Abstract: A method and system for compensation of non-uniformities in light emitting device displays is provided. The system includes a module for estimating degradation of an entire pixel circuit based on measurement of a part of the pixel circuit. Based on the estimation, a correction factor is produced to correct non-uniformity of the display.

Abstract: A display device and a driving method thereof are provided. The display device comprises a plurality of pixels, each pixel includes: a light emitting element; a storage capacitor; a driving transistor that has a control terminal, an input terminal, and an output terminal and supplies a current to the light emitting element to emit light; a first switching transistor for supplying a data voltage to the storage capacitor in response to a scanning signal; a second switching transistor for diode-connecting the driving transistor in response to a previous scanning signal; and a third switching transistor for supplying a driving voltage to the driving transistor in response to an emission signal, wherein the storage capacitor stores a control voltage depending on a threshold voltage of the driving transistor and a threshold voltage of the light emitting element through the diode-connected driving transistor, and transmits the control voltage and the data voltage to the control terminal of the driving transistor.

Abstract: An organic EL display apparatus includes: a display panel on which a plurality of pixel sections are provided; source drivers provided with pixel drivers, which includes current drivers for supplying drive currents to the pixel sections, registers for latching data signals and timing control units; signal lines for supplying the drive currents from the current drivers to the pixel sections. Each of the current drivers is controlled by the associated timing control unit to allow a current larger than or equal to a current which is set in accordance with the data signal to flow only during a given period in a current setting mode, so that the value of a current flowing in the pixel section reaches a target value in a short time.

Abstract: An image display system comprising a display panel is disclosed. The display panel, having a display region and a non-display region adjacent thereto, includes an upper substrate, a lower substrate opposing to the upper substrate, a plurality of organic light-emitting diodes on the lower substrate, and a filling layer. The upper substrate includes a light transmittable layer within the non-display region of the upper substrate, and the light transmittable layer has a transmittance at a specific wavelength of light. The filling layer including a light curable material is disposed between the upper and lower substrates, covering the display region and the non-display region of the lower substrate. The light curable material is cured by absorption of the specific wavelength of light.

Abstract: This invention is a new LED back lighting architecture that each individual LED is controlled by its associated LED drive cell. The LEDs are sequentially connected one after another. A host controller transmits image displaying signals by signal scanning-flows. The current flow for controlling each LED's color lighting is by either binary current flow control or two-steps progressive current flow control.

Abstract: A light source device capable of suppressing generation of color unevenness, and a display device using the same are provided. The light source device 1 is provided with a plurality of excitation light sources 11 which are arranged at prescribed intervals D on a substrate 10 and emit blue light, and a phosphor layer 12 which converts part of the blue light emitted from the excitation light sources into red light and green light and arranged at a distance from the excitation light sources 11 to oppose the substrate 10. Fluctuation of intensity of each color light due to nonuniform application of the phosphor layer is difficult to occur as compared with a configuration in the past where the phosphor layer is formed adjacent to each excitation light source.

Abstract: To provide a display device capable of allowing a light emitting element to emit light with a constant luminance while being free of an influence of deterioration over time and capable of accurate gradation display and high-speed writing of signal current to each pixel as well, in which an influence of noise causing leak current etc. is suppressed, and a driving method therefor. According to the present invention, plural pairs of switch portion and current source circuit are provided. Each of the plural switch portions is controlled in its switching operation according to a digital video signal. When the switch portion turns on, the current source circuit corresponding to the switch portion supplies current to allow the light emitting element to emit light.

Abstract: A method for driving a passive matrix organic light emitting diode (PMOLED) is provided. A pulse width modulation (PWM) constant current is provided to OLED pixels connected to a segment of a PMOLED array without voltage pre-charging the segment. Then, an offset value corresponding to missing gray scales of the OLED pixel is determined. According to the missing gray scales, the gray scales of the OLED pixel are rescaled starting from the offset. The OLED pixel is thus driven by a compensated PWM constant current having the rescaled gray scales during each horizontal line period.

