Abstract: A display panel of a light emitting display device includes a plurality of pixel circuits disposed in a matrix format. At least one of the pixel circuits includes a light emitting element, a transistor, a capacitor, a first switch, and a second switch. The transistor has first, second, and third electrodes and is for outputting a current corresponding to a voltage applied between the first and second electrodes to the third electrode. The light emitting element is for emitting light corresponding to the current outputted by the transistor. The capacitor is coupled between the first and second electrodes of the transistor. The first switch is for transmitting image signals to the first electrode of the transistor in response to a select signal, and the second switch is for electrically coupling the light emitting element to the third electrode of the transistor in response to an emit signal.

Abstract: A display device capable of applying reverse driving voltage for a light emitting element to a light emitting element every certain period for prolonging light emitting element's life and burning out a shorted portion. Besides a path for supplying forward current to the light emitting element, a path for supplying reverse current is provided. A driving transistor is provided in the former path while a transistor (AC transistor) is provided in the latter path, thereby a switching between the two paths is controlled. The AC transistor has a rate L/W of a channel length L to a channel width W smaller than that of the driving transistor. Accordingly, current flowing into the light emitting element can flow into the AC transistor in the case of reverse driving voltage being applied to the light emitting element.

Abstract: Fluorescent screens and display systems and devices based on such screens using at least one excitation optical beam to excite one or more fluorescent materials on a screen which emit light to form images. The fluorescent materials may include phosphor materials and non-phosphor materials such as quantum dots. A screen may include a multi-layer dichroic layer.

Abstract: Disclosed is a PDP driving method which may include generating subfield information that shows ON/OFF states of discharge cells from among a plurality of subfields from input image signals, generating address information that shows ON/OFF states of the discharge cells per subfield from the subfield data, counting the number of the discharge cells that are ON from among the discharge cells from the address data, and controlling a waveform applied during a reset period of a subsequent subfield.

Abstract: Systems and/or methods for displaying content on an LED display device comprising a plurality of LED modules are provided. A plurality of frames to be sequentially displayed on the LED display device across the plurality of LED modules may be defined based at least in part on the content to be displayed. A fieldcount corresponding to a number of scans appropriate for each said frame may be defined. For each said frame, the fieldcount for the frame may be initialized. The frame may be divided into a plurality of sequentially ordered rows and columns. For each said row, in sequence, a signal may be outputted to the LED display device in dependence on the frame, the fieldcount, the row, and the column. The fieldcount may be increased and the dividing step may be repeated until all scans of the frame have been completed. The content may be displayable substantially continuously and substantially free from flickers.

Abstract: A color signal correction apparatus, for suppressing variation of a chromaticity point of achromatic color in a display apparatus, equipped with independent luminescent characteristic correction units respectively for each color for correcting a luminescent characteristic of luminance of respective RGB colors, an offset value for use in chromaticity correction, for suppressing variation of a chromaticity point of a simple color and a white color, which is defined in accordance with a luminance level is selected or generated based on one or two color data selected from respective RGB colors inputted into the correction unit, and the value is added to one color data selected from remaining one or two colors, and inputted into that color's correction unit, and thereby, it becomes possible to produce a color signal for suppressing variation of the chromaticity point, and to suppress variation of a chromaticity point of a simple color and an achromatic color.

Abstract: A Light-Emitting Diode (LED) driver circuit is disclosed that controls the brightness of light generated by a LED that is coupled between a first terminal and a second terminal in response to a user supplied brightness control signal. A constant current source generates a constant current that is supplied to the LED and to a shunt circuit, which his connected in parallel with the LED. A brightness control circuit generates a pulse signal having a duty cycle that is proportional to the brightness control signal, and controls the shunt circuit such that, when said pulse signal is high, the constant current is passed through the shunt circuit and the LED is turned off, and when the pulse signal is low, the constant current is passed through the LED. The duty cycle of the brightness control signal is adjusted to adjust the LED's brightness, while the LED color remains constant.

Abstract: A method and a circuit for driving light emitting diodes (LEDs) in multiphase are provided. A string of LEDs divided into groups connected to each other in series is provided. Each group is coupled to ground through separate conductive paths. A phase switch is provided in each conductive path. Increasing the input voltage turn on the string of LEDs, group by group in the sequence downstream the string. To reduce power dissipation, the phase switch of an upstream group is turned off when next downstream group is turned on.

