication number: 20140340601
    Abstract: A liquid crystal panel includes a first glass substrate, a second glass substrate, a TFT formed on an internal surface of the first glass substrate, an electromagnetic induction module disposed on one side of the internal surface of the first glass substrate for receiving electromagnetic waves to generate current to provide driving current to the TFT, and wireless data receiving modules respectively set up on at least two adjacent sides of the internal surface of the first glass substrate for receiving wireless data signals to provide data to the TFT. Therefore, the present invention wirelessly transmits data and driving current to the liquid crystal panel. In hence, it does not arrange FPC on four sides of the liquid crystal panel for connecting with a PCB circuit so that a frame for protecting FPC is no need. Therefore, it achieves the LCD module with non-frame on four sides.
    Type: Application
    Filed: June 24, 2013
    Publication date: November 20, 2014
    Inventors: Jiahe Cheng, Dehua Li
  • Patent number: 8890857
    Abstract: A driving circuit for driving a display panel includes a dynamic ratioless shift register which is operated in a stable manner and can expand the degree of freedom of design. In the dynamic ratioless shift register which is provided with thin film transistors having semiconductor layers made of p-Si on a substrate surface, a node which becomes the floating state is connected to a fixed potential through a capacitance element.
    Type: Grant
    Filed: February 3, 2014
    Date of Patent: November 18, 2014
    Assignees: Japan Display Inc., Panasonic Liquid Crystal Display Co., Ltd.
    Inventors: Toshio Miyazawa, Iwao Takemoto, Atsushi Hasegawa, Masahiro Maki, Kazutaka Goto
  • Patent number: 8890406
    Abstract: A flat panel display and a method of fabricating the same are provided. The flat panel display includes a conductor, and a passivation layer pattern disposed on a side end of the conductor. As such, the passivation layer pattern can prevent or reduce corrosion and damage of the conductor. In one embodiment, the conductor includes a conductive layer formed of a material selected from the group consisting of aluminum and an aluminum alloy. The passivation layer pattern may be formed of an organic material or an inorganic material.
    Type: Grant
    Filed: May 4, 2012
    Date of Patent: November 18, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Tae-Wook Kang, Won-Kyu Kwak, Jeong-Bai Choi, Moon-Hee Park, Dong-Young Sung
  • Publication number: 20140333863
    Abstract: The present invention provides a liquid crystal display device, compensation circuit and TFT voltage shutdown method.
    Type: Application
    Filed: February 6, 2013
    Publication date: November 13, 2014
    Applicant: Shenzhen China Star Optoelectronics Technology Co., Ltd.
    Inventors: Poshen Lin, Yu Wu
  • Patent number: 8879036
    Abstract: To form a sufficiently large storage capacitor, a liquid crystal display device includes a liquid crystal display panel having a first substrate, a second substrate, and a liquid crystal held between the first substrate and the second substrate, the liquid crystal display panel having multiple pixels arranged in matrix. The first substrate has, in a transmissive display area provided in each of the pixels, a laminated structure containing a first transparent electrode, a first insulating film, a second transparent electrode, a second insulating film, and a third transparent electrode which are laminated in this order. The first transparent electrode and the second transparent electrode are electrically insulated from each other and together form a first storage capacitor through the first insulating film, and the second transparent electrode and the third transparent electrode are electrically insulated from each other and together form a second storage capacitor through the second insulating film.
    Type: Grant
    Filed: December 18, 2012
    Date of Patent: November 4, 2014
    Assignees: Japan Display Inc., Panasonic Liquid Crystal Display Co., Ltd.
    Inventors: Tohru Sasaki, Takahiro Ochiai
  • Patent number: 8879013
    Abstract: A thin-film transistor liquid crystal display device includes: a substrate and a signal line, a scan line, a pixel electrode, and a thin-film transistor that are formed on the substrate. The signal line and the scan line are arranged to intersect each other. The pixel electrode is located in a pixel display zone enclosed by the intersected signal line and scan line. The thin-film transistor includes a gate terminal, a source terminal, and a drain terminal. The gate terminal is electrically connected to the scan line. The drain terminal is electrically connected to the signal line. The source terminal is arranged at a position corresponding to the intersection of the signal line and the scan line and is electrically connected to the pixel electrode.
    Type: Grant
    Filed: January 16, 2012
    Date of Patent: November 4, 2014
    Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd.