Abstract: It is an object of the present invention to inhibit a collapse of a color balance possibly caused due to deterioration of self-emission elements when performing a color displaying by virtue of several different colors. A self-emission display apparatus comprises: a display element section consisting of self-emission elements; a monitor element section consisting of self-emission elements of different colors formed in the same manner as the self-emission elements of the display element section; a power supply circuit which supplies driving voltages to the display element section; monitor detecting units for detecting an operating state of the monitor element section; driving voltage control units which control driving voltages in accordance with a detected operating state; and a display control section for supplying display signal to the display element section.

Abstract: An apparatus and method for driving a liquid crystal display minimizes a gray loss of an image displayed on an RGBW-type display device, and enhances brightness and image quality. The apparatus for driving the LCD device includes: a liquid crystal panel including a plurality of unit pixels composed of 4-color sub-pixels; a data driver to transmit a video data signal to individual sub-pixels; a gate driver to transmit a scan pulse to the sub-pixels; a data converter to generate a histogram using a gray difference of input 3-color source data, to convert the 3-color source data into 4-color data according to a gain value extracted from the histogram, and to output the 4-color data; and a timing controller to transmit the 4-color data received from the data converter to the data driver and to control the gate driver and the data driver.

Abstract: According to a driving method of applying a reverse bias voltage, capacitance occurs due to a stacked structure of a conductor, an insulator and a conductor, or due to a structure of a TFT. This capacitance prevents normal operation. The invention provides a pixel configuration including at least a driving transistor for driving a light emitting element and a switching transistor for controlling the driving transistor, wherein the switching transistor is turned on in the case of applying a forward bias voltage after applying a reverse bias voltage. As a result, it is prevented that the potential changes due to unwanted capacitive coupling.

Abstract: This disclosure generally relates to display driver circuits for electro-optic displays, and more particularly relates to circuits and methods for driving active matrix organic light emitting diode displays with greater efficiency.

Abstract: 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 second sub-power lines Lr2, Lg2, and Lb2 are provided in the inside of the pixel region A so as to be connected to each other at sub-power line connecting points P. Further, the pixel circuits are connected to the first sub-power lines Lr1, Lg1, and Lb1 at pixel connecting points Q. The structure in which these power lines are arranged in a mesh shape enables a considerable reduction in voltage drop and the improvement of brightness unevenness.

Abstract: A display device is disclosed. The display device includes: a pixel array unit and a driving unit which drives the pixel array unit. The pixel array unit includes rows of first scanning lines and second scanning lines, columns of signals, pixels in a matrix state arranged at portions where the scanning lines and the signal lines cross each other and power supply lines and ground lines supplying power to respective pixels. The driving unit includes a first scanner performing line-sequential scanning to pixels by each row by supplying a first control signal to each first scanning line sequentially, a second scanner supplying a second control signal to each second scanning line sequentially so as to correspond to the line-sequential scanning and a signal selector supplying a video signal to rows of signal lines so as to correspond to the line-sequential scanning.

Abstract: A display device in which measurement emissive elements that emit light in accordance with a drive current are arranged in a matrix within a display region, the display device includes a measurement emissive element which is formed in a position different from the display region and formed by the same process as the organic EL elements formed in the display region; drive voltage supply circuit for supplying drive voltage to the measurement emissive element; and drive state detection circuit for detecting the drive state of the measurement emissive element in the case where the drive voltage is supplied by the drive voltage supply circuit.

Abstract: A design approach for a panel including a luminiferous unit and a driving unit. The luminiferous unit comprises first and second color components respectively constituting first and second light component sources. First and second light components are emitted from the first and the second light component sources. The color of the first light component differs from that of the second light component. The design approach comprises defining a specific relationship according to a characteristic between the first and the second color components; and designing the driving unit according to the specific relationship.

Abstract: A display LED drive circuit configured in such a manner that, for example, a constant current circuit, a green display LED circuit, and a red display LED circuit are connected in series and a resistor circuit having a resistor that generates a potential difference identical to the respective display LEDs is connected in parallel to the respective LED circuits. A corresponding switching element of the display LED circuit and a corresponding switching element of the resistor circuit connected in parallel are controlled to be opened and closed in opposite ways, another route connected to a source circuit in parallel is connected to the constant current circuit, a blue display LED circuit connected in parallel to the resistor circuit as described above, and a constant voltage diode in series, and a predetermined voltage is derived from an output terminal by the constant voltage diode and supplied to a control circuit.