Abstract: Backlight support is provided for flat panel displays through use of phospho-luminescent materials. Photo-luminescent materials are integrated into a flat panel display such as an LCD display as a back panel substrate or by embedding in display pixels. When ambient light levels exceed a predetermined threshold the material is activated allowing a reduction in active backlight power. The active backlight may be provided by an electrically supported system such as an ELP, a light pipe, an LED, etc. By reducing the power of the active backlight in an analog manner or through decreasing the duty cycle, an overall power savings is accomplished for the display. By embedding different photo-luminescent materials that operate at different wavelengths, color display may be enhanced while reducing power consumption. Display properties, such as transparency, contrast, etc., may be adjusted to affect phospho-luminescent backlight support.

Abstract: A digital color controller for illumination of dashboards and instrument panels is provided. In one embodiment, a digital color controller comprises a single control mechanism for varying the color of illumination of RGB LEDs. A microcontroller maps the signal derived from the control mechanism to an array of discrete color values. A selected discrete color value is passed to an LED driver to drive the LEDs to display the selected color.

Abstract: A method for driving the output of a illuminating display is provided. The method includes providing a display panel having a plurality of pixels, wherein each pixel includes at least one diode color. A display controller is also provided that is configured to process video data numbers for display. The method further includes loading a bit of a video data number into a diode driver, sending an output enabling state to the diode driver such that a diode will turn on if the bit of the video data number in the diode driver is enabled while an output enabling signal is activated, maintaining the output enabling signal for a period of time, wherein the period of time is based on a bit position of the bit of the video data number loaded in the diode driver, and repeating the loading, sending, and maintaining steps until all bits of the video data number have been loaded.

Abstract: A backlight assembly includes a plurality of line light source sections and a light source driving section. The line light source sections include a plurality of point light sources disposed along a first direction, and are disposed along a second direction substantially perpendicular to the first direction. The light source driving section controls each of the line light source sections to individually drive the point light sources. The light source driving section controls the line light source sections so that at least one of the line light source sections is sequentially driven along the second direction. Thus, the point light sources are individually activated within a required area, and are sequentially activated by at least every one line along the second direction, so that power consumption for driving the backlight assembly may be decreased.

Abstract: The invention relates to a color display device for display a color image and a method of operating such display. The color display device is provided with a plurality of picture elements, two selectable light sources having different predetermined radiance spectra, color selection means which in combination with the selectable light sources is able to produce respective first and second primary colors on the display panel and control means arranged to select alternately one of the selectable light sources and to provide a portion of the picture elements with image information corresponding to the respective primary colors obtainable with the selected light source. The primary colors of the display device can be selected in a time sequential and space sequential way which enable a reduction of a color break-up.

Abstract: A full color flat panel display module is formed of a matrix of pixels in rows and columns. Each pixel is formed of respective red, green and blue solid state light emitting diodes that can form any color on that portion of a CIE curve that falls within a triangle whose sides are formed by a line on the CIE curve between 430 nm and 660 nm, a line between 660 nm and a point between 500 and 530 nm, and a line between the 500-530 nm point and 430 nm.

Abstract: Disclosed herein is a display device including: a red pixel configured to be provided with a red light-emitting element that generates red light; a green pixel configured to be provided with a green light-emitting element that generates green light; and two blue pixels configured to be provided with blue light-emitting elements that generate blue light and have the same structure, wherein a color filter is provided on a light-extraction side of at least one of the two blue pixels so that blue light beams having different y-values in an xy chromaticity coordinate system are extracted from the two blue pixels.

Abstract: Driving voltages of an LED of each color are stored in applied voltage storage register 11, 12 or 13, and the LED of each color is driven with independent driving voltage, whereby current consumption is reduced. Further, data in applied voltage storage registers 11, 12 and 13 is made rewritable via storage value setting bus 14, and when there are fluctuations in minimum emission voltage in actually mounted LEDs due to individual differences, voltages to store in the applied voltage storage registers 11, 12 and 13 can be changed as appropriate corresponding to the fluctuations.

