Light-controlling Display Elements Patents (Class 345/84)
  • Patent number: 8000005
    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.
    Type: Grant
    Filed: August 31, 2006
    Date of Patent: August 16, 2011
    Assignee: Prysm, Inc.
    Inventors: David Kindler, Sergey A. Bukesov, Roger A. Hajjar, Amit Jain, David L. Kent, Phillip H. Malyak, Brian Massey, John Ritter, John Uebbing
  • Patent number: 7994702
    Abstract: This specification describes phosphor compositions used in fluorescent layers for scanning beam displays. In general, one aspect of the subject matter described in this specification can be embodied in a display device having a fluorescent layer that absorbs an excitation light at a single wavelength and emits visible light. The fluorescent layer includes a plurality of parallel fluorescent stripes. At least three adjacent fluorescent stripes are made of three different fluorescent materials, which include a first fluorescent material that absorbs the excitation light and emits light of a first color, a second fluorescent material that absorbs the excitation light and emits light of a second color, and a third fluorescent material that absorbs the excitation light and emits light of a third color.
    Type: Grant
    Filed: October 27, 2006
    Date of Patent: August 9, 2011
    Assignee: Prysm, Inc.
    Inventors: Sergey A. Bukesov, Roger A. Hajjar
  • Publication number: 20110187630
    Abstract: An active element array substrate includes a plurality of scan lines, a plurality of data lines, a plurality of pixel transistors and a plurality of pixel electrodes. The data lines are intersected with the scan lines. Each of the pixel transistors is electrically coupled to corresponding one of the scan lines and corresponding one of the data lines respectively, and each of the pixel electrodes is electrically coupled to one of the corresponding pixel transistors respectively. Furthermore, each of the pixel electrodes includes an alloy having nickel and boron.
    Type: Application
    Filed: July 16, 2010
    Publication date: August 4, 2011
    Applicant: E Ink Holdings Inc.
    Inventors: Shi-Fang Chen, Shyh-Liang Lin
  • Patent number: 7990339
    Abstract: A micromirror device, which makes an image display with digital image data, comprises pixel elements each of which makes pulse width modulation for incident light depending on the deflection state of light and which are arranged in the form of a matrix. Each of the pixel elements has a mirror, and at least one memory cell comprising a transistor and a capacitor. In such a micromirror device, the total value of the propagation delay time of a ROW line, which connects all of transistors of memory cells arranged successively in a ROW direction, and the switching time of each transistor is smaller than the driving interval of the ROW line driven in the minimum display duration of the micromirror device.
    Type: Grant
    Filed: December 26, 2007
    Date of Patent: August 2, 2011
    Assignees: Silicon Quest Kabushiki-Kaisha, Olympus Corporation
    Inventors: Kazuma Arai, Fusao Ishii, Yoshihiro Maeda
  • Patent number: 7990605
    Abstract: An illumination device is provided and has a light guide plate, a light source and a light modulator, wherein the light modulator has a pair of transparent substrates a pair of electrodes and a light modulator layer. The light modulator layer includes a first region being changed between a transparent state and a scatterable state depending on intensity of an electric field, and a second region being more transparent than the first region in a scatterable state at an electric field having a certain intensity, the electric field being applied when the first region is changed between the transparent state and the scatterable state, and an occupancy rate of the first region in the light modulator layer is increased with increase in distance from the light source.
    Type: Grant
    Filed: December 22, 2009
    Date of Patent: August 2, 2011
    Assignee: Sony Corporation
    Inventors: Kentaro Okuyama, Harumi Sato
  • Patent number: 7986315
    Abstract: An integrated photonics module includes at least one light source and a MEMS scanner coupled to and held in alignment by an optical frame configured for mounting to a host system. According to some embodiments, the integrated photonics module may include a plurality of light sources and a beam combiner coupled to the optical frame. According to some embodiments, the integrated photonics module includes a selective fold mirror configured to direct at least a portion of emitted light toward the MEMS scanner in a normal direction and pass scanned light through to a field of view. The selective fold mirror may use beam polarization to select beam passing and reflection. The integrated photonics module may include a beam rotator such as a quarter-wave plate to convert the polarization of the emitted light to a different polarization adapted for passage through the fold mirror. The integrated photonics module may include one or more light detectors.
    Type: Grant
    Filed: October 1, 2010
    Date of Patent: July 26, 2011
    Assignee: Microvision, Inc.