Abstract: An organic light emitting display having color-specific demultiplexers is disclosed. Each demultiplexer receives a data signal for a specific color and sequentially supplies the data signals to sub-pixels for the specific color. Therefore, a data driving circuit supplying the data signal to the demultiplexer receives and successively processes only data of the specific color, so that power loss due to data charging/discharging operations is reduced when specific color sub-pixels of neighboring pixels receive the data signal corresponding to similar gray-scale voltages.

Abstract: A display apparatus includes an RGB-RGBX signal converter having a variable RGB-RGBX conversion ratio and configured to convert an RGB signal into an RGBX signal. An RGBX type self light-emitting display is configured to display video, based on the RGBX signal obtained by the RGB-RGBX signal converter. A controller is configured to control the RGB-RGBX conversion ratio utilized for converting the RGB signal into the RGBX signal, in accordance with a display position of the RGB signal.

Abstract: An organic light emitting diode display includes a pixel having a plurality of sub-pixels. Each of the plurality of sub-pixels includes a first sub-pixel having a first anode and a first organic emission layer, a second sub-pixel having a second anode and a second organic emission layer, and a third sub-pixel having a third anode and a third organic emission layer. The first, second, and third anodes satisfy the following condition: W ? ? 1 + W ? ? 2 < 2 ? W ? ? 3 < 2 3 ? P where W1, W2, and W3 respectively denote the width of the first anode, the width of the second anode, and the width of the third anode measured along a direction traversing the first sub-pixel, the second sub-pixel, and the third sub-pixel and where P denotes a width of the pixel measure along the direction traversing the first sub-pixel, the second sub-pixel, and the third sub-pixel.

Abstract: In an embodiment of the present invention, basic reference voltages VRT, VRB, VR, VG, and VB are divided by resistors to produce plural reference voltages V0 to V15, and voltages are selected from these plural reference voltages V0 to V15 for digital-analog conversion processing of image data DR, DG, and DB. At least the basic reference voltage VRB for the black level is shared by the respective color data DR, DG, and DB. The basic reference voltages VR, VG, and VB for setting of an intermediate grayscale closer to the black level can be varied individually for each of the color data DR, DG, and DB. When this embodiment is applied to a display device employing current-driven light-emitting elements such as organic EL elements, contrast deterioration due to floating black and sinking black can be prevented with a simple configuration.

Abstract: A light emitting diode (OLED) display and pixel driving method thereof are disclosed. Each storage capacitor is discharged via the driving TFT and OLED until conductive current of each OLED is almost zero so as to record a sum of a voltage drop across each OLED under a specific condition and the threshold voltage of the driving TFT. By using the sum of the voltage drop across each OLED and the threshold voltage of the corresponding TFT in the subsequent OLED driving process, the luminance reduction issue caused by TFT threshold-voltage shift and OLED material decay can be solved.

Abstract: It is an object of the present invention to provide a driver for a display panel in which a plurality of light-emitting elements are arranged in a matrix, which prevents false emission and/or destruction of the light-emitting elements from being caused when reset control is performed when scanning row lines included in the display panel. A cathode driver comprises a plurality of groups composed of a timing circuit and transistors that correspond to a plurality of cathode lines, respectively. Each of the timing circuits controls the timing for switching on the transistors, so that the potentials of all the cathode lines excluding the cathode line that is the target to be scanned are slowly changed from the ground potential to the power supply potential after the reset period elapses.

Abstract: A system and method for maintaining similar optical performance over two electronic displays. A color light sensor is placed in front of the viewable area of each electronic display and is used to measure one or more optical properties in order to balance the two (or more) electronic displays. The user may be notified when a display is malfunctioning or the displays are not performing within acceptable ranges. The display may store optical data locally for later retrieval by the user. The user may access the optical data through a network connection with the display. One or more displays may be placed adjacent to one another and their optical properties may be measured and balanced so that the displays match one another or can be used as a harmonious array.