Abstract: A color display device including: at least one spatial light modulation element forming a display picture by modulated light obtained by modulating illumination light, a color sequential light generation device changing in a time series the illumination light or the modulated light into multiple groups of different color lights in one frame of a display period of the display picture, a control device controlling the spatial light modulator, and a color sequential light generation device based on the input picture data. The control device controls the spatial light modulator and the color sequential light generation device to change the ratio of the display time of each color of the reflected light time-shared in the display period of the frame depending on the character and/or the set value of the input picture data.

Abstract: To shorten the measuring time of the characteristics of light emission of OLED elements for feedback to image data for image display in an organic EL display device. Pixels that emit red lights, pixels that emit green lights, and pixels that emit blue lights are arranged on a screen in a matrix manner. A detection system is provided on the upper side of the screen. A detection line extending from the detection system is coupled to the respective pixels through analog switches and digital switches controlled by switch controlling lines. A detection scanning circuit is provided on the right side of the screen. Detection switch controlling lines extend from the detection scanning circuit. By appropriately selecting the analog switches, the switch controlling lines, and the detection switch controlling lines, the voltage-current characteristics of plural pixels are measured at the same time.

Abstract: An electrostatic discharge device and an organic electro-luminescence display device having the same are provided. The organic electro-luminescence display device includes an electrostatic discharge device including a metal pattern having an island shape on a substrate, an insulating layer on the metal pattern, a semiconductor pattern on the insulating layer, the semiconductor pattern corresponding to the metal pattern, a first electrode overlapping one end of the semiconductor pattern, and a second electrode overlapping the other end of the semiconductor pattern, and spaced from the first electrode, thereby preventing a current leakage, a signal distortion and a signal cross-talk to improve the reliability.

Abstract: A multicolor light emitting optical device is a programmable, multifunctional, general-purpose, solid-state light source. The device can use any of several light sources, including LEDs. The device couples a light source and a tunable optical converter composed of a quantum confinement device to produce a tunable, monochromatic light emission. The output wavelength of the optical device can be selected from within a tunable range of the optical (visible, near infrared, or near ultraviolet) spectrum on demand, in real time. The optical device is capable of serving as a tunable light source, a “true color” pixel, and a replacement for bi-color, tri-color, and multi-color light-emitting diodes. The optical device has particular, but not exclusive, application as an indicator light, in room lighting, and as a picture element in video displays.

Abstract: A color management system for a field sequential lighting system. The color management system includes a plurality of light sources, a driver circuit, and a controller. The driver circuit is coupled to the plurality of light sources, and the controller is coupled to the driver circuit. The driver circuit drives the plurality of light sources. The controller generates first and second control signals for a first subframe of a temporal sequence of subframes. The first control signal corresponds to a first light source of a first color which is a primary color for the first subframe. The second control signal corresponds to a second light source of a second color which is a supplemental color for the first subframe. Embodiments of the color management system maintain a color point of the primary color of each subframe.

Abstract: An OELD, including a pixel unit having a plurality of pixels to emit light, a photosensor configured to generate a control signal corresponding to an amount of ambient light, a control unit having a gamma control unit, a color coordinate control unit and a light emission control unit, the gamma control unit may be configured to set a gamma correction signal corresponding to the control signal, and the color coordinate control unit may be configured to correct a color coordinate of data signals corresponding to the control signal, a scan driver configured to generate scan signals to scan lines, a data driver configured to correct a gamma value of the data signals according to the data signals corrected in the color coordinate control unit and the gamma correction signal output from the gamma control unit, the data driver may be configured to supply the corrected gamma value to the data lines, and a power supply unit configured to supply power to the pixel unit.

Abstract: 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 emission state, and also the bias of the polarity reverse to that in the light emission is applied to the OLED.

Abstract: A color Liquid Crystal display (LCD) device for displaying a color image using at least four different primary colors, the device including an array of Liquid Crystal (LC) elements, driving circuitry adapted to receive an input corresponding to the color image and to selectively activate the LC elements of the LC array to produce an attenuation pattern corresponding to a gray-level representation of the color image, and an array of color sub-pixel filter elements juxtaposed and in registry with the array of LC elements such that each color sub-pixel filter element is in registry with one of the LC elements, wherein the array of color sub-pixel filter elements comprises at least four types of color sub-pixel filter elements, which transmit light of the at least four primary colors, respectively.