    Inventors: Randall B. Sprague, Joshua O. Miller, Margaret K. Brown, Mark O. Freeman, Maarten Niesten, Bin Xue, Christopher A. Wiklof
  • Patent number: 7982690
    Abstract: A micromirror device, which makes an image display with digital image data, comprises pixel elements each of which makes pulse width modulation for incident light depending on the deflection state of light and which are arranged in the form of an array. The array of the pixel elements is composed of B subsets each including pixel elements of Ms (COLUMNs)×Ns (ROWs) (Ms, Ns, and B are natural numbers). Each of the pixel elements has a mirror, and at least one memory cell. The memory cell has a transistor of an input gate capacity Ct[F]. Each memory cell is connected by a ROW line having a wiring resistance R[?], and a wiring capacity C[F]. When a gray scale display of 10 [bits] or more for each color is made with a color sequential display of C0 colors, Ms, Ns, B, Ct, R, C, and C0 have a relationship of R*(Ct+C)<(1.63*10?5*B)/[Co*Ms*Ns*(Ms+1)].
    Type: Grant
    Filed: December 26, 2007
    Date of Patent: July 19, 2011
    Assignees: Silicon Quest Kabushiki-Kaisha, Olympus Corporation
    Inventors: Kazuma Arai, Fusao Ishii, Yoshihiro Maeda
  • Publication number: 20110169721
    Abstract: Methods, apparatuses and program logic in storage media to process media data for quality enhancement. The media data is for rendering at a wireless device. Environmental quantities are accepted from one or more sensors located remote from the wireless device but sufficiently close to be indicative of similar quantities in the device's environment. The sensors at in or connected to a network node. At the network node, the method includes processing the media data using the environmental quantities to generate processed data, and wirelessly sending the processed output to the resource constrained device for rendering, such that the processed output is usable by the resource constrained device to render or to process and render the media data.
    Type: Application
    Filed: March 17, 2011
    Publication date: July 14, 2011
    Inventors: Claus Bauer, Brett G. Crockett, Charles Q. Robinson
  • Publication number: 20110164067
    Abstract: The invention relates to methods and apparatus for forming images on a display utilizing a control matrix to control the movement of MEMS-based light modulators.
    Type: Application
    Filed: January 5, 2010
    Publication date: July 7, 2011
    Applicant: Pixtronix, Inc.
    Inventors: Stephen R. Lewis, Stephen English, Abraham McAllister
  • Publication number: 20110156992
    Abstract: In a display apparatus, a plurality of pixels are arranged in first and second directions, and each pixel includes at least one dot. A plurality of data lines are provided between two adjacent dots while extending in the first direction. A plurality of gate lines are provided between two adjacent dots while extending in the second direction. Among dots arranged in the first direction between an mth data line and an (m+1)th data line, at least one first dot is connected to one of the mth data line and the (m+1)th data line, and at least one second dot is connected to one of an (m?1)th data line and an (m+2)th data line. Accordingly, the display quality of the display apparatus including four dots or an even number of dots is improved.
    Type: Application
    Filed: July 23, 2010
    Publication date: June 30, 2011
    Inventors: SUNGJAE MOON, Donggyu Kim, Seongyoung Lee, Ji-Sun Kim
  • Patent number: 7969384
    Abstract: A micromirror device, which makes an image display with digital image data, comprises pixel elements each of which makes pulse width modulation (PWM) for incident light depending on the deflection state of light and which are arranged in the form of a matrix. Each of the pixel elements has a mirror, at least one memory cell comprising a transistor and a capacitor, and an electrode connected to each transistor. Memory cells arranged successively in a ROW direction are connected by a ROW line. The image data is loaded at a time interval during which the voltage of the electrode can hold the deflection state of a pixel element.
    Type: Grant
    Filed: December 26, 2007
    Date of Patent: June 28, 2011
    Assignees: Silicon Quest Kabushiki Kaisha, Olympus Corporation
    Inventors: Kazuma Arai, Fusao Ishii, Yoshihiro Maeda
  • Patent number: 7969395
    Abstract: The present invention discloses a spatial light modulator includes a plurality of pixel elements disposed on a substrate. Each of the pixel elements comprises a deflectable micromirror. Specifically, instead of SRAM, the spatial light modulator is implemented with a DRAM in each of the pixel elements. The DRAM in each of the pixel elements has a smaller number of transistors than SRAM. The spatial light modulator can be manufactured with smaller pixel size and circuit configuration with improved withstand voltage. Further improvements can also be achieved for manufactured the spatial light modulator with smaller capacitor with better layout configuration for wire connections and control signal transmissions.
