Abstract: A pixel arrangement structure for an organic light emitting display including a plurality of sub-pixel groups repeatedly arranged, wherein each of the sub-pixel groups includes: four first sub-pixels for emitting light of a first color and each having a hexagonal structure, two second sub-pixels for emitting light of a second color and each including two hexagonal structures sharing one side, and two third sub-pixels for emitting light of a third color and each including two hexagonal structures sharing one side. Two of the four first sub-pixels are arranged in a same column and share a symmetrical axis, and the two second sub-pixels and the two third sub-pixels are alternately arranged on either side of the symmetrical axis.

Abstract: A display device includes a display area having a plurality of data lines, a plurality of first scan lines, a plurality of second and third scan lines, and a plurality of pixel areas. In addition, the display device includes a first driver, a second driver, and a third driver. At least two pixels sharing a data line and a first scan line are formed in at least one of the pixel areas. At least one of the pixels of a first group among the pixels formed in the at least one pixel area is emitted by a first emission signal in a first field, and at least another one of the pixels of a second group are emitted by a second emission signal in a second field.

Abstract: After a sampling transistor is turned ON at a first timing when a control signal has risen, during a sampling period from a second timing when a video signal has risen from a reference potential to a signal potential to a third timing when the control signal has fallen and is turned OFF, the sampling transistor samples and writes the signal potential in a holding capacitance, and negatively feeds back a current flowing into a drive transistor during the sampling period to the holding capacitance and applies mobility correction of the drive transistor on the written signal potential. A signal driver adjusts the second timing for the video signal supplied to respective signal lines to correct a backward shift of the third timing due to a transmission delay along a scanning line of the control signal output from the control scanner.

Abstract: An organic light emitting diode display that includes a pixel unit including a plurality of scanning lines, a plurality of data lines, a plurality of first control lines, a plurality of second control lines, a first power source, a second power source and a third power source, a pixel unit including a plurality of pixels connected to the scanning lines, the data lines, the first control lines, the second control lines, the first power source, the second power source, and the third power source, a control line driving unit configured to provide each of said pixels with a first control signal and a second control signal through the first control lines and the second control lines respectively, a scan driving unit configured to provide each of said pixels with scanning signals through the scanning lines and a data driving unit configured to provide each of said pixels with data signals.

Abstract: In an image display apparatus, each sub-pixel includes a phosphor configured to emit light of a predetermined color when the phosphor is irradiated with electrons, an electron emission device configured to irradiate the phosphor with the electrons, and a resistor connected in series to the electron emission device and having a negative temperature characteristic of resistance. In three or more sub-pixels with different luminescent colors included in each pixel, the resistor is configured such that a sub-pixel having a phosphor with a smaller temperature dependency of luminescent brightness has a resistor with a greater activation energy, or the resistor is configured such that the resistor is made of the same material for the three or more sub-pixel and such that a sub-pixel having a phosphor with a smaller temperature dependency of luminescent brightness has a resistor with a greater resistance.

Abstract: A light source panel according to an embodiment includes a plurality of light-emitting parts having a plurality of light-emitting substances to be divided into a predetermined number of partial areas. A light source driving part provides each of the light-emitting substances with a current. An adaptive dimming control part receives an image signal from an external device and sets the light-emitting parts into a first dimming block corresponding to a first color class of the first image signal or a second dimming block corresponding to a second color class of the first image signal to control the backlight assembly, in order to prevent color artifacts from being generated at a boundary area between the first dimming block and the second dimming block, the adaptive dimming control part controlling the backlight assembly, so that the first dimming block performs a second dimming operation.

Abstract: A display device includes a plurality of sub-pixels configured to display a plurality of colors including white. Each of the sub-pixels includes a self-luminous element configured to emit light by receiving supply of electric current, an input unit configured to input a luminance signal for determining luminance of the self-luminous element into the sub-pixel, and a control unit configured to control the supply of electric current to the self-luminous element. An area of light emission in each of the sub-pixels for the white is larger than an area of light emission in each of the sub-pixels for the other colors.

