Electrical Excitation Of Liquid Crystal (i.e., Particular Voltage Pulses, Ac Vs. Dc, Threshold Voltages, Etc.) Patents (Class 349/33)
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Patent number: 9927666Abstract: A representative LCD system includes: liquid crystal material disposed between first and second substrates; protrusions supported by the first substrate and arranged in an array, each of the protrusions extending from a base; first pixel electrodes, with a corresponding one of the first pixel electrodes being positioned adjacent the base of a corresponding one of the protrusions; first common electrodes, with a corresponding one of the first common electrodes being positioned adjacent the base of a corresponding one of the protrusions such that each of the protrusions is positioned between one of the first pixel electrodes and one of the first common electrodes; second pixel electrodes, with a corresponding one of the second pixel electrodes being positioned on a corresponding one of the protrusions; and second common electrodes, with a corresponding one of the second common electrodes being positioned on a corresponding one of the protrusions.Type: GrantFiled: April 20, 2016Date of Patent: March 27, 2018Assignees: a.u. Vista Inc., The University of Central Florida Research Foundation, Inc.Inventors: Yi-Fen Lan, Daming Xu, Cheng-Yeh Tsai, Norio Sugiura, Shin-Tson Wu
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Patent number: 9865552Abstract: A water level package includes a substrate, a plurality of semiconductor chips mounted on the substrate, and molding members that contact the substrate and the plurality of semiconductor chips and are formed on the substrate. The molding members include two or more molding members that have coefficients of thermal expansion (CTEs) different from each other.Type: GrantFiled: January 21, 2016Date of Patent: January 9, 2018Assignee: Samsung Electronics Co., Ltd.Inventors: Han-Sung Ryu, Kyong-soon Cho
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Patent number: 9857634Abstract: A liquid crystal display includes a first substrate, a thin film transistor positioned on the first substrate, a first electrode connected to the thin film transistor, a second substrate facing the first substrate, a first alignment layer positioned on the first electrode and a second alignment layer positioned on the second substrate, and a liquid crystal layer positioned between the first substrate and the second substrate and including a liquid crystal molecule. At least one of the first alignment layer and the second alignment layer includes a copolymer of cyclobutanedianhydride (CBDA), a diamine, and a compound represented by Chemical Formula 2. In which X of Chemical Formula 2 represents —(CH2)m-O—(CH2)n—, and a sum of m and n is an odd number.Type: GrantFiled: September 9, 2014Date of Patent: January 2, 2018Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Bong Sung Seo, Suk Hoon Kang, Baek Kyun Jeon
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Patent number: 9835891Abstract: The present invention proposes an LCD panel and a method for forming the same. The LCD panel includes an isolator disposed between two adjacent liquid crystal units. Liquid crystal molecules of red liquid crystal units and green liquid crystal units are mixed with quantum rods (QRs) of corresponding colors. The red liquid crystal units correspond to a position of the red pixels, the green liquid crystal units correspond to a position of the green pixels. The QRs and liquid crystal molecules have long axes and directions of the long axes of QRs and liquid crystal molecules are the same.Type: GrantFiled: October 15, 2015Date of Patent: December 5, 2017Assignee: SHENZHEN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.Inventor: Guohe Liu
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Patent number: 9835923Abstract: A bistable liquid crystal spatial light modulating (SLM) device (SLM) device utilizes the homeotropic and bubble domain texture change of a cholesteric liquid crystal that is responsive to external stimuli, such as electric voltage, light and pressure. The SLM device is configured to be switched between the two stable textures of the bubble domain texture or the fingerprint texture. In addition, the SLM device may be switched between transparent and light-scattering states by the application of an electric field, light irradiation or physical/mechanical pressure. The light transmission state and the light-scattering states of the present invention are also stable in time at zero voltage, and are reversible upon the application of an external field at a different voltage, frequency or wavelength of light.Type: GrantFiled: July 21, 2015Date of Patent: December 5, 2017Assignee: Kent State UniversityInventors: Liang-Chy Chien, Andrii Varanytsia
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Patent number: 9798402Abstract: A touch control display screen includes: a touch control electrode layer including a plurality of touch control electrodes; a first electrode layer opposite to the touch control electrode layer and including a plurality of first electrodes; a liquid crystal layer between the touch control electrode layer and the first electrode layer; a switch control circuit connected with at least one touch control electrode; a display control circuit connected with the first electrodes; and a synchronization control circuit connected with the switch control circuit. In the display stage, the display control circuit outputs a first common voltage, and the synchronization control circuit controls the switch control circuit to output a second common voltage equal to the first common voltage. Many advantages are provided, such as a uniform display effect, fewer residual ions, better display quality, higher reliability, simplified circuit, lower cost, and increased light transmittance.Type: GrantFiled: April 20, 2015Date of Patent: October 24, 2017Assignees: SHANGHAI TIANMA MICRO-ELECTRONICS CO., LTD., TIANMA MICRO-ELECTRONICS CO., LTD.Inventors: Xingyao Zhou, Fei Li, Yong Yuan