    Type: Grant
    Filed: March 30, 2009
    Date of Patent: June 28, 2011
    Assignees: Silicon Quest Kabushiki-Kaisha, Olympus Corporation
    Inventors: Naoya Sugimoto, Yoshihiro Maeda, Fusao Ishii
  • Patent number: 7969404
    Abstract: A liquid crystal display apparatus includes a backlight assembly which includes a device for driving the backlight including a light emitting diode (“LED”) used as a light source, which has a high efficiency and a high reliability for controlling brightness of each color light. The driving device drives a first, second and third LED unit emitting a first, second and third light, respectively. The driving device includes a first driving part emitting the first light in response to a brightness control signal and outputting a reference control signal in response to a first brightness of the first light, a second driving part driving the second LED units generating the second light of which second brightness is controlled in response to the reference control signal, and a third driving part driving the third LED units generating the third light of which third brightness is controlled in response to the reference control signal.
    Type: Grant
    Filed: October 25, 2006
    Date of Patent: June 28, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Sang-Gil Lee, Hyeon-Yong Jang, Mun-Soo Park
  • Publication number: 20110148747
    Abstract: A multi-primary color display has pixels, and each pixel includes at least four sub pixels which display red primary color, green primary color, blue primary color and cyan primary color, respectively. When the four primary colors are displayed to achieve white balance, their luminance ratios are: the relative luminance of green primary color is greater than the relative luminance of red primary color, the relative luminance of red primary color is greater than the relative luminance of cyan primary color, and the relative luminance of cyan primary color is greater than the relative luminance of blue primary color. A method for manufacturing the multi-primary color display is disclosed as well.
    Type: Application
    Filed: February 28, 2011
    Publication date: June 23, 2011
    Applicant: AU OPTRONICS CORP.
    Inventors: Guo-Feng Uei, Chih-Cheng Chan
  • Publication number: 20110148954
    Abstract: For an image display apparatus, cost reduction is enabled to prevent display errors while ensuring operational margin to prevent display errors even when the delay time of gate line driving signals is large. A source driver of a liquid-crystal display apparatus includes a data latch circuit for supplying display data to a decode circuit. A gate line inactivation transition detecting circuit detects inactivation of each of a plurality of gate lines and activates a detect signal for a certain period with that timing. The data latch circuit updates the held display data in response to activation of the detect signal.
    Type: Application
    Filed: December 8, 2010
    Publication date: June 23, 2011
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Youichi Tobita, Yoshifumi Doi, Hiroyuki Murai
  • Publication number: 20110148948
    Abstract: A method of operating a display including loading image data to pixels in multiple rows of pixels in an array of pixels during a data loading phase, actuating the pixels in the multiple rows during an update phase, and illuminating at least one lamp during an lamp illumination phase to illuminate the actuated pixels to form an image on the display, in which each of the loading, actuating and illuminating phases partially overlap in time.
    Type: Application
    Filed: February 1, 2011
    Publication date: June 23, 2011
    Applicant: Pixtronix, Inc.
    Inventors: Jignesh Gandhi, Jasper Lodewyk Steyn, John J. Fijol, Roger W. Barton, Stephen R. Lewis, Abraham McAllister, Nesbitt W. Hagood
  • Patent number: 7965274
    Abstract: A display apparatus is disclosed that includes two opposing substrates, an electrophoretic element arranged between the substrates; pixel electrodes that are arranged on one of the substrates and are divided into pixel groups including at least a first pixel group and a second pixel group, a common electrode that is arranged on the other substrate, and a control unit that controls frame display operations of the pixel groups. The control unit controls the first pixel group to start frame display operations for displaying a frame and then controls the second pixel group to start frame display operations for displaying another frame before the frame display operations of the first pixel group are completed.
    Type: Grant
    Filed: August 8, 2007
    Date of Patent: June 21, 2011
    Assignee: Ricoh Company, Ltd.
    Inventors: Atsushi Okada, Shin Aoki, Takao Inoue
  • Patent number: 7965266
    Abstract: An image display unit and a method of detecting an object which are capable of reliably detecting an object with a simple structure irrespective of use conditions are provided. Invisible light is emitted from a screen of a display portion. The invisible light reflected from a target object which comes in contact with or close to the screen is received on the screen. On the basis of the received invisible light, the target object is detected. Thus, the target object can be reliably detected without influence of the display state of the display portion, and influence of use conditions such as surrounding circumstances (the case where it is bright or dark). Moreover, for example, it is not necessary to separately arrange a component such as a touch panel, so the image display unit can be achieved with a simple structure.
