Light-controlling Display Elements Patents (Class 345/84)
  • Patent number: 8717281
    Abstract: An electrofluidic device includes first structural layer and second structural layer. First structural layer includes first substrate; and first electrode and second electrode on the first substrate. The second electrode has an indent region surrounding and without contacting first electrode. First hydrophobic layer is at least over the second electrode. Second structural layer at one side of the first structural layer with a gap includes second substrate and groove structure layer. The groove structure layer includes an indent groove, corresponding to the indent region of the second electrode. Second hydrophobic layer is over the groove structure layer. Polar fluid is disposed in the indent groove and remains in contact with the first electrode. Non-polar fluid is disposed in the gap between the first and second structural layers.
    Type: Grant
    Filed: March 28, 2011
    Date of Patent: May 6, 2014
    Assignee: Industrial Technology Research Institute
    Inventors: Yun-Sheng Ku, Wei-Yuan Cheng, Pei-Ju Su, Shu-Wei Kuo
  • Publication number: 20140118325
    Abstract: There are provided a liquid crystal display device and a driving method thereof, which can reduce power consumption and improve image quality. A liquid crystal display device includes pixels, a data driver and at least one gate driver. The pixels are positioned at intersection portions of gate lines and data lines. The data driver supplies a data signal having a first or second polarity to the data lines. The at least one gate driver supplies, to the gate lines, a first gate signal corresponding to the first polarity and a second gate signal corresponding to the second polarity.
    Type: Application
    Filed: August 22, 2013
    Publication date: May 1, 2014
    Inventors: Chang-Jin Im, Dong-Wan Choi, Hee-Kwon Eun
  • Patent number: 8711082
    Abstract: A method for driving a bistable display device is provided. The bistable display device has a matrix of pixels arranged in a plurality of rows and a plurality of columns, a timing controller and a source driver. The timing controller is configured to sequentially output control signals which correspond to a positive high voltage, a negative high voltage and a ground voltage respectively to the source driver. The source driver is configured to drive each pixel with the voltages corresponding to the control signals. The method comprises: providing only the positive high voltage or the ground voltage to one of two pixels in two adjacent rows of the same column if the source driver provides the positive high voltage to the other one when the source driver consecutively drives the two pixels.
    Type: Grant
    Filed: May 12, 2010
    Date of Patent: April 29, 2014
    Assignee: E Ink Holdings Inc.
    Inventors: Ying-Chuan Cheng, Rui-Yang Lai
  • Patent number: 8708560
    Abstract: The invention relates to a method for the temperature-dependent adjustment of the color properties or the photometric properties of an LED illuminating device having LEDs emitting light of different colors or wavelengths or LED color groups emitting light of the same color or wavelength within a color group, the luminous flux portions thereof determine the color of light, color temperature and/or the chromaticity coordinates of the light mixture emitted by the LED illuminating device.
    Type: Grant
    Filed: September 8, 2008
    Date of Patent: April 29, 2014
    Assignee: Arnold & Richter Cine Technik, GmbH & Co. Betriebs KG
    Inventor: Regine Kraemer
  • Publication number: 20140111409
    Abstract: An image display unit, includes: an image display section having pixels each including red, green, blue, and white pixels; and a signal generating section configured to generate red, green, blue, and white sub-pixel signals, the signal generating section being configured to determine values of the red, green, and blue sub-pixel signals Rcvt, Gcvt, and Bcvt, based on a first matrix and a second matrix, with use of a coefficient ‘Purity’, an additive-color-mixture matrix, and a purity coefficient ‘?’, and being configured to employ a value of the white sub-pixel signal Wcvt as a value of min (RnL, GnL, BnL), where the min (RnL, GnL, BnL) represents a minimum value of the red-, green-, and blue-display image signal RnL, GnL, and BnL that are linearized and normalized and are provided for each of the pixels.
    Type: Application
    Filed: September 26, 2013
    Publication date: April 24, 2014
    Applicant: Sony Corporation
    Inventors: Ryo Kasegawa, Akihito Nishiike
  • Patent number: 8704755
    Abstract: An electrophoretic display includes a display area where images are displayed, and an edge area around the display area and where a single color is displayed. The display area includes a plurality of display pixels which include gate lines on a first substrate, data lines intersecting the gate lines, thin film transistors connected to the gate lines and data lines, display pixel electrodes on the first substrate and connected to the thin film transistors, a common electrode on a second substrate and facing the first substrate, and an electronic ink layer between the display pixel electrodes and the common electrode The edge area includes a plurality of edge pixels which include edge pixel electrodes in a same shape as the display pixel electrodes.