    Inventor: Cheng-Hung Chen
  • Patent number: 8879011
    Abstract: An object is to provide a display device with excellent display characteristics, where a pixel circuit and a driver circuit provided over one substrate are formed using transistors which have different structures corresponding to characteristics of the respective circuits. The driver circuit portion includes a driver circuit transistor in which a gate electrode layer, a source electrode layer, and a drain electrode layer are formed using a metal film, and a channel layer is formed using an oxide semiconductor. The pixel portion includes a pixel transistor in which a gate electrode layer, a source electrode layer, and a drain electrode layer are formed using an oxide conductor, and a semiconductor layer is formed using an oxide semiconductor. The pixel transistor is formed using a light-transmitting material, and thus, a display device with higher aperture ratio can be manufactured.
    Type: Grant
    Filed: March 4, 2014
    Date of Patent: November 4, 2014
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Shunpei Yamazaki, Junichiro Sakata, Masashi Tsubuku, Kengo Akimoto, Miyuki Hosoba, Masayuki Sakakura, Yoshiaki Oikawa
  • Patent number: 8873010
    Abstract: According to one embodiment, a device includes a first substrate including a gate line, a source line which extends to intersect with the gate line, a pixel electrode which includes a primary pixel electrode extending substantially parallel to the source line, and a switching element located at the intersection of the gate line and the source line, a second substrate includes a common electrode which extends substantially parallel to the primary pixel electrode on both sides across the primary pixel electrode, and a liquid crystal layer including liquid crystal molecules held between the first and second substrates. The switching element includes a drain line which is electrically connected to the pixel electrode and which is located to overlap the gate line.
    Type: Grant
    Filed: October 15, 2012
    Date of Patent: October 28, 2014
    Assignee: Japan Display Inc.
    Inventors: Masakatsu Kitani, Jin Hirosawa
  • Publication number: 20140313443
    Abstract: A display panel, a transistor and the manufacturing method thereof are disclosed. The manufacturing method includes: forming a first electrode, a first insulation layer, a sacrificial layer, and a second/third electrode metal layer on a substrate in turn; etching the second/third electrode metal layer to expose at least portions of the sacrificial layer; and dry-etching the at least portions of the exposed sacrificial layer to expose at least portions of the first insulation layer. The etching selectivity ratio of the sacrificial layer to the first insulation layer is larger than a first value when the conditions of the etching process are the same. The first value is larger than one, in this way, the stability and the electron mobility of the transistor are enhanced.
    Type: Application
    Filed: April 24, 2013
    Publication date: October 23, 2014
    Applicant: Shenzhen China Star Optoelectronics Technology Co., Ltd.
    Inventors: Cheng-Lung Chiang, Po-Lin Chen
  • Publication number: 20140313439
    Abstract: A display device includes: a first substrate; a second substrate overlapping a portion of the first substrate; and a driver integrated circuit arranged in a non-overlapping area, which does not overlap with the second substrate, of the first substrate. The second substrate includes a side facing the driver integrated circuit, an integrated-circuit-opposed area on the second substrate formed along a line segment opposed to the driver integrated circuit in the side, and a terminal forming area being on the second substrate formed along the side and being different from the integrated-circuit-opposed area. A terminal of the second substrate is formed only in the terminal forming area.
    Type: Application
    Filed: April 17, 2014
    Publication date: October 23, 2014
    Applicant: Japan Display Inc.
    Inventor: Shohei MATSUMOTO
  • Publication number: 20140313444
    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: Application
    Filed: June 27, 2014
    Publication date: October 23, 2014
    Inventor: Hajime Kimura
  • Publication number: 20140313445
    Abstract: To provide a semiconductor device, a liquid crystal display device, and an electronic device which have a wide viewing angle and in which the number of manufacturing steps, the number of masks, and manufacturing cost are reduced compared with a conventional one. The liquid crystal display device includes a first electrode formed over an entire surface of one side of a substrate; a first insulating film formed over the first electrode; a thin film transistor formed over the first insulating film; a second insulating film formed over the thin film transistor; a second electrode formed over the second insulating film and having a plurality of openings; and a liquid crystal over the second electrode. The liquid crystal is controlled by an electric field between the first electrode and the second electrode.
    Type: Application
    Filed: July 3, 2014
    Publication date: October 23, 2014
    Inventor: Hajime Kimura
  • Patent number: 8867004
    Abstract: The present invention discloses a thin-film-transistor array substrate and a manufacturing method thereof. The array substrate includes a thin-film transistor and a compensation electrode. A gate electrode of the thin-film transistor is a portion of a scan-signal line and has an opening, and the opening extends to a side of the scan-signal line. A drain electrode of the thin-film transistor is disposed correspondingly to the opening. A source electrode of the thin-film transistor extends from a side of a data-signal line and surrounds the drain electrode. The compensation electrode extends from another side of the scan-signal line and corresponds to the gate electrode. Therefore, the present invention is capable of reducing parasitic capacitance between the drain electrode and the gate electrode without increasing the resistance value of the scan-signal line.
