Did You Know...
...that the Eveready Battery began as an invention called the "electric flowerpot," which was a tube with a battery and light bulb inside? The idea was to fasten this gizmo to the side of a flowerpot so it would illuminate the flowers from the bottom. The idea died on the vine and the businessman who licensed the flower pot, Conrad Huber, was left with a pile of useless tubes -- until he found a way to market them as batteries to light the world!
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| Number | Title | Issue Date |
| 7557780 | Electronic device and driving method thereof A pixel is provided in which normal display of an image is possible even if a sustain period is shorter than an address period in a driving method combining digital gray scales and time gray scales, and in which operation can be compensated by changing the electric ... | 07/07/2009 |
| 7557779 | Display device A display device in which the current load of wirings are distributed and display variations due to voltage drop are suppressed. An active matrix display device of the invention comprises a first current input terminal, a second current input terminal, and a plurali... | 07/07/2009 |
| 7557778 | Display device and control circuit for a light modulator The invention relates to an active-matrix image display device that comprises an array of light emitters. Each light emitter is controlled by a current modulator having a particular trip threshold voltage. The device also includes compensation means for compensating... | 07/07/2009 |
| 7554512 | Electroluminescent display devices An active matrix electroluminescent display device has a current sampling resistor within each pixel in series with the display element. A feedback signal represents the voltage drop across the current sampling resistor and the pixel drive signals are modified in de... | 06/30/2009 |
| 7551152 | Display and method of driving pixel In a pixel circuit formed by using a MOS process, a constant current is applied from a second transistor (T2) as a constant current source to an organic EL device coupled to a third transistor (T3) so that the organic EL device emits light, during the ... | 06/23/2009 |
| 7551151 | Electronic circuit, electroluminescent display device, electro-optical device, electronic apparatus, method of controlling the current supply to an organic electroluminescent pixel, and method for driving a circuit The invention provides an electronic circuit that can include a programming path and a reproduction path. The circuit can further include a current driven element, a transistor in the production path arranged so as to operatively control a current supplied to the cu... | 06/23/2009 |
| RE40738 | Active matrix electroluminescent display and method of operation An active matrix electroluminescent display (AMELD) having an improved light emitting efficiency and methods of operating the AMELD to produce gray scale operation comprises a plurality of pixels, each pixel including a first transistor having its gate connected to ... | 06/16/2009 |
| 7545348 | Pixel unit and display and electronic device utilizing the same A pixel unit. A first thin film transistor comprises a first control terminal receiving a scan signal, a first electrode receiving a data signal, and a second electrode. A second thin film transistor comprises a second control terminal coupled to the second electrod... | 06/09/2009 |
| 7545349 | Display device and display module of movable body A display device includes a display panel that has a plurality of pixels disposed in a matrix so as to correspond to intersections of a plurality of scanning lines and a plurality of data lines and a plurality of light-emitting elements provided in each of the plura... | 06/09/2009 |
| 7545347 | Electro-optical device and electronic apparatus To improve the unevenness of brightness. A plurality of pixel circuits is arranged in a pixel region A. Main power lines LR, LG, and LB are provided in the outside of the pixel region A. In addition, first sub-power lines Lr1, Lg1, and Lb1 and s... | 06/09/2009 |
| 7542018 | Light emitting device and drive method thereof The reliability of an EL element is enhanced while the increase of the electric power consumption is suppressed. It becomes possible that in a SES drive, the reverse bias is applied to the EL element driven at a constant electric current. Moreover, the application o... | 06/02/2009 |
| 7542017 | Display device A display device includes linear structures each having a first conductor linearly extended and a light emitting layer structure which covers at least a part of the conductor, the linear structures being arranged in parallel. The linear structures are electrically i... | 06/02/2009 |
| 7535440 | Light emitting device A light emitting element, in which voltages having different polarities are applied alternately in order to prevent the accumulation of electric charge in an organic compound layer of the light emitting element, and in which light is always emitted, no matter whethe... | 05/19/2009 |
| 7535441 | Display driver circuits Display driver circuits are described for driving organic light emitting diode displays, particularly passive matrix displays, with greater efficiency. The display drivers comprise a controllable current generator to provide a variable current drive output to an OLE... | 05/19/2009 |
| 7535442 | Pixel circuit, display and driving method thereof The invention provides a pixel circuit that allows simultaneous correction of both influence of the threshold voltage of a drive transistor and influence of the mobility of the drive transistor. Correction means is connected to a drive transistor and a capacitance p... | 05/19/2009 |
| 7532181 | Visible and invisible image display A display for producing either visible or invisible images to the human eyes comprising a plurality of pixels wherein each of the pixels includes one or more visible radiation subpixels capable of producing visible radiations to the human eyes and at least one invis... | 05/12/2009 |
| 7528809 | Organic light emitting display An organic light emitting display for minimizing or preventing nonuniformity in image quality includes a first transistor having a gate electrode connected to a first selection signal, a source electrode connected to a data signal, and a drain electrode connected to... | 05/05/2009 |
| 7528807 | Power supply and driving method thereof and apparatus and method for driving electro-luminescence display device using the same The present invention relates to a power supply that is adaptive for improving energy conversion efficiency and a driving method thereof and an apparatus and method for driving an electroluminescence display device using the same. A power supply that supplies a driv... | 05/05/2009 |
| 7528808 | Pixel circuit It is known to compensate for threshold voltage variation of driving transistors in pixel circuits that drive light emission devices such as current driven organic light emission devices. However, programming and initialization of such pixel circuits can be slow and... | 05/05/2009 |