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Patent number: 9791746Abstract: The present invention provides a liquid crystal display panel. The liquid crystal display panel includes a TFT substrate and a CF substrate that are respectively provided with first and second alignment films that allow for vertical light alignment, so that after irradiation of ultraviolet light, the first alignment film and the second alignment film have alignment directions that are substantially parallel but opposite to each other and the liquid crystal molecules are set at a tilt angle for being nearly vertically aligned.Type: GrantFiled: October 28, 2015Date of Patent: October 17, 2017Assignee: SHENZHEN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.Inventors: Yanjun Song, Chungching Hsieh, Yongchao Zhao, Xiang Li
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Patent number: 9791749Abstract: A display device including: a substrate including a display area in which pixels are positioned and a peripheral area around the display area; a common electrode and a pixel electrode that are positioned on the display area and overlapping with each other, with a first insulating layer disposed therebetween; a common voltage line positioned on or below the common electrode and contacting the common electrode; an edge common voltage line connected with the common voltage line and formed along an edge of the display area; and a first common voltage transfer line contacting the edge common voltage line in the peripheral area and configured to transfer a common voltage to the common voltage line.Type: GrantFiled: November 21, 2016Date of Patent: October 17, 2017Assignee: Samsung Display Co., Ltd.Inventors: Hyung Sup Byeon, Sung Hoon Kim, Ji-Won Sohn
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Patent number: 9785028Abstract: To display an image and the back side image in an overlapped state on a screen, with good visibility and see-through capability. The screen scanned with an image light from the projector has an optical layer and a plurality of control electrodes which are arranged side by side along the optical layer. The synchronous controller applies a voltage to the plurality of control electrodes, and, in a scanning period T of the image light, switches the optical state of the screen by the unit of the segmented region, between the visual state and the nonvisual state. The synchronous controller, in the period T, switches the optical state of a plurality of segmented regions 22 in synchronous with the scanning period of the image light, maintains the optical state of a projected region of the screen in the visual state by a voltage with two or more amplitudes.Type: GrantFiled: August 20, 2015Date of Patent: October 10, 2017Assignee: PIONEER CORPORATIONInventor: Toshihiro Yoshioka
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Patent number: 9753592Abstract: An electrostatic capacitive sensor includes a plurality of transmitter electrodes, a plurality of receiver electrodes, and a control circuit. The control circuit includes: a transmitter circuit configured to apply a periodical transmission signal to each of the plurality of transmitter electrodes; and a receiver circuit configured to generate, based on a reception signal generated in each of the plurality of receiver electrodes in response to the transmission signal, a detection signal indicating a change in electrostatic capacitance formed at each of intersections of the plurality of transmitter electrodes and the plurality of receiver electrodes, wherein the transmitter circuit and the receiver circuit are configured to switch between a first mode and a second mode, in the first mode, the transmission/reception signal is sequentially applied/monitored and in the second mode, the plurality of transmitter/receiver electrodes are grouped so that the same signal is applied to the same group.Type: GrantFiled: June 11, 2015Date of Patent: September 5, 2017Assignee: ROHM CO., LTD.Inventors: Yuki Oishi, Yo Yamashiro
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Patent number: 9746726Abstract: The present invention discloses a liquid crystal display, a method improving the response time thereof, and an array substrate. The array substrate comprises a substrate and multiple pixel units provided in the array on the substrate. Each said pixel unit comprises a first pixel electrode and a second pixel electrode that are used to generate a first electric field to control liquid crystal molecules deflected from an initial direction to a predetermined angle spaced from each other provided along a first direction, and a third pixel electrode and a fourth pixel electrode that are used to generate a second electric field to control liquid crystal molecules deflected from the predetermined angle to the initial direction spaced from each other provided along a second direction. Compared with the prior art, the present invention can improve the response time of the liquid crystal display, thereby improving the display quality.Type: GrantFiled: January 19, 2016Date of Patent: August 29, 2017Assignee: Wuhan China Star Optoelectronics Technology Co., LtdInventor: Chang Xie
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Patent number: 9726941Abstract: A pixel unit, including: a pixel electrode, a gate electrode, a gate electrode line connected with the gate electrode, a source electrode, a data line connected with the source electrode, a second electrode disposed in a same layer as the pixel electrode, a first drain electrode connected with the pixel electrode, and a second drain electrode connected with the second electrode; the first drain electrode and the second drain electrode and the source electrode are provided with a channel therebetween, and the first drain electrode and the second drain electrode do not contact each other; along a direction of the data line, the edge of the second electrode is parallel with the edge of the pixel electrode and the two do not contact. An array substrate, a pixel driving method and a display device are further disclosed for overcoming the phenomenon of light leakage of the edge of the pixel unit caused by reduction of the width of the black matrix.Type: GrantFiled: August 2, 2013Date of Patent: August 8, 2017Assignees: BOE TECHNOLOGY GROUP CO., LTD., BEIJING BOE OPTOELECTRONICS TECHNOLOGY CO., LTD.Inventors: Zhenwei Wang, Yao Yu, Lei Tang, Xin Li, Jian Ren, Jing Wang, Ying Zhang, Yang Pei
