Light-emitting Diodes Patents (Class 345/46)
  • Patent number: 10712504
    Abstract: A hybrid outlet system includes an electrical outlet, a fiber optic adapter, and a single faceplate. The electrical outlet is coupled to an electrical system and configured to receive an electrical plug coupled to an electrically powered device. The fiber optic adapter is coupled to a fiber optic network and configured to receive a fiber optic connector coupled to a first end of an optical fiber; the second end of the optical fiber being coupled to a telecommunication or data communication device. The single faceplate is configured to provide plug coupling access to the electrical outlet and connector coupling access to the fiber optic adapter.
    Type: Grant
    Filed: March 27, 2017
    Date of Patent: July 14, 2020
    Assignee: COMMSCOPE TECHNOLOGIES LLC
    Inventor: Eric Ryan Chappell
  • Patent number: 10595470
    Abstract: A method and apparatus are described herein for capturing images of plants using a broad spectrum camera while illuminating the plants with specific light wavelengths from light sources such as light emitting diodes (LEDs). A first light source may be activated, wherein the first light source emits light having a first spectrum toward a bed of a plurality of plants. On a condition that the first light source is activated, a first image of the bed of the plurality of plants may be captured with a broad spectrum camera. A second light source may be activated, wherein the second light source emits light having a second spectrum toward the bed of the plurality of plants. On a condition that the second light source is activated, a second image of the bed of the plurality of plants may be captured with the broad spectrum camera.
    Type: Grant
    Filed: June 20, 2019
    Date of Patent: March 24, 2020
    Assignee: Lumileds LLC
    Inventor: Alan McReynolds
  • Patent number: 10572208
    Abstract: A display device includes a signal receiver configured to receive an image signal; a display including a plurality of modules each including a plurality of light sources, and display an image based on the received image signal; and a controller configured to perform first uniformity calibration between light sources within each individual module with regard to the modules, and second uniformity calibration between the modules, wherein the controller controls the first uniformity calibration to be applied to the image signal received in the signal receiver based on a first coefficient determined for each of the light sources within each individual module, controls the second uniformity calibration to be applied to the image signal subjected to the first uniformity calibration based on a second coefficient determined for each of the modules, and controls a calibrated image to be displayed based on the image signal subjected to the second uniformity calibration.
    Type: Grant
    Filed: June 9, 2016
    Date of Patent: February 25, 2020
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Ji-yong Park, Min-jung Kim, Sang-kyun Im, Young-hoon Cho
  • Patent number: 10375278
    Abstract: Electronic devices, storage medium containing instructions, and methods pertain to cancelling noise that results from application of voltages on gates of transistors in a display. One or more compensation or dummy drivers are used to apply a compensation voltage that is an inversion of voltages applied on the gates of the transistors.
    Type: Grant
    Filed: September 21, 2017
    Date of Patent: August 6, 2019
    Assignee: APPLE INC.
    Inventors: Keitaro Yamashita, Ting-Kuo Chang, Cheng-Ho Yu, Warren S. Rieutort-Louis
  • Patent number: 10172194
    Abstract: Disclosed herein is a light emitting element driving circuit including: a capacitive element; a current limiting section limiting a charging current for the capacitive element; a first constant current source stabilizing a discharging current supplied from the capacitive element to a light emitting element; and a switch controlling ON and OFF in supplying the discharging current to the light emitting element. The capacitive element is charged with electricity from the power source circuit in the preceding stage through the current limiting section. Also, the electric charges in the capacitive element are discharged in the form of a given discharging current for the discharging time period, and the light emitting element emits light in accordance with the given discharging current. In this case, the charging current for the capacitive element is limited by the current limiting section in such a way that the current value thereof becomes small.
    Type: Grant
    Filed: January 12, 2012
    Date of Patent: January 1, 2019
    Assignee: Sony Corporation
    Inventor: Norimasa Furukawa
  • Patent number: 10123386
    Abstract: A lighting apparatus includes first and second light emitting areas, a color temperature controller, and a balance circuit. The first light emitting area includes first light-emitting arrays connected in series and outputs light of a first color temperature. The second light emitting area includes second light-emitting arrays connected in series and connected to the first light emitting area in parallel. The second light-emitting arrays output light of a second color temperature different from the first color temperature. The color temperature controller is selectively connected to at least one of an input node of the first light emitting area and an input node of the second light emitting area. The color temperature controllers determines an on/off state of the first and second light emitting areas. The balance circuit is connected to at least one of the first and second light emitting areas in series.