Abstract: Disclosed examples of optical systems having a plurality of light sources with each source having a different spectral outputs may be calibrated by measuring a spectral characteristic of the combined light with two measurements, e.g., one from a colorimeter and one from a sensor included in the system. Accordingly, one can determine a transform function in response to the two measures that models a feedback response of the optical system for each of a plurality of the inputs that would cause the optical system to generate radiant energy within a predetermined range of a spectrum. In order to calibrate the optical system, the transform function is programmed in the optical system to enable the optical system to transform an input to the optical system to a plurality of unique control signals each for controlling a respective light source of the plurality of light sources.

Abstract: An organic light emitting display and a driving method thereof, in which an image is displayed with uniform brightness.

Abstract: A louver panel for an electronic sign incorporating multiple spaced primary and secondary louvers extending outwardly from a configured substantially planar panel to provide direct shading of the structure adjacent to an LED, to the structure of the louver panel including the louvers and the panel, and to provide shading for all or part of an LED. Spacings of the louvers provide for regions of shade which improve contrast and which in transition between panels camouflage horizontal seams.

Abstract: A 2D image display apparatus using a laser light source. By controlling the timing of a scan by a beam scan portion in response to the characteristic of a laser light source and by setting a light emitting time of the laser light source to an integral multiple of a scan cycle of the beam scan portion, it is possible to illuminate a spatial light modulator homogeneously with a laser beam. It is thus possible to display an image at high accuracy without causing a bright line, irregularities in brightness, and contrast deterioration.

Abstract: An LED display system comprises an LED array and an LED driver circuit. An LED driver circuit comprises components including a phase lock loop, a pulse width modulation engine, a configuration register, a series of gain adjustable fast charge current sources, and a serial input/output interface. The components in this driver circuit may be integrated on a same chip. The LED array may be arranged in a common cathode configuration.

Abstract: An LED display system comprises an LED array and an LED driver circuit. An LED driver circuit comprises components including a phase lock loop, a pulse width modulation engine, a configuration register, a gain adjustable fast charge current source, and a serial input/output interface. The components in this driver circuit may be integrated on a same chip. The LED array may be arranged in a common cathode configuration.

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 provides an image display system that includes an image display device having an overdrive processing circuit and allows reduction in memory cost as a whole. The image display system according to this invention includes an image generation device that generates image data, and an image display device that receives the image data from the image generation device, performs overdrive processing based on the received image data, and displays an image. The image generation device includes a rendering circuit that generates image data to be outputted to the image display device for every frame, a memory unit that holds the plural pieces of image data corresponding to at least two frames among the plural pieces of image data generated by the rendering circuit, and a transfer circuit that transfers the plural pieces of image data corresponding to two frames among the plural pieces of image data held by the memory unit to the image display device within one frame period.

Abstract: In an organic light emitting diode display, a plurality of sub-pixels sharing a select scan line that extends in a row direction forms a unit pixel, and the plurality of sub-pixels are arranged in a column direction in the unit pixel. A field is divided into a plurality of subfields, and corresponding one of the plurality of sub-pixels emits light in each of the plurality of subfields.

Abstract: In an organic light emitting display and its driving method, a pixel portion includes a plurality of pixels which express images corresponding to a scan signal, an emission control signal, and a data signal. A scan driver transfers the scan signal and the emission control signal to the pixel portion. A data driver generates and transfers a plurality of data signals to the pixel portion using video data. A frame memory stores and transfers the video data in frame periods to the data driver. A luminance controller determines a pulse of the emission control signal using frame data, which is a sum of video data stored in the frame memory. A power supply unit supplies voltages of first and second power sources to the pixel portion. The luminance controller determines the number and widths of pulses in the emission control signal corresponding to a sum of the video data.