Abstract: A projection system is provided with a controller equipped to drive light emitting devices of a light source of the projection system in a manner that enhances the operational life of the light emitting devices, the ability to provide peak white, and/or finer gray scale.

Abstract: An instantly controllable LED light apparatus provides an LED array (34) formed of red, green and blue LEDs in a regular arrangement. The apparatus also provides a unitary power supply/controller (4) disposed within a unitary housing (20) that is coupled only to the LED array (34) and a power source (56) in one embodiment. The power supply/controller (4) includes a memory device (64) such that, when a button (62) is pressed on the control panel (18) of the power supply/controller (4), a desired illumination color is instantly produced by the combination of the red, green and blue LEDs of the LED array (34).

Abstract: An OLED display system includes a) an OLED display including an array of light emitting pixels, each pixel having a plurality of OLEDs for emitting different colors of light specifying a gamut wherein one of the OLEDs has a power efficiency or lifetime different from the power efficiency or lifetime of at least one of the other OLEDs; b) a control signal; and c) a display driver for receiving a color display signal representing a relative luminance and color to be produced for each pixel of the display and generating a converted color display signal for driving the OLEDs in the display, wherein the display driver is responsive to the control signal for controlling the color gamut saturation of light produced by the OLEDs to reduce power consumption or increase lifetime of at least one of the OLEDs.

Abstract: A method of displaying an input signal (IV) on a full color LED display is discussed wherein the display has pixels (11) comprising at least four LED's (PLi) which respectively emit light with four primary colors. The method comprises converting (SC) the input signal (IV) into drive signals for the at least four LED's (PLi). The converting (SC) comprises: (i) determining (RD) valid ranges (VRi) of at least two of the drive signals (DSi) to obtain a color of the combined light emitted which fits the input signal (IV), (ii) determining (LD) a gradation or lifetime indication (LTi) of the at least two LED's (PLi) for associated ones of the drive signals (DSi) within the valid ranges (VRi), and (iii) determining (CD) a combination (DCi) of values of drive signals (DSi) providing substantially the minimum degradation, or the maximum lifetime, of a combination of the at least two LED's (PLi) based on the degradation or lifetime indications (LTi).

Abstract: A color conversion apparatus includes an extraction unit, a summer, a scale vector generation unit, and a multiplier. The extraction unit extracts first white component data and first primary color component data of gray scale, second white component data and second primary color component data of brightness scale in response to gray scale data supplied from the outside. The summer sums the second primary color component data for one frame to calculate a primary color sum, and sums the second white component data for the one frame to calculate a white sum. The scale vector generation unit generates a primary color scale vector and a white scale vector in response to the primary color sum and the white sum. The multiplier multiplies the first primary color component data by the primary color scale vector to output primary color gray scale data scaled thereby, and multiplies the first white component data by the white scale vector to output white gray scale data scaled thereby.

Abstract: The specification and drawings present a new method, apparatus and software product for increasing a grey dynamic range of a display for displaying video data by providing a grey level, calculated for a reduced number of primary colors using a predetermined criterion, for each field of a frame set by the display by varying an amplitude or a subfield composition of a display driving signal and by varying a fluence of simultaneously lit backlight sources (e.g., LEDs) corresponding to selected two or more primary colors of the display.

Abstract: A full color flat panel display module is formed of a matrix of pixels in rows and columns. Each pixel is formed of respective red, green and blue solid state light emitting diodes that can form any color on that portion of a CIE curve that falls within a triangle whose sides are formed by a line on the CIE curve between 430 nm and 660 nm, a line between 660 nm and a point between 500 and 530 nm, and a line between the 500-530 nm point and 430 nm.

Abstract: A display capable of displaying multi-color space and including a display unit, a control circuit, and a light source is provided. The control circuit is electrically connected to the display unit and the light source respectively. In addition, the light source is controlled by the control circuit to switch between different illumination modes, such that the display is capable of displaying multi-color space with different specifications, for example, sRGB, NTSC, SMPTE, PAL, etc.

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: An organic electroluminescent display device and the driving method thereof that can improve the aperture ratio. The organic electroluminescent display device according to the present invention includes first to third organic electroluminescent elements, first to third driving transistors to apply a driving current to the first to third organic electroluminescent elements, respectively, and first and second switches and a third switch group. A first light emission control line transfers a first light emission control signal, and a second light emission control line transfers a second light emission control signal. The first switch is turned on/off in response to the first light emission control signal, and the second switch and the third switch group are turned on/off in response to the first and second light emission control signals.