    Type: Grant
    Filed: March 30, 2018
    Date of Patent: November 6, 2018
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Sang Cheol Bong, Min Soo Han, Hyun Jung Kim, Kil Yoan Chung
  • Patent number: 10070495
    Abstract: A lighting fixture includes a solid-state lighting source, such as an LED light source. A control module of the lighting fixture uses temperature sensing circuitry to determine a relative ambient temperature. When the ambient temperature is above a defined ambient temperature threshold, a drive signal is provided to the solid-state light source at a target drive level that corresponds to a normal light output level. When the ambient temperature is below the ambient temperature threshold, the drive signal is provided to the solid-state light source at a reduced drive level, which is lower than the target drive level.
    Type: Grant
    Filed: May 1, 2015
    Date of Patent: September 4, 2018
    Assignee: Cree, Inc.
    Inventors: Yuequan Hu, Eric Low
  • Patent number: 10028339
    Abstract: A display panel includes: a substrate including a first area, a second area forming a predetermined angle with the first area, and a first bending area between the first area and the second area; a first display unit and a first embedded circuit unit in the first area of the substrate; and a second display unit and a second embedded circuit unit in the second area of the substrate.
    Type: Grant
    Filed: September 27, 2013
    Date of Patent: July 17, 2018
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Young-Bae Jung, Dong-Wook Kim
  • Patent number: 9983710
    Abstract: The disclosure is related to a carbon nanotube based flexible mobile phone. The carbon nanotube based flexible mobile phone includes a flexible body having a flexible display panel, a communicating system disposed in the flexible body, a flexible capacitive-type touch panel located on the flexible display panel. The touch panel includes a flexible substrate located on the flexible display panel, a carbon nanotube layer located on a surface of the flexible substrate, and two electrodes located on the flexible substrate, spaced from each other, and electrically connected to the carbon nanotube layer.
    Type: Grant
    Filed: April 27, 2015
    Date of Patent: May 29, 2018
    Assignees: Tsinghua University, HON HAI PRECISION INDUSTRY CO., LTD.
    Inventors: Kai-Li Jiang, Liang Liu, Qun-Qing Li, Shou-Shan Fan
  • Patent number: 9974132
    Abstract: Disclosed is a controller for controlling a string of N LEDs connected in series and each having a current bypass switch in parallel therewith and configured to be supplied from a current source connected in series with the string of LEDs and being supplied by a supply voltage, the controller comprising: a respective bypass switch controller for each bypass switch and configured to control the respective bypass switch such that the respective LED has an on-period and an off-period, according to a common duty cycle; a phase control unit configured to set a respective timing of each of the bypass switches such that the fraction of LEDs not bypassed corresponds to the duty cycle; and a duty cycle adjustor configured to adjust the duty cycle, in dependence on the supply voltage. Associated methods and circuits are also disclosed.
    Type: Grant
    Filed: September 9, 2016
    Date of Patent: May 15, 2018
    Assignee: NXP B.V.
    Inventors: Henricus Cornelis Johannes Büthker, Arnoud Pieter van der Wel
  • Patent number: 9899000
    Abstract: A display device configured to display at least one image. The display device includes at least one light emitter configured to emit a plurality of colored light beams, each of the plurality of colored light beams being a respective color different than the others; and a light emission controller configured to determine, based on at least one characteristic of the at least one image, one or more light beams of the plurality of colored light beams to emit in a frame period corresponding to the at least one image.
    Type: Grant
    Filed: June 17, 2014
    Date of Patent: February 20, 2018
    Assignee: Sony Corporation
    Inventors: Noriyoshi Takahota, Takashi Hirakawa, Eiji Kato
  • Patent number: 9817437
    Abstract: A stretchable display device including a stretchable display to display an image, the stretchable display having a band shape; holes on an outwardly facing surface of the stretchable display; and a stopper on an inwardly facing surface of the stretchable display, the stopper being coupleable with any one of the holes to loop the stretchable display device in a ring form, wherein a size of an image display area of the stretchable display is controllable based on a current value that depends on a position of a hole to which the stopper is coupled.
    Type: Grant
    Filed: July 15, 2015
    Date of Patent: November 14, 2017
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventor: Young Chan Kim
  • Patent number: 9767734
    Abstract: An display device includes a display panel including a plurality of pixels; a scan driver configured to provide scan signals to the pixels; a data driver configured to provide data signals to the pixels; a look-up table (LUT), wherein an efficiency curve indicating a relationship between an accumulated driving time and an efficiency value is stored in the LUT; a lifespan register, wherein an efficiency changing region for deriving the efficiency value of each of the pixels from the LUT is stored in the lifespan register and the lifespan register is configured to accumulatively store deterioration data of the pixels; and a controller configured to derive the accumulated driving time from the lifespan register, to update the efficiency changing region and the LUT based on the accumulated driving time, and to convert input image data into output image data using the efficiency changing region and the LUT.