Abstract: A display apparatus including a pixel array section, and a driving section configured to drive said pixel array section having pixels respectively including a drive transistor and light emitting element. A first time correction for the mobility of the drive transistor is applied, and then a second time correction for additional correction time is applied if the signal potential of an image signal is not high.

Abstract: An emission apparatus includes an emission element, a pixel drive circuit connected to the emission element, a data line connected to the pixel drive circuit, and an emission drive apparatus that, in a selection period, lets a reference current with a predetermined current value flow to the pixel drive circuit via the data line, derives a compensation voltage which is a difference between a potential which varies according to a unique characteristic of the pixel drive circuit and a predetermined reference potential, and generates a correction gradation voltage to be applied to the pixel drive circuit based on the compensation voltage for causing the emission element to emit light at an appropriate luminance gradation.

Abstract: Systems and methods for controlling the output of a plurality of light sources. The system can include four or more light sources (e.g. light emitting diodes (“LEDs”)) and a controller. The light sources are included in, for example, a luminaire. The respective outputs of the plurality of light sources are controlled using a hue and purity (“HP”) control technique. The HP technique includes selecting a dominant hue (e.g., green, blue, red, etc.). The purity of the selected hue is then modified to include or remove wavelengths of light adjacent to the selected hue. For example, if the selected hue is green, gradually reducing the purity of the selected hue gradually increases the presence of cyan and amber in the output of the luminaire. As the purity is reduced further, additional wavelengths of light are included, but the output of the luminaire remains, in essence, green.

Abstract: An apparatus for driving light emitting elements includes a constant-current driver arranged for each of arrays of light emitting elements including a constant-current drive element and a current regulator; a first selector configured to select one having a highest signal level from among control signals of the constant-current drivers and output the selected control signal; a second selector configured to select a lowest one from among output voltages of the constant-current drivers and output a signal representative of the selected output voltage; a differential amplifier configured to output an amplified differential signal that is obtained by amplifying a difference between the signals output from the first and second selectors; and a power source circuit configured to control, according to the amplified differential signal, a voltage supplied to a second end of each of the arrays of light emitting elements.

Abstract: A backlight adjustment device includes a color saturation generation unit, a gain generation unit, and an adjustment unit. The color saturation generation unit is used for receiving red, green, and blue sub-pixels of an RGB pixel, and generating a color saturation of the RGB pixel according to the red, green, and blue sub-pixels of the RGB pixel. The gain generation unit is used for generating a gain of the RGB pixel according to the color saturation of the RGB pixel. The adjustment unit is used for adjusting a backlight source according to an average of gains of a plurality of pixels.

Abstract: The backlight device includes: a backlight including a plurality of light sources; and a backlight control part. The backlight includes a plurality of divided areas, and light sources disposed in each of the plurality of divided areas are chain-connected. The backlight control part includes at least one backlight control unit for controlling turning on and off of the backlight which includes the plurality of divided areas, with respect to the each divided area. The backlight control unit includes a selection unit for selecting one of divided areas, at least one backlight drive path. The selection unit selects the one of divided areas in a time division manner, and the light sources of the one of divided areas are driven by sharing the at least one backlight drive path in common.

Abstract: An organic light emitting device according to one or more embodiments includes a gate line, a data line intersecting the gate line, a switching thin film transistor connected to the gate line and the data line, a driving thin film transistor connected to the switching thin film transistor, and a light emitting diode (LED) connected to the driving thin film transistor. The switching thin film transistor includes a control electrode connected to the gate line, a crystalline semiconductor overlapping the control electrode, and an input electrode and an output electrode are spaced apart from each other on the crystalline semiconductor, wherein the control electrode and the gate line are respectively disposed under and on the crystalline semiconductor and include different materials.

Abstract: Pixel interleaving configurations for use in high definition electronic sign displays where each and every scan line includes full red, green, and blue color representation to provide for high resolution electronic video sign displays.

