Abstract: Methods, systems, and apparatus, including computer program products, for communicating information. An event is detected. A light effect is emitted in response to the detected event. The emitted light effect simulates the detected event or a sensory output associated with the detected event.

Abstract: A backlight display has improved display characteristics. An image may be displayed on the display where the image includes a liquid crystal material with a light valve. The display receives an image signal and uses the image signal to modify the light for a backlight array and a liquid crystal layer.

Abstract: A pixel circuit and an organic light-emitting diode (OLED) display using the pixel circuit is provided. The pixel circuit includes: an OLED; a third N-channel metal-oxide semiconductor (NMOS) transistor coupled to a data line and a first scan line and configured to apply a data signal to a first node; a storage capacitor having one terminal coupled to the first node and the other terminal coupled to a second node; a fourth NMOS transistor coupled between a first power and the second node and configured to apply a voltage of the first power to the second node; a first NMOS transistor having a first electrode, a second electrode, and a gate electrode coupled to the second node; and a second NMOS transistor coupled between the second node and the first electrode of the first NMOS transistor and configured to diode-connect the first NMOS transistor.

Abstract: Disclosed herein is a method for driving an image display apparatus including: an image display panel whereon pixels each having first to third sub-pixels are laid out in first and second directions to form a 2-dimensional matrix, at least each specific pixel and an adjacent pixel adjacent to the specific pixel in the first direction are used as first and second pixels respectively to create one of pixel groups, and a fourth sub-pixel is placed between the first and second pixels in each of the pixel groups; and a signal processing section configured to generate first to third sub-pixel output signals for the first pixel on the basis of respectively first to third sub-pixel input signals and to generate first to third sub-pixel output signals for the second pixel on the basis of respectively first to third sub-pixel input signals.

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 light emitting device display, its pixel circuit and its driving technique is provided. The pixel includes a light emitting device and a plurality of transistors. A bias current and programming voltage data are provided to the pixel circuit in accordance with a driving scheme so that the current through the driving transistor to the light emitting device is adjusted.

Abstract: A method for driving an active matrix organic light emitting diode (AMOLED) display panel is provided. In the present method, how to drive a single pixel having a red sub-pixel, a green sub-pixel, a first blue (light blue) sub-pixel, and a second blue (dark blue) sub-pixel is effectively determined based on the characteristics of the (1931) CIE color space. Besides, at the same time point, only one of the two sub-pixels corresponding to the two blues (i.e. dark blue and light blue) in the single pixel is enabled to be mixed with the red sub-pixel and the green sub-pixel. Accordingly, the luminous efficiency of the AMOLED is improved and the power consumption of the entire AMOLED display is reduced.

Abstract: In a pixel driving device that drives a plurality of pixels, each pixel includes a light emitting element and a pixel driving circuit comprising a driving device having one end of a current path connected to one end of the light emitting element and having another end of the current path to which a power-source voltage is applied. Provided in a controller is a correction-data obtaining function circuit which obtains a first characteristic parameter relating to a threshold voltage of the driving device of each pixel based on a voltage value of each data line after a first detection voltage is applied to each data line connected to each pixel, and a current is caused to flow through the current path of the driving device through the each data line with a voltage of another end of the light emitting element being set to be a first setting voltage.

Abstract: A display apparatus employs a pixel array section including pixel circuits forming a matrix, signal lines as columns, scan lines as rows and power-supply lines, and driving sections. The driving sections are a signal selector, a write scanner and a drive scanner. The signal selector provides an electric potential representing a gradation or a predetermined reference electric potential. The write scanner provides a control signal. The drive scanner provides a power-supply voltage changing the electric potential from high to low. The drive scanner drives adjacent power-supply lines as a group. The number of lines as a group is determined in advance. The drive scanner switches a power-supply voltage from high to low and vice versa, and applies the voltage to groups by shifting the phase from group to group. The voltage is supplied to a group at the same phase and switched the electric potential.

Abstract: Degradations in light emitting elements occur with the passage of time. The invention provides a method of driving a light-emitting device provided with a plurality of pixels, which includes a light-emitting means with a first and a second electrodes, a drive means for supplying the light-emitting means with a current in response to an analog video signal, and a setting means for setting a sustaining period and an off time period within a frame period. The method of driving a light-emitting device is characterized by including the steps of: supplying the light-emitting means with the current in response to the analog video signal during the sustaining period; and turning the drive means off thereby to make the light-emitting means nonluminous or making the first and the second electrodes identical in potential thereby to make the light-emitting means nonluminous during the off time period.