    Type: Grant
    Filed: May 22, 2015
    Date of Patent: September 19, 2017
    Assignee: Samsung Display Co., Ltd.
    Inventors: Bong-Ju Jun, Won-Chang Chung, Kwang-Suk Shin
  • Patent number: 9723680
    Abstract: The present disclosure relates to a lighting fixture that is capable of providing white light over an extended range of correlated color temperatures.
    Type: Grant
    Filed: May 30, 2014
    Date of Patent: August 1, 2017
    Assignee: Cree, Inc.
    Inventors: Daniel J. Pope, Andrew Dummer, James McBryde, Heidi Loepp, P. Joseph DeSena, Jr., Priyanka S Medida
  • Patent number: 9642228
    Abstract: A light-emitting element driving circuit system is provided in which a plurality of current paths, in each of which a light-emitting element and a switching element which is controlled to be switched ON and OFF for causing light to be emitted from the light-emitting element are connected in series, are placed in parallel to each other, wherein an ON time of each switching element is adjusted based on a light-emission period which is a period in which the light-emitting elements are caused to emit light in a circulating manner, such that a number of switching operations of each switching element is reduced.
    Type: Grant
    Filed: December 8, 2013
    Date of Patent: May 2, 2017
    Assignee: SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC
    Inventor: Takuya Takeuchi
  • Patent number: 9535648
    Abstract: A display system is disclosed. The display system includes a plurality of display apparatuses which are rotated in a vertical direction and disposed parallel to each other, wherein the plurality of display apparatuses may reverse and change the width and height of one received image, and may display each of the divided sub images by as many as the number of the plurality of display apparatuses, according to a location of disposition. Accordingly, the plurality of display apparatuses may display an image in the same ratio of a screen ratio of a received image without ratio readjustment or data distortion.
    Type: Grant
    Filed: May 6, 2014
    Date of Patent: January 3, 2017
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventor: Hee-young Kang
  • Patent number: 9532426
    Abstract: An adjustment method for LED backlight brightness, comprising the following steps of: if the current LED backlight brightness is greater than a preset value, maintaining the PWM duty ratio as the maximum value, and adjusting the LED backlight brightness by adjusting an LED conduction current (S10); and if the current LED backlight brightness is not greater than the pre-set value, maintaining the LED conduction current to be constant, and adjusting the LED backlight brightness by adjusting the change of the PWM duty ratio between the maximum value and the minimum value (S20). This method can improve the light-emitting efficiency of LEDs, reduce backlight loss, and reduce the noise generated by an LED drive circuit.
    Type: Grant
    Filed: January 15, 2014
    Date of Patent: December 27, 2016
    Assignee: Shenzhen TCL New Technology Co., Ltd.
    Inventors: Dong Wen, Jianshe Qin, Jianqiang Li, Yong Yang, Haiying Zhang, Dexiang Zuo
  • Patent number: 9408266
    Abstract: A circuit can be used for controlling a plurality of LEDs coupled in series. A switching converter operates as a current source coupled to the plurality of LEDs to provide a constant load current thereto. The switching converter includes an inductor coupled in series with the plurality of LEDs such that the same load current flows through the inductor and the plurality of LEDs. No substantial capacitance is coupled between the inductor and the plurality of LEDs. A floating driver circuit is coupled in parallel with each individual LED of the plurality of LEDs. The floating driver circuit is configured to fully or partially take over the load current thereby bypassing the respective LED in accordance with a respective modulated input signal to control the intensity of the light emitted by the LED.
    Type: Grant
    Filed: June 12, 2014
    Date of Patent: August 2, 2016
    Assignee: Infineon Technologies AG
    Inventor: Andrea Logiudice
  • Patent number: 9343015
    Abstract: An organic light emitting display device includes pixels each including a driving transistor and an organic light emitting diode, and a sensing unit configured to extract threshold voltage information of the driving transistor and degradation information of the organic light emitting diode from each of the pixels, wherein the sensing unit includes a conversion unit configured to convert pixel current supplied from a respective one of the pixels into a first voltage, and configured to convert a reference current from a current source into a second voltage, and a comparison unit configured to calculate a difference between the first voltage and the second voltage, and configured to output a comparison voltage corresponding to the difference.
    Type: Grant
    Filed: March 31, 2014
    Date of Patent: May 17, 2016
    Assignee: Samsung Display Co., Ltd.
    Inventor: Hyeon-Ja Jo
  • Patent number: 9082727
    Abstract: The invention discloses a touch detecting structure, an organic light emitting touch display device, a method of detecting a touch on a device and a method of manufacturing a device. The touch detecting structure includes: a first signal transmission line arranged on a first substrate of an organic light emitting touch display device; an insulating layer arranged on the first signal transmission line and having a via hole and a protrusion; a second signal transmission line located on the insulating layer and passing the top of the protrusion; a signal transmission terminal arranged on the lateral surface of the protrusion and having one end connected with the first signal transmission line through the via hole and the other end located on the top of the protrusion, and insulated from the second signal transmission line; and a cathode film arranged on a second substrate.