    Type: Grant
    Filed: March 8, 2011
    Date of Patent: April 22, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Ji-Sun Kim, Seong-Young Lee
  • Patent number: 8698713
    Abstract: Fluorescent screens and display systems and devices based on such screens using at least one excitation optical beam to excite one or more fluorescent materials on a screen which emit light to form images. The fluorescent materials may include phosphor materials and non-phosphor materials such as quantum dots. A screen may include a multi-layer dichroic layer.
    Type: Grant
    Filed: September 7, 2010
    Date of Patent: April 15, 2014
    Assignee: Prysm, Inc.
    Inventors: Roger A. Hajjar, David Kent, Phillip H. Malyak
  • Patent number: 8692744
    Abstract: A display device is disclosed. The display device includes: a pixel array unit and a driving unit which drives the pixel array unit. The pixel array unit includes rows of first scanning lines and second scanning lines, columns of signals, pixels in a matrix state arranged at portions where the scanning lines and the signal lines cross each other and power supply lines and ground lines supplying power to respective pixels. The driving unit includes a first scanner performing line-sequential scanning to pixels by each row by supplying a first control signal to each first scanning line sequentially, a second scanner supplying a second control signal to each second scanning line sequentially so as to correspond to the line-sequential scanning and a signal selector supplying a video signal to rows of signal lines so as to correspond to the line-sequential scanning.
    Type: Grant
    Filed: April 26, 2012
    Date of Patent: April 8, 2014
    Assignee: Sony Corporation
    Inventors: Junichi Yamashita, Takao Tanikame, Katsuhide Uchino
  • Patent number: 8693081
    Abstract: A device and method of making and using the same. The device includes first and second substrates that are spaced to define a fluid space. Polar and non-polar fluids occupy the fluid space. A first electrode, with a dielectric layer, is positioned on the first substrate and electrically coupled to at least one voltage source, which is configured to supply an electrical bias to the first electrode. The fluid space includes at least one fluid splitting structure that is configured to facilitate the movement of the non-polar fluid into a portion of the polar fluid. Fluid splitting structure assisted movement of the non-polar fluid splits the polar fluid.
    Type: Grant
    Filed: September 29, 2011
    Date of Patent: April 8, 2014
    Assignee: University of Cincinnati
    Inventors: Jason Heikenfeld, Matthew Hagedon, Kenneth Dean Andrew
  • Publication number: 20140085172
    Abstract: A threshold voltage sensing circuit applied in a display panel includes a first sensor and a second sensor. The first sensor positioned in the display panel receives an operation signal at a regular time point after start-up and continuously receives multiple driving signals which are the same as those received by the pixel circuits of the display panel and outputs a first output voltage accordingly. The second sensor positioned in the display panel receives the driving signals at a regular time point after start-up and outputs a second output voltage accordingly. When the voltage difference between the first output voltage and the second output voltage is beyond a variation standard, the low level of the gate voltage of the pixel circuit is adjusted.
    Type: Application
    Filed: June 24, 2013
    Publication date: March 27, 2014
    Inventors: Chi-Liang WU, Po-Hsin LIN, Young-Ran CHUANG, Chin-Wen LIN, Ted-Hong SHINN
  • Publication number: 20140085171
    Abstract: A driving circuit for a flat panel display device is disclosed. In one aspect, the driving circuit includes a first region having a first width and a first length, a second region on one side of the first region and having the first width and the first length, and a third region on one side of the second region and having a second width and a second length, wherein the second width and the second length are different from the first width and the first length. The driving circuit also includes a fourth region on one side of the third region and having the second width and the second length, wherein each region has one or more transistors of only one type.
    Type: Application
    Filed: January 29, 2013
    Publication date: March 27, 2014
    Applicant: Samsung Display Co., Ltd.
    Inventor: Hyeon-Ja Jo
  • Patent number: 8681083
    Abstract: A display device includes a pixel matrix having pixel rows and pixel columns and including pixels having switching elements positioned alternately at a corner near an upper and a lower side of each pixel row and positioned alternately at a corner near an upper and a lower side of and alternately at a corner near a left and a right side of each pixel column; multiple pairs of gate lines transmitting a gate-on voltage; and multiple data lines transmitting data voltages, wherein each pair of gate lines are disposed at the upper and lower sides of each pixel row with the pixels in each row connected to the gate line positioned nearest the respective switching element, and each data line is disposed between adjacent pairs of pixel columns and connected to pairs of pixels where one pixel of the pair has a switching element positioned nearest the respective data line.
    Type: Grant
    Filed: April 18, 2005
    Date of Patent: March 25, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Nam-Soo Kang, Seong-Young Lee, Sung-Man Kim, Seung-Hwan Moon
  • Patent number: 8681079
    Abstract: An optical device suitable for forming a pixel in a video display. The optical device includes a first layer having a first refractive index; a second layer over the first layer, the second layer having a second refractive index less than the first refractive index; and a third layer over the second layer, the third layer having a third refractive index larger than the second refractive index; and a fourth layer that is at least partially optically absorptive, wherein the optical stack and the fourth layer are a first distance from one another when the device is in a first state and are a second distance from one another when the device is in a second state, the first distance different from the second distance.
