Temporal Processing (e.g., Pulse Width Variation Over Time Patents (Class 345/691)
  • Publication number: 20140139461
    Abstract: A display unit includes: an image display panel; a backlight section disposed on a back surface of the image display panel, and including a light guide member and a polymer dispersed liquid crystal panel; a light source emitting light, the light being allowed to enter the light guide member of the backlight section; a polymer dispersed liquid crystal panel drive section driving the polymer dispersed liquid crystal panel of the backlight section in synchronization with writing of an image displayed on the image display panel to control a location that scatters light incident on the light guide member on the polymer dispersed liquid crystal panel; and a light source drive section allowing the light source to blink in synchronization with a period in which light is scattered by the polymer dispersed liquid crystal panel.
    Type: Application
    Filed: November 8, 2013
    Publication date: May 22, 2014
    Applicant: SONY CORPORATION
    Inventors: Norimasa Furukawa, Naoki Ikawa, Ichiro Murakami, Kentaro Okuyama, Akira Ebisui
  • Publication number: 20140139569
    Abstract: A driving method of a display device having a driving transistor and a display element, one source/drain region of the driving transistor connected to a power supply part, the other source/drain region connected to an anode electrode provided in the display element, the method includes the steps of: setting a potential of the anode electrode by applying a predetermined intermediate voltage to the anode electrode so that a potential difference between the anode electrode of the display element and a cathode electrode at the other end of the display element does not exceed a threshold voltage of the display element; and then holding the driving transistor in OFF-state while a drive voltage is applied from the power supply part to one source/drain region of the driving transistor.
    Type: Application
    Filed: January 28, 2014
    Publication date: May 22, 2014
    Applicant: SONY CORPORATION
    Inventors: Junichi Yamashita, Katsuhide Uchino
  • Publication number: 20140139566
    Abstract: A display device includes a display panel, the display panel including a plurality of pixels that, during one frame, receive a first voltage transmitted through a data line and a second voltage having a higher level than the first voltage, receive and store a third voltage of a first image data signal corresponding to a current frame, and emit light by driving current for a fourth voltage corresponding to a second image data signal corresponding to a previous frame, wherein, of one frame, a first period for storing the third voltage and a second period for emitting light by the driving current for the fourth voltage overlap each other.
    Type: Application
    Filed: April 24, 2013
    Publication date: May 22, 2014
    Inventor: Sang-Myeon HAN
  • Publication number: 20140139565
    Abstract: A display device includes a plurality of pixels, a scan driver sequentially applying a scan signal to a plurality of scan lines, a data driver applying a data signal corresponding to the scan signal to a plurality of data lines, and a signal controller calculating an image parameter from an image signal, and generating and transmitting one of a driving control signal for short period light emitting and a driving control signal for long period light emitting to the scan driver and the data driver by using the image parameter. The driving control signal for short period light emitting is a signal controlling a light emitting period in which a plurality of pixels emit light during one frame with a first period. The driving control signal for long period light emitting is a signal controlling the light emitting period with a second period that is longer than the first period.
    Type: Application
    Filed: March 4, 2013
    Publication date: May 22, 2014
    Inventor: Seung-Rock CHOI
  • Publication number: 20140139567
    Abstract: A system determines a time period used for controlling a backlight and other processing device power consumption related characteristics to more closely reflect user intent determined in response to an operation state of an application, for the system determines the operation state based on, activity of an application in requesting transmission and reception of data, display screen update and completion of presentation of a view configuration (display area) The system reduces inadvertent turning off of a backlight and other device power consumption features.
    Type: Application
    Filed: November 18, 2013
    Publication date: May 22, 2014
    Applicant: Samsung Electronics Co., Ltd.
    Inventor: Yong-Joon JEON
  • Patent number: 8730280
    Abstract: A display device includes a color converter, a timing controller, and a display panel. The color converter converts R, G, and B data into R?, G?, B?, and W? data. The R?, G?, B?, and W? data includes first component data and second component data. The timing controller provides the first component data to a data driver during a first driving time and provides the second component data to the data driver during a second driving time. The data driver provides gray level display voltages corresponding to the first component data and the second component data to a data line, and the display panel displays the R?, G?, B?, and W? data in response to the gray level display voltage.
    Type: Grant
    Filed: November 12, 2012
    Date of Patent: May 20, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Si-Duk Sung, Baek-Woon Lee
  • Patent number: 8731406
    Abstract: For use in a visible light communication (VLC) network, a method for generating high resolution visibility frames for visibility or dimming support. The method includes determining a required visibility for the high resolution frames. The method also includes generating a pattern that meets the determined required visibility, the pattern having a first quantity of first low resolution frames and a second quantity of second low resolution frames. The method further includes transmitting the pattern to achieve the required high resolution frames.