    Type: Grant
    Filed: March 21, 2014
    Date of Patent: July 14, 2015
    Assignees: Shanghai Tianma Micro-Electronics Co., Ltd., Tianma Micro-Electronics Co., Ltd.
    Inventors: Kai Tian, Yujun Li
  • Patent number: 9040971
    Abstract: A thin film transistor (TFT) that includes a control electrode, a semiconductor pattern, a first input electrode, a second input electrode, and an output electrode is disclosed. in one aspect, the semiconductor pattern includes a first input area, a second input area, a channel area, and an output area. The channel area is formed between the first input area and the output area and overlapped with the control electrode to be insulated from the control electrode. The second input area is formed between the first input area and the channel area and doped with a doping concentration different from a doping concentration of the first input areas. The second input electrode makes contact with the second input area and receives a control voltage to control a threshold voltage.
    Type: Grant
    Filed: September 24, 2013
    Date of Patent: May 26, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventor: Yong Soo Lee
  • Patent number: 9029853
    Abstract: According to one embodiment, a display device includes a first insulating layer, a second insulating layer, a pixel electrode, a light emitting layer, an opposite electrode and a pixel circuit. The second insulating layer is provided on the first insulating layer. The pixel electrode is provided on the second insulating layer and light-transmissive. The light emitting layer is provided on the pixel electrode. The opposite electrode is provided on the light emitting layer. The circuit is provided between the first insulating layer and the second insulating layer, includes an interconnect supplied with a drive current, and is configured to supply the drive current to the pixel electrode. The circuit is connected to the pixel electrode. The interconnect has a first region overlaying the pixel electrode when projected onto a plane parallel to the first insulating layer. The interconnect has an opening in the first region.
    Type: Grant
    Filed: March 4, 2013
    Date of Patent: May 12, 2015
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Nobuyoshi Saito, Tomomasa Ueda, Toshiya Yonehara, Hajime Yamaguchi, Kentaro Miura, Shintaro Nakano, Tatsunori Sakano
  • Patent number: 8992041
    Abstract: A lamp may include an outer shell having heat conductivity and a base provided in the outer shell. The outer shell may include a light source support, and a heat radiating surface exposed to the outside of the outer shell. The light source support may, in some examples, be formed integrally with the heat radiating surface. A light source may be supported on the light source support. The light source may be heated during lighting, and be thermally connected to the light source support. In some examples, the light source may be covered by a cover.
    Type: Grant
    Filed: February 8, 2013
    Date of Patent: March 31, 2015
    Assignee: Toshiba Lighting & Technology Corporation
    Inventor: Shigeru Osawa
  • Patent number: 8988317
    Abstract: Depth information is determined for elements in a light field image, thus allowing for rapid display of visualization tools to communicate such depth information to a user. Depth of strong edges within the light field image is analyzed, providing improved reliability of depth information while reducing or minimizing the amount of computation involved in generating such information. Strong edges can be identified and analyzed by generating epipolar images, or EPIs, from the light field image. Local gradients are determined for pixels in the EPIs. The magnitude of the local gradient is used to determine a confidence as to whether depth can be reliably estimated from the gradient. The orientation of the gradient is used to determine the depth of a corresponding element of the scene. Suitable output is then generated based on the determined depths, for example to provide information and feedback to aid a user in capturing light-field images.
    Type: Grant
    Filed: June 12, 2014
    Date of Patent: March 24, 2015
    Assignee: Lytro, Inc.
    Inventors: Chia-Kai Liang, Colvin Pitts, Kurt Akeley, Alex Song
  • Patent number: 8970472
    Abstract: Disclosed are an apparatus for driving a light emitting diode (LED) array and an LCD device using the same. The apparatus for driving the LED array includes a current amount setter configured to have a resistance value which varies according to a selection signal inputted from an external system, and a controller configured to generate a driving voltage and a driving current by using an input voltage inputted from the external system and the resistance value set by the current amount setter, and supply the driving voltage and the driving current to the LED array.
    Type: Grant
    Filed: October 24, 2013
    Date of Patent: March 3, 2015
    Assignee: LG Display Co., Ltd.
    Inventor: ByeongYun Ha
  • Publication number: 20150049005
    Abstract: According to one embodiment of the present invention, an LED block display apparatus for providing an educational function comprises: a plurality of LED blocks that include a plurality of color LEDs; and a controller for providing a text completion function using the LED blocks. The controller transmits a text display signal for displaying glow text to the LED blocks so that the text can be displayed as being glow by the LED blocks. When the LED block related to the text display signal is clicked, the controller transmits a first color change signal for changing color to the clicked LED block, and outputs a notification signal when colors of the LED blocks related to the text display signal are all changed.