| 7525522 | Display apparatus A scanner repeats a threshold voltage correcting process over a plurality of horizontal periods prior to the sampling of a signal potential to hold a voltage corresponding to the threshold voltage of a driving transistor reliably in a retentive capacitor. Each signa... | 04/28/2009 |
| 7525520 | Electronic circuit, electro-optical device, method of driving electro-optical device, and electronic apparatus To an organic EL element of a pixel circuit provided in association with an intersection of a scanning line and a data line, a driving current in accordance with digital data or an analog data current is supplied via the data line. When halftones are controlled by d... | 04/28/2009 |
| 7525521 | Display device, semiconductor device, and electronic device When an electrical characteristic of the TFT varies, display unevenness such as brightness unevenness or gradation unevenness is occurred in a display image. According to the present invention, a display device in which variation of an electrical characteristic of a... | 04/28/2009 |
| 7522133 | Light emitting panel and light emitting display A light emitting display includes a pixel circuit. The pixel circuit includes a power electrode line, a capacitor for charging a voltage corresponding to a data signal, a driving transistor for outputting a current corresponding to the voltage charged in the capacit... | 04/21/2009 |
| 7518580 | Light emitting display, display panel, and driving method thereof A light emitting display for compensating for the threshold voltage of transistor or mobility and fully charging a data line. A transistor and first through third switches are formed on a pixel circuit of an organic EL display. The transistor supplies a driving curr... | 04/14/2009 |
| 7518577 | Image display device An image display device which has a stable luminous brightness among pixels. An on/off control switch 15 for stopping the driving operation of a light emitting element 13 is provided in a pixel 1. A change in the luminous brightness caused by a ... | 04/14/2009 |
| 7518578 | Demultiplexer and display device using the same A display device includes a demultiplexer. The demultiplexer programs time-divided and sequentially input data currents to at least two signal lines. The demultiplexer includes first and second sample/hold circuits for alternately sampling data currents and holding ... | 04/14/2009 |
| 7518579 | Light emitting panel and light emitting display A display device including scan lines provided in a first direction for transmitting select signals, data lines provided in a second direction for transmitting data signals, and pixel circuits respectively coupled to the scan lines and the data lines. At least one o... | 04/14/2009 |
| 7515124 | Organic EL drive circuit and organic EL display device using the same organic EL drive circuit An amplifier circuit for generating a predetermined constant voltage required for resetting organic EL elements or capacitors is provided and an operating current switching circuit switches the operating current of the amplifier circuit to an idling current in a dis... | 04/07/2009 |
| 7515123 | Display apparatus A display apparatus includes a driving circuit mounted on a board, and a coating film which coats the driving circuit. A display unit having a plurality of optical elements are arrayed on the coating film as pixels and being driven by the driving circuit. Each of th... | 04/07/2009 |
| 7515121 | Light emitting element display apparatus and driving method thereof A display apparatus includes signal lines to each of which a current is supplied to obtain an arbitrary current value, optical elements each optical behaving in accordance with the current value of the current flowing via the signal line, and a stationary voltage su... | 04/07/2009 |
| 7515122 | Color display device with enhanced pixel pattern A color display device, comprising: an array of subpixels of at least four different colors, including at least two relatively higher luminous color subpixels and at least two relatively lower luminous color subpixels, wherein the subpixels are arranged into groups ... | 04/07/2009 |
| 7515125 | Light emitting module and method of driving the same, and optical sensor The object of the present invention is to provide a light emitting module which is excellent in visibility and can reduce power consumption. The light emitting module includes a light emitting device containing at least a pixel section 101 and a sensor... | 04/07/2009 |
| 7511687 | Display device, electronic apparatus and navigation system A plurality of pairs of switch parts and current source circuits are disposed in each pixel. Switching of each of a plurality of the switch parts is controlled by a digital video signal. When the switch part is turned on, by a current supplied from the current sourc... | 03/31/2009 |
| 7511688 | Electro-luminescence display The present invention relates to an electro-luminescence display that is adaptive for reducing its manufacturing cost as well as reducing its process time. An electro-luminescence display device according to an embodiment of the present invention includes a g... | 03/31/2009 |
| 7511689 | Display device, method for driving the same, and electronic apparatus A display device includes a pixel array unit and a peripheral circuit unit. The pixel array unit includes first scanning lines arranged in rows; second scanning lines arranged in rows; signal lines arranged in columns; and pixels arranged in a matrix pattern at inte... | 03/31/2009 |
| 7508365 | Pixel circuit and organic light emitting display using the same A pixel circuit and an organic light emitting display using the same that decrease crosstalk due to a leakage current in an off-region of a pixel switching device to an undetectable (or invisible) level, and compensate for a variation in threshold voltages within it... | 03/24/2009 |
| 7508361 | Display device and method including electtro-optical features A display device, and method of driving the same, enabling stable and accurate supply of a current having a desired value to the light emitting element of each pixel without regard not only to variation of the threshold values of the active elements inside the pixel... | 03/24/2009 |
| 7508362 | Electronic circuit, method of driving the same, electro-optical device, and electronic apparatus To reduce time for writing a target voltage in the gate of a driving transistor. In a first period, a transistor 211 is switched on to allow a driving transistor 210 to function as a diode and transistors 212 and 213 are switched on to el... | 03/24/2009 |
| 7508363 | Data driver circuit for display device and drive method thereof The data driver circuit for display device comprising an expansion hold circuit, that expands and holds a plurality of serially inputted digital image signals in parallel a first current driver circuit that is connected to the expansion hold circuit and comprises a ... | 03/24/2009 |
| 7508364 | Image display device A image display device includes a driving unit that includes a first terminal and a second terminal, and controls current flowing through a light emitting unit based on a potential difference applied between the first terminal and the second terminal. The potential ... | 03/24/2009 |