    Type: Grant
    Filed: April 26, 2010
    Date of Patent: May 20, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Sridhar Rajagopal, Farooq Khan
  • Patent number: 8730281
    Abstract: The invention provides an image display device that has an especially satisfactory display quality for animated images, and sufficiently suppresses the irregularities of display quality among pixels. The image display device includes a light emitting drive means that drives a light emitting means, based on an analog display signal inputted to the pixels, and a light emitting control switch for controlling a light-on or light-off of the light emitting means on one end of the light emitting drive means in each pixel.
    Type: Grant
    Filed: July 15, 2013
    Date of Patent: May 20, 2014
    Assignees: Japan Display Inc., Panasonic Liquid Crystal Display Co., Ltd.
    Inventors: Hajime Akimoto, Yoshirou Mikami, Kiyoshige Kinugawa, Shigeyuki Nishitani, Takeo Shiba
  • Patent number: 8730391
    Abstract: Determining video content type of a video displayed on a LCD and triggering adjustment in drive power of the LCD based on the video content type. The video content type indicates relative content motion of the video. A video content type detection module is one or combination of a software and a hardware and directs the LCD to be driven relative slower or faster based upon video content. The module independently or in conjunction with another module identifies an active window from a plurality of windows corresponding to a plurality of applications running on the host device and sets the drive power of the LCD based on speed of a video displayed on the active window. The module may also adapt LCD drive power based upon user input and/or remaining battery life.
    Type: Grant
    Filed: May 22, 2012
    Date of Patent: May 20, 2014
    Assignee: Broadcom Corporation
    Inventors: Jeyhan Karaoguz, James D. Bennett
  • Publication number: 20140132647
    Abstract: Disclosed herein is a display apparatus including a pixel array and a driver, the pixel array including rows of scanning lines, rows of feeding lines, columns of signal lines, and a matrix of pixels disposed at the crossings of the scanning lines and the signal lines, the driver including a write scanner for supplying a control signal successively to the scanning lines, a power supply scanner for switching each of the feeding lines between a high potential, a low potential, and an intermediate potential between the high potential and the low potential, and a signal selector for supplying a video signal, which alternately switches between a signal potential and a reference potential, to each of the signal lines.
    Type: Application
    Filed: January 16, 2014
    Publication date: May 15, 2014
    Applicant: SONY CORPORATION
    Inventors: Junichi Yamashita, Katsuhide Uchino
  • Publication number: 20140132646
    Abstract: A display device includes a display unit having display elements arrayed in rows and columns. The display elements each include a current-driven light emitting unit and a drive circuit for driving the light emitting unit. A power supply unit supplies a drive voltage for driving the display elements to power supply lines corresponding to the rows of display elements. A signal output unit supplies video signal voltages to data lines corresponding to the columns of the display elements. A control unit detects maximum grayscale values of input signals corresponding to the display elements arranged in the rows, and accordingly controls duty ratios of the drive voltage supplied to the power supply lines corresponding to the rows of the display elements. The control unit also controls values of video signals corresponding to the display elements in each row.
    Type: Application
    Filed: November 6, 2013
    Publication date: May 15, 2014
    Applicant: Sony Corporation
    Inventor: Takeshi Aoki
  • Publication number: 20140132648
    Abstract: In the present invention, there is provided a display panel driving method of the type wherein the total light emitting period length within a one-field period is controlled to variably control the peak luminance level of a display panel, including the step of: variably controlling, where the one-field period has N light emitting periods, N being equal to or greater than 2, the end timing of the ith light emitting period and the start timing of the i+1th light emitting period so as to satisfy the total light emitting period length within the one-field period, i being an odd number which satisfies 1?i?N?1 while i+1 satisfies 2?i+1?N.
    Type: Application
    Filed: January 23, 2014
    Publication date: May 15, 2014
    Applicant: Sony Corporation
    Inventor: Mitsuru Asano
  • Patent number: 8723901
    Abstract: A liquid crystal display (LCD) comprises a gate line formed on a first insulation substrate and extending in a first direction; a data line insulated from the gate line and extending in a second direction; a pixel electrode comprising a first sub-pixel electrode connected to the gate line and the data line and a second sub-pixel electrode connected to the gate line and the data line; first and second voltage lines receiving a pair of voltages having opposite phases, from an external source; and first and second storage lines respectively overlapping the first and second sub-pixel electrodes and respectively receiving first and second storage voltages whose phases are inverted at a cycle of at least one frame, wherein the first storage line is connected to the first and second voltage lines by a first switching unit, the second storage line is connected to the first and second voltage lines by a second switching unit, and the first and second switching units apply the pair of voltages to the first and second s
    Type: Grant
    Filed: June 27, 2008
    Date of Patent: May 13, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventor: Dong-gyu Kim
  • Patent number: 8723899
    Abstract: A liquid crystal display and a method of driving the same are disclosed. The liquid crystal display includes a liquid crystal display panel on which data lines and gate lines cross each other, a data driving circuit that converts data of an input image into positive and negative analog data voltages and outputs the data voltages to the data lines, a gate driving circuit sequentially supplying a gate pulse synchronized with the data voltages to the gate lines, and a timing controller that supplies the input image data to the data driving circuit, controls an operation timing of each of the data driving circuit and the gate driving circuit, compares the input image data with a previously stored reference data pattern, and decides whether or not the input image data is the same as the reference data pattern.