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Patent number: 9728146Abstract: According to an aspect, a liquid-crystal display device includes: a liquid crystal layer including a pixel; a driving circuit unit for applying a driving voltage to the pixel; a status detection unit that detects a response speed of the liquid crystal layer; and a control unit that controls a gradation of the pixel by controlling the driving voltage. The control unit switches between a first mode and a second mode based on a detection result from the status detection unit. In the first mode, the control unit uses each of a predetermined number of voltage values from a minimum voltage value to a maximum voltage as a voltage value of the driving voltage corresponding to a gradation value. In the second mode, the control unit uses part of the predetermined number of voltage values as a voltage value of the driving voltage for overdrive.Type: GrantFiled: March 19, 2014Date of Patent: August 8, 2017Assignee: Japan Display Inc.Inventor: Toshiharu Matsushima
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Patent number: 9709637Abstract: A light emitting element circuit includes a light emitting element (1), a current supply path to the light emitting element (1), a constant current circuit (2) that supplies a current to the light emitting element (1) via the current supply path, and an electric discharge path that discharges an electric charge accumulated at the light emitting element (1) and at a region connected between the both electrodes when the constant current circuit (2) stops a current supply to the light emitting element (1). A light emitting element failure detector (4) that detects a short-circuit of the light emitting element (1) in a light emitting element circuit includes a current instantaneous interruption circuit (5), a voltage detector (60), and a determiner (62).Type: GrantFiled: June 28, 2012Date of Patent: July 18, 2017Assignee: NEC Lighting, Ltd.Inventor: Toshiya Iwakiri
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Patent number: 9691798Abstract: A display device includes: an insulating layer positioned on a first insulating substrate; a pixel electrode including a first subregion electrode applied with a first voltage and positioned beneath the insulating layer, a first subpixel electrode which includes a second subregion electrode positioned on the insulating layer, and a second subpixel electrode which is positioned on the insulating layer and applied with a second voltage; a second insulating substrate facing the first insulating substrate; and a common electrode positioned under the second insulating substrate and applied with a common voltage, wherein one pixel area is divided into a first part in which the second subregion electrode is positioned, a second part in which the first subregion electrode and a portion of the second subpixel electrode overlap each other, and a third part which does not overlap the first subregion electrode in the second subpixel electrode.Type: GrantFiled: February 26, 2016Date of Patent: June 27, 2017Assignee: Samsung Display Co., Ltd.Inventors: In-Jae Hwang, Mee Hye Jung, Jang Mi Kang, Il Gon Kim
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Patent number: 9677929Abstract: An aperture adjusting apparatus is provided. The aperture adjusting apparatus includes: a variable part of which an aperture size varies; an optical sensor configured to sense light incident to the variable device part and light output from the variable device part; an aperture calculator configured to calculate a size of an aperture formed in the variable part from light intensity sensed by the optical sensor; and a driving controller configured to control driving of the variable device part by receiving a calculation result fed back from the aperture calculator.Type: GrantFiled: January 7, 2014Date of Patent: June 13, 2017Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Eun-sung Lee, Seung-wan Lee, Jong-hyeon Chang, Kyu-dong Jung, Min-seog Choi
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Patent number: 9664962Abstract: A pixel electrode formed into a slit structure with striped electrodes opposed to each other for a zero rubbing angle can provide fast response since rotational directions of the liquid crystals become opposite at both sides of the slit in the striped electrodes. The electrode structure, however, poses a problem of low transmittance. Provided is a liquid crystal display device of IPS-Pro scheme including a pixel electrode with one pair of striped electrodes. The first striped electrode includes a short electrode section and long electrode sections, and the second striped electrode also includes a short electrode section and long electrode sections. The long electrode sections of the first striped electrode are disposed adjacently to those of the second striped electrode. Liquid crystals are aligned in a lengthwise direction of the striped electrodes.Type: GrantFiled: November 4, 2015Date of Patent: May 30, 2017Assignee: Japan Display Inc.Inventors: Mika Oiwa, Shinichiro Oka, Toshiharu Matsushima
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Patent number: 9658369Abstract: Provided is a geometric transformation lens which can transform a target image geometrically as desired, achieving downsizing and reducing energy consumption. Even if another target to be observed more in detail is inside the field of view, the geometric transformation lenses (20a, 20b, 20c and 20d) can magnify optically the desired region within the target projection image by supplying the magnification instruction voltage (V2,mn) to the corresponding magnifying/demagnifying electrodes (EL2,mn) simply without moving the lens itself using heavy mechanical parts motorized. This can achieve downsizing because a space for setting the existing mechanical part to control the direction of the lens and its motion can be disregarded. This also can achieve reducing energy consumption because no space is needed to move the lenses with the heavy mechanical parts.Type: GrantFiled: May 11, 2012Date of Patent: May 23, 2017Inventors: Sota Shimizu, Susumu Sato