    Type: Grant
    Filed: April 13, 2006
    Date of Patent: June 21, 2011
    Assignee: Sony Corporation
    Inventors: Kazunori Yamaguchi, Hirotoshi Fujisawa, Tsutomu Harada, Mitsuru Tateuchi
  • Patent number: 7965859
    Abstract: A system and method for controlling lighting conditions in a user environment in the context of an image capture device are disclosed. An inner frame area and an outer frame area adjust certain lighting conditions in the user environment in response to certain lighting conditions detected by the image capture device. The frame areas may be dynamically controlled as to affect the brightness and/or color of the particular user environment.
    Type: Grant
    Filed: January 19, 2007
    Date of Patent: June 21, 2011
    Assignee: Sony Computer Entertainment Inc.
    Inventor: Richard Marks
  • Publication number: 20110141150
    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: Application
    Filed: June 8, 2010
    Publication date: June 16, 2011
    Inventors: Roger A. Hajjar, David Kindler, Patrick Tan, David Kent, Phillip H. Malyak
  • Patent number: 7961161
    Abstract: A display system includes a spatial light modulator for displaying a image by the modulation state of a plurality of micromirrors, and a control device for controlling the spatial light modulator. The control device includes a data conversion device for converting the digital image data into non-binary data, and a modulation-control device for generating a modulation control signal for micromirrors depending on the non-binary data, and controlling the spatial light modulator. The modulation state of the micromirrors by the modulation control signal includes modulation by oscillation of the micromirrors. The modulation control signal controls amplitude of the oscillation to be smaller than the maximum amplitude of the micromirrors in the modulation by the oscillation of the micromirrors. The oscillation having smaller amplitude than the maximum amplitude of the micromirrors is repeated by the modulation control signal in an optional time duration or frequency.
    Type: Grant
    Filed: March 1, 2008
    Date of Patent: June 14, 2011
    Assignees: Silicon Quest Kabushiki-Kaisha, Olympus Corporation
    Inventors: Taro Endo, Yoshihiro Maeda, Kazuma Arai, Fusao Ishii
  • Publication number: 20110128307
    Abstract: Embodiments include methods and devices for controlling the spectral profile and color gamut of light produced by an interferometric display. Such devices include illuminating a display with selected wavelengths of light. Embodiments also include a display comprising separate sections that output different predetermined colors of light. Other embodiments include methods of making the aforementioned devices.
    Type: Application
    Filed: February 11, 2011
    Publication date: June 2, 2011
    Applicant: QUALCOMM MEMS TECHNOLOGIES, INC.
    Inventors: Brian J. Gally, William J. Cummings
  • Patent number: 7948505
    Abstract: The present invention provides an image signal processor, comprising: (a) an input circuit for receiving and/or holding an image signal of N-bit binary data word, where N is a positive integer; (b) a data converter converting at least M-bit data of binary data into non-binary data having multiple bits, where M is a positive integer and N?M?2, wherein (c) all bits of the non-binary data have a weight which is equal to, or less than, that of the least significant bit of the M-bit data of binary data; and (d) the data converter outputting the each bit of the non-binary data in sequence starting from an equal data value.
    Type: Grant
    Filed: August 16, 2007
    Date of Patent: May 24, 2011
    Assignees: Silicon Quest Kabushiki-Kaisha, Olympus Corporation
    Inventors: Kazuma Arai, Fusao Ishii, Yoshihiro Maeda, Hirotoshi Ichikawa
  • Patent number: 7944661
    Abstract: A protection circuit which is capable of preventing a faulty operation resulting from an abnormal control signal a method for operating the same, a flat display device using the same, and a method for driving the flat display device using the same are disclosed. The protection circuit includes a reference voltage output circuit for outputting a first reference voltage corresponding to a minimum allowable voltage of a control signal and a second reference voltage corresponding to a maximum allowable voltage of the control signal, and a comparison circuit, comparing a level of the control signal with the first reference voltage and second reference voltage and supplying a output control voltage corresponding to the control signal representing the a high-logic state to the controller when the level of the control signal has a value between the first reference voltage and the second reference voltage.
    Type: Grant
    Filed: June 29, 2006
    Date of Patent: May 17, 2011
    Assignee: LG Display Co., Ltd.
    Inventor: Sang Gyu Kim
  • Patent number: 7944411
    Abstract: To equalize the intensity of light emitted by display elements on a display device, a plurality of current-drive circuits are connected in cascade through two terminals of each of the current-drive circuits, each comprising a reference current generation section including a reference resistor and a plurality of current drive sections. Reference current sunk by an external reference current source causes a voltage drop across the reference resistor, and the voltage drop is applied across a current adjustment resistor In response to an image signal, the current-drive circuit outputs current, determined by multiplying each of a plurality of internal reference currents by an optional factor and summing the resulting currents to the display elements. Since the magnitude of the internal reference current flowing inside the current-drive circuit can be varied by varying the value of the current adjustment resistor, gamma correction can be applied to drive current with high accuracy.