    Type: Grant
    Filed: May 27, 2011
    Date of Patent: May 13, 2014
    Assignee: LG Display Co., Ltd.
    Inventors: Jongwoo Kim, Hyuntaek Nam, Suhyuk Jang, Myungkook Moon
  • Patent number: 8723900
    Abstract: A display device includes: a light emission control part which allows a light source to emit the light having one of the plural different main wavelengths in each of plural sub frames; a display panel which controls the transmission of light in each pixel; and a display control part which controls the display panel corresponding to a gray level value with respect to the each pixel, wherein the light emitting control part performs the light emission of light having a first main wavelength in a first sub frame in accordance with a light emission amount weighted based on a time for calculation including a first interval which is a interval between the first sub frame where the first main wavelength is emitted and a second sub frame where the first main wavelength is emitted after the first sub frame.
    Type: Grant
    Filed: May 14, 2012
    Date of Patent: May 13, 2014
    Assignee: Pixtronix, Inc.
    Inventors: Hajime Akimoto, Kenta Kajiyama
  • Publication number: 20140125717
    Abstract: A display apparatus includes: a pixel array section including a row of first and second scanning lines, a column of signal lines, and pixels in a matrix, each of the pixels disposed at an intersection of both of the lines; and a drive section. The drive section performs line progressive scanning on the pixels. The pixel includes a light emitting device, a sampling transistor, a driving transistor, a switching transistor, and a holding capacitor. The sampling transistor samples a video signal on the signal line to hold the signal potential in the holding capacitor, the driving transistor makes the light emitting device conductive to be in a luminous state in accordance with the held signal potential, and the switching transistor becomes ON in accordance with the control signal supplied in advance of the sampling of the video signal to change the light emitting device to a non-luminous state.
    Type: Application
    Filed: January 7, 2014
    Publication date: May 8, 2014
    Applicant: Sony Corporation
    Inventors: Katsuhide Uchino, Tetsuro Yamamoto
  • Publication number: 20140125716
    Abstract: A display control drive device sequentially reads display data from a display memory in which the display data is stored, produces three primary color image signals that are applied to pixel locations in a dot-matrix color display device, and transmits the signals through a common external output terminal in a time-sharing manner. The display control drive device produces control signals applied to selection switching elements in the display device and that selectively apply an input image signal to any of three source lines. The display control drive device includes: a unit that determines one horizontal period based on a clock received from outside synchronously with display data; and a signal production circuit that produces and transmits the control signals, applied to the selection switching elements, so that the control signals will have a pulse duration equivalent to a time calculated by trisecting one horizontal period.
    Type: Application
    Filed: December 9, 2013
    Publication date: May 8, 2014
    Applicant: Renesas Electronics Corporation
    Inventors: Yasuhito KUROKAWA, Kunihiko TANI
  • Publication number: 20140125715
    Abstract: An image output apparatus includes a light emitting unit, a power supplying unit, and a control unit. The light emitting unit is configured to emit a laser beam. The power supplying unit is configured to supply power to the light emitting unit at a predetermined voltage. The control unit is configured to control the power supplying unit to supply the power to the light emitting unit in a predetermined period at the voltage associated with a peak light emission amount of the light emitting unit in image data for the predetermined period.
    Type: Application
    Filed: October 25, 2013
    Publication date: May 8, 2014
    Applicant: Sony Corporation
    Inventors: Tatsuki Nishino, Susumu Seino
  • Publication number: 20140125714
    Abstract: A display device includes a pixel unit including a plurality of pixels that have light-emitting time periods adjusted in response to light-emitting control signals, and a brightness control unit that adjusts a duty ratio of the light-emitting control signals and setting gamma and that converts image data according to a brightness mode.