Abstract: A programmable multi colored Light Emitting Diods (LEDs) rectangular display (panel) to replace the conventional traffic lights, the conventional traffic lights are generally vertically arranged consumes relatively alot of power and embedded into a bulky housing, the red light on top of the yellow light and the yellow light on top of the green light, the red light represents traffic must stop at an intersection, yellow light represents caution and green light represents traffic may pass, while in the new embodiment of the present invention a single rectangular LED display will provide the three traffic signal lights on the same area of the display consecutively,one after the other, in order to achieve this goal, the shapes of the three signal lights and the shapes of the arrow signal lights must be easily distinguishable for the color blind drivers.

Abstract: Disclosed is a method for addressing a display pixel and an electrical circuit arrangement for the display device. In some embodiments, the electrical circuit arrangement includes an input terminal for receiving a first signal; a first memory element for storing information about the first signal; a driver element coupled to the first memory element for outputting a second signal via an output terminal in accordance with the information about the first signal; and a calibration circuit coupled between the driver element and the input terminal for matching a potential difference between the driver element and the input terminal during a calibration phase prior to receiving the first signal.

Abstract: Emissive quantum photonic imagers comprised of a spatial array of digitally addressable multicolor pixels. Each pixel is a vertical stack of multiple semiconductor laser diodes, each of which can generate laser light of a different color. Within each multicolor pixel, the light generated from the stack of diodes is emitted perpendicular to the plane of the imager device via a plurality of vertical waveguides that are coupled to the optical confinement regions of each of the multiple laser diodes comprising the imager device. Each of the laser diodes comprising a single pixel is individually addressable, enabling each pixel to simultaneously emit any combination of the colors associated with the laser diodes at any required on/off duty cycle for each color. Each individual multicolor pixel can simultaneously emit the required colors and brightness values by controlling the on/off duty cycles of their respective laser diodes.

Abstract: A drive apparatus is provided which can calculate a suitable APL value when driving a color display panel using PLE control. Further, a drive apparatus is provided which can inhibit output capacity of a power supply circuit by controlling display brightness according to a lighting rate of a pixel. An APL calculation means 20 is provided with a weighting means 22A for performing weighting according to a light emitting current rate of each color at the time of displaying a gray scale with respect to a picture signal of each of the colors R, G, and B. Being averaged by an averaging means 23, each signal weighted by this weighting means 22A acquires an APL value. The peak brightness control means 29 is controlled using this APL value so that PLE operation of controlling a peak brightness of the picture signal is realized.

Abstract: In an EL display device in which color purity of each of red, blue and green is different, the EL display device displaying an image of a desired balance of red, blue and green is provided. A video signal supplied to each EL element is gamma (?)-corrected by a correction circuit, the color purity of each of blue luminescence, green luminescence, and red luminescence is suitably controlled in accordance with the voltage and current of the corrected video signal.

Abstract: A display device includes a substrate, a plurality of pixels formed over the substrate, each pixel including two or more sub-pixels, the plurality of pixels defining a display area, and a plurality of chiplets located over the substrate in the display area, each chiplet controlling sub-pixels of at least two adjacent pixels.

Abstract: A display associated with a treatment device for dental material, with which at least one operating state of the device can be displayed. The display is a function of the operating state of the device. The display shows different operating states of the treatment device exclusively with the aid of color signals, whereby each color is associated with an operating state of the device.

Abstract: Embodiments described herein provide LED displays. One embodiment of an LED display can comprise an array of white light units with each white light unit comprising a set of color light sources. The display can further include a controller electrically coupled to the white light units, the controller configured to control the white light units to alter the color of light produced by the white light units to produce images on the display. Another embodiment of a display can comprise an array of red light sources, green light sources and blue light sources configured to provide light to a color combiner in a desired half angle and a color combiner configured to combine light into a common plane for transmission to the projection optic.

Abstract: A method, medium, and apparatus compensating for differences in the persistence of phosphors in a display panel. The method of compensating for differences in persistence of phosphors in a display panel, having two or more light-emitting elements with different response characteristics, may include compensating for the response time of a first light-emitting element that represents the longest response time, selecting data response time for a second light-emitting element, which is different from the longest response time, and compensating for the differences in the persistence of phosphors due to a difference between the response times of the first light-emitting element and the second light-emitting element by compensating for the selected video data based on the compensated video data for the first light-emitting element.