    Type: Grant
    Filed: September 20, 2011
    Date of Patent: October 21, 2014
    Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd.
    Inventor: Tsunglung Chang
  • Patent number: 8866981
    Abstract: The invention provides a vertical alignment liquid crystal panel, which includes a first glass substrate, a second glass substrate, and a liquid crystal layer that includes negative liquid crystal containing liquid crystal molecules having a pre-tilt angle of 0°-7°, chiral agent, and a photo- or heat-polymerizable polymer. The first glass substrate includes a liquid crystal panel driving circuit, which includes a gate driver, a source driver, a plurality of gate lines, and a plurality of data lines. The gate lines and the data lines define a plurality of pixel units, each of which includes a thin-film transistor, a common electrode, and a pixel electrode. The source driver applies a driving voltage of 0-6V via the thin-film transistor to the pixel electrode. The present invention improves elastic energy between the liquid crystal molecules and thus avoids image sticking caused by long term displaying of the same image at the same location.
    Type: Grant
    Filed: November 30, 2012
    Date of Patent: October 21, 2014
    Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd.
    Inventors: Xinhui Zhong, Xing Feng
  • Patent number: 8859312
    Abstract: A method of manufacturing an integrated circuit (IC) for driving a flexible display includes depositing a pattern of spatially non-repetitive features in a first layer on a flexible substrate, said pattern of spatially non-repetitive features not substantially regularly repeating in both of two orthogonal directions (x,y) in the plane of the substrate; depositing a pattern of spatially repetitive features in a second layer on said first layer; aligning said second layer and said first layer so as to allow electrical coupling between said non-repetitive features and said repetitive features, wherein distortion compensation is applied during deposition of said repetitive features to enable said alignment.
    Type: Grant
    Filed: October 1, 2007
    Date of Patent: October 14, 2014
    Assignee: Plastic Logic Limited
    Inventors: Carl Hayton, Paul A. Cain
  • Publication number: 20140293156
    Abstract: A conductive coating composition includes 0.1 to 10 parts by weight of a conductive polymer, 5 to 30 parts by weight of polysilazane, and 30 to 60 parts by weight of a solvent.
    Type: Application
    Filed: December 19, 2013
    Publication date: October 2, 2014
    Applicant: LG Display Co., Ltd.
    Inventors: Taeheon Kim, Geesung Chae, Sunghee Kim, Junsik Hwang, Chulhong Kim, Kwihong Park, Taehwan Jun, Yuseon Kho, Kilsuk Kim
  • Patent number: 8848127
    Abstract: An embodiment of the invention provide a liquid crystal panel comprising a driving chip assembly comprising: a chip lead wiring and a chip repair line, which are overlapped but insulated from each other; an array substrate comprising an array substrate lead wiring and an array substrate repair line, which are overlapped but insulated from each other; wherein the driving chip assembly is mounted on the array substrate which is electrically connected with the corresponding chip lead wiring connection, and the two ends of the chip repair line is electrically connected with the corresponding two ends of the array substrate repair line respectively.
    Type: Grant
    Filed: March 24, 2011
    Date of Patent: September 30, 2014
    Assignee: Beijing Boe Optoelectronics Technology Co., Ltd.
    Inventors: Wei Qin, Zhilong Peng
  • Publication number: 20140285732
    Abstract: A liquid crystal display device that is not influenced by a noise in obtaining positional information can be provided. The liquid crystal display device includes a first substrate provided with a pixel electrode and a common electrode with a first insulating film interposed therebetween. The pixel electrode and the common electrode partly overlap with each other. The liquid crystal display device further includes a second substrate provided with a pair of electrodes, a resin film covering the pair of electrodes, and a conductive film on the resin film. The pair of electrodes partly overlap with each other with a second insulating film interposed therebetween. The liquid crystal display device further includes a liquid crystal layer between the conductive film on the second substrate side and the pixel electrode and the common electrode on the first substrate side. A predetermined potential is supplied to the conductive film.
    Type: Application
    Filed: March 18, 2014
    Publication date: September 25, 2014
    Applicant: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Toru Tanabe, Takahiro Fukutome, Koji Moriya, Daisuke Kurosaki, Masakatsu Ohno
  • Patent number: 8842252
    Abstract: An array substrate includes a storage electrode layer; an insulating layer and a transparent electrode layer are coated on a surface of the storage electrode layer in sequence. Only the insulating layer is arranged between the storage electrode layer and the transparent electrode layer of the present disclosure.