    Type: Application
    Filed: October 17, 2012
    Publication date: February 19, 2015
    Inventor: Woon-Yong Choi
  • Patent number: 8927970
    Abstract: An organic electroluminescence device and a method for manufacturing the same are disclosed. The organic electroluminescence device includes a transparent substrate, a semiconductor layer including a source region, a channel region and a drain region, a gate insulating film having first contact holes on the source and drain regions and formed on the substrate including the semiconductor layer, a gate electrode formed on the gate insulating film above the channel region, an interlayer insulating film having second contact holes on the source and drain regions and formed on an entire surface of the gate insulating film including the gate electrode, and a source electrode and a drain electrode formed on the interlayer insulating film to be electrically connected to the source and drain regions through the first and second contact holes, wherein at least one of the source electrode and the drain electrode is formed to cover the semiconductor layer.
    Type: Grant
    Filed: September 12, 2008
    Date of Patent: January 6, 2015
    Assignee: LG Display Co., Ltd.
    Inventors: Yun Sik Jeong, Joon Young Heo
  • Patent number: 8922458
    Abstract: A system and method distributes data and power in a robust manner for a large scale LED display. Master modules of the display are capable of receiving a data stream on any one of four data ports. The master modules extract the data for its module and an associated group of slave modules from a data stream received on one port and send the received data stream to three other master modules via the other three data ports. Unregulated D.C. power is distributed from one or more power hubs to the master modules which in turn distribute regulated D.C. power to their associated slave modules.
    Type: Grant
    Filed: December 11, 2007
    Date of Patent: December 30, 2014
    Inventors: Robert J. Sefton, Sheldon Lee Black, Hamid Kharrati, Daniel S. Kline, Anthony D. Barghini
  • Patent number: 8901549
    Abstract: The present invention provides an organic light emitting diode touch display panel including a substrate, a plurality of first electrodes and a plurality of second electrodes disposed on the substrate, a plurality of light emitting layers, a plurality of dielectric layers, a plurality of first electrode stripes, and a plurality of second stripes. Each light emitting layer is disposed on each first electrode, and each dielectric layer is disposed on each second electrode. Each first electrode stripe is disposed on the light emitting layers in each row, and each second electrode stripe is disposed on the dielectric layers in each row. Each first electrode, each light emitting layer and each first electrode stripe form an organic light emitting diode, and each second electrode, each dielectric layer and each second electrode stripe form a touch sensing capacitor.
    Type: Grant
    Filed: July 1, 2013
    Date of Patent: December 2, 2014
    Assignee: HannStar Display Corp.
    Inventors: Chien-Hsiang Huang, Kun-Hua Tsai, Jun-Shih Chung, Chun-Hsi Chen
  • Patent number: 8895983
    Abstract: By controlling the luminance of light emitting element not by means of a voltage to be impressed to the TFT but by means of controlling a current that flows to the TFT in a signal line drive circuit, the current that flows to the light emitting element is held to a desired value without depending on the characteristics of the TFT. Further, a voltage of inverted bias is impressed to the light emitting element every predetermined period. Since a multiplier effect is given by the two configurations described above, it is possible to prevent the luminance from deteriorating due to a deterioration of the organic luminescent layer, and further, it is possible to maintain the current that flows to the light emitting element to a desired value without depending on the characteristics of the TFT.
    Type: Grant
    Filed: August 23, 2013
    Date of Patent: November 25, 2014
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Shunpei Yamazaki, Mai Akiba, Jun Koyama
  • Patent number: 8884847
    Abstract: A display apparatus disclosed herein includes a plurality of pixel circuits, each having a plurality of switches configured to receive a driving signal of a predetermined period and to be controlled for opening and closing operation by the driving signal, a drive circuit configured to control the open/closed state of the switches, being operable to scan the pixel circuits and open and close the switches in periods independent of each other.
    Type: Grant
    Filed: March 24, 2008
    Date of Patent: November 11, 2014
    Assignee: Sony Corporation
    Inventors: Mitsuru Asano, Takao Tanikame
  • Patent number: 8879023
    Abstract: A circuit substrate including a base layer and a plurality of lead units arranged as an array is provided, wherein the base layer has a plurality of through grooves, and the lead units are disposed on the base layer. Each of the lead units includes a common terminal and at least three leads. The common terminal is capable of being divided into a plurality of electrodes connected with each other. The leads are extended outwards from the edge of the common terminal, and each of the leads is extended outwards from the edge of one of the electrodes. The through grooves expose the common terminals of the lead units.