Abstract: There is provided apparatus for controlling a set of light emitting diodes (LEDs) comprising at least one current source for powering the set of LEDs; a main controller for receiving dimming and/or color mixing information and for translating the information into LED control information and transmitting the LED control information to control the set of LEDs; wherein the LED control information is based on and off times.

Abstract: An information processing terminal device includes a state monitoring unit that monitors whether or not there exits an unread e-mail or a missed call, a light order control unit that makes an emitting unit emit a color corresponding to each sender in a given order when the unread e-mail or the missed call is detected, where a light order control unit determines a light order of the colors according to a receiving order of the unread e-mail or an incoming order of the missed call.

Abstract: A circuit for an element of a light-emitting display is proposed. The element comprises a current control means, first and second switching means and a light-emitting means. In one embodiment, a signal holding means is provided. The arrangement of the first and second switching means of the element makes it possible to measure the electrical parameters of the current control means and of the light-emitting means during operation. A light-emitting display having a plurality of elements is furthermore proposed. The light-emitting display has a control circuit and a memory. The measured values of the electrical parameters of the current control means (4) and of the light-emitting means of the elements are used to correct the control signal S that is used to drive the elements. This enables a uniform brightness distribution in the case of voltage actuation and makes it possible to compensate for temporal changes in the light-emitting means.

Abstract: Luminosity of individual LED light sources is measured and a forward voltage control of each LED is set so that each LED has a pre-determined (e.g., uniform) luminosity at a same modulation level. The LEDs are then driven via a modulation technique such as PWM, PCM, polyphase, etc. according to lighting requirements. The LEDs are, for example, a backlight of a dual modulation HDR LCD display system, and the lighting requirements are local dimming signals for the display.

Abstract: A signal line driving circuit which includes a digital signal sampling circuit, a storage circuit, a time setting circuit and a constant current circuit, is fabricated of TFTs on an insulating substrate which is made of the same substance as that of a pixel portion substrate. Thus, in a passive type EL display device, the problem of a distortion in the case of bonding the signal line driving circuit onto the pixel portion substrate can be eliminated. Besides, in an active type EL display device, each pixel is constructed of one transistor and an EL element. Thus, the aperture factor of the EL display device is enlarged.

Abstract: In a pixel circuit 100, a switching TFT 114, a driving TFT 110, and an organic EL element 130 are provided between a power supply wiring line Vp and a common cathode Vcom and a capacitor 121 and a switching TFT 111 are provided between a gate terminal of the driving TFT 110 and a data line Sj. A switching TFT 112 is provided between a connection point A between the capacitor 121 and the switching TFT 111 and a power supply wiring line Vr, a switching TFT 113 is provided between the gate and drain terminals of the driving TFT 110, and a capacitor 122 is provided between the gate terminal of the driving TFT 110 and the power supply wiring line Vr. Thus, a display device is provided that can freely set a period during which variations in the threshold voltage of a drive element are compensated for, and performs high-quality display by holding a control terminal potential of the drive element during light emission from an electro-optical element.

Abstract: An inexpensive light emitting device capable of displaying a bright image and an electric appliance using the light emitting device. In the light emitting device having a pixel portion and a driver circuit formed on one insulating member, all of semiconductor elements for the pixel portion and the driver circuit are formed by n-channel semiconductor elements, thereby enabling the manufacturing process to be simplified. Each of light-emitting elements provided in the pixel portion emits light in such a direction that most of the light travels away from the insulating member, so that substantially the whole of the pixel-forming segment electrode (corresponding to a cathode of an EL element) is formed as an effective light-emitting area. Therefore, a low-priced light-emitting device capable of displaying a bright image can be obtained.

Abstract: An apparatus for driving a backlight includes: a pulse width modulation signal phase shifting unit that shifts phases of at least one of red, green, and blue pulse width signal modulation signals so as to output at least one of phase-shifted red, green, and blue pulse width signal modulation signals; red, green, and blue light emitting diode arrays, each of which includes a plurality of light emitting diodes; and at least one light emitting diode driving unit driving one of the red, green, and blue light emitting diode arrays by using one of the phase-shifted red, green, and blue pulse width signal modulation signals.