    Type: Grant
    Filed: January 30, 2004
    Date of Patent: May 17, 2011
    Assignee: NEC Electronics
    Inventor: Yutaka Saeki
  • Publication number: 20110109529
    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: Application
    Filed: September 7, 2010
    Publication date: May 12, 2011
    Applicant: Prysm, Inc.
    Inventors: Roger A. Hajjar, David Kent, Phillip H. Malyak
  • Publication number: 20110111807
    Abstract: Disclosed is electronic device including a case body including a front surface side portion of the case body and a rear surface side portion of the case body; a flat display module accommodated in the case body; a conductive layer formed on an internal wall of one of the front surface side portion of the case body and the rear surface side portion of the case body, the internal wall being around a contact portion of both portions of the case body; a circuit board having electrical components mounted thereon; and a ground means that electrically connects the conductive layer to a GND of the circuit board.
    Type: Application
    Filed: May 14, 2010
    Publication date: May 12, 2011
    Applicant: SONY ERICSSON MOBILE COMMUNICATIONS AB
    Inventor: Nobuhiko KIDO
  • Publication number: 20110109533
    Abstract: There is provided a surface light source device having a configuration where light sources are arranged on both of a pair of side surfaces of a light guide plate and allowed to independently form nonuniform light emission intensity distributions in which light emission intensity is lower and higher at places closer to and farther from each of the light sources. Light guide control sections controlling guiding of light from light sources are arranged on a reflection surface of a light guide plate. The light guide control section is configured of concave sections, and the concave sections include inclined surfaces facing the light source and inclined surfaces facing the light source, respectively, and the heights of the concave sections increase with increasing distance from the light source. A nonuniform light emission intensity distribution in which light emission intensity is lower and higher at places closer to and farther from the light source is formed by lighting of the light source.
    Type: Application
    Filed: June 17, 2009
    Publication date: May 12, 2011
    Applicant: SONY CORPORATION
    Inventor: Hiromasa Suzuki
  • Publication number: 20110102308
    Abstract: An image display unit comprises a display area including pixels, and an imaging unit disposed at its rear side behind the display area. Light transmissive sections are located within the display area and correspond to the pixels. The light transmissive sections are configured to separately receive light incident upon the image display unit, and pass the received light to the imaging unit.
    Type: Application
    Filed: October 13, 2010
    Publication date: May 5, 2011
    Applicant: Sony Corporation
    Inventors: Kazuo Nakamura, Katsuhide Uchino, Jiro Yamada, Ken Tamayama, Hiroshi Sagawa
  • Publication number: 20110090156
    Abstract: A method for controlling an operation of a display apparatus according to the quantity of incident external light and a display apparatus using the same are provided. The display apparatus controls an operating mode thereof according to the quantity of external light incident to a surface on a display. Therefore, unnecessary power consumption may be eliminated, and an unintended command may be prevented from being mistakenly input and performed.
    Type: Application
    Filed: May 21, 2010
    Publication date: April 21, 2011
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jeong-a CHO, Sang-hyun KOH
  • Patent number: 7928940
    Abstract: Embodiments of exemplary MEMS interferometric modulators are arranged at intersections of rows and columns of electrodes. In certain embodiments, the column electrode has a lower electrical resistance than the row electrode. A driving circuit applies a potential difference of a first polarity across electrodes during a first phase and then quickly transition to applying a bias voltage having a polarity opposite to the first polarity during a second phase. In certain embodiments, an absolute value of the difference between the voltages applied to the row electrode is less than an absolute value of the difference between the voltages applied to the column electrode during the first and second phases.
    Type: Grant
    Filed: August 28, 2006
    Date of Patent: April 19, 2011
    Assignee: QUALCOMM MEMS Technologies, Inc.
    Inventors: Clarence Chui, Manish Kothari, Marc Mignard, Mithran C. Mathew, Jeffrey B. Sampsell
  • Patent number: 7928941
    Abstract: It is possible to suppress the voltage amplitudes of data lines and to prevent deterioration in display quality by a simple configuration. Each of pixels 110 includes a pixel capacitor and a storage capacitor of which one end is connected to a pixel electrode and the other end is connected to each capacitive line 132. If first, second, third, . . . , 320th, and 321st scanning lines 112 are sequentially selected, the capacitive line 132 of each row is provided with TFTs 152, 154, 156 and 158. A source electrode of the TFT 156 of a first row is connected to a first feed line 165 and a gate electrode thereof is connected to a first scanning line 112. A source electrode of the TFT 158 is connected to a second feed line 167 and a gate electrode thereof is connected to a common drain electrode of the TFTs 152 and 154. The drain electrodes of the TFT 156 and 158 are connected to the first capacitive line 132. A gate electrode of the TFT 152 is connected to a second scanning line 112.