    Type: Grant
    Filed: July 12, 2012
    Date of Patent: September 23, 2014
    Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd.
    Inventor: Shijian Qin
  • Patent number: 8841680
    Abstract: Solved is a problem of attenuation of output amplitude due to a threshold value of a TFT when manufacturing a circuit with TFTs of a single polarity. In a capacitor (105), a charge equivalent to a threshold value of a TFT (104) is stored. When a signal is inputted thereto, the threshold value stored in the capacitor (105) is added to a potential of the input signal. The thus obtained potential is applied to a gate electrode of a TFT (101). Therefore, it is possible to obtain the output having a normal amplitude from an output terminal (Out) without causing the amplitude attenuation in the TFT (101).
    Type: Grant
    Filed: November 6, 2013
    Date of Patent: September 23, 2014
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventor: Hajime Kimura
  • Patent number: 8842230
    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: June 4, 2013
    Date of Patent: September 23, 2014
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Shunpei Yamazaki, Yukie Suzuki, Hideaki Kuwabara, Hajime Kimura
  • Patent number: 8842095
    Abstract: Example embodiments are directed to light sensing circuits having a relatively simpler structure by using light-sensitive oxide semiconductor transistors as light sensing devices, and remote optical touch panels and image acquisition apparatuses, each including the light sensing circuits. The light sensing circuit includes a light-sensitive oxide semiconductor transistor in each pixel, wherein the light-sensitive oxide semiconductor transistor is configured as a light sensing device, and a driving circuit that outputs data. The light sensing circuit may have a relatively simple circuit structure including a plurality of transistors in one pixel. As a result, the structure and operation of the light sensing circuit may be simplified.
    Type: Grant
    Filed: December 17, 2010
    Date of Patent: September 23, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Sung-ho Park, I-hun Song, Chang-jung Kim, Sang-hun Jeon, Seung-eon Ahn
  • Publication number: 20140267966
    Abstract: A liquid crystal display includes a substrate; a thin film transistor on the substrate; a pixel electrode connected to the thin film transistor; a first insulating layer facing the pixel electrode; a plurality of microcavities each defined between the pixel electrode and the first insulating layer and including a liquid crystal injection hole exposing an inside of the microcavity; a liquid crystal layer including liquid crystal molecules, in the microcavities; a light blocking layer between adjacent microcavities; and a passivation layer member enclosing the light blocking layer.
    Type: Application
    Filed: September 13, 2013
    Publication date: September 18, 2014
    Applicant: Samsung Display Co., Ltd.
    Inventors: Sung Hwan Won, Yong Seok Kim, Lim Tae Woo, Pil Sook Kwon, Won Tae Kim, Han Joon Yoo, Dae Ho Lee, Nam Seok Roh, Woo Jae Lee
  • Publication number: 20140267943
    Abstract: In a liquid crystal substrate in which a matrix of reflecting electrodes is formed on a substrate, a transistor is formed corresponding to each reflective electrode and a voltage is applied to the reflective electrode through the transistor. A silicon oxide film having a thickness of 500 to 2,000 angstroms is used as the passivation film and the thickness is set to a value in response to the wavelength of the incident light to maintain a substantially constant reflectance.
    Type: Application
    Filed: April 25, 2014
    Publication date: September 18, 2014
    Applicant: SEIKO EPSON CORPORATION
    Inventor: Masahiro YASUKAWA
  • Patent number: 8835206
    Abstract: The present invention provides a pixel structure including a substrate, a first metal pattern layer, an insulating layer, a second metal pattern layer, a passivation layer, and a conductive protection layer. The substrate has at least one pixel region. The first patterned metal layer is disposed on the substrate, and has a top surface. The insulating layer is disposed on the first patterned metal layer and the substrate, and is in contact with the top surface of the first patterned metal layer. The second patterned metal layer is disposed on the insulating layer in the pixel region, and includes a source and a drain. The passivation layer is disposed on the second patterned metal layer and the insulating layer. A top surface of the source is in contact with the passivation layer, and the conductive protection layer is disposed on the drain.
    Type: Grant
    Filed: June 28, 2012
    Date of Patent: September 16, 2014
    Assignee: Chunghwa Picture Tubes, Ltd.