Abstract: The inventors found out that in the case of performing a low gray scale display in which a very small amount of current is supplied to a light emitting element, variations in threshold voltages of driving transistors become notable since the gate-source voltage is low. In view of this, the invention provides a display device in which variations in the threshold voltages of the driving transistors are reduced even in the low gray scale display, and a driving method thereof. According to the invention, a gate-source voltage of the driving transistor is set higher in the low gray scale display than that in the high gray scale display. As one mode to achieve this, different power source lines are provided for the low gray scale display and the high gray scale display and their potentials are set to be different.

Abstract: A circuit arrangement includes a first light emitting diode and a second light emitting diode emitting light of different colors arranged adjacent to each other for additive color mixing. A first and second controllable current sources are connected to the first and second light emitting diode, respectively, such that the load currents of the light emitting diodes depend on respective control signals received by the current sources. First and second sigma-delta modulators are connected to the first and second light emitting diodes, respectively, and provide bit-streams as control signals to the current sources. The mean value of each bit-stream corresponds to the value of an input signal of the respective sigma-delta modulator.

Abstract: Degradations in light emitting elements occur with the passage of time. A method of driving a light-emitting device is characterized by including the steps of: supplying a light-emitting element with the current in response to an analog video signal during a sustaining period; and turning switch off thereby to make the light-emitting element nonluminous or making first and the second electrodes identical in potential thereby to make the light-emitting element nonluminous during an off time period.

Abstract: An organic light emitting display device including a power generator for sending a plurality of voltages to a display unit. The display unit receives a scan signal, a light emitting control signal, and a data signal, which enable a current corresponding to the data signal to flow from a first power supply to a second power supply. The display unit includes a pixel circuit that includes a storage capacitor adapted to store the data signal and to stabilize the stored data signal utilizing a third power supply. A driver IC includes a signal generator for generating the data signal, the scan signal, and the light emitting control signal, and further includes a power generator for generating the first power, the second power, and the third power, wherein the second power and the third power are at a lower voltage than that of the first power.

Abstract: Pixel interleaving configurations for use in high definition electronic sign displays where each and every scan line includes full red, green, and blue color representation to provide for high resolution electronic video sign displays.

Abstract: A color LED display device without color separation comprises a substrate, a plurality of display units, a power supply unit, and a control unit. Each display unit comprises a driving chip, at least one red-light LED chip, at least one green-light LED chip, at least one blue-light LED chip, and a micro optical device assembly. The micro optical device assembly is disposed above the red-light, green-light and blue-light LED chips. When the control unit controls the display unit to emit light, the red-light, green-light and blue-light LED chips emit red, green and blue lights respectively and simultaneously. The red, green and blue lights pass through the micro optical device assembly, such that the light paths of the red, green and blue lights are changed and the three lights are combined on a two-dimensional plane. Therefore, the color separation phenomenon of the conventional color LED display device is solved.

Abstract: A high-resolution, Active Matrix (AM) programmed monolithic Light Emitting Diode (LED) micro-array is fabricated using flip-chip technology. The fabrication process includes fabrications of an LED micro-array and an AM panel, and combining the resulting LED micro-array and AM panel using the flip-chip technology. The LED micro-array is grown and fabricated on a sapphire substrate and the AM panel can be fabricated using PMOS process, NMOS process, or CMOS process. LED pixels in a same row share a common N-bus line that is connected to the ground of AM panel while p-electrodes of the LED pixels are electrically separated such that each p-electrode is independently connected to an output of drive circuits mounted on the AM panel. The LED micro-array is flip-chip bonded to the AM panel so that the AM panel controls the LED pixels individually and the LED pixels exhibit excellent emission uniformity.