    Type: Grant
    Filed: February 11, 2009
    Date of Patent: November 4, 2014
    Assignee: Everlight Electronics Co., Ltd.
    Inventor: Wen-Chieh Tsou
  • Patent number: 8872867
    Abstract: A signal processing device measures an actual luminance of a light-emitting device by setting levels of gradation values indicating the degree of light emission to a pixel circuit having the light-emitting device to generate measurement information. The device also calculates gradation deterioration characteristics based on the measurement information and the relationship between a gradation value and a luminance value when the pixel circuit is in a correction reference state. A deterioration value calculation calculates a conversion efficiency deterioration value of conversion efficiency for the light-emitting device to convert a driving current supplied for a gradation value into a luminance to generate conversion efficiency deterioration characteristic information.
    Type: Grant
    Filed: December 12, 2011
    Date of Patent: October 28, 2014
    Assignee: Sony Corporation
    Inventors: Junichi Yamashita, Katsuhide Uchino
  • Patent number: 8866839
    Abstract: A signal adapting chromacity system to control that may include a signal conversion engine to receive a source signal designating a color of light defined by a two spatial plus luminance dimensional color space, such as the xxY color space. The signal conversion engine may convert the source signal to a three dimensional color space defined within a subset gamut of a full color gamut, such as an RGW, RBW, or GBW color space. The subset gamut may include a first color light, a second color light and a high efficacy light. The signal conversion engine may perform a conversion operation to convert the source signal to an output signal, using the output signal to drive light emitting diodes (LEDs). The conversion operation may be a matrix, angular or linear conversion operation.
    Type: Grant
    Filed: July 31, 2013
    Date of Patent: October 21, 2014
    Assignee: Lighting Science Group Corporation
    Inventors: Fredric S. Maxik, Robert R. Soler, David E. Bartine, Ran Zhou, Valerie A. Bastien, Matthew Regan, Eliza Katar Grove, Eric Bretschneider
  • Patent number: 8823009
    Abstract: The present invention provides a method for manufacturing a highly reliable display device at a low cost with high yield. According to the present invention, a step due to an opening in a contact is covered with an insulating layer to reduce the step, and is processed into a gentle shape. A wiring or the like is formed to be in contact with the insulating layer and thus the coverage of the wiring or the like is enhanced. In addition, deterioration of a light-emitting element due to contaminants such as water can be prevented by sealing a layer including an organic material that has water permeability in a display device with a sealing material. Since the sealing material is formed in a portion of a driver circuit region in the display device, the frame margin of the display device can be narrowed.
    Type: Grant
    Filed: June 1, 2012
    Date of Patent: September 2, 2014
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Shunpei Yamazaki, Satoshi Murakami, Motomu Kurata, Hiroyuki Hata, Mitsuhiro Ichijo, Takashi Ohtsuki, Aya Anzai, Masayuki Sakakura
  • Patent number: 8810765
    Abstract: An electroluminescence element includes an electroluminescence substrate including a thin film transistor substrate, and a light-emitting layer provided over the thin film transistor substrate and divided by picture-element separating portions so as to correspond to unit picture elements; and a sealing substrate arranged to hermetically seal the light-emitting layer of the electroluminescence substrate. At least one of the electroluminescence substrate and the sealing substrate is a flexible substrate. Spacers are provided between the electroluminescence substrate and the sealing substrate.
    Type: Grant
    Filed: January 11, 2008
    Date of Patent: August 19, 2014
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Tohru Okabe, Hirohiko Nishiki
  • Patent number: 8810162
    Abstract: An LED driver IC for driving external strings of LEDs comprises a prefix register and a data register connected in series with each other and with the prefix and data registers in other driver ICs. The prefix and data registers of the driver ICs are connected in a daisy chain arrangement with an interface IC. The interface IC loads data identifying a functional latch into the prefix register and data defining a functional condition into the data register of each driver IC. The data in the data register is then transferred to the functional latch to control the functional condition within the LED driver IC.
    Type: Grant
    Filed: January 10, 2012
    Date of Patent: August 19, 2014
    Assignee: Advanced Analogic Technologies, Inc.
    Inventors: Richard Kent Williams, Kevin D'Angelo, David A. Brown
  • Patent number: 8803773
    Abstract: A display apparatus is provided which is capable of improving display quality by expanding the light-emission area of pixels by improving the layout of pixels and common power-feed lines formed on a substrate. Pixels including a light-emission element, such as an electroluminescence element or an LED element, are arranged on both sides of common power-feed lines so that the number of common power-feed lines is reduced. Further, the polarity of a driving current flowing between the pixels and the light-emission element is inverted so that the amount of current flowing through the common power-supply lines is reduced.