    Type: Grant
    Filed: November 30, 2011
    Date of Patent: March 25, 2014
    Assignee: QUALCOMM MEMS Technologies, Inc.
    Inventor: Gang Xu
  • Patent number: 8674933
    Abstract: An integrated system comprising both imaging and computing capabilities comprises a light valve and a CPU, as well as other functional members for performing computing and imaging.
    Type: Grant
    Filed: November 19, 2007
    Date of Patent: March 18, 2014
    Assignee: Texas Instruments Incorporated
    Inventors: Wei-Yan Shih, Henry W. Neal, Michael McCormick, Paul Gerard Barker
  • Patent number: 8675030
    Abstract: The present invention relates to a method for displaying a video image on a digital display device during a video frame comprising at least two distinct time segments for displaying a grey level. The cells of the device are able to take selectively an on state or an off state. The cells are able moreover to change state several times during a video frame. According to the invention, the cells change state at most once during each time segment of the video frame. The invention makes it possible to attenuate or suppress disturbances related to the temporal integration and to the sequential displaying of the R, G, B components of the video image.
    Type: Grant
    Filed: March 7, 2003
    Date of Patent: March 18, 2014
    Assignee: Thomson Licensing S.A.
    Inventors: Didier Doyen, Thierry Borel, Jonathan Kervec
  • Patent number: 8669925
    Abstract: An inexpensive light emitting device capable of displaying a bright image and an electric appliance using the light emitting device. In the light emitting device having a pixel portion and a driver circuit formed on one insulating member, all of semiconductor elements for the pixel portion and the driver circuit are formed by n-channel semiconductor elements, thereby enabling the manufacturing process to be simplified. Each of light-emitting elements provided in the pixel portion emits light in such a direction that most of the light travels away from the insulating member, so that substantially the whole of the pixel-forming segment electrode (corresponding to a cathode of an EL element) is formed as an effective light-emitting area. Therefore, a low-priced light-emitting device capable of displaying a bright image can be obtained.
    Type: Grant
    Filed: October 4, 2012
    Date of Patent: March 11, 2014
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Shunpei Yamazaki, Jun Koyama, Toru Takayama
  • Patent number: 8665192
    Abstract: A display device having pixels disposed in a matrix and a pixel row in which a first pixel, a second pixel, a third pixel, and a fourth pixel are disposed in one direction, includes: a gate signal line having a first gate signal line to which the first pixel and the third pixel are connected and a second gate signal line to which the second pixel and the fourth pixel are connected; a drain signal line supplying a video signal to two pixel columns; and a storage line including a first storage line and a second storage line disposed so as to interpose the pixel row therebetween, wherein the first storage line and the second storage line are electrically connected to each other in a region where the drain signal line is not disposed, and a pixel electrode of each of the pixels has a portion overlapping with the drain signal line and a portion overlapping with the storage line.
    Type: Grant
    Filed: May 4, 2010
    Date of Patent: March 4, 2014
    Assignees: Hitachi Displays, Ltd., Panasonic Liquid Crystal Display Co., Ltd.
    Inventors: Osamu Nagashima, Takahiro Nagami
  • Patent number: 8659534
    Abstract: A backlight driving apparatus is disclosed which is capable of simplifying a circuit configuration for driving of a plurality of light emitting diode arrays and making the current balance of the light emitting diode arrays uniform. The backlight driving apparatus includes n light emitting diode arrays that include a plurality of light emitting diodes connected in series, a power source for generating a driving current, a current generator for generating currents to drive the light emitting diode arrays using the driving current, respectively, and a current mirror circuit for allowing substantially the same amount of currents to flow respectively through the light emitting diode arrays based on current from any one of the n light emitting diode arrays.
    Type: Grant
    Filed: August 22, 2007
    Date of Patent: February 25, 2014
    Assignee: LG Display Co., Ltd.
    Inventors: Pu Jin Kim, Seung Hyun Kim
  • Patent number: 8659588
    Abstract: A display substrate includes a base substrate including a display area and a peripheral area, a pixel disposed on the display area, wherein the pixel includes; a pixel transistor connected to a gate line and a data line which cross each other, and a pixel electrode connected to the pixel transistor and the pixel electrode, and a gate driving circuit disposed on the peripheral area, wherein the gate driving circuit outputs a gate signal to the gate line and comprises a plurality of stages, an n-th stage of the gate driving circuit including a plurality of circuit transistors and a boosting capacitor including a first capacitor and a second capacitor, the plurality of circuit transistors and the first capacitor being disposed on a first area and the second capacitor being disposed on a second area of the peripheral area positioned between the first area and the display area.