Abstract: Representative embodiments of the disclosure provide a system, apparatus, and method of controlling an intensity and spectrum of light emitted from a solid state lighting system. The solid state lighting system has a first emitted spectrum at full intensity and at a selected temperature, with a first electrical biasing for the solid state lighting system producing a first wavelength shift, and a second electrical biasing for the solid state lighting system producing a second, opposing wavelength shift. Representative embodiments provide for receiving information designating a selected intensity level or a selected temperature and providing a combined first electrical biasing and second electrical biasing to the solid state lighting system to generate emitted light having the selected intensity level and having a second emitted spectrum within a predetermined variance of the first emitted spectrum over a predetermined range of temperatures.

Abstract: A light emitting apparatus comprises a light emitting section for emitting light, a color of the light being changed with a value of a driving current, and a driving section for driving the light emitting section so that the light emitting section emits light having a desired color and a desired intensity, by generating the driving current based on a signal designating the desired color and a signal designating the desired intensity and by applying the driving current to the light emitting section.

Abstract: Large digital displays for entertainment, architectural and advertising displays have interconnected display panels with pluralities of light emitting elements. To solve calibration problems, each of the display panels stores measured luminance and chromaticity data for each of the light emitting elements of the panel. The luminance data is independent of the chromaticity data. A central controller can then perform calibration procedures so that the light emitting elements are matched across the entire display.

Abstract: To drive light-emitting blocks, currents are sensed through the light-emitting blocks arranged in an M×N matrix (wherein M and N are natural numbers), wherein M rows are connected to a row switching part and N columns are connected to a column switching part. The light-emitting blocks are driven by a local dimming method with feedback control responsive to the sensed currents.

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 pixel circuit (Aij) has a capacitor (Cs) having one of ends connected with a gate terminal of a DTFT (driving TFT) and the other end connected with a capacitance feedback line (CSi), a current-voltage conversion circuit (14) having an input terminal to which a feedback current flowing to a DDTFT (dummy driving circuit) is input when a predetermined potential is supplied to a gate terminal of the DDTFT having TFT characteristics substantially same as those of the DTFT in the pixel circuit (Aij) during a selected period for converting the feedback current into voltage and outputting a potential according to the voltage from an output terminal, and a changeover switch (CSW) for connecting the capacitance feedback line (CSi) corresponding to the pixel circuit (Aij) with the current-voltage conversion circuit (14) during the selected period and connecting the capacitance feedback line (CSi) corresponding to the pixel circuit (Aij) during a non-selected period with a constant potential supply line for supplying a

Abstract: A method for adjusting the intensity values of colored pixels wherein each pixel has a first subpixel, a second subpixel, and a third subpixel, wherein each of the subpixels emits light of a different color and the lifetime of the first subpixel is lower than the lifetimes of the other colored subpixels, comprising: for each pixel, receiving intensity values corresponding to the intensity of each color subpixel in each pixel; and lowering the intensity value of the first subpixel in each pixel and still providing an acceptable pixel color to an observer.

Abstract: Herein disclosed is an image display device including a pixel circuit array portion, a scanner portion, and a signal portion.

Abstract: An organic electroluminescent display device is capable of flowing a constant electric current into each pixel and improving image qualities even if the device displays an image on a large screen. The organic electroluminescent display device including a lower electrode, an organic electroluminescent film, and an upper electrode on a substrate arranged in this order, wherein the upper electrode is divided in units of a pixel or dot by a partition having an insulating property.

Abstract: Disclosed herein is a display apparatus, including: a pixel array section including a plurality of pixels, a writing transistor, a driving transistor, a first switching transistor, a holding capacitor, and a second switching transistor; a first scanning section configured to drive the writing transistor in a unit of a row of the pixels; a second scanning section configured to drive the switching transistors in synchronism with scanning by the first scanning section; and a third scanning section configured to control the second switching transistors to a non-conducting state within a period after the image signal is written by the writing transistor until the signal writing period of the same row of the pixels ends but to a conducting state within any other period.