    Type: Grant
    Filed: December 17, 2007
    Date of Patent: April 19, 2011
    Assignee: Sony Corporation
    Inventors: Katsunori Yamazaki, Yasushi Yamazaki
  • Patent number: 7920112
    Abstract: An electronic paper system includes: electronic paper having a display unit that can display and retain an image in a no-power state; image generation means for generating a displaying image by combining a scale-down image of at least a part of a document and an image of at least part of related information of the document; and write means for writing the generated displaying image into the display unit of the electronic paper so that the display unit displays and retains the generated displaying image.
    Type: Grant
    Filed: February 8, 2006
    Date of Patent: April 5, 2011
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Yoko Kurihara, Ikutaroh Nagatsuka, Tsunemasa Mita, Minoru Koshimizu, Yasunori Saito, Tsutomu Ishii
  • Patent number: 7920111
    Abstract: An LED-based optical system and a method of compensating for aging thereof are provided. The LED-based optical system includes LED blocks composed of a predetermined number of LEDs; a sensor which senses output values of the respective LED blocks; and a control block which generates compensation rates by comparing initial output values of the respective LED blocks in an initial state with comparison output values of the LED blocks sensed by the sensor at a comparison time point, and controls current being supplied to the respective LED blocks in accordance with the compensation rates.
    Type: Grant
    Filed: April 9, 2007
    Date of Patent: April 5, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Rustam Abdulaev, Hoon Choi
  • Patent number: 7919775
    Abstract: A method of operating a semiconductor device, a semiconductor device and a digital micromirror system are presented. In an embodiment, the semiconductor device comprises a grounded substrate, a memory array, and a reset driver. The memory array may be isolated from the grounded substrate with a buried layer. The set of voltages of the memory array may be shifted with respect to a reset voltage. The reset driver may drive the reset voltage and the reset driver may have at least one extended drain transistor in the grounded substrate.
    Type: Grant
    Filed: May 27, 2009
    Date of Patent: April 5, 2011
    Assignee: Texas Instruments Incorporated
    Inventors: James D. Huffman, James N. Hall
  • Patent number: 7918563
    Abstract: A method includes generating a plurality of beams that each illuminate a separate portion of a spatial light modulator. The spatial light modulator has a first dimension of a first length and a second dimension of a second length. Each of the beams spans a portion of the first length of the first dimension and a portion of the second length of the second dimension. The method also includes scrolling the plurality of beams along the second dimension of the spatial light modulator while maintaining at least a first gap between each of the plurality of beams.
    Type: Grant
    Filed: August 1, 2007
    Date of Patent: April 5, 2011
    Assignee: Texas Instruments Incorporated
    Inventors: Philip Scott King, Gregory James Hewlett, Roger Mitsuo Ikeda, Jeffrey Scott Farris
  • Patent number: 7916103
    Abstract: Systems and methods of displaying an end-of-life image on an electronic display are disclosed. An end-of-life image is displayed on a MEMS display device in the presence of sufficient water vapor and without continued activation of the display. The image can he displayed in response to user input, in response to detection of a predefined level of water vapor within the display package, according to a prestored lifetime of the device, or according to the natural expiration of the lifetime of the display device and packaging.
    Type: Grant
    Filed: April 8, 2005
    Date of Patent: March 29, 2011
    Assignee: QUALCOMM MEMS Technologies, Inc.
    Inventor: Lauren Palmateer
  • Patent number: 7916133
    Abstract: A buffer circuit is driven with a low voltage and operates at a high speed has first and second comparators constituted by P channel and N channel MOS transistors provided between an input terminal and an output terminal of a buffer amplifier. A predetermined offset voltage is set for the comparing operation, and a switch circuit turns ON/OFF in response to an output signal from the first comparator and the output signal of the second comparator. A leading up of an output voltage from the buffer amplifier is accelerated by the current flowing from a power source line to the output terminal. The buffer circuit also includes an operation restricting circuit for restricting the comparing operation of the second comparator in a range of a dead band of the transistors.
    Type: Grant
    Filed: September 6, 2005
    Date of Patent: March 29, 2011
    Assignee: Rohm Co., Ltd.