    Type: Grant
    Filed: February 19, 2003
    Date of Patent: August 12, 2014
    Assignee: Intellectual Keystone Technology LLC
    Inventor: Tokuroh Ozawa
  • Patent number: 8803766
    Abstract: A large scale LED display has a cable and rigid link support structure for a number of LED modules. The cable and rigid link support structure is flexible but has sufficient structural integrity to prevent misalignment of the pixel modules. The LED modules are removable from the support structure individually and as a group so as to facilitate repair of the display. The LED modules are rugged so as to withstand harsh outdoor conditions and they provide sufficient luminescence for use in sunlight.
    Type: Grant
    Filed: March 21, 2011
    Date of Patent: August 12, 2014
    Inventors: Daniel S. Kline, Matthew W. Shankle, David F. Cox, James C. Lee, Sam R. Sarcia
  • Patent number: 8791884
    Abstract: There is provided a method of driving an organic light emitting display capable of displaying an image with uniform brightness. The method includes storing a brightness characteristic corresponding to emission time of an organic light emitting diode (OLED), adding first data supplied in units of frames by pixels to generate accumulated data, extracting accumulated data of a pixel to which currently supplied first data is to be supplied and calculating maximum brightness corresponding to emission time of the extracted accumulated data, calculating maximum brightness corresponding to emission time of largest accumulated data among the accumulated data, controlling a bit value of the first data using maximum brightness of a pixel to which the first data is to be supplied and maximum brightness of the largest accumulated data to generate second data, and controlling a voltage value of a first power source supplied to the pixels in response to the maximum brightness of the largest accumulated data.
    Type: Grant
    Filed: December 4, 2008
    Date of Patent: July 29, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventor: Do-Ik Kim
  • Patent number: 8786457
    Abstract: A message presentation method and system is disclosed. The method includes receiving by a computer processor of an electrical device, data associated with a function of the electrical device. The electrical device comprises light emitting devices. The computer processor generates an identification code identifying the function, a first bit signal associated with a first bit of the identification code, and a second bit signal associated with a second bit of the identification code. The computer processor transmits the first bit signal to a first light emitting device. The first bit signal results in the first light emitting device indicating the first bit signal as a first illuminated color.
    Type: Grant
    Filed: April 6, 2011
    Date of Patent: July 22, 2014
    Assignee: International Business Machines Corporation
    Inventors: Derek Kwan, Angela Yuen Ching Lee
  • Patent number: 8786216
    Abstract: An LED driver IC for driving external strings of LEDs comprises a prefix register and a data register connected in series with each other and with the prefix and data registers in other driver ICs. The prefix and data registers of the driver ICs are connected in a daisy chain arrangement with an interface IC. The interface IC loads data identifying a functional latch into the prefix register and data defining a functional condition into the data register of each driver IC. The data in the data register is then transferred to the functional latch to control the functional condition within the LED driver IC.
    Type: Grant
    Filed: January 10, 2012
    Date of Patent: July 22, 2014
    Assignee: Advanced Analogic Technologies, Inc.
    Inventors: Richard Kent Williams, Kevin D'Angelo, David A. Brown
  • Patent number: 8779696
    Abstract: An LED driver IC for driving external strings of LEDs comprises a prefix register and a data register connected in series with each other and with the prefix and data registers in other driver ICs. The prefix and data registers of the driver ICs are connected in a daisy chain arrangement with an interface IC. The interface IC loads data identifying a functional latch into the prefix register and data defining a functional condition into the data register of each driver IC. The data in the data register is then transferred to the functional latch to control the functional condition within the LED driver IC.
    Type: Grant
    Filed: January 9, 2012
    Date of Patent: July 15, 2014
    Assignee: Advanced Analogic Technologies, Inc.
    Inventors: Richard Kent Williams, Kevin D'Angelo, David A. Brown
  • Patent number: 8780178
    Abstract: Disclosed herein are a device and method for displaying 3D images. The device includes an image processing unit for calculating the location of a user relative to a reference point and outputting a 3D image which is obtained by performing image processing on 3D content sent by a server based on the calculated location of the user, the image processing corresponding to a viewpoint of the user, and a display unit for displaying the 3D image output by the image processing unit to the user. The method includes calculating the location of a user relative to a reference point, performing image processing on 3D content sent by a server from a viewpoint of the user based on the calculated location of the user, and outputting a 3D image which is obtained by the image processing, and displaying the 3D image output by the image processing unit to the user.