Abstract: An LED driver and a display device using the same are disclosed. The LED driver is adapted for driving a first set of LEDs and a second set of LEDs. The LED driver includes an inductor, a main switch, a first switch, a second switch, and a controller. The inductor has a first terminal receiving an input voltage. The main switch is coupled between a second terminal of the inductor and a common level for adjusting a current flowing therethrough. The first switch is coupled between the first set of LEDs and the second terminal of the inductor. The second switch is coupled between the second LEDs and the second terminal of the inductor. The controller is coupled to controlling terminals of the main switch, the first switch, and the second switch respectively for controlling conducting statuses of the main switch, the first switch, and the second switch respectively.

Abstract: A display apparatus comprising a display unit and a plurality of light emitting diodes (LEDs) provided in a backlight that illuminates the display unit, the display apparatus includes: a power supplier; a current detector which detects a value of a current flowing in each of the LEDs; a current adjusting unit which compares a target current value which is supplied to the LED with a current value detected by the current detector and controls the value of the current flowing in the LED; and a controller which determines the target current value based on grayscale information of a video signal which is displayed on the display unit, provides the target current value to the current adjusting unit, and provides a virtual target current value that is higher than the target current value to the current adjusting unit for a predetermined time period if the target current value is determined.

Abstract: A calibration method for calibrating a fixed format emissive display device having a plurality of pixels is described In the display each pixel comprises at least three sub-pixels for emitting light of different real primary colours. The method comprises determining, for each real primary colour separately, a virtual target primary colour which can be reached by at least 80% of the pixels of the display, determining a colour gamut defined by the determined virtual target primary colours, and adjusting the drive currents to the sub-pixels to achieve a colour inside the determined colour gamut. A display having an extended range of colours is described, i.e. a gamut of colours that is more than the gamut provided by an n virtual primary colour based electronic multicolour display, as measured on a chromaticity diagram, for example. A color and/or brightness uniform image can be produced with this fixed format emissive display device.

Abstract: Image display apparatus comprising two or more arrays of light sources is described. Each array is rotatable around a common axis, and the light sources in each array are arranged so that each light source traverses along a unique path around the common axis. A controller is adapted to modulate the intensity of light emitted by each light source as it traverses its respective unique path such that the light sources in combination cause a desired image to be visible to an observer by virtue of persistence of vision.

Abstract: A pixel circuit includes a driver element that is supplied with a potential from a data line. The driver element controls a value of current passing through an electric light emitting element. Upon obtaining a threshold voltage, a conductive member connected to the electric light emitting element is made to be a floating state to cause the driver element to become on-state, variations in the potential of the conductive member caused by charges passing through the driver element to flow into the conductive member are detected by a threshold voltage detector to obtain the threshold voltage of the driver element.

Abstract: The systems and methods disclosed herein relate to sources of diffuse illumination for providing substantially uniform illumination to a surface. The diffuse illumination arises from varying the diffusion angle of light generated by an LED system. To vary the diffusion angle, a translucent member is placed between the LED system and the surface. Light emitted from the LED system across the translucent member can subsequently can uniformly cover the surface.

Abstract: A computer-readable medium of one embodiment of the invention is disclosed that has a data structure stored thereon to represent extended color gamut information for a pixel. The data structure has a number of data fields, where each data field is to store a number of bits representing a different color component of the pixel. The data structure also has at least one interpretation bit for each data field to indicate how the bits of the data field are to be interpreted in representing the different color component of the pixel.

Abstract: A technique for controlling a Light Emitting Diode (LED) based light system involves driving individual light sources that make up the LED-based light system at non-overlapping intervals so that light source-specific feedback signals can be generated in response to the emitted light. The light source-specific feedback signals are then used to individually adjust the light sources to achieve desired luminance and chrominance characteristics of the emitted light.

Abstract: A display that includes energy sensors within the display itself is disclosed. An Organic Light Emitting Diode (OLED) can be made to operate both as a light emitter and as an energy detector. When forward biased with an appropriate driving signal, the OLED emits light via electroluminescence, which can be used to make a portion of an image on the display. In another mode, the OLED can detect energy by converting incoming photons or energy into an electrical signal by the photoelectric effect. By operating OLEDs in the display in both emissive and sensing modes, energy that shines on the display, such as from an outside source can be detected at the same time an image is shown. Additionally, a display including OLEDs can detect light energy generated by the display itself.