    Inventor: Hiroyuki Inokuchi
  • Patent number: 7916101
    Abstract: A light emitting diode (LED) driving apparatus includes a drive section for driving an LED to emit light, and a control section that controls a driving current supplied from the drive section to the LED. The control section implements luminous power control by controlling an ON/OFF ratio of the driving current if a target value of luminous power of the LED is smaller than a predetermined value. The control section implements luminous power control by controlling a level of the driving current if the target value is equal to or larger than the predetermined value.
    Type: Grant
    Filed: October 3, 2005
    Date of Patent: March 29, 2011
    Assignee: Sony Corporation
    Inventor: Yoshiki Oyama
  • Patent number: 7916105
    Abstract: A liquid crystal display device including a liquid crystal panel, a data driver configured to supply a pixel driving signal to pixels on the liquid crystal panel in one line unit, an input unit configured to input video data to be supplied to the data driver, a low gray scale compensator configured to compensate a low gray scale value video data in the video data received from the input unit to generate a high gray scale value video data, and a selection controller configured to detect a brightness of the video data received from the input unit, and to selectively supply the high gray scale value video data received from the low gray scale compensator or the video data received from the input unit.
    Type: Grant
    Filed: November 1, 2006
    Date of Patent: March 29, 2011
    Assignee: LG Display Co., Ltd.
    Inventors: Woong Ki-Min, Jae Woo Lee, So Hyuk Jang
  • Patent number: 7911428
    Abstract: Embodiments include methods and devices for controlling the spectral profile and color gamut of light produced by an interferometric display. Such devices include illuminating a display with selected wavelengths of light. Embodiments also include a display comprising separate sections that output different predetermined colors of light. Other embodiments include methods of making the aforementioned devices.
    Type: Grant
    Filed: August 19, 2005
    Date of Patent: March 22, 2011
    Assignee: QUALCOMM MEMS Technologies, Inc.
    Inventors: Brian J. Gally, William J. Cummings
  • Patent number: 7911461
    Abstract: A current distributor that simplifies the architecture and reduces the connecting wires. According to the invention, current distributor can be utilized for distributing the current evenly through a plurality of rows of light-emitting diodes. Each respectively is coupled between a supply pin and a first current pin. The first current pin is coupled to the current distributor. The current distributor is coupled to a total current pin. The current distributor comprises a first resistor, a plurality of first clamp circuitries, a second clamp circuitry and a plurality of first transistors. The first resistor has a first end and a second end. The first end is coupled to the supply pin. Each of the plurality of first clamp circuitries has a first terminal and a second terminal. Each of the first terminal of the first clamp circuitries is coupled to the second end of the first resistor. Each of the second terminal of the first clamp circuitries is coupled to the first current pin.
    Type: Grant
    Filed: April 7, 2008
    Date of Patent: March 22, 2011
    Assignee: ADDtek Corp.
    Inventor: Yung-Hsin Chiang
  • Patent number: 7911440
    Abstract: A backlight driving apparatus of a liquid crystal display (LCD) apparatus including a master trans and a slave trans for supplying a current to a plurality of lamps, and a master driver and a slave driver for driving the lamps, includes an operated condition unit that converts an AC voltage generated in accordance with a phase difference between a master AC voltage and a slave AC voltage fed back from the master trans and the slave trans, respectively, into an analog DC voltage; a protect controller that determines an error is generated during an operation of the lamps using the analog DC voltage and outputs an operating error signal when an error is generated; and a lamp driving controller that stops driving the master driver and the slave driver in response to the operating error signal.
    Type: Grant
    Filed: November 21, 2006
    Date of Patent: March 22, 2011
    Assignee: LG Display Co., Ltd.
    Inventor: Tae Wook Lee
  • Patent number: 7903081
    Abstract: A backlight driver includes an inverter controller, a dimming signal compensator and an inverter. The inverter controller generates a pulse width modulation signal in response to a control signal and outputs a first dimming signal that represents a duty ratio of the pulse width modulation signal and a second dimming signal that represents an amplitude of the pulse width modulation signal. The dimming signal compensator receives the first and second dimming signals, compares the first dimming signal with a predetermined reference duty ratio and compensates the second dimming signal in accordance with the compared result to generate a third dimming signal. The inverter outputs a driving voltage to drive the backlight and varies a voltage level of the driving voltage in response to the first and third dimming signals to control a brightness of the backlight.
    Type: Grant
    Filed: August 29, 2007
    Date of Patent: March 8, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Hyeon-Yong Jang, Seong-Sik Choi
  • Patent number: 7903048
    Abstract: In an information display apparatus such as a head-up display, while safety is being secured, visibility from a user is improved. Image data having an object such as an arrow showing an advancing direction or a road sign drawn on it are generated as information to be given to the user by a display information generating section 12 and is output to a projector 13. When a light beam R1 corresponding to the image data is emitted from the projector 13 to a combiner 14, reflected light of the light beam R1 and transmitted light of external light R2 are combined in the combiner 14, so as to be viewed by the user.