    Type: Grant
    Filed: December 16, 2010
    Date of Patent: July 15, 2014
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Eun-Jin Koh, Jong-Ho Won, Jun-Seok Park, Jeun-Woo Lee
  • Patent number: 8773336
    Abstract: Illumination devices and related systems and methods are closed that can be used for LCD (Liquid Crystal Display) backlights, LED lamps, or other applications. The illumination devices can include a photo detector, such as a photodiode or an LED or other light detecting device, and one or more LEDs of different colors. A related method can be implemented using these illumination devices to maintain precise color produced by the blended emissions from such LEDs. One application for the illumination devices is backlighting for FSC (Field Sequential Color) LCDs (Liquid Crystal Displays). FSC LCDs temporally mix the colors in an image by sequentially loading the red, green, and blue pixel data of an image in the panel and flashing the different colors of an RGB backlight. Precise and uniform color temperature across such a display can be advantageously maintained by continually monitoring ratios of photodiode currents induced by the different colored LEDs in each illumination device as each color is flashed.
    Type: Grant
    Filed: August 5, 2010
    Date of Patent: July 8, 2014
    Assignee: Ketra, Inc.
    Inventor: David J. Knapp
  • Patent number: 8773406
    Abstract: An organic electroluminescent display that can prevent decreases in an average luminance of an organic electroluminescent element thereof includes: a data line to supply a data signal; a scan line to supply a scan signal; a first switching element having a control electrode electrically coupled to the scan line, to transfer the data signal from the data line; a first driving transistor having a control electrode electrically coupled to the first switching element, to control a driving current of a first voltage line; a first capacitive element having a first electrode electrically coupled to the first voltage line and having a second electrode electrically coupled to a control electrode of the first driving transistor; an organic electroluminescent element, electrically coupled to the first driving transistor and a third voltage line, to display an image in response to a current supplied from the first driving transistor; and a second voltage line to supply a reverse bias voltage of a second voltage line to t
    Type: Grant
    Filed: April 26, 2007
    Date of Patent: July 8, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Sun A Yang, Byoung Deog Choi
  • Patent number: 8766880
    Abstract: A system and method are provided for a pixel module to determine its location in a large scale LED display. The system and method determine the pixel module's location based upon the data received by the module and the identity of the module's port via which the data was received.
    Type: Grant
    Filed: December 11, 2007
    Date of Patent: July 1, 2014
    Inventors: Hamid Kharrati, Robert J. Sefton
  • Patent number: 8766964
    Abstract: Provided is an image display device including: a pixel circuit; a power supply line; a data line for supplying a data signal to the pixel circuit; and a current path control unit. The pixel circuit includes: a light emitting element; a drive transistor for controlling a current flowing to the light emitting element; a storage capacitor provided between the data line and a gate electrode of the drive transistor, for storing a potential difference; and a data line connection switch for connecting one end of the storage capacitor on the gate electrode side of the drive transistor and the data line. Before the data line supplies the data signal, the data line connection switch is turned ON, and the current path control unit interrupts a current path from the power supply line to the one end of the storage capacitor.
    Type: Grant
    Filed: May 24, 2011
    Date of Patent: July 1, 2014
    Assignees: Japan Display Inc., Canon Kabushiki Kaisha
    Inventors: Shoji Yamamoto, Junichi Yokoyama, Masahisa Tsukahara
  • Patent number: 8760370
    Abstract: A lighting system including a plurality of luminaires capable of generating polychromatic light having a dominant wavelength in the visible spectrum and arranged into an array and a computerized device electrically coupled to the plurality of luminaires so as to selectively operate each individual luminaire to produce source light varying with each other and with time. The computerized device operates the luminaire such that each luminaire emits a source light, the source lights combining to form a combined light having selected characteristics. The source lights, when perceived directly, recreate a lighting scenario having varying lighting characteristics.
    Type: Grant
    Filed: December 10, 2012
    Date of Patent: June 24, 2014
    Assignee: Lighting Science Group Corporation
    Inventors: Fredric S. Maxik, David E. Bartine, Robert R. Soler, Addy S. Widjaja, Matthew Regan, Eliza Katar Grove
  • Patent number: 8754832
    Abstract: A system and method for accenting regions of a layer including a lighting system including a plurality of light sources operable to emit polychromatic light and a layer having two or more regions configured to diffusively scatter light within a wavelength range while absorbing light not within the wavelength range. The regions may be configured to represent recognizable characters or images, and may form a sequence. The lighting system may highlight the regions individually or simultaneously. The layer may be attachable to a surface and may further include non-highlighted regions. The system may also include appliqués applied to a surface and a cover layer transparent to certain wavelengths of light that the appliqués scatter.
    Type: Grant
    Filed: January 30, 2013
    Date of Patent: June 17, 2014
    Assignee: Lighting Science Group Corporation
    Inventors: Fredric S. Maxik, David E. Bartine, Robert R. Soler, Mark Andrew Oostdyk, Addy S. Widjaja, Matthew Regan