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Patent number: 9645623Abstract: A semiconductor integrated circuit includes a digital circuit configured to receive a first power supply to operate in synchronization with a clock signal, and an electric-charge supplying circuit configured to supply electric charge from a second power supply to the digital circuit in synchronization with the clock signal.Type: GrantFiled: April 2, 2014Date of Patent: May 9, 2017Assignee: FUJITSU LIMITEDInventor: Satoshi Matsubara
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Patent number: 9632368Abstract: The present invention provides a liquid crystal display pixel structure and a manufacture method thereof. The liquid crystal display pixel structure comprises: a lower substrate, a passivation layer located on an upper surface of the lower substrate, a pixel electrode located on the passivation layer, an upper substrate, and a common electrode located on a lower surface of the upper substrate; each pixel comprises multi domains; in one pixel, the passivation layer comprises at least two trench structures having different depths, and the pixel electrode uninterruptedly covers on the trench structures, the trench structures having different depths divide the one pixel into different areas to realize that liquid crystals in different areas of the one pixel have different twisted angles under the same driving voltage.Type: GrantFiled: February 6, 2015Date of Patent: April 25, 2017Assignee: Shenzhen China Star Optoelectronics Technology Co., LtdInventors: Feng Zhao, Chungyi Chiu
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Patent number: 9618903Abstract: Disclosed are a holographic image display device and a method for driving the same which may stabilize luminance of a holographic image and reduce flicker. The holographic image display device includes a laser backlight unit, a surface light converter converting laser light emitted from the laser backlight unit into surface light-type laser light and emitting the surface light-type laser light, a spatial light modulator (SLM) implementing an input holographic interference pattern and projecting a holographic image at a viewing point using the surface light-type laser light, and an optical switching unit located between the laser backlight unit and the SLM and controlling polarization of the laser light. The optical switching unit blocks laser light emitted to the SLM in a blocking mode, and transmits the laser light emitted to the SLM in a transmission mode.Type: GrantFiled: December 17, 2013Date of Patent: April 11, 2017Assignee: LG Display Co., Ltd.Inventors: Dong-Jun Choi, Ju-Seong Park, Woo-Young Choe
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Patent number: 9612431Abstract: An electrowetting display includes first and second substrates facing each other, an electrowetting layer, a first electrode, a second electrode, and a hydrophobic barrier layer. The electrowetting layer is disposed between the first substrate and the second substrate and includes a first fluid and a second fluid, and the first fluid has an electrical conductivity or a polarity. The first electrode is disposed on the first substrate, and the second electrode forms an electric field in cooperation with the first electrode to control a position of the first fluid. The hydrophobic barrier layer is disposed between the first substrate and the electrowetting layer to cover the first electrode and includes a first surface making contact with the first electrode and a second surface having a hydrophobicity stronger than a hydrophobicity of the first surface and making contact with the electrowetting layer.Type: GrantFiled: November 20, 2014Date of Patent: April 4, 2017Assignee: Amazon Technologies, Inc.Inventors: SungHoon Yang, Woo Yong Sung
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Patent number: 9601054Abstract: There is provided a display device including a pixel array unit in which a plurality of pixels are arrayed in a matrix shape. A predetermined amount of light emission variation is added to a light emission state of each pixel and a cycle of the light emission state of the pixel array unit in the case of the addition is shorter than the cycle of a light emission state of the pixel array unit before the predetermined amount of light emission variation is added.Type: GrantFiled: May 8, 2013Date of Patent: March 21, 2017Assignee: JOLED INC.Inventor: Tsutomu Shimayama
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Patent number: 9557570Abstract: A display device includes a display panel and a liquid crystal lens panel. The liquid crystal lens panel includes a first substrate and a second substrate that face each other; a first electrode layer disposed on the first substrate; a second electrode layer disposed on the second substrate; and a liquid crystal layer interposed between the first substrate and the second substrate. The first electrode layer includes a plurality of first linear electrodes and a plurality of second linear electrodes, the liquid crystal layer includes first liquid crystal molecules adjacent to the first linear electrode that are pre-tilted in a first direction, and second liquid crystal molecules adjacent to the second linear electrodes that are pre-tilted in a second direction opposite the first direction.Type: GrantFiled: April 15, 2014Date of Patent: January 31, 2017Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Seung Jun Jeong, Kyung Ho Jung
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Patent number: 9557571Abstract: According to an embodiment, a liquid crystal lens device includes an optical element and a voltage controller. The optical element includes: a refractive index modulation layer of which a refractive index distribution changes according to a voltage applied thereto; and electrodes to apply a voltage to the refractive index modulation layer. In a first voltage state, the voltage controller controls voltages applied to the electrodes such that a first refractive index distribution is arranged periodically in the optical element. In a second voltage state, the voltage controller controls voltages applied to the electrodes such that a second refractive index distribution is achieved. In an intermediate voltage state, the voltage controller controls a voltage applied to a first-type electrode, to which a first voltage that is the maximum value among the voltages applied to the electrodes in the first voltage state is applied, to a second voltage lower than the first voltage.Type: GrantFiled: June 5, 2014Date of Patent: January 31, 2017Assignee: Kabushiki Kaisha ToshibaInventors: Masako Kashiwagi, Shinichi Uehara, Ayako Takagi