    Type: Grant
    Filed: May 19, 2011
    Date of Patent: February 25, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventor: Bon-Yong Koo
  • Patent number: 8654047
    Abstract: An electro-optic device includes an electro-optic panel that includes a pixel region having a plurality of pixels arranged at a plurality of intersections where a plurality of scanning lines and a plurality of data lines cross each other, a polarity reverser that reverses, at a first frequency, a polarity of a video signal supplied to the plurality of pixels, a light source that emits light onto the pixel region, a pulse driver that pulse-drives the light source at a second frequency, and a setter that sets the first frequency and the second frequency so that a difference value between each of a plurality of first frequency components of the first frequency and each of a plurality of second frequency components of the second frequency is greater than a predetermined threshold value.
    Type: Grant
    Filed: February 20, 2009
    Date of Patent: February 18, 2014
    Assignee: Seiko Epson Corporation
    Inventor: Hirosada Horiguchi
  • Publication number: 20140035898
    Abstract: A driver IC includes: a plurality of driver circuits that are individually provided for respective light modulation elements and drive the light modulation elements, in which the light modulation elements each perform light modulation on received light in response to an applied voltage; and a plurality of output terminals outputting signals derived from the respective driver circuits to outside. The driver IC is a single driver IC that drives the light modulation elements. The output terminals are disposed on sides of the driver IC, and the respective output terminals are disposed on the different sides for the respective corresponding driver circuits.
    Type: Application
    Filed: July 26, 2013
    Publication date: February 6, 2014
    Applicant: Sony Corporation
    Inventors: Noboru Toyozawa, Takashi Hirakawa, Taro Ichitsubo, Eiji Kato
  • Patent number: 8643578
    Abstract: A method of driving a display apparatus having first and second data lines includes applying a first data signal (to which a first gamma curve has been applied) and a first inverted data signal (having a phase opposite to a phase of the first data signal) to the first data line and the second data line, respectively, during a first frame interval. The method further includes applying a second data signal (to which a second gamma curve has been applied) and a second inverted data signal (having a phase opposite to a phase of the second data signal) to the first data line and the second data line, respectively, during a second frame interval temporally subsequent to the first frame interval.
    Type: Grant
    Filed: February 11, 2009
    Date of Patent: February 4, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jian Gang Lu, Hwa-Sung Woo
  • Patent number: 8643576
    Abstract: A method of driving a plurality of pixel circuits. The pixel circuits are disposed corresponding to intersections between a plurality of scanning lines and a plurality of signal lines. Each of the pixel circuits includes: a light emitting element; a driving transistor; a holding capacitor; and a selection switch electrically interconnecting the signal line and the gate of the driving transistor at the time of the selection of the scanning line. The method includes: supplying a gradation potential to each signal line during a first period, selecting the scanning line during a second period, and supplying the gradation potential to the gate of the driving transistor; controlling the driving transistor of each of the pixel circuits to be in an ON state, supplying a reference potential to the gate of the corresponding driving transistor, and executing a first compensation operation and supplying driving current to the light emitting element.
    Type: Grant
    Filed: August 3, 2009
    Date of Patent: February 4, 2014
    Assignee: Seiko Epson Corporation
    Inventors: Hideto Ishiguro, Satoshi Yatabe
  • Publication number: 20140028534
    Abstract: A substantially rectangular display panel includes a first edge extending in a first major axis direction of the rectangular shape and a second edge extending in a second major axis direction of the rectangular shape, the second direction being different from the first direction. The display panel includes: a plurality of gate lines extending in the first direction; and a gate lines driver including a plurality of main stages sequentially connected to each other and configured for outputting gate signals to the gate lines, where the plurality of stages further includes one or more dummy stages arranged in a row along the second edge and not connected to the plurality of gate lines, and where a layout arrangement of a plurality of thin film transistors included in the main stage is different from a corresponding layout arrangement of corresponding thin film transistors included in the at least one dummy stage.
    Type: Application
    Filed: December 21, 2012
    Publication date: January 30, 2014
    Applicant: Samsung Display Co., Ltd.
    Inventors: Kee-Bum PARK, Kyung Ho KIM, Hyuk-Jin KIM, Dong Hee SHIN, Byoung Sun NA
  • Publication number: 20140028743
    Abstract: A display device 2 includes: a display panel 50 having a display area; and a plurality of position information patterns 3 arranged on the display area and each representing information regarding a position thereof on the display area. Each position information pattern 3 is formed of a plurality of optically readable marks 31 that are formed from a material that transmits visible light. On the display area, a plurality of sub-pixels 5R, 5G, and 5B whose colors are different from each other are repeatedly aligned in a determined alignment direction. A length L between both ends of the mark 31 in the alignment direction meets a relational expression of n×P+w?L?(n+1)×P?w (n is an integer of 0 or greater) where a width of the sub-pixel in the alignment direction is w and a pitch between the pixels 5 in the alignment direction is P.