    Type: Grant
    Filed: June 16, 2005
    Date of Patent: March 8, 2011
    Assignee: Pioneer Corporation
    Inventor: Takuma Yanagisawa
  • Patent number: 7903055
    Abstract: Disclosed is a light-emitting display having a plurality of pixels wherein each pixel comprises a light-emitting device (100) having a light-emitting element layer which is formed between a first electrode and a second electrode and contains at least a light-emitting layer. An insulating layer (30) is formed between the light-emitting device (100) and a surface of a first or second substrate on the viewing side of the display, and the insulating layer (30) is provided with recesses and projections in at least one or more pixel regions, thereby forming an optical path length adjusting portion (32). By forming such an optical path length adjusting portion (32) in a pixel region, there is an increase in the interference conditions for the light emitted from the light-emitting device (100) to the outside, thereby averaging the interference.
    Type: Grant
    Filed: April 27, 2005
    Date of Patent: March 8, 2011
    Assignee: Sanyo Electric Co., Ltd.
    Inventors: Ryuji Nishikawa, Tetsuji Omura
  • Patent number: 7903049
    Abstract: The invention relates to an illumination unit for point illumination of a medium comprising a plurality of light emitters in the form of light guides, which are arranged to illuminate at least one illumination face via a light valve arrangement, said light valve arrangement comprising a plurality of electrically controlled light valves, at least one of the light emitters (1) being arranged to illuminate a plurality of light valves.
    Type: Grant
    Filed: April 10, 2008
    Date of Patent: March 8, 2011
    Assignee: Dicon A/S
    Inventor: Henning Henningsen
  • Patent number: 7903061
    Abstract: A portable electronics device (110, 210) having a self illuminating display (112, 200, 400, 402, 404, 406, 500, 600, 700) that reduces both the thickness of known displays and processing steps in the fabrication thereof is provided. The portable electronic device (110, 210) includes an electrowetting display (112, 200, 400, 402, 404, 406, 500, 600, 700) having a plurality of layers (416, 420; 222, 210; 322, 312; 722, 712) defining a cavity (419) containing a mixture of a first fluid (418, 536, 736) and a second fluid (410, 560, 660, 730) positioned in the cavity (419). First circuitry (424) is configured to be coupled to a first voltage source (422) for selectively repositioning the second fluid (410, 560, 660, 730) in relation to the first fluid (418, 536, 736).
    Type: Grant
    Filed: May 31, 2007
    Date of Patent: March 8, 2011
    Assignee: Motorola, Inc.
    Inventors: Min-Xian M. Zhang, Zili Li
  • Patent number: 7903104
    Abstract: A spatial light modulator having two static random access memory (SRAM) devices, including a display controller configured with a display sequence, the display sequence including a first display slice and a second display slice, the first display slice having a display time less than two times a minimum time period determined by the time of a write event, and the second display slice having a display time of more than two times the minimum time period. The controller controls write events from the two SRAM devices, and the first display slice and second display slice are ordered in the display sequence so that the controller causes the spatial light modulator to output light and causes the two SRAM devices each to perform a write event during the second display slice.
    Type: Grant
    Filed: March 21, 2007
    Date of Patent: March 8, 2011
    Assignee: Spatial Photonics, Inc.
    Inventors: Chih-Liang Chen, Alex Hung-Pin Sun
  • Publication number: 20110050668
    Abstract: The present invention relates to a display device, which includes: a backlight unit that is divided into a plurality of blocks, driven for each of the divided blocks, and includes at least one optical assembly; a display panel that is disposed above the backlight unit; a controller that outputs local dimming values for each block corresponding to the brightness of the blocks in the backlight unit, in accordance with an image displayed on the display panel; and a BLU driver that controls the brightness of the blocks in the backlight unit, using the local dimming values for each block; in which the optical assembly includes: a first layer; a plurality of light sources formed on the first layer and emitting light; a second layer disposed above the first layer to cover the light sources; and a reflective layer that is disposed between the first and second layers, and the BLU driver outputs a plurality of driving signals in response to the input local dimming values for each block, and the driving signals each con
    Type: Application
    Filed: June 8, 2010
    Publication date: March 3, 2011
    Inventors: Sangtae PARK, Minchul Kim, Sungwoo Kim, Bupsung Jung, Buwan Seo, Myounghwa Ko, Seungchoon Bae, Soonhyung Kwon