Abstract: Disclosed are a display device and a driving method thereof. The display device includes: a display panel including a plurality of pixels, a plurality of gate lines, and a plurality of data lines; a first gate driver and a second gate driver which each transmit a gate signal to the gate lines and are at edge regions of the display panel; and a data driver which transmit data voltages to the data lines. The pixels include a plurality of first color pixels which display a first color and are connected to the first gate driver, a plurality of second color pixels which display a second color and are connected to the second gate driver, and a plurality of third color pixels which display a third color and comprise at least a pixel connected to the first gate driver and at least a pixel connected to the second gate driver.

Abstract: An organic light emitting display includes a plurality of scan lines, a plurality of data lines crossing the scan lines, a plurality of sub pixels coupled to the scan lines and the data lines, and an auxiliary scan line coupling at least two of the scan lines coupled to respective ones of the sub pixels of a pixel.

Abstract: A driving circuit is disclosed that has low power consumption and supplies a current to a load. The driving circuit includes a constant current circuit section to generate and output a predetermined constant current, a current mirror circuit section to generate a current proportional to an input current supplied from the constant current circuit section and supply the current to the load, and a constant voltage supplying circuit section to generate a constant voltage and supply the constant voltage to a series circuit of the load and an output transistor of the current mirror circuit. The constant voltage supplying circuit section gene-rates the constant voltage so that an output voltage of the current mirror circuit section equals an input voltage of the current mirror circuit section.

Abstract: An organic light emitting display device including: red sub-pixels, each including a red organic light emitting diode and a driving transistor; green sub-pixels, each including a green organic light emitting diode and a driving transistor; and blue sub-pixels, each including a blue organic light emitting diode and a driving transistor, wherein the driving transistors of the red, green, and blue sub-pixels are configured to be initialized by a voltage applied to an anode electrode of the red, green, or blue organic light emitting diodes.

Abstract: A pixel includes a light emitting element and a driving element connected to the light emitting element. After an initial voltage is applied to one end of a current path of the driving element via the signal line, the pixel driving device acquires the threshold voltage of the driving element based on a voltage value at a terminal of the signal line when the initial voltage is cut off and the relaxation time is elapsed. The voltage-current characteristics of the driving element is acquired based on the voltage value at the terminal of the signal line when the current flows into the current path of the driving element via the signal line. The current gain value of the driving element is acquired based on the threshold voltage of the driving element. The image data is corrected based on the acquired threshold voltage.

Abstract: An edge-lit backlight unit for displays is provided. In one embodiment, the backlight may include a light guide configured to receive light from a light source along a first lateral edge. The received light propagates towards a second opposite lateral edge. The backlight unit may include an arrangement of light-extracting elements configured to extract a portion of the propagating light and to allow the remaining portion to reach the second edge. In one embodiment, a specular reflector disposed at the second edge causes the light reaching the second edge to retro-propagate back towards the first edge. In certain embodiments, the retro-propagating light may be between approximately 5 to 35 percent of the total light received by the light guide. The retro-propagating light may be extracted by multiple light-extracting elements and mixed with the extracted propagating light to provide improved color uniformity along an axis of the display.

Abstract: Systems, methods, and devices are provided for maintaining a target white point on a light emitting diode (LED) based backlight. In one embodiment, the backlight may include two or more groups of LEDs, each driven at a respective driving strength. Each group may include LEDs of a different chromaticity, and the respective driving strengths may be adjusted, for example, by varying the duty cycles, to maintain the target white point. To ensure that the white point may be maintained over an operational temperature range of the backlight, the LEDs may be selected so that the chromaticities of each group of LEDs are separated by at least a minimum chromaticity difference. Further, the LEDs may be selected so that at the equilibrium temperature of the backlight, the LEDs may produce the target white point when driven at substantially equal driving strengths.

Abstract: An active-matrix display device employs current-programmed-type pixel circuits and performs the writing data to each of pixels on a line-by-line basis. The active-matrix display device having a matrix of current-programmed-type pixel circuits includes a data line driving circuit 15 formed of m current driving circuits (CD) 15-1 to 15-m arranged corresponding to respective data lines 13-1 to 13-m. The data line driving circuit (CD) 15-1 to 15-m holds image data (luminance data herein) in the form of voltage, and then converts the voltage of the image data into a current signal. The current signal is then fed to the data lines 13-1 to 13-m at a time. The image information is thus written on the pixel circuits 11.

Abstract: A boosting circuit unit supplies a boosting voltage to one terminal of a backlight. A boosting comparator compares a voltage applied to the other terminal of the backlight with a predetermined reference voltage value, and outputs a comparison result as a feedback signal reflecting the boosting voltage to the boosting circuit unit. An LED driver unit is connected to the other terminal of the backlight and supplies drive current to the backlight. An acquisition unit acquires a PWM signal, which is generated based on the content of a video signal and can be used to change the luminance of the backlight. An LPF unit outputs a time-averaged signal of the acquired PWM signal as a control signal to be supplied to the LED driver unit.