    Type: Application
    Filed: June 27, 2013
    Publication date: January 30, 2014
    Inventors: Hiroshi YAMAGUCHI, Kazuhiro YAMADA, Takashi YAMADA, Yosuke ASAI
  • Patent number: 8638339
    Abstract: A method is for correcting pixel data provided to a display apparatus. The display apparatus includes a display panel having a plurality of pixels and a light source module having a plurality of light-emitting blocks. The method includes determining a pixel luminance that is a luminance of light provided to one of the pixels; and generating correction data to correct the pixel data, the correction data being generated based on the pixel luminance and a maximum emission luminance that is a maximum luminance of the light emitted from one of the light-emitting blocks.
    Type: Grant
    Filed: April 8, 2010
    Date of Patent: January 28, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Weon-Jun Choe, Yun-Jae Park, Dae-Gwang Jang, Kyoung-Phil Kim, Sang-Su Han
  • Publication number: 20140022230
    Abstract: A display device and method of forming a display device are provided. A display device includes: a first auxiliary electrode coupled to a first power voltage supply line; a second auxiliary electrode coupled to a second power voltage supply line with a first link electrode; an active area, comprising: scan lines; data lines; first voltage lines; second voltage lines; and pixels; and a display drive circuit configured to supply data voltages to data links coupled to the data lines, wherein the first auxiliary electrode, the second auxiliary electrode, the first power voltage supply line, the second power voltage supply line, the data links, and the display drive circuit being in a bezel area corresponding to an area outside the active area, the second auxiliary electrode being between the first auxiliary electrode and the active area, the first auxiliary electrode being between the second auxiliary electrode and the display drive circuit.
    Type: Application
    Filed: July 11, 2013
    Publication date: January 23, 2014
    Inventors: Taro HASUMI, Jino LEE, Jungchul KIM, Jaehee PARK, Sehwan NA
  • Patent number: 8629863
    Abstract: A method is provided of driving an electronic device comprising an array of device elements, each device element comprising particles which are moved to control a device element state, and each device element comprising a collector electrode, and an output electrode. The method comprises: in a reset phase, applying a first set of control signals to control the device to move the particles to the a reset electrode; and in an addressing phase, applying a second set of control signals to control the device to move the particles from the reset electrode such that a desired number of particles are at the output electrode.
    Type: Grant
    Filed: November 22, 2007
    Date of Patent: January 14, 2014
    Assignee: Koninklijke Philips N.V.
    Inventors: Martinus Hermanus Wilhelmus Maria Van Delden, Franciscus Paulus Maria Budzelaar, Sander Jurgen Roosendaal
  • Patent number: 8629819
    Abstract: There has been a problem that power consumption is increased if a potential of a signal line changes every time a video signal is applied to a driving transistor from the signal line, since the parasitic capacitance of the signal line stores and releases electric charges. In a configuration of a display portion provided with a gate signal line for selecting an input of a video signal to a pixel and a source signal line for inputting a video signal to the pixel, a switch is connected in series with the source signal line, the switch being controlled to be in on state when the pixel is not selected by the gate signal line, and in off state when the pixel is selected by the gate signal line. Accordingly, the parasitic capacitance of the source signal line which stores and releases electric charges affects only pixels between an output side of a source driver up to and including the pixel selected to be written with a video signal.
    Type: Grant
    Filed: July 10, 2006
    Date of Patent: January 14, 2014
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventor: Atsushi Umezaki
  • Publication number: 20140009371
    Abstract: Described is a device comprising: an array of light modulating elements; and one or more processing elements for controlling each of the light modulating elements, wherein the light modulating elements are arranged in a two-dimensional array, and wherein the one or more processing elements are adapted to skip some bit locations and use other bit locations of bit values when performing multiple bit logical and/or arithmetic operations.
    Type: Application
    Filed: August 28, 2013
    Publication date: January 9, 2014
    Applicant: SYNDIANT, INC.
    Inventor: Karl M. Guttag
  • Patent number: 8624895
    Abstract: A digitally controlled lighting system where aspects have a central media server connected to remote media servers. The connection may have separate networks for control versus media. Automatic synchronization of the contents of the media servers may be carried out.
    Type: Grant
    Filed: January 13, 2006
    Date of Patent: January 7, 2014
    Assignee: Production Resource Group, LLC
    Inventors: Charles Reese, Mark A. Hunt
  • Patent number: 8624824
    Abstract: A backlight display has improved display characteristics. An image may be displayed on the display where the image includes a liquid crystal material with a light valve. The display receives an image signal and uses the image signal to modify the light for a backlight array and a liquid crystal layer.
    Type: Grant
    Filed: March 19, 2009
    Date of Patent: January 7, 2014
    Assignee: Sharp Laboratories of America, Inc.
    Inventor: Xiao-fan Feng
  • Patent number: 8624806
    Abstract: A pixel circuit and an organic light-emitting diode (OLED) display using the pixel circuit is provided. The pixel circuit includes: an OLED; a third N-channel metal-oxide semiconductor (NMOS) transistor coupled to a data line and a first scan line and configured to apply a data signal to a first node; a storage capacitor having one terminal coupled to the first node and the other terminal coupled to a second node; a fourth NMOS transistor coupled between a first power and the second node and configured to apply a voltage of the first power to the second node; a first NMOS transistor having a first electrode, a second electrode, and a gate electrode coupled to the second node; and a second NMOS transistor coupled between the second node and the first electrode of the first NMOS transistor and configured to diode-connect the first NMOS transistor.
    Type: Grant
    Filed: March 2, 2010
    Date of Patent: January 7, 2014
    Assignee: Samsung Display Co, Ltd.
    Inventors: Bo-Yong Chung, Keum-Nam Kim
  • Patent number: 8625187
    Abstract: A DND chip is disclosed. In one aspect, the chip includes a 2D DND array of DND elements logically arranged in rows and columns, and a DND driver architecture for actuating the DND elements. The DND driver has a set of first drive lines along the rows and a set of second drive lines along the columns, a set of first line drivers for each biasing one line from the set of first drive lines and a set of second line drivers for each biasing a line from the set of second drive lines. A plurality of second line drivers are spatially grouped together to serve a block of DND elements, and that plurality of second line drivers are spatially covered substantially completely by at least some DND elements of the block of DND elements. A holographic visualization system including the DND chip is provided.
    Type: Grant
    Filed: November 16, 2011
    Date of Patent: January 7, 2014
    Assignee: IMEC
    Inventors: Geert Van Der Plas, Stefan Cosemans
  • Patent number: 8614591
    Abstract: A mother substrate including a plurality of organic light emitting display panels that include pixel circuits having a simple structure, is designed so that a sheet unit test may be performed while preventing or reducing brightness variation during sheet unit test, and a sheet unit test method for the mother substrate. The mother substrate also includes first and second wiring line groups and a compensating unit. The compensating unit is coupled to a coupling line for coupling a wiring line from among the first and second wiring line groups for transmitting a sheet unit test signal to the panels. The compensating unit is also for subtracting a voltage corresponding to a threshold voltage of a driving transistor included in a pixel of the panels from the sheet unit test signal before transmitting the sheet unit test signal to the panels.
    Type: Grant
    Filed: October 5, 2010
    Date of Patent: December 24, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventors: Kwang-Min Kim, Won-Kyu Kwak, Ji-Hyun Ka, Sam-Il Han
  • Publication number: 20130335400
    Abstract: A 2D/3D switching system contains a 2D/3D switching device having a display area for selectively processing lights from 2D images and 3D images. The 2D/3D switching device includes a first substrate, a plurality of first electrodes formed on the first substrate, a second substrate, a plurality of second electrodes formed on the second substrate and arranged corresponding to the plurality of first electrodes and separated with a distance, and a liquid crystal layer placed between the first substrate and the second substrate to provide the display area. A driving unit is configured to provide driving voltages to the plurality of first electrodes and the plurality of second electrodes. The driving unit applies a plurality of voltages on the first electrodes and the second electrodes to enable the liquid crystal layer to operate in one of a full-screen 2D mode, a full-screen 3D mode, and a 2D/3D mode.
    Type: Application
    Filed: August 20, 2013
    Publication date: December 19, 2013
    Applicant: SuperD Co. Ltd.
    Inventors: XU HONG, HONGWEI QUAN, XIAODA GONG, FUZHONG GUO
  • Patent number: 8610662
    Abstract: The invention relates to a method of driving an electrowetting display which includes a plurality of electrowetting elements, the display comprising at least one first fluid and a second fluid immiscible with each other, each of the electrowetting elements comprising at least one surface area. In a first, relatively low voltage, driving state of an electrowetting element the second fluid tends to cover the at least one surface area, and in a second, relatively high voltage, driving state of an electrowetting element the first fluid tends to cover the at least one surface area.
    Type: Grant
    Filed: November 15, 2007
    Date of Patent: December 17, 2013
    Assignee: Liquavista B.V.