    Inventors: Chin-Tzu Kao, Jin-Chuan Kuo, Ya-Ju Lu
  • Patent number: 8836688
    Abstract: A display device which can prevent deterioration of a liquid crystal and reduction in display quality at low power consumption without lowering an aperture ratio is provided. An opposite voltage (Vcom) is applied to an opposite electrode (80) of a liquid crystal capacitive element (Clc). One ends of a pixel electrode (20), a first switch circuit (22), a second switch circuit (23), and a first terminal of a second transistor (T2) form an internal node (N1). The other ends of the first switch circuit (22) and the second switch circuit (23) are connected to a source line (SL) and a voltage supply line (VSL), respectively. A control terminal of a first transistor (T1) in the second switch circuit (23), a second terminal of the second transistor (T2), and one end of a boost capacitive element (Cbst) form an output node (N2). The other end of the boost capacitive element (Cbst) and the control terminal of the second transistor (T2) are connected to a boost line (BST) and a reference line (REF), respectively.
    Type: Grant
    Filed: November 19, 2010
    Date of Patent: September 16, 2014
    Assignee: Sharp Kabushiki Kaisha
    Inventor: Yoshimitsu Yamauchi
  • Publication number: 20140253835
    Abstract: Disclosed is a liquid crystal display, which includes a plurality of data lines, a plurality of scan lines, and a plurality of pixels respectively disposed at positions where the scan lines and the data lines cross each other. Each of the pixels includes a main pixel and a sub-pixel. The main pixel includes a main thin film transistor. The sub-pixel includes a sub-thin film transistor. A channel width-to-length ratio of the main thin film transistor is different from a channel width-to-length ratio of the sub-thin film transistor. The liquid crystal display of the present invention implements the eight-domain division by adopting difference channel width-to-length ratios of the main pixel and the sub-pixel.
    Type: Application
    Filed: December 2, 2011
    Publication date: September 11, 2014
    Applicant: Shenzhen China Star Optoelectronics Technology Co., Ltd.
    Inventor: Dong Li
  • Patent number: 8823913
    Abstract: A thin film transistor substrate includes a substrate including a display area including: pixels and a periphery area where a driver for driving the pixels is disposed; first signal lines connected with the pixels and extended to the periphery area, and including first short-circuit portions provided in the periphery area; second signal lines connected with the pixels and extended to the periphery area by crossing the first signal lines in an insulated manner; first connection members overlapping lateral ends of the first signal lines, disposed in lateral sides with respect to the first short-circuited portions, and formed of a doped semiconductor; and first repairing conductors overlapping the lateral ends of the first signal lines, and disposed in the lateral sides with respect to the first short-circuited portions. Lateral ends of the first connection members are connected with the lateral ends of the first signal lines through contact holes.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: September 2, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Guang-Hai Jin, Dong-Gyu Kim, Kwan-Wook Jung, Moo-Jin Kim
  • Patent number: 8823893
    Abstract: To reduce power consumption and suppress display degradation of a liquid crystal display device. To suppress display degradation due to an external factor such as temperature. A transistor whose channel formation region is formed using an oxide semiconductor layer is used for a transistor provided in each pixel. Note that with the use of a high-purity oxide semiconductor layer, off-state current of the transistor at a room temperature can be 10 aA/?m or less and off-state current at 85° C. can be 100 aA/?m or less. Consequently, power consumption of a liquid crystal display device can be reduced and display degradation can be suppressed. Further, as described above, off-state current of the transistor at a temperature as high as 85° C. can be 100 aA/?m or less. Thus, display degradation of a liquid crystal display device due to an external factor such as temperature can be suppressed.
    Type: Grant
    Filed: December 15, 2010
    Date of Patent: September 2, 2014
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventor: Shunpei Yamazaki
  • Publication number: 20140240628
    Abstract: A liquid crystal display (LCD) panel comprising a signal line, a first dielectric layer, a liquid crystal layer, a pixel electrode, and a thin film transistor (TFT) is provided. The first dielectric layer with a first permittivity ?1 is formed on the signal line and the TFT. An average permittivity of the liquid crystal layer is a second permittivity ?2 greater than the first permittivity ?1. The pixel electrode neighbors with the signal line. The distance between the signal line and a side of the first dielectric layer is a first distance d1, and the distance between a side of the first dielectric layer and a side of the pixel electrode is a second distance d2, wherein the second permittivity ?2, the first permittivity ?1, the first distance d1 and the second distance d2 are conformed to the following equation: ( 1 ? ? ? 1 ? ? ? 2 × ? 2 ? 1 + 1 ) × ? ? ? 2 < V ? ? th V ? ? d .
    Type: Application
    Filed: January 22, 2014
    Publication date: August 28, 2014
    Applicant: Innolux Corporation
    Inventor: Chien-Hung Chen