Abstract: A control circuit may include a first feedback input terminal which receives the cathode terminal voltage of light-emitting elements from a current driving circuit as a feedback signal. Such an arrangement controls the ON/OFF state of a switching element such that the cathode terminal voltage approaches a predetermined voltage. A second feedback input terminal may be included to receive the anode terminal voltage of the light-emitting elements as a feedback signal. Such an arrangement controls the ON/OFF state of the switching element such that the anode terminal voltage does not exceed a predetermined threshold voltage. A feedback output terminal may be included of the current driving circuit which allows the cathode terminal voltage of the light-emitting elements to be input to a control circuit for the switching regulator as a feedback signal. The control circuit and the current driving circuit may be integrally provided in the form of separate semiconductor chips.

Abstract: The present invention relates to a display device using LED blocks, which includes at least one LED block having an LED installed. The LED block adjusts the color of light displayed according to the contact by the user. According to the present invention, the display device using LED blocks includes: at least one LED block including a plurality of installed color LEDs and a contact sensing unit for sensing contact by the user; and a controller for adjusting the color of light displayed by the LED block on the basis of the color data corresponding to the contact data which is generated by the contact sensing unit in accordance with contact by the user.

Abstract: The present invention relates to a light emitting display, and display panel and driving method thereof. The display panel includes a plurality of data lines for transmitting a data signal, a plurality of scan lines for transmitting a selection signal, and a plurality of pixels coupled to the data lines and the scan lines. The pixel includes at least two emitters for emitting different colors from each other in response to an applied current, and a driver for receiving the data signal while the selection signal is applied and outputting a first current corresponding to the data signal. The driver outputs the first current to at least the first and second emitters for emitting substantially the same color among the emitters formed in the pixels.

Abstract: Prior to increasing the voltage level of an input signal to be sampled in a step-by-step manner and writing a signal voltage Vsig at a desired voltage level, a precharge is performed which writes a precharge voltage Vpre, lower than the signal voltage Vsig, so as to apply the same voltage Vpre to the gate of a drive transistor in advance. This not only provides a reduced gate-to-source voltage of the drive transistor at the time of writing of the signal voltage Vsig but also extends a mobility correction time required for a mobility correction operation. The extension of the mobility correction time required for the mobility correction operation ensures a relatively smaller variation in the correction time, thus suppressing the variation in brightness. The extension also permits a write pulse to be set to the optimal pulse width.

Abstract: A dual display module having a first display panel and a second display panel, the dual display module including a bezel arranged between the first display panel and the second display panel, and having a penetration area between the first display panel and the second display panel; and a supporting member arranged between the bezel and the second display panel and supporting the second display panel, the supporting member having at least one protrusion unit that protrudes through the penetration area to face the first display panel.

Abstract: An organic light emitting device includes a substrate having a plurality of pixels, each pixel comprising a plurality of sub-pixels. Each sub-pixel includes an emission area that has a first electrode, a second electrode and an emitting layer, with the emitting layer of at least one sub-pixel includes a phosphorescence material. In addition to these features, the device includes a scan line to provide scan signal to a corresponding sub-pixel, a data line configured to supply data signal to a corresponding sub-pixel, and a power supply line to provide power to a corresponding sub-pixel. The data line and power supply line have a single-layer structure, and a taper angle of each of the data line and the power supply line lies in a predetermined range.

Abstract: An organic light emitting diode (OLED) display includes an illuminance sensing unit configured to sense an external illuminance, a brightness determination unit configured to determine a brightness of the OLED display according to an illuminance sensed by the illuminance sensing unit, a driving voltage determination unit configured to determine a driving voltage corresponding with a current saturation point of the OLED display, the driving voltage being determined based at least in part on a driving current and the brightness determined by the brightness determination unit, a voltage conversion unit configured to receive an input voltage, generate a first voltage higher than the input voltage, and generate a second voltage lower than the input voltage, and a display unit configured to receive the first and second voltages from the voltage conversion unit and display an image.

Abstract: A pixel array section includes a plurality of pixel circuits disposed in a matrix and each including a driving transistor, a storage capacitor, an electro-optical element, and a sampling transistor. Each pixel circuit includes a pixel divided into a plurality of divisional pixels for each of which an electro-optical element is provided, and a test transistor provided between the driving transistor and the electro-optical elements for carrying out on/off operations for specifying whether or not the electro-optical element is a dark spot element so that the electro-optical element of the dark spot can be specified. The number of the test transistors is smaller than the number of the divisional elements of the original one pixel.