Abstract: A method of compensating uniformity of an EL device, having a plurality of light-emitting elements, including providing the EL display; and measuring the performance of one or more light-emitting elements at three or more different code values. At least two different groups of code values are formed from the three or more code values, while calculating a linear transformation for converting an input signal to a compensated signal from the performance measurements for each of the groups. Subsequently, the difference between the measured performance and compensated signal is calculated over the range of code values for each of the groups; while the linear transformation, having a preferred difference, is selected. Additionally an input signal is received and employed with the selected linear transformation to calculate a compensated signal to drive the EL display.

Abstract: A pixel circuit for a light emitting display. Adjacent pixels of the light emitting display coupled to one scan line share one first power supply line. A driving circuit in each pixel circuit drives first and second organic light emitting diodes (OLEDs). A switching circuit is coupled between the first and second OLEDs and the driving circuit to sequentially control the driving of the first and second OLEDs. Because two adjacent pixel circuits share one pixel power supply line and a plurality of OLEDs are coupled to one pixel circuit, it is possible to reduce the number of pixel circuits and the number of wiring lines of the light emitting display. Other circuit elements may also be shared between adjacent pixel circuits. Reducing the wiring and other elements of the pixel circuits makes it possible to increase the aperture ratio of the light emitting display.

Abstract: In a method of driving a light source, light generated by a light source is sensed in order to detect color coordinates of a red color, color coordinates of a green color and color coordinates of a blue color. A light source color space formed by the color coordinates of the red, green and blue colors is compared with a reference color space formed by red reference color coordinates, green reference color coordinates and blue reference color coordinates. Then, color temperature of the light generated by the light source is controlled so that the light source color space covers the reference color space.

Abstract: A method of compensating uniformity of an OLED device, having a plurality of light-emitting elements, including providing the OLED display; and measuring the performance of one or more light-emitting elements at three or more different code values. At least two different groups of code values are formed from the three or more code values, while calculating a linear transformation for converting an input signal to a compensated signal from the performance measurements for each of the groups. Subsequently, the difference between the measured performance and compensated signal is calculated over the range of code values for each of the groups; while the linear transformation, having a preferred difference, is selected. Additionally an input signal is received and employed with the selected linear transformation to calculate a compensated signal to drive the OLED display.

Abstract: A computing device is disclosed. The computing device includes a housing having an illuminable portion. The computing device also includes a light device disposed inside the housing. The light device is configured to illuminate the illuminable portion.

Abstract: A color display unit is provided, which allows color display to be performed with high efficiency in utilizing light as compared with a prior type using all of RGB color filters. The color display unit includes a light source section having plural kinds of color LEDs, and includes a display section controlling transmissivity of light from the light source section in synchronization with light emission control by the light source section, to achieve desired color display. The display section has a full-color transmittable region and a partially transmittable region. The full-color transmittable region allows all color components of the light to be transmitted, while the partially transmittable region inhibits passage of one or more in the color components of the light. The display section controls the transmissivity of the light independently for each of the full-color transmittable region and the partial transmittable region.

Abstract: A display apparatus includes: a pixel array section including a row of scanning lines, a column of signal lines, and pixels in a matrix, with each of the pixels disposed at an intersection of both of the lines; and a drive section. The drive section performs line progressive scanning on the pixels. The pixel includes a light emitting device, a sampling transistor, a driving transistor, a switching transistor, and a holding capacitor. The sampling transistor samples a video signal in the holding capacitor, the driving transistor changes the device to a luminous state, the switching transistor becomes ON in advance of the sampling of the video signal to change the light emitting device to a non-luminous state, and the sampling transistor takes in the OFF voltage from the signal line to the driving transistor, thereby preventing a penetration current from flowing from the power source toward the fixed potential.

Abstract: A package structure of full-color LED (Light Emitting Diode) with driving mechanism includes an IC (Integrated Circuit) chip, a red LED dice, a green LED dice, a blue LED dice, and corresponding current limiting resistors. The IC chip has a driving mechanism to control the red LED dice, the green LED dice, and the blue LED dice. By the specific arrangement of these internal elements, the package structure generates full-color light with high resolution, compact structure and high mixing uniformity, and also achieves low cost and decreases usage of space.