    Inventors: Robert Gerardus Hendrik Boom, Roy Van Dijk, Henricus Petronella Maria Derckx
  • Patent number: 8610651
    Abstract: The invention relates to an active-matrix display device which comprises: an array of light emitters, each emitter being supplied by power supply means; a current modulator having a trip-threshold voltage, said modulator being able to be addressed by applying a data setpoint to one of its terminals and a drain current being able to flow through said modulator in order to control said emitter; and trip-threshold voltage compensation means comprising a comparator for comparing the value of the drain current with the value of the data setpoint during a programming step. The power supply means for the emitters are capable of supplying the emitters during the programming step.
    Type: Grant
    Filed: December 21, 2004
    Date of Patent: December 17, 2013
    Assignee: Thomson Licensing
    Inventor: Philippe Le Roy
  • Publication number: 20130328856
    Abstract: A display apparatus includes a display device and a display driving system having a data input connected to a distributor for providing signals for driving image regions. Each image region has an active display state in which it is driven with an active voltage signal including a first signal level which sets the image region to the active display state and a second signal level applied for a shorter duration than the first signal level. Operation includes (1) applying the first signal level to an image region in response to receiving data on the data input indicating that the image region is to be set to the active display state, (2) applying the second signal level to the image region after said first signal level has been applied, and (3) reapplying the first signal level before receipt of further data for said image region on the data input.
    Type: Application
    Filed: August 15, 2013
    Publication date: December 12, 2013
    Applicant: Liquavista B.V.
    Inventors: Robert Gerardus Hendrik Boom, Roy Van Dijk, Henricus Petronella Maria Derckx
  • Patent number: 8605064
    Abstract: A current drive circuit which can improve a rate for signal writing and a driving rate of an element even when a signal current is small, and a display device using the current drive circuit are provided. The current drive circuit for supplying a signal current to a node of a driven circuit through a signal line includes a precharge function for supplying a precharge voltage to the node through the signal line and the precharge function includes a supply function for supplying the precharge voltage to the node and the signal line prior to supplying the signal current.
    Type: Grant
    Filed: December 12, 2012
    Date of Patent: December 10, 2013
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventor: Hajime Kimura
  • Patent number: 8605015
    Abstract: Described is a device comprising a spatial light modulator comprising a plurality of comparators for computing a respective drive for each pixel of a plurality of pixels.
    Type: Grant
    Filed: December 22, 2010
    Date of Patent: December 10, 2013
    Assignee: Syndiant, Inc.
    Inventors: Karl Marion Guttag, Craig Michael Waller, Joshua Abraham Lund, Andrew Ian Russell
  • Publication number: 20130321489
    Abstract: Disclosed herein is a display device capable of displaying an image with two or more gray levels. The display device includes: a voltage division circuit adapted to generate a plurality of voltages using a resistance division circuit; a gamma correction section adapted to gamma-correct the image using the voltages generated at division points of the resistance division circuit; an amplification circuit adapted to amplify a given voltage and supply the amplified voltage to at least one of the division points of the resistance division circuit; and an adjustment section adapted to adjust an amplification factor of the amplification circuit.
    Type: Application
    Filed: May 21, 2013
    Publication date: December 5, 2013
    Applicant: SONY CORPORATION
    Inventor: Teisuke Kishikawa
  • Publication number: 20130321366
    Abstract: To reduce the effect of external light and to improve the accuracy of detecting the location of a touch. In an image-capture period, light emission from a self-light-emitting element is controlled, and imaging data at the time of displaying white on a display screen and imaging data at the time of displaying black on the display screen are output from each sensor pixel. The location of a sensor pixel where a difference between the two pieces of imaging data output from the same sensor pixel is the greatest is detected. Thus, the location of a touch of the object on the display screen is detected with high accuracy. By utilizing a difference between imaging data at the time of reverse display, the effect of external light can be reduced.
    Type: Application
    Filed: May 16, 2013
    Publication date: December 5, 2013
    Inventors: Munehiro KOZUMA, Takayuki Ikeda, Yoshiyuki Kurokawa, Hikaru Tamura, Takeshi Aoki
  • Publication number: 20130314618
    Abstract: In driving a liquid crystal panel of a liquid crystal display device of the present invention, when voltage applied to a gate line G1 is lowered to switch off a pixel P1, voltage applied to a gate line G2 and a gate line G3 rises to switch on a pixel P2 and a pixel P3. In such a case, timing t1 at which the voltage applied to the gate line G1 drops is set to be different from timing t3 at which the voltage applied to the gate lines G2, G3 rises. According to the driving method, ripples each having amplitude Vu1 and Vd1 that are generated in the storage capacitor line CS1 are less likely to be cancel out and attenuated. This improves display quality.
    Type: Application
    Filed: February 1, 2012
    Publication date: November 28, 2013
    Applicant: SHARP KABUSHIKI KAISHA
    Inventor: Ryo Yamakawa
  • Publication number: 20130314395
    Abstract: An image display system includes a data driving circuit and a timing controller. The data driving circuit outputs multiple data driving signals to provide data of an image signal to multiple pixels on a pixel array. The timing controller obtains original pixel values of the pixels according to the image signal, adjusts the original pixel value(s) of one or more pixel(s) according to a predetermined algorithm to generate adjusted pixel value(s), and generates the data driving signals according to the original pixel values and the adjusted pixel value(s). Based on the predetermined algorithm, an original pixel value of a pixel is adjusted according to a difference between the original pixel value of the pixel and an original pixel value of an adjacent pixel.
    Type: Application
    Filed: May 21, 2013
    Publication date: November 28, 2013
    Applicant: InnoLux Corporation
    Inventors: Bo-Chin TSUEI, Yao-Lien HSIEH, Mao-Nan LEE, Chin- Yi TU
  • Publication number: 20130314454
    Abstract: Selective dimming in a light emitting display device to reduce power consumption. The display device includes a display panel that includes a plurality of light emitting pixels. An image processor is configured to divide an image frame into a plurality of regions and to reduce pixel intensity levels in at least one region of the plurality of regions to generate an adjusted image frame. The at least one region corresponds to a background of the image frame. A display driver converts data for the adjusted image frame into control signals for controlling brightness of the light emitting pixels. The display device may be, for example, an organic light emitting diode (OLED) display device or other type of display device that includes light emitting pixels.
    Type: Application
    Filed: May 9, 2013
    Publication date: November 28, 2013
    Applicant: iWatt Inc.
    Inventors: Xuecheng Jin, Gyan Tiwary
  • Patent number: 8593445
    Abstract: A display apparatus employs a pixel array section including pixel circuits forming a matrix, signal lines as columns, scan lines as rows and power-supply lines, and driving sections. The driving sections are a signal selector, a write scanner and a drive scanner. The signal selector provides an electric potential representing a gradation or a predetermined reference electric potential. The write scanner provides a control signal. The drive scanner provides a power-supply voltage changing the electric potential from high to low. The drive scanner drives adjacent power-supply lines as a group. The number of lines as a group is determined in advance. The drive scanner switches a power-supply voltage from high to low and vice versa, and applies the voltage to groups by shifting the phase from group to group. The voltage is supplied to a group at the same phase and switched the electric potential.
    Type: Grant
    Filed: April 30, 2009
    Date of Patent: November 26, 2013
    Assignee: Sony Corporation
    Inventors: Tetsuro Yamamoto, Katsuhide Uchino, Naobumi Toyomura
  • Patent number: 8582052
    Abstract: Backlit LCD displays are becoming commonplace within many vehicle applications. The unique advantage of this invention is that it optimizes system power savings for display of low dynamic range (LDR) images by dynamically controlling spatially adjustable backlighting. This is accomplishes through use of a control technique that takes into account the sequential nature of the video display process.
    Type: Grant
    Filed: August 22, 2008
    Date of Patent: November 12, 2013
    Assignee: Gentex Corporation
    Inventor: Harold C. Ockerse
  • Patent number: 8575530
    Abstract: A photosensitive circuit is provided. The photosensitive circuit is adapted to a pixel in a pixel array. The photosensitive circuit includes a display element for generating light, transmitting light, or reflecting light, a control circuit coupled to the display element for controlling light intensity of the display element according to a data line and a gate line, and a photosensitive element coupled between the gate line and a read line for generating current at the read line to sense the position of an object according to a reflected light or a shadow from ambient light when light from the display element is reflected by an object or ambient light is shadowed by the object. The control terminal of the photosensitive element is connected to another gate line.
    Type: Grant
    Filed: December 28, 2010
    Date of Patent: November 5, 2013
    Assignee: Industrial Technology Research Institute
    Inventors: Issac Wing-Tak Chan, Chen-Pang Kung
  • Patent number: 8576148
    Abstract: An optical device suitable for forming a pixel in a video display. The optical device includes a first layer having a first refractive index; a second layer over the first layer, the second layer having a second refractive index less than the first refractive index; and a third layer over the second layer, the third layer having a third refractive index larger than the second refractive index; and a fourth layer that is at least partially optically absorptive, wherein the optical stack and the fourth layer are a first distance from one another when the device is in a first state and are a second distance from one another when the device is in a second state, the first distance different from the second distance.
    Type: Grant
    Filed: November 30, 2011
    Date of Patent: November 5, 2013
    Assignee: QUALCOMM MEMS Technologies, Inc.
    Inventor: Gang Xu