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Patent number: 9552773Abstract: Disclosed herein is a display device in which light emitting elements of a plurality of colors including a light emitting element emitting blue light are formed in each pixel on a substrate on which a transistor is formed for each sub-pixel, and a plurality of pixels formed with sub-pixels of the plurality of colors as a unit are arranged in a form of a matrix, wherein relative positional relation between transistors of sub-pixels of respective light emission colors including blue light and a light emitting section of a light emitting element emitting the blue light is laid out such that distances between the transistors of the sub-pixels of the respective light emission colors including the blue light and the light emitting section of the light emitting element emitting the blue light are equal to each other for the respective colors.Type: GrantFiled: January 14, 2016Date of Patent: January 24, 2017Assignee: Sony CorporationInventors: Tetsuo Minami, Katsuhide Uchino
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Patent number: 9552784Abstract: According to one embodiment, a lateral electric-field type of liquid crystal display device includes a display panel including a plurality of liquid crystal pixels arranged in a matrix, and a controller configured to perform intermittent driving to rewrite an image signal to the liquid crystal pixels, wherein a frame frequency falls within a range of 10 Hz to 20 Hz, and an absolute value of a flexo coefficient (e11, e33) of a liquid crystal applied to the liquid crystal pixels is 1.6 pC/m or less.Type: GrantFiled: August 1, 2014Date of Patent: January 24, 2017Assignee: Japan Display Inc.Inventors: Daiichi Suzuki, Yukio Tanaka, Kenji Nakao, Kazuhiro Nishiyama, Shinichi Komura, Shinichiro Oka, Mika Oiwa
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Patent number: 9523891Abstract: The present invention provides a display substrate and a manufacture method thereof.Type: GrantFiled: February 9, 2015Date of Patent: December 20, 2016Assignee: Shenzhen China Star Optoelectronics Technology Co., LtdInventor: Yuchih Wu
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Patent number: 9513521Abstract: A display device including: a substrate including a display area in which pixels are positioned and a peripheral area around the display area; a common electrode and a pixel electrode that are positioned on the display area and overlapping with each other, with a first insulating layer disposed therebetween; a common voltage line positioned on or below the common electrode and contacting the common electrode; an edge common voltage line connected with the common voltage line and formed along an edge of the display area; and a first common voltage transfer line contacting the edge common voltage line in the peripheral area and configured to transfer a common voltage to the common voltage line.Type: GrantFiled: June 26, 2013Date of Patent: December 6, 2016Assignee: Samsung Display Co., Ltd.Inventors: Hyung Sup Byeon, Sung Hoon Kim, Ji-Won Sohn
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Patent number: 9513515Abstract: A liquid crystal display includes: a first electrode and a second electrode disposed on a first substrate, the first electrode and the second electrode being disposed at a same layer; a second substrate facing the first substrate; a third electrode and a fourth electrode disposed on the second substrate and disposed at different layers; and a liquid crystal layer including liquid crystal molecules disposed between the first substrate and the second substrate, wherein the first electrode, the second electrode, and the third electrode each include a plurality of branch electrodes, but the fourth electrode does not; and wherein the first electrode is electrically connected to the third electrode.Type: GrantFiled: March 5, 2014Date of Patent: December 6, 2016Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Jae Hoon Jung, Ki Chul Shin, Min Ju Han, Ji Phyo Hong, Su Jeong Kim, Hoon Kim
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Patent number: 9501164Abstract: Provided is a thin film transistor liquid crystal display (TFT LCD) in which a capacitive touch sensor is embedded, the TFT LCD comprising: a touch sensor source follower TFT formed on a substrate; a first electrode connected to a gate electrode of the touch sensor source follower TFT; a touch sensor reset TFT including the first electrode; an insulator film formed on the first electrode; a second electrode formed on the insulator film; and a display switching TFT including the second electrode, wherein the second electrode is connected to a drain electrode of the display switching TFT; the touch sensor reset TFT and the gate electrode of the touch sensor source follower TFT share the first electrode; and the first electrode is connected to the gate electrode of the touch sensor source follower TFT.Type: GrantFiled: July 12, 2013Date of Patent: November 22, 2016Assignee: SILICON DISPLAY TECHNOLOGYInventors: Yong Ju Ham, Ji Ho Hur, Ki Joong Kim
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Patent number: 9496286Abstract: A display substrate includes a display area corresponding to a plurality of pixels, a peripheral area surrounding the display area, a thin film transistor for driving a corresponding one of the pixels, a gate line electrically coupled to the thin film transistor, a data line crossing the gate line and electrically coupled to the thin film transistor, a pixel electrode electrically coupled to the thin film transistor, and a common electrode overlapping the pixel electrode and having a first opening overlapping a first pixel of the pixels, and a second opening overlapping a second pixel of the pixels adjacent the first pixel, wherein the first opening and the second opening extend in different directions, and wherein the common electrode is continuous and overlaps the first and second pixels.Type: GrantFiled: June 20, 2013Date of Patent: November 15, 2016Assignee: Samsung Display Co., Ltd.Inventors: Yong-Je Jeon, Jin-Suk Park, Seok-Je Seong, Sang-Woo Park