    Type: Application
    Filed: March 11, 2013
    Publication date: May 8, 2014
    Inventor: Si-Baek PYO
  • Patent number: 8717394
    Abstract: A method and system providing boundary dispersion to pixel values displayed on a binary spatial light modulator to reduce temporal contouring artifacts. Pixel code values are offset from a nominal value when displayed on the SLM to disperse a large bit transition for a pulse width modulation (PWM) system. The offset value varies as a function of the pixel digital code, the pixel spatial location on the screen, and pixel temporal location in time. The set of offsets applied to pixels is varied over a repeating sequence of 2 displayed frames.
    Type: Grant
    Filed: July 21, 2008
    Date of Patent: May 6, 2014
    Assignee: Texas Instruments Incorporated
    Inventors: Daniel J. Morgan, Gregory J. Hewlett, Peter F. vanKessel
  • Publication number: 20140118427
    Abstract: This disclosure provides systems, methods and apparatus, including computer programs encoded on computer storage media, for displaying images using multiple frame-specific contributing color (FSCC). In one aspect, an input is configured to receive image data corresponding to a current image frame. Contributing color selection logic is configured, based on received image data, to obtain multiple FSCCs for use in conjunction with a set of frame-independent contributing colors (FICCs) to generate the current image frame on a display. In addition, subframe generation logic is configured to process the received image data for the current image frame to generate at least two subframes for each of the FICCs and the obtained multiple FSCCs such that an output by the display of the generated subframes results in the display of the current image frame.
    Type: Application
    Filed: October 28, 2013
    Publication date: May 1, 2014
    Applicant: Pixtronix, Inc.
    Inventors: Edward Buckley, Fahri Yaras
  • Publication number: 20140118426
    Abstract: A display device includes: a plurality of pixels; a degradation compensator for using a temperature weight value for a reference temperature, a luminance weight value for a reference luminance, and a material weight value for a reference material, for calculating a reference using time when a degradation rate of the pixels is changed to a reference degradation rate of a reference degradation curve, and for generating a control variable according to the reference using time; and a power supply for controlling a voltage difference between a first power source voltage for supplying a driving current to the pixels and a second power source voltage according to the control variable.
    Type: Application
    Filed: February 28, 2013
    Publication date: May 1, 2014
    Applicant: Samsung Display Co., Ltd.
    Inventors: Byung-Ki CHUN, Hak-Sun KIM, Yong-Seok CHOI, Joo-Hyung LEE, Jong-Woong PARK, Bo-Young AN, Chang-Ho HYUN
  • Patent number: 8711078
    Abstract: A liquid crystal display (“LCD”) includes: a liquid crystal panel, a timing controller which receives previous image data and current image data, corrects or does not correct the current image data according to a reference bit of conversion image data generated using the previous image data, and outputs a display image signal to the liquid crystal panel, and a data driver which receives the display image signal and applies a data voltage corresponding to the display image signal to the liquid crystal panel.
    Type: Grant
    Filed: March 11, 2013
    Date of Patent: April 29, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Joo-Hyung Lee, Sang-Jin Pak, Young-Ok Cha
  • Patent number: 8711136
    Abstract: The present invention provides a voltage transfer function, a luminance transfer function, and a transfer factors (for example, efficiency, critical point, and slope) between these two functions, derives the correlation (based on the condition change in all cases) between an input grayscale voltage and output luminance, and calibrates the input grayscale voltage by a difference between measurement luminance and target luminance using the transfer functions. Therefore, the present invention can respond to change in conditions for all cases, and increase the accuracy, easiness, and generalization of calibration compared to the existing calibration scheme that relies on the lookup table by checking the actual measurement data and readjusting the transfer factors in each calibration stage. Moreover, the present invention can further increase the manufacturing yield by an average of 35% than the existing yield, significantly saving the manufacturing cost.
    Type: Grant
    Filed: February 6, 2012
    Date of Patent: April 29, 2014
    Inventor: Jaeyeol Park
  • Patent number: 8711084
    Abstract: A device and a method for controlling brightness of an OLED display device are disclosed. The method for controlling brightness of an OLED display device includes the steps of forwarding external brightness control information in a PWM signal or a brightness control data, selecting and normalizing either the PWM signal or the brightness control data into an external brightness adjusting gain, analyzing a received video data to detect a peak brightness value, multiplying the peak brightness value by the external brightness adjusting gain to produce a final peak brightness value, adjusting the R/G/B maximum gamma voltage values according to the final peak brightness value, and generating R/G/B reference gamma voltage sets by using the R/G/B maximum gamma voltage values adjusted thus.
    Type: Grant
    Filed: September 21, 2010
    Date of Patent: April 29, 2014
    Assignee: LG Display Co., Ltd.
