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| Number | Title | Issue Date |
| 7675239 | Power management method and device for low-power displays A device and method for supplying a display, such as a liquid crystal display, for example a bistable ChLCD, with drive voltages for extremely low power operation. The method and the device implementing the method provides an energy storage device and a voltage conv... | 03/09/2010 |
| 7652432 | Organic electro-luminescence device, driving method thereof and electronic apparatus An organic electro-luminescence (EL) device including at least an emission layer between an anode and a cathode that are opposed to each other, including an anode buffer layer that is composed of an electrically conductive material and is provided between the anode ... | 01/26/2010 |
| 7633233 | Digital control system for LCD backlights Present invention provides an apparatus and a method for digital control of a backlight system in an LCD display. More specifically, the system utilizes a control system in embedded firmware and a mixed signal micro controller unit (MCU) to allow servo digital contr... | 12/15/2009 |
| 7615932 | Reference current generating circuit, organic EL drive circuit and organic EL display device employing it An organic EL display device having an organic EL drive circuit has a reference current generation circuit that switches the column line drive in response to changing of the dot arrangement of R, G and B through changeover switch circuits. Three D/A converter blocks... | 11/10/2009 |
| 7609004 | Eliminating silver migration in EL lamps A net negative charge is used to eliminate silver migration in an EL lamp. An electrode containing silver, either the entire electrode, a bus bar on the electrode, or a contact area on the electrode, receives a net negative charge while the EL lamp is being driven w... | 10/27/2009 |
| 7605543 | Electro-luminescence display device and driving method thereof An electro-luminescence display device includes an electro-luminescence panel having a plurality of pixels at pixel areas defined by intersections between data lines and gate lines, each of the pixels including: an electro-luminescence cell connected to receive a su... | 10/20/2009 |
| 7586265 | Illumination device An illumination device is described that includes a light source that is an organic light-emitting diode and a control device capable of adjusting the current through the organic light-emitting diode, which increases current as the electric resistance of the organic... | 09/08/2009 |
| 7583033 | Plasma display panel driving circuit and plasma display apparatus A plasma display panel driving circuit for driving a plasma display panel which has a plurality of scan electrodes and sustain electrodes and operates as a capacitive load, by applying a different waveform in each of a reset period, address period and sustain period... | 09/01/2009 |
| 7583032 | Semiconductor device A light emitting device capable of performing signal electric current write-in operations at high speed and without dispersion in the characteristics of TFTs structuring pixels influencing the brightness of light emitting elements is provided. The gate length L of a... | 09/01/2009 |
| 7579781 | Organic electro-luminescent display device and method for driving the same An organic electro-luminescent display device according to an embodiment includes a light emitting device in a pixel to emit light in response to a current applied thereto; a data line for providing a data voltage in a write period and a ramp voltage in a display pe... | 08/25/2009 |
| 7567038 | Light and power cogeneration light device A light device adapted to light and power cogeneration projects at least one illumination light beam and divergent light beam by a specified power supplied from an external power source. The light device comprises an optical-to-electrical energy transformation unit ... | 07/28/2009 |
| 7557512 | Organic electroluminescent device and driving apparatus Provided is an organic EL device having a lower power consumption and high performance and enabling to display separate pictures on bidirectional screens as well as to display the same picture on the bidirectional screens, and a driving apparatus thereof. The organi... | 07/07/2009 |
| 7538496 | Display apparatus A display apparatus including a display panel to display an image and a back light illuminating the display panel, including an inverter to supply a driving power to the back light, a power supply to supply power to the inverter, a microcomputer to output a back lig... | 05/26/2009 |
| 7514877 | Display panel driving circuit A display panel driving circuit includes an input part for amplifying an input on-off signal so as to generate a first on-off voltage signal, a voltage signal generation part for generating a second on-off voltage signal which is varied in response to variations of ... | 04/07/2009 |
| 7501770 | Laser guided display device A laser beam, which scans a display screen comprised of an array of picture elements. Each picture element is further comprised of a photocell connected to an LED in the presence of an electric field. The laser's intensity and or duration on selected photocells prod... | 03/10/2009 |
| 7489085 | Backlight module actuation method A backlight module actuation method aims to modulate a unsaturated luminance cycle in a dimming cycle for a backlight module in the condition of a saturated luminance. An oscillation amplitude time series of the duty cycle of a transformer at the rear end is set acc... | 02/10/2009 |
| 7474061 | Organic electroluminescent display An organic electroluminescent display (“OELD”) includes an organic light-emitting diode (“OLED”) panel and a driving panel. The OLED panel includes an image display portion which displays an image using an OLED, and the driving panel includes a driving circu... | 01/06/2009 |
| 7459860 | Organic electroluminescence element and method for driving the element An organic electroluminescence element having a thin film of organic compound containing at least a light-emitting layer interposed between an anode and a cathode is disclosed. This element is driven by utilizing the sheet resistance of the anode or the cathode in a... | 12/02/2008 |
| 7459859 | Organic light emitting display having organic light emitting diode circuit with voltage compensation and technique thereof An organic light emitting diode circuit of an organic light emitting display with voltage compensation technique includes a first capacitor, a first TFT, a second TFT, a third TFT, a reset circuit and an OLED. The first TFT has a first terminal for receiving a first... | 12/02/2008 |
| 7456580 | Light emitting device Provided is a light emitting device. Particularly, the light emitting device comprises a threshold voltage compensator. The threshold voltage compensator is connected between a gate and a drain of the driving TFT and has a gate connected to a second scan line to tem... | 11/25/2008 |