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Patent number: 9454047Abstract: A liquid crystal display panel includes an upper substrate and a lower substrate arranged opposite to each other, a liquid crystal layer disposed between the upper and lower substrates, a first electrode on the upper substrate facing the lower substrate side, and a second electrode and a third electrode on the lower substrate facing the upper substrate and electrically insulated from each other. The first, second and third electrodes are connected respectively to first, second and third voltages. When the first voltage is opposite in polarity to the second voltage and the second voltage is identical in polarity to the third voltage, the liquid crystal display panel is in a first display state. When the first voltage is identical in polarity to the third voltage and the second voltage is opposite in polarity to the third voltage, the liquid crystal display panel is in a second display state.Type: GrantFiled: April 7, 2015Date of Patent: September 27, 2016Assignees: SHANGHAI AVIC OPTOELECTRONICS CO., LTD., TIANMA MICRO-ELECTRONICS CO., LTD.Inventors: Kerui Xi, Tingting Cui
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Patent number: 9430979Abstract: Embodiments of the invention disclose a liquid crystal display panel, a method for driving the same, and a display device, to improve the transmissivity and the image display quality of the LCD panel. The LCD panel comprises a first substrate and a second substrate disposed opposite to each other, and a liquid crystal layer positioned between the first substrate and the second substrate; a first electrode and a second electrode insulated from and disposed on the first electrode are disposed on a side of the first substrate which is close to the liquid crystal layer; one of the first electrode and the second electrode is a common electrode, the other is a pixel electrode; a third electrode and a fourth electrode are disposed on a side of the second substrate which is close to the liquid crystal layer, one of the third electrode and the fourth electrode is a common electrode, and the other is a pixel electrode.Type: GrantFiled: December 11, 2013Date of Patent: August 30, 2016Assignees: BOE TECHNOLOGY GROUP CO., LTD., BEIJING BOE DISPLAY TECHNOLOGY CO., LTD.Inventors: Yingying Qu, Honglin Zhang, Dan Wang
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Patent number: 9417489Abstract: Embodiments of the present invention disclose a liquid crystal display device, comprising: a first substrate, including a base substrate, and gate lines and data lines, formed on the base substrate and crossing each other to define a plurality of pixel structures; a second substrate, cell-assembled with the first substrate to form a liquid crystal cell; and a liquid crystal layer, filled between the first substrate and the second substrate, wherein each of the plurality of pixel structures comprises: the base substrate; a common electrode, formed on the base substrate; a first insulating layer, formed on the common electrode; a plurality of strip-shaped pixel electrodes, formed on the first insulating layer, wherein the plurality of strip-shaped pixel electrodes include a plurality of positive electrodes and negative electrodes which are disposed alternately.Type: GrantFiled: July 30, 2013Date of Patent: August 16, 2016Assignee: BOE TECHNOLOGY GROUP CO., LTD.Inventors: Zhiqiang Xu, Hyunsic Chol, Yoonsung Um, Hui Li
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Patent number: 9400412Abstract: An optical modulator includes a liquid crystal cell containing liquid crystal material having liquid crystal molecules oriented along a quiescent director direction in the unbiased state, and a voltage source configured to apply an electric field to the liquid crystal material wherein the direction of the applied electric field does not cause the quiescent director direction to change. An optical source is arranged to transmit light through or reflect light off the liquid crystal cell with the light passing through the liquid crystal material at an angle effective to undergo phase retardation in response to the voltage source applying the electric field. The liquid crystal material may have negative dielectric anisotropy, and the voltage source configured to apply an electric field to the liquid crystal material whose electric field vector is transverse to the quiescent director direction.Type: GrantFiled: July 16, 2014Date of Patent: July 26, 2016Assignee: KENT STATE UNIVERSITYInventors: Volodymyr Borshch, Sergij V. Shiyanovskii, Oleg D. Lavrentovich
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Patent number: 9366920Abstract: Provided are a liquid crystal display (LCD) device and fabricating method thereof. The liquid crystal display device, including a liquid crystal panel, includes: a first substrate, including: a pixel electrode, and a common electrode separated from the pixel electrode, a ratio of a width of the pixel electrode to a distance between the pixel electrode and the common electrode being in a range of about 1:1 to 1:7, and a nanocapsule liquid crystal layer formed on the first substrate, the nanocapsule liquid crystal layer including: a buffer material, and nanocapsules, each filled with liquid crystal molecules.Type: GrantFiled: December 17, 2013Date of Patent: June 14, 2016Assignee: LG Display Co., Ltd.Inventors: Kyeong Jin Kim, Jung Im Hwang, Ji Na Jeon, Kyung Su Ha
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Patent number: 9341900Abstract: According to one embodiment, a liquid crystal display device includes a first substrate including a plurality of first signal lines disposed with a first pitch along a second direction, a plurality of second signal lines disposed with a second pitch along a first direction, and a first electrode including an n-number of first main electrodes (n is an integer of 2 or more), a second substrate including a second electrode including a plurality of second main electrodes disposed with a third pitch along the first direction, wherein an n-number of times the third pitch is substantially equal to the second pitch, and any one of the second main electrodes is located above each of the second signal lines.Type: GrantFiled: July 5, 2012Date of Patent: May 17, 2016Assignee: JAPAN DISPLAY INC.Inventors: Arihiro Takeda, Hirokazu Morimoto, Jin Hirosawa