Abstract: Methods and displays are disclosed for presenting media content on display systems. A display is configured as an array of LEDs. The array of LEDs includes a first set of rows including first LEDs in a repeating pattern of a first color LED, a second color LED, and a third color LED. A second set of rows includes second LEDs in a repeating pattern of the first color LED, the second color LED, and the third color LED, wherein the second set of rows are interleaved between the first set of rows and the second LEDs are offset relative to the first LEDs. Visual content to be presented on the display includes a repeating sequence of four frames of an array of virtual pixels such that each virtual pixel of the array comprises at least one of the first LEDs and at least one of the second LEDs.

Abstract: A display apparatus includes a matrix of light emitting elements, a plurality of drive circuits provided for driving the light emitting elements, a plurality of scanning lines to which a scanning signal is applied to select the drive circuits on a row basis, a plurality of control lines to which a light-emission control signal is applied to determine an emission period of the light emitting elements, and a plurality of data lines to which image signals are applied to define brightness of the light emitting elements on a column basis. The scanning signal is sequentially applied to the scanning lines in a field so that the image signals of the data lines are programmed in the drive circuits, and the light-emission control signal is sequentially applied to the control lines to make the light emitting elements emit light with brightness corresponding to the image signal programmed to the drive circuit.

Abstract: A display device, including a substrate; an array of pixels arranged in rows and columns forming a light-emitting area over the substrate, each pixel including a first electrode, one or more layers of light-emitting material located over the first electrode, and a second electrode located over the one or more layers of light-emitting material; a first serial buss having a plurality of electrical conductors, each electrical conductor connecting one chiplet in a first set of chiplets to only one other chiplet in the first set in a serial connection, the chiplets being distributed over the substrate in the light-emitting area, each chiplet including one or more store-and-forward circuits for storing and transferring data connected to its corresponding electrical conductor; and a driver circuit in each chiplet for driving at least one pixel in response to data stored in the store-and-forward circuit.

Abstract: An organic light emitting diode (“OLED”) display includes a substrate; a gate line formed on the substrate; a secondary gate line substantially parallel to the gate line; a plurality of control electrodes each connected to one of the gate line and the secondary gate line; a data line intersecting the gate line and the secondary gate line; a switching thin film transistor (“TFT”) connected to the gate line and the data line; a driving TFT connected to the switching TFT; a first electrode connected to the driving TFT; a second electrode facing the first electrode; and a light emitting member formed between the first electrode and the second electrode.

Abstract: A device and a method for displaying an image, a device and a method for supplying power, and a method for adjusting brightness of contents are provided. The device for displaying the image includes: a pixel value converter which, if a plurality of color pixel values of the image is received, converts the received color pixel values; a display panel which includes a plurality of color light-emitting devices and which drives each of the plurality of color light-emitting devices based on the converted color pixel values; a light-emission controller which provides the display panel with a control signal which variably controls respective driving times of each of the color light-emitting devices based on colors; and a global controller which controls the light-emission controller to variably adjust a duty ratio of the control signal based on colors and the converted color pixel values.

Abstract: A display device includes a display panel; and a backlight panel provided below the display panel and defining a plurality of regions. A first array of light emitting diodes (LEDs) is provided along a first direction, each LED of the first array being coupled to a first line. A driver is coupled to the first line to drive the LEDs coupled to the first line. A second array of LEDs is provided along a second direction, each LEDs of the second array being coupled to a second line. A lighting condition of the regions defined by the backlight panel is controlled by turning on or off the LEDs.

Abstract: A display panel has a pixel array arranged with a plurality of columns and a plurality of rows. The display panel includes a first pixel group and a second pixel group arranged in the first row and adjacent to each other. The first pixel group and the second pixel group respectively include a first color sub-pixel, a second color sub-pixel, a third color sub-pixel, and a transparent sub-pixel. The arrangement of the first color sub-pixel, the second color sub-pixel, the third color sub-pixel, and the transparent sub-pixel of the first pixel group and the arrangement of the first color sub-pixel, the second color sub-pixel, the third color sub-pixel, and the transparent sub-pixel of the second pixel group are symmetric in mirror.

Abstract: An organic electro-luminescent device package includes an organic electro-luminescent device array substrate, a transparent cover, and a frit. The organic electro-luminescent device array substrate includes a first substrate and a plurality of organic electro-luminescent devices arranged on the first substrate in an array. The transparent cover is disposed over the organic electro-luminescent device array substrate. The transparent cover includes a second substrate and a conductive layer disposed on the second substrate. The organic electro-luminescent devices are located between the first substrate and the second substrate. The frit is disposed between the organic electro-luminescent device array substrate and the transparent cover to surround the organic electro-luminescent devices. The frit is located between the first substrate and a portion of the conductive layer, and the portion of the conductive layer corresponding to the frit is transparent.

Abstract: Methods for displaying an image on a color display having a target display white point luminance and chromaticity, and including three gamut