| 7456579 | Light emitting device and production system of the same To provide a light emitting device without nonuniformity of luminance, a correcting circuit for correcting a video signal supplied to each pixel to a light emitting device. The correcting circuit is stored with data of a dispersion of a characteristic of a driving T... | 11/25/2008 |
| 7439679 | Method and apparatus for illuminating light sources within an electronic device A method and apparatus for controlling a plurality of light sources (102,103,104,105) in an electronic device (100) is provided. In one embodiment, the plurality of light sources (102,103,104,105) is used to backlight an illuminated display (... | 10/21/2008 |
| 7439943 | Electro-optical device, wiring substrate, and electronic apparatus The invention provides an electro-optical device in which a voltage drop due to the wiring resistance of a cathode is reduced and therefore steady image signals are transmitted such that erroneous image display, such as low contrast, is reduced or prevented. The inv... | 10/21/2008 |
| 7436378 | LED-switching controller and LED-switching control method An LED terminal monitoring circuit detects an LED at the lowest potential among a plurality of parallel-connected LEDs. An analog signal selecting circuit gives a signal indicating the voltage of the detected LED to a boosting circuit. The boosting circuit performs ... | 10/14/2008 |
| 7432885 | Active matrix display An active matrix display comprises a circuitry layer and a device layer having a planarizing layer therebetween on the glass substrate. The circuitry layer has pixel circuits defining pixel units and the device layer has organic EL devices defining the pixel units. ... | 10/07/2008 |
| 7432888 | Light emitting panel and light emitting display A display device including a plurality of scan lines provided in a first direction for transmitting select signals, a plurality of data lines provided in a second direction for transmitting data signals, and a plurality of pixel circuits respectively coupled to the ... | 10/07/2008 |
| 7432889 | Active matrix type display apparatus, active matrix type organic electroluminescence display apparatus, and driving methods thereof An active matrix type display apparatus of the present invention includes pixel circuits each having an electrooptic device that changes brightness thereof according to a current flowing therein and driving said electrooptic device on the basis of brightness data su... | 10/07/2008 |
| 7429969 | Method for driving a current-driven active matrix organic light emitting diode pixel A method for driving a current-driven Active Matrix Organic Light Emitting Diode (AMOLED) pixel, which provides a pre-charging signal (Pre-Charge) to drive the current source before the data of the AMOLED is updated. The capacitor is thereby discharged via the disch... | 09/30/2008 |
| 7425794 | Display device A display device of the present invention has light-emitting devices making up a plurality of pixels placed in a matrix form. In the display device of the present invention, the light-emitting devices each possesses an emissive layer and a reflective element placed ... | 09/16/2008 |
| 7423382 | Light-emitting body, light emitting device and light-emitting display A light-emitting body of the present invention includes an anode and a cathode at least partly facing the anode with the intermediary of a light-emitting material layer. An auxiliary electrode is formed, via an insulation layer, on the surface of the light-emitting ... | 09/09/2008 |
| 7423387 | Apparatus and method for controlling colour and colour temperature of light generated by a digitally controlled luminaire The present invention provides a method and apparatus for controlling the correlated colour temperature (CCT) or colour of light produced by an array of light-emitting elements by providing multiple selectable paths for the flow of drive current. The apparatus inclu... | 09/09/2008 |
| RE40490 | Method and apparatus for programmable field emission display A method and apparatus for programmable field emission display comprising an array of cathodoluminescent elements. Each cathodoluminescent element in the array is responsive to separate select signals to cause light to be emitted from said display at a location in t... | 09/09/2008 |
| 7423638 | Organic electroluminescent display, driving method and pixel circuit thereof Disclosed is an OELD and a pixel circuit which comprise: an organic EL element for emitting light corresponding to a supplied current; a first switch for switching data voltage supplied to a data line in response to a select signal supplied to a scan line; a first T... | 09/09/2008 |
| 7420530 | Pixel circuit, display device method for controlling pixel circuit A pixel electrode and a display device capable of lowering power consumption with a uniformity of luminance retained, and realizing a display image having a high contrast and a high image quality, wherein a correction period for correcting a variation in properties ... | 09/02/2008 |
| 7420529 | Organic EL panel drive circuit and organic EL display device A transistor for detecting current generated by an output side transistor of a current mirror circuit of an organic EL panel drive circuit and a control circuit including a current driven input stage and an output stage for driving the input side transistor of the c... | 09/02/2008 |
| 7417606 | Display apparatus and driving method for display apparatus A display apparatus includes light-emitting elements each of which is arranged for a pixel circuit and emits light at a luminance corresponding to a driving current. To a signal line through the pixel circuit, is supplied a gray level designation current having a cu... | 08/26/2008 |
| 7417379 | Cold cathode type flat panel display A cold cathode type flat panel display which is an image display device includes a vacuum panel container composed of a cathode substrate in which plural cold cathode type electron sources are arranged, an anode substrate, plural spacers for supporting the cathode s... | 08/26/2008 |
| 7417608 | Organic light emitting diode display and operating method of driving the same An organic LED (OLED) display device and an operating method of driving the same. In an OLED image display device, one switch transistor is provided in one pixel. For at least a part of an OFF period of time of the switch transistor, the OLED is in the non-light emi... | 08/26/2008 |
| 7417605 | Electronic circuit, electronic device, and electronic apparatus To provide an electronic circuit, an electronic device, and an electronic apparatus, which are suitable for shortening data writing time or decreasing power consumption five driving transistors having the same gain factor are connected in series to form a driving cu... | 08/26/2008 |
| 7414600 | Pixel current driver for organic light emitting diode displays A pixel current driver comprises a plurality of thin film transistors (TFTs) each having dual gates and for driving OLED layers. A top gate of the dual gates is formed between a source and a drain of each of the thin film transistors, to thereby minimize parasitic c... | 08/19/2008 |