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Patent number: 9335604Abstract: A holographic waveguide display comprises: a source of light; at least one switchable grating layer comprising a multiplicity of grating regions each switchable between a diffracting state and a non diffracting state; means for spatio-temporally modulating light from the source to provide image light comprising at least one beam deflector for scanning the light in at least one of two orthogonal directions and at least one modulator for amplitude modulating the light. A first scanned angular range of light is diffracted through a first area into a first field of view by a first set of grating regions, and through a second area into to the first field of view by a second set of grating regions. Each grating region of the first and second sets has a first grating function. The first and second areas lie within an exit pupil of the display.Type: GrantFiled: December 11, 2013Date of Patent: May 10, 2016Inventors: Milan Momcilo Popovich, Jonathan David Waldern
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Patent number: 9298329Abstract: The display device includes a panel comprising driving electrodes and receiving electrodes, and a touch sensing unit comprising a driver supplying a common voltage to the driving electrodes and the receiving electrodes during an image display period, and sequentially supplying a driving voltage to the driving electrodes to determine whether the panel is touched, during a touch sensing period, and a receiver determining whether there is a touch on the panel based on comparison of a sensing signal induced through the receiving electrodes by the driving voltage with a reference voltage applied to the receiving electrodes. The reference voltage is different from an intermediate level of the driving voltage corresponding to an average of a maximum level and a minimum level of the driving voltage. A root mean square value of the reference voltage is substantially equal to a root mean square value of the driving voltage.Type: GrantFiled: May 20, 2014Date of Patent: March 29, 2016Assignee: LG Display Co., Ltd.Inventor: Hoon Bae Kim
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Patent number: 9298032Abstract: Disclosed is a liquid crystal display including: a first substrate; a gate line disposed on the first substrate; a data line disposed on the gate line; and a thin film transistor connected to the gate line and the data line. A plurality of color filters is disposed on the thin film transistor and the data line. A capping layer is disposed on the plurality of color filters. A shielding electrode is disposed on the capping layer. An insulating layer is disposed on the capping layer and includes a first opening extending to a part of the shielding electrode. A light blocking member is disposed on the insulating layer and the shielding electrode. The shielding electrode is disposed in a part corresponding to the data line. Adjacent color filters among the plurality of color filters overlap with each other in the part corresponding to the data line. The first opening is disposed in a part corresponding to the region where the adjacent color filters overlap with each other.Type: GrantFiled: July 10, 2014Date of Patent: March 29, 2016Assignee: Samsung Display Co., Ltd.Inventors: Hyung Gi Jung, Jae Hwa Park, Ki Pyo Hong
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Patent number: 9239492Abstract: Provided is a liquid crystal display capable of reducing a texture by increasing a liquid crystal control ability. The liquid crystal display includes a first electrode and a second electrode facing each other with a liquid crystal layer therebetween. The first electrode includes a horizontal extension forming a boundary between adjacent subregions and a vertical extension connected to the horizontal extension, and the horizontal extension includes a portion which has a largest width at a position proximate to the vertical extension, and which has a smaller width at a position farther from the vertical extension.Type: GrantFiled: November 26, 2013Date of Patent: January 19, 2016Assignee: Samsung Display Co., Ltd.Inventors: Kee-Bum Park, Dong Hee Shin, Kyung Ho Kim, Ho Kyung Kim, Yoo Mi Ra
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Patent number: 9135866Abstract: A display apparatus, according to the present invention, that displays an image by causing a backlight to emit light at an emission brightness value in accordance with brightness of the image, the display apparatus comprises: an input unit that inputs an image signal; a division unit that divides one frame period into a plurality of sub-frame periods when one frame of the image signal includes a plurality of images having different brightness; and a display controlling unit that performs control of switching between the plurality of images for each sub-frame period and displaying the images.Type: GrantFiled: August 16, 2012Date of Patent: September 15, 2015Assignee: CANON KABUSHIKI KAISHAInventors: Koki Nakamura, Atsushi Mizutome
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Patent number: 9123592Abstract: An array substrate is disclosed. The array substrate comprises a substrate, a plurality of common electrodes formed on the substrate, a plurality of gate signal lines formed above the common electrodes, and a plurality of common electrode signal line units corresponding to the plurality of common electrodes, respectively. The plurality of common electrode signal line units are formed on the corresponding common electrodes, respectively. Each of the common electrode signal line units comprises a first common electrode signal line perpendicular to the gate signal line and a second common electrode signal line parallel to the gate signal line. The first and second common electrode signal lines are made of metal and cross with each other and are electrically connected to each other. Two adjacent common electrode signal line units are electrically connected by a bridge line. The present disclosure also relates to a method for manufacturing the array substrate and a display apparatus.Type: GrantFiled: July 28, 2014Date of Patent: September 1, 2015Assignees: BOE Technology Group Co., Ltd., Beijing BOE Display Technology Co., Ltd.Inventors: Zhenyu Zhang, Xibin Shao, Yanping Liao, Yoon Dae Keun, Dan Wang