Abstract: An OLED display device includes: an array of light emitting pixels, each pixel having red, green, and blue OLEDs and at least one additional colored OLED that expands the gamut of the display device relative to the gamut defined by the red, green and blue OLEDs, wherein the luminance efficiency or the luminance stability over time of the additional OLED is higher than the luminance efficiency or the luminance stability over time of at least one of the red, green, and blue OLEDs; and means for selectively driving the OLEDs with a drive signal to reduce overall power usage or extend the lifetime of the display while maintaining display color accuracy. In accordance with various embodiments, the present invention provides a color display device with improved power efficiency, longer overall lifetime, expanded color gamut with accurate hues, and improved spatial image quality.

Abstract: Circuitry for controlling a display matrix formed of light-emitting diodes arranged in rows and columns, diodes in each row being connected to common row lines, and diodes in each column being connected to common column lines, each of the column lines being selectively connected to a current source for providing a current to each of the column lines when the column line is selected, a column voltage being present at a column node of each column line while the column line is selected, each of the row lines being selectively connected to a rowoff voltage for turning off the diodes in that row, the circuitry including circuitry for generating the rowoff voltage including: capture circuitry arranged to capture a maximum value of the column voltages present at the column nodes of a plurality of selected column lines; storage circuitry arranged to store the maximum column voltage; and output circuitry arranged to provide the rowoff voltage based on the maximum column voltage.

Abstract: A decorative illumination device for use in a lighting system including a command controller, a plurality of illumination devices and a flexible cord interconnecting each. The command controller includes a microcontroller that provides a data signal and a clock signal. The data signal instructs a plurality of addresses corresponding to the lighting devices. Each illumination device has at least three light emitting diodes (LEDs). The LEDs each emit light at a different wavelength than either of the other LEDs. An integrated circuit LED is responsive to the data signal, clock signal, and power signal and drives the first, second, and third LEDs by to a blink rate and intensity. The LED driver includes a plurality of pulse width modulation registers that are selectable in combination to drive the LEDs to a blink rate and intensity independent of one another.

Abstract: In one embodiment, a user-selected color point is received. RGB tristimulus values are then derived for the color point. It is also determined whether the user-selected color point is outside a color selection range of the LED light source and, if so, an error flag is set. Pulse width modulated signals for a plurality of LED drivers for the LED light source are also generated. In another embodiment, tristimulus values representing a color of light produced by an LED light source are received. The received tristimulus values are then compared to tristimulus values corresponding to a user-identified color point. In response to the comparison, pulse width modulated signals are generated for a plurality of LED drivers for the LED light source. After a predetermined number of repetitions of these actions, an error flag is set if the user-selected color point has not been achieved by the LED light source.

Abstract: A pixel driving circuit for use in an active matrix electron luminescent display includes a transistor, a capacitor and an organic light-emitting diode. The capacitor has a first and a second ends coupled to the gate electrode of the transistor and a ground voltage, respectively. The organic light-emitting diode has a P and an N electrode coupled to the source electrode of the transistor and the ground voltage, respectively. The capacitor is charged by a driving current received from a data line to generate a specified voltage to bias the transistor and the organic light-emitting diode in the memorizing state, and the transistor and the organic light-emitting diode are further biased with the specified voltage in the emission state.

Abstract: An organic light-emitting diode display (OELD) device is presented that reduces the number of outputs of a data driver. The OELD device includes data and scan lines which cross each other. Pixel cells that contain organic electro-luminescence diodes are arranged in a matrix in pixel areas between the data lines and the scan lines. The pixel cells are arranged in different colors in a vertical direction and in the same color in a horizontal direction. A data driver supplies data to the data lines. A scan driver supplies a scan signal to the scan lines.

Abstract: A display device and a driving method using four color pixels, a signal processor that converts three input image signals having gray levels to four output image signals that display four colors based on a look-up table without separate gamma conversion; and a data driver that generates a data voltage based on the output image signal and that supplies the data voltage to the pixels, thereby simplifying signal processing.