Abstract: A plurality of organic light-emitting diode (OLED) control circuits, each circuit comprising three electrodes, a first electrode, a second electrode independently controlled from the first electrode, and a third electrode is connected in common with the third electrode from another OLED control circuit and independently controlled from the first and second electrode. Given a first and second OLED, the first electrode is connected to a first terminal of the first OLED, the second electrode is connected to a second terminal of the first OLED and to a first terminal of the second OLED, and the third electrode is connected to a second terminal of the second OLED. At least one bypass transistor, responsive to a bypass signal, connects the second electrode and third electrode.

Abstract: A method of driving a transistor, a driving element using the same, and a display panel and a display apparatus having the driving element are provided. The method for driving a transistor comprises: receiving a bias voltage at a first electrode of a driving transistor; outputting a first signal having a first polarity from a first electrode of a switching transistor to a capacitor and a control electrode of the driving transistor when a select line is activated for driving an organic display element; and outputting a second signal having a second polarity from the first electrode of the switching transistor to the capacitor and the control electrode of the driving transistor when the select line is activated for dissipating a charge in the driving transistor and for deactivating the organic display element.

Abstract: A display device capable of displaying an image selected by a user for a certain period of time without interruption even when power consumption to be used to completely display the image exceeds a remaining capacity of a battery, and a method of driving the same. The display device includes a storage element; a selection circuit configured to select an image stored in the storage element according to a user request; a battery; a first detection circuit configured to detect a remaining capacity of the battery; a controller; and a display panel coupled to the battery via the controller and configured to display the selected image in accordance with a control output of the controller.

Abstract: A method of determining driving signals for a four-color organic electroluminescence device is provided. The driving signals are for displaying a predetermined color. A three-color organic electroluminescence device is a reference. The method comprises: a) defining a value of a white signal equal to the lowest value of a red reference signal, a green reference signal and a blue reference signal; b) defining a value of a red signal equal to the value difference between the red reference signal and the white signal, defining a value of a green signal equal to the value difference between the green reference signal and the white signal, defining a value of a blue signal equal to the value difference between the blue reference signal and the white signal; and c) adjusting the values of the red signal, the green signal or the blue signal for compensating color shifting.

Abstract: A display apparatus can perform a high quality moving picture display and provides improved color purity, and includes an illumination device that prevents and minimizes light unevenness in the form of a lamp image. The display apparatus includes an illumination device in which a first scattering layer, a first light-condensing layer, a second scattering layer, and a second light-condensing layer are arranged so as to cover a light-radiating surface of a light source unit including a first light source that emits light of a first color and a second light source that emits light of a second color complementary to the first color, a gate driver arranged to sequentially select each one of scanning lines at a cycle of 0.

Abstract: This invention is a new LED back lighting architecture that each individual LED is controlled by its associated LED drive cell. The LEDs are sequentially connected one after another. A host controller transmits image displaying signals by signal scanning-flows. The current flow for controlling each LED's color lighting is by either binary current flow control or two-steps progressive current flow control.

Abstract: A power source for EL driving is built in an active matrix type EL display device, and the number of power sources externally attached is reduced. Therefore, the power source for EL driving is constructed by a transistor formed on a substrate, and its output circuit is constructed by a p-channel transistor of a source ground when the anode of an OLED is operated. Thus, the electric potential difference between a power voltage and an output voltage is reduced, and a power source circuit of small electric power consumption is constructed.

Abstract: A computing device is disclosed. The computing device includes a housing having an illuminable portion. The computing device also includes a light emitting device disposed inside the housing. The light emitting device is configured to produce a light effect that alters the ornamental appearance of the computing device.

Abstract: A read-only data storage and retrieval device is presented having no moving parts and requiring very low power. Addressing can be accomplished sequentially where the address increments automatically or can be accomplished randomly. High density storage is achieved through the use of a highly symmetric diode matrix that is addressed in both coordinate directions; its symmetry makes the Dual-addressed Rectifier Storage (DRS) Array very scaleable scalable, particularly when made as an integrated circuit. For even greater storage flexibility, multiple digital rectifier storage arrays can be incorporated into the device, one or more of which can be made removable and interchangeable.