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Patent number: 9110330Abstract: An automatic darkening and glare reducing liquid crystal mirror for vehicles is disclosed. The mirror has a front substrate (101) of transparent glass or plastic and a back substrate (109) of glass or plastic with a highly reflective or transflective mirrored coating (108). The front and back substrates are spaced apart a small distance to define a liquid crystal cell between the substrates and a liquid crystal fluid (106) incorporating dichroic dyes is contained within the liquid crystal cell. A conductive thin film (102) is applied onto the interior surface of the front substrate and the reflective or transflective coating (108) of the back substrate also is conductive. An alignment compound is deposited on the conductive thin film (102) and on the reflective or transflective coating (108) and the alignment compound bounds the liquid crystal cell.Type: GrantFiled: March 27, 2013Date of Patent: August 18, 2015Assignee: Opti-Source LLCInventors: Walter Y. Wen, Robin Hines, Chai T. Chang
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Patent number: 9097949Abstract: A pixel structure including a substrate, a first dielectric layer and a second dielectric layer is provided. A signal line and a pixel electrode are disposed on the substrate. The first dielectric layer covers the signal line and has a first capacitance. The second dielectric layer is disposed on the substrate, and covers the pixel electrode. The second dielectric layer has a second capacitance larger than the first capacitance.Type: GrantFiled: March 18, 2013Date of Patent: August 4, 2015Assignee: INNOLUX CORPORATIONInventors: Chien-Hung Chen, Pi-Ying Chuang, Chuan-Chung Wang, Yu-Wei Chen
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Patent number: 9091859Abstract: A display apparatus includes: a display unit that displays a two-dimensional image; and a variable lens array disposed to face the display unit, wherein the variable lens array includes a first substrate having a transparent first common electrode, a second substrate having a transparent second common electrode, and a liquid crystal layer disposed between the first substrate and the second substrate and forming liquid crystal lens columns, the liquid crystal layer is processed in such a way that liquid crystal molecules are so oriented that each of the liquid crystal lens columns produces refracting power in a state in which no potential difference is present between the first common electrode and the second common electrode, and a voltage applied between the first common electrode and the second common electrode controls the refracting power of each of the liquid crystal lens columns.Type: GrantFiled: May 24, 2012Date of Patent: July 28, 2015Assignee: Japan Display Inc.Inventors: Tsuyoshi Ohyama, Daisuke Takama
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Patent number: 9081240Abstract: A liquid crystal display device (100) of the present invention has a plurality of pixels (P) which are in a matrix arrangement and includes: a first substrate (1) which includes a pixel electrode (12) which is provided in each pixel; a second substrate (2) which opposes the first substrate; and a vertical alignment liquid crystal layer (3) which is provided between these substrates, wherein light that is incident on the liquid crystal layer is circularly-polarized light, and the liquid crystal layer modulates the circularly-polarized light, thereby realizing display. The pixel electrode includes at least one cruciform trunk portion (12a), a plurality of branch portions (12b) extending from the at least one cruciform trunk portion in a direction of about 45°, and a plurality of slits (12c) provided between the plurality of branch portions. The second substrate includes a plurality of counter electrodes (22) which are electrically independent of each other in each pixel.Type: GrantFiled: May 19, 2011Date of Patent: July 14, 2015Assignee: Sharp Kabushiki KaishaInventors: Kunihiro Tashiro, Hideki Fujimoto, Yoshihito Hara
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Publication number: 20150146125Abstract: The present invention provides a liquid crystal display panel and a liquid crystal display device each having sufficiently excellent transmittance, and a thin film transistor array substrate for use in the liquid crystal display panel and the liquid crystal display device. The present invention provides a liquid crystal display panel including a first substrate, a second substrate, and a liquid crystal layer interposed between the first and second substrates, wherein the first substrate includes an electrode having a T-shaped branched section, and the electrode includes linear portions forming the T-shaped branched section and separately extending in directions different from a pixel array direction.Type: ApplicationFiled: April 17, 2013Publication date: May 28, 2015Inventors: Yuichi Kita, Takatomo Yoshioka, Yoshiki Nakatani, Kazuhiko Tsuda
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Publication number: 20150146120Abstract: The present invention provides a nozzle face wiping device and an image recording device that can switch whether to wipe out a nozzle face by a simple mechanism. According to one mode of the present invention, it is possible to brake the running of the wiping web by the braking device on the upstream side (supply shaft side) of the pressure member. In a case where the running direction of the wiping web wound around the pressure member and the relative movement direction of the nozzle face are the same, it is possible to prevent the wiping web from being forcefully drawn out from the supply shaft by braking the running of the wiping web by the braking device. By this means, it is possible to wipe out the nozzle face from two directions.Type: ApplicationFiled: February 2, 2015Publication date: May 28, 2015Applicant: FUJIFILM CORPORATIONInventors: Noriaki MAIDA, Yuichi OZAKI