    Inventors: Hyun Jae Lee, Jin-Hyoung Kim, Jae-Sung Son
  • Publication number: 20140111566
    Abstract: An organic light emitting diode display device and a driving method thereof are disclosed. The organic light emitting diode display device according to an embodiment of the invention comprises a display panel including a plurality of data lines, a plurality of gate line pairs crossing the data lines, and a plurality of light emitting cells which include an organic light emitting diode device, first and second cell driving circuits for alternately driving the organic light emitting diode device; a data voltage generator supplying a data voltage of a first polarity to the data lines; a compensation voltage generator supplying a compensation voltage of a second polarity to the data lines; and a scan driver for sequentially supplying scan pulses to the gate line pairs, wherein the first and second cell driving circuits are alternately supplied with the data voltage and the compensation voltage in response to the scan pulses to alternately driven the organic light.
    Type: Application
    Filed: January 2, 2014
    Publication date: April 24, 2014
    Applicant: LG DISPLAY CO., LTD.
    Inventors: Injae CHUNG, Kiyong KIM, Chulsang JANG, Insu JOO, Woojin NAM
  • Publication number: 20140111565
    Abstract: A display driving circuit (104) comprises a table generating unit (64) which generates a table necessary for driving according to a color representation instruction, based on pallet data which is a driving condition of a display device corresponding to the color representation and according to a time-sequential color representation instruction which is instructed in advance, a table storage unit (62) which stores these tables, and a pallet data setting unit (114) which refers to these tables, obtains pallet data corresponding to each lighting cycle at a lighting timing delayed with a delay period for each channel unit number stored in a delay period data storage unit (40), assigns the obtained pallet data while sequentially switching the pallet data according to switching of the lighting cycle, and sets a driving condition of each display device of a display channel unit.
    Type: Application
    Filed: December 23, 2013
    Publication date: April 24, 2014
    Inventors: Takuya TAKEUCHI, Masanori MIYAO
  • Publication number: 20140111564
    Abstract: A timing controller for a display apparatus includes a dithering unit outputting a first signal in which bit widths of image signals are reduced, an image pattern detector detecting an image pattern of the image signals and outputting a dithering off signal corresponding to the detected image pattern, a dithering selector receiving the first signal and converts the first signal to a second signal in response to the dithering off signal, and a response time compensator generating a present image signal from the second signal and compensates a liquid crystal response time in accordance with a difference between the present image signal and a first previous image signal to output a data signal.
    Type: Application
    Filed: April 24, 2013
    Publication date: April 24, 2014
    Applicant: Samsung Display Co., Ltd.
    Inventors: ByungKil JEON, Yong-Bum Kim, Jaehyoung Park, Dong-Hyun Yeo, Suhyun Jeong
  • Publication number: 20140111563
    Abstract: A stereoscopic image display device includes a display panel including a plurality of pixels, a scan driver, a gate driver, a data driver, and a controller, and a sub-frame includes a first period during which a data voltage according to an image data signal emitted in the previous sub-frame is initialized, a second period during which a data voltage according to the image data signal written in the previous sub-frame is transmitted and a threshold voltage of a driving transistor of each pixel is compensated, a third period during which a data voltage according to a next sub-frame's data signal is sequentially written to the respective pixels, and a fourth period that is concurrent with and equal to or longer than the third period and during which the respective pixels concurrently emit light corresponding to the data voltage according to the image data signal written in the previous sub-frame.
    Type: Application
    Filed: February 12, 2013
    Publication date: April 24, 2014
    Applicant: SAMSUNG DISPLAY CO., LTD.
    Inventors: Young-In Hwang, Hae-Yeon Lee
  • Publication number: 20140104326
    Abstract: An organic light emitting display device includes a scan driving unit that supplies scan signals to scan lines, a data conversion unit that receives a first data signal for displaying an image and converts the first data signal to create a second data signal; a data driving unit that supplies the first data signal and the second data signal to data lines; a pixel unit including pixels positioned at intersections of the scan lines with the data lines, the pixels emitting light having a luminance corresponding to the first data signal during an image display subperiod and having a luminance corresponding to the second data signal during a compensation subperiod; and an image selection unit that transmits an image corresponding to the first data signal and blocking an image corresponding to the second data signal.
    Type: Application
    Filed: January 29, 2013
    Publication date: April 17, 2014
    Inventor: Hyun-Suk ROH
  • Publication number: 20140104327
    Abstract: A display system may include a system board configured to compare image signals of a current and previous frame and configured to output the image signals of the current frame and a comparison result; a display panel configured to receive data signals in response to gate signals and configured to include pixels for displaying images corresponding to the data signals; a timing controller configured to output image signals and control signals; a gate driving unit configured to provide the gate signals to the pixels in response to the control signals; and/or a data driving unit configured to store the image signals provided from the timing controller and configured to convert the image signals into the data signals in response to the control signals, the data signals being provided to the pixels.
    Type: Application
    Filed: October 7, 2013
    Publication date: April 17, 2014
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Sungchul KIM, Young Min KIM, Sangjoon HYUNG, Seokhee HWANG
  • Publication number: 20140104328
    Abstract: An organic light emitting diode (OLED) display device is disclosed. In one aspect, the OLED display device includes a driver that receives image data and generates a data signal and a scan signal corresponding to the image data, and an organic light emitting display panel that receives the data signal and the scan signal and displays an image corresponding to the image data, wherein the scan signal includes a scan-on period and a scan-off period, and when gray scales of the image data increase, the length of the scan-on period increases.
    Type: Application
    Filed: October 15, 2013
    Publication date: April 17, 2014
    Applicant: Samsung Display Co., Ltd.
    Inventors: Mi Hae Kim, Ki Myeong Eom
  • Patent number: 8698851
    Abstract: A display apparatus includes a first pixel including a first pixel electrode connected to first data and gate lines, a second pixel including a second pixel electrode connected to a second data and gate lines, a third pixel including a third pixel electrode connected to a third data line and the first gate line, a fourth pixel including a fourth pixel electrode connected to a fourth data line and the second gate line, a fifth pixel including a fifth pixel electrode connected to a fifth data line and the second gate line, a sixth pixel including a sixth pixel electrode connected to a sixth data line and the first gate line, a seventh pixel including a seventh pixel electrode connected to a seventh data line and the second gate line, and an eighth pixel including an eighth pixel electrode connected to an eighth data line and the first gate line.
    Type: Grant
    Filed: January 28, 2011
    Date of Patent: April 15, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Hoi-Sik Moon, Duc-Han Cho
  • Patent number: 8698856
    Abstract: Embodiments of the invention include a method, device and/or system for spoke recovery, including by receiving input pixel data comprising a plurality of input sub-pixel data components representing respective sub-pixel colors, adjusting input sub-pixel data components based on a value of the sub-pixel data component and at least a value of a second input sub-pixel data component in the input pixel data, thereby to produce modified pixel data, and controlling a spatial light modulator based on the modified pixel data, thereby producing a color image based on said modified pixel data. A system and device are disclosed to perform the method.
    Type: Grant
    Filed: January 11, 2010
    Date of Patent: April 15, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Shmuel Roth, Moshe Ben-Chorin
  • Patent number: 8698733
    Abstract: Disclosed is an electrophoretic display and a method for driving the electrophoretic display. The method for driving the electrophoretic display, which includes a first electrode, a second electrode, and an electrophoretic layer including electrophoretic particles disposed in a plurality of pixels receiving the voltage for driving from the first electrode and the second electrode and provided between the first electrode and the second electrode includes applying a reset voltage to the pixels, applying a reset compensation voltage including reversed polarity to the reset voltage to the pixels, applying an image display voltage including the same or different polarity during a predetermined time between the neighboring pixels, and applying an image display compensation voltage including reversed polarity to the image display voltage to the pixels during a predetermined time.
    Type: Grant
    Filed: June 6, 2008
    Date of Patent: April 15, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Sung-Jin Hong, Il-Pyung Lee, Jae-Byung Park, Yong-Woo Lee, Sung-Hoon Yang
  • Patent number: 8698857
    Abstract: The present invention aims to provide a driving control circuit of a display device that is capable of preventing an unnatural black screen. To this end, the driving control circuit is configured to include a plurality of TMICs, each of which is merged with a timing controller and a source driver, and the time controller is configured to adjust end locations of the horizontal blank intervals of data enable signals to match the end locations outputted from TMICs to an end location of a horizontal blank interval of a data enable signal outputted from another TMIC, and, when a gate output enable signal is supplied, perform adjustment so as to indicate a rising edge of the gate output enable signal before the data latch enable signal having the highest frequency is supplied.
    Type: Grant
    Filed: December 22, 2011
    Date of Patent: April 15, 2014
    Assignee: Silicon Works Co., Ltd.
    Inventors: Young Ki Kim, Hye Lan Kim, Na Ra Hong, Joon Ho Na
  • Publication number: 20140092149
    Abstract: A pixel of a display apparatus includes at least a first transistor and at least a second transistor. A cell of transparent fluid including particles charged to have different polarities from each other is arranged between a pixel electrode and a common electrode. The first and second transistors are connected to the pixel electrode. The pixel is drivable according to pulse amplitude modulation (PAM) and pulse width modulation (PWM) such that a frame of an image is displayable using a single field.
    Type: Application
    Filed: December 3, 2013
    Publication date: April 3, 2014
    Applicant: Samsung Electronics Co., Ltd.
    Inventor: Jung-woo KIM
  • Patent number: 8687029
    Abstract: The present invention discloses a method for reducing ripple noise on the image of a display. The steps of the method include: (a) providing a first potential signal to a backlight module by an inverter; (b) resetting the inverter; (c) providing a second potential signal to the backlight by the inverter, wherein the phase difference between the first potential signal and the second potential signal is 180 degrees; (d) resetting again the inverter; and (e) repeating the steps (a) to (d) Consequently, the ripple noise present on the display would be effectively reduced by the alteration of the bright areas and dark areas on the display panel in conjunction with the persistence of vision of the user's eyes.
    Type: Grant
    Filed: December 30, 2010
    Date of Patent: April 1, 2014
    Assignee: Chunghwa Picture Tubes, Ltd.
    Inventor: Chang-Xin Huang
  • Publication number: 20140085356
    Abstract: According to one embodiment, a liquid crystal display device includes an array substrate, a counter substrate, a liquid crystal layer and a driving unit. The driving unit is configured to perform polarity inversion driving by applying, to the pixel electrode, positive and negative video signals. When applying the video signals to the pixel electrode, the driving unit superposes a correction signal corresponding to a polarity inversion frequency and the gray level on the video signals in advance.
    Type: Application
    Filed: September 20, 2013
    Publication date: March 27, 2014
    Applicant: Japan Display Inc.
    Inventors: Yukio TANAKA, Toshiyuki HIGANO, Kenji NAKAO, Hirofumi WAKEMOTO
  • Publication number: 20140085358
    Abstract: A drive method for an electrophoretic display device that has an electrophoretic device composed of a suspension fluid containing electrophoretic particles disposed between a common electrode and pixel electrodes is provided. No holding electrode is necessary. A driver drives the electrophoretic device by applying voltage between the common electrode and the pixel electrodes, and a controller controls the driver. The method involves redrawing the display to change the displayed image by applying to the common electrode pulse trains of different widths, each composed of a first potential and a second potential, at different times, based on certain conditions.
    Type: Application
    Filed: November 26, 2013
    Publication date: March 27, 2014
    Applicant: Seiko Epson Corporation
    Inventor: Katsutoyo Inoue
  • Publication number: 20140085355
    Abstract: An electro-phoretic display and a method for driving the same are provided, where the electro-phoretic display has a plurality of pixel units. The method includes: setting a plurality of particle tightening time periods and a plurality of gray level displaying time periods for the pixel units respectively, where each of the gray level displaying time periods is arranged after each corresponding particle tightening time period; providing a plurality of particle tightening voltages to the pixel units for tightening the particles of the pixel units respectively during the particle tightening time periods, and providing a plurality of display driving voltages to the pixel units during the gray level displaying time periods. The particle tightening time periods and/or the gray level displaying time periods are determined by a plurality of display gray level data corresponding to the pixel units.
    Type: Application
    Filed: June 26, 2013
    Publication date: March 27, 2014
    Inventors: Ming-Jen Chang, Jo-Cheng Huang, Shao-Wei Su, Chun-An Wei, Yao-Jen Hsieh
  • Publication number: 20140085359
    Abstract: A light emitting device display, its pixel circuit and its driving technique is provided. The pixel includes a light emitting device and a plurality of transistors. A bias current and programming voltage data are provided to the pixel circuit in accordance with a driving scheme so that the current through the driving transistor to the light emitting device is adjusted.
    Type: Application
    Filed: December 2, 2013
    Publication date: March 27, 2014
    Applicant: Ignis Innovation Inc.
    Inventors: Arokia Nathan, Gholamreza Chaji, Stefan Alexander
  • Publication number: 20140085357
    Abstract: A source driver for driving at least one sub-pixel is disclosed, in which the source driver includes a gamma voltage generator and a digital to analog converter. The gamma voltage generator generates a plurality of gamma voltages, in which the gamma voltage generator includes a first gamma resistor string and an operation circuit. The first gamma resistor string includes a plurality of resistors electrically connected serially for dividing a first gamma reference voltage and a second gamma reference voltage into the gamma voltages. The operation circuit optionally adds increments to the gamma voltages according to a timing control signal, wherein the increments are the same when the gamma voltages are added. The digital to analog converter selecting one of the gamma voltages generated by the operation circuit as a driving voltage based on received digital pixel data.
    Type: Application
    Filed: November 19, 2013
    Publication date: March 27, 2014
    Applicant: HIMAX TECHNOLOGIES LIMITED
    Inventors: Meng-Tse Weng, Chuan-Che Lee, Chin-Tien Chang, Chien-Ru Chen
  • Publication number: 20140085354
    Abstract: A display device includes a display panel, a timing controller, a data driver, a gate driver and a backlight unit. The gate driver sequentially outputs gate signals to gate lines. The backlight unit performs an on-operation during a high section of a backlight control signal and an off-operation during a low section of the backlight control signal. The gate signals includes first gate signals that are output during the high section of the backlight control signal and have a first pulse width and second gate signals that are output during the low section of the backlight control signal and have a second pulse width greater than the first pulse width.
    Type: Application
    Filed: February 1, 2013
    Publication date: March 27, 2014
    Applicant: SAMSUNG DISPLAY CO., LTD.
    Inventors: Jun-Ho Hwang, Jang-Hoon Kwak, Seung-Woon Shin, Yong-jin Shin, Jang-Mi Lee, Kihyun Pyun
  • Patent number: 8681193
    Abstract: A driving method for stereoscopic display is provided, and the method comprises: obtaining a distance between a viewer and the stereoscopic display; obtaining an offset amount for sub-pixels of different colors displaying the same image point for the different eyes based on the above distance; obtaining a transformed transmission sequence of 2D image sub-pixel signals based on the offset amount, in which the sub-pixels of different colors for displaying the same image point for the different eyes are offset by the offset amount on the stereoscopic display; and outputting the 2D image sub-pixel signals according to the transformed transmission sequence so as to display sub-images of different colors for the different eyes.
    Type: Grant
    Filed: September 8, 2011
    Date of Patent: March 25, 2014
    Assignees: Boe Technology Group Co., Ltd., Hefei Xinsheng Optoelectronics Technology Co., Ltd.
    Inventor: Xiujian Zhu
  • Publication number: 20140078195
    Abstract: A liquid crystal display includes a pixel circuit having a first hold unit, a second hold unit, a transfer control unit and a pixel unit. The first hold unit selectively holds a higher or lower driving voltage which is arbitrarily set between a ground potential and a power-supply voltage, according to a row selection signal from a vertical scanning unit and a logical value of data from a horizontal scanning unit. The second hold unit selectively holds the higher or lower driving voltage held in the first hold unit. The transfer control unit transfers to the second hold unit, the higher or lower driving voltage held in the first hold unit according to a trigger pulse. The pixel unit drives a liquid crystal according to a potential difference between the higher or lower driving voltage held in the second hold unit and a voltage supplied to a common electrode thereof.
    Type: Application
    Filed: September 17, 2013
    Publication date: March 20, 2014
    Applicant: JVC KENWOOD Corporation
    Inventor: Takayuki IWASA
  • Publication number: 20140078196
    Abstract: An object of the invention of the present application is to drive data signal lines accurately by pulse width modulation driving and display gradations accurately. A PWM pattern generating circuit (12) generates 2q sets of PWM patterns associated with combinations of a gradation and the polarity of a gradation voltage. A selector (15) selects one PWM pattern from among the 2p+q PWM patterns, based on gradation data and a pattern set number. A charge and discharge control circuit (16) controls a charge and discharge circuit (17) to apply a charge voltage and a discharge voltage to a data signal line in a switching manner, based on the selected PWM pattern. One correction pulse may be selected for each data signal line from among a plurality of types of generated correction pulses, and a charge voltage may be applied to the data signal line based on the correction pulse.
    Type: Application
    Filed: May 24, 2012
    Publication date: March 20, 2014
    Applicant: SHARP KABUSHIKI KAISHA
    Inventors: Kouji Kumada, Noriyuki Tanaka, Tatsuhiko Suyama
  • Publication number: 20140078194
    Abstract: An autostereoscopic display and a control method thereof are disclosed. The autostereoscopic display includes a display panel displaying 3D image data, a backlight unit providing light to the display panel, a backlight driver which sequentially drives light sources of the backlight unit along a scanning direction of the 3D image data written to the display panel, a switchable 3D element which forms a barrier or a lens for separating optical axes of left eye image data and right eye image data from the 3D image data, and a 3D element driver which electrically controls the switchable 3D element and shifts the barrier or the lens formed in the switchable 3D element.
    Type: Application
    Filed: December 26, 2012
    Publication date: March 20, 2014
    Applicant: LG DISPLAY CO., LTD.
    Inventors: Cheunghwan AN, Hoonki KIM, Bogyun CHUNG
  • Patent number: 8675061
    Abstract: A biocular display system is provided for use with a transmissive micro-LCD display and a biocular lens, where the biocular system includes a relay lens that can transfer a digital image from the transmissive micro-LCD display to a micro-resolution screen surface where a micro-diffusion surface is applied to a single planar transparent substrate that has a smooth surface on a side opposite the micro-diffusion surface, and the micro-diffusion surface has at least some surface features that can diffuse the light passing therethrough at greater than a 60-degree diffusion angle.
    Type: Grant
    Filed: January 31, 2011
    Date of Patent: March 18, 2014
    Inventor: Richard D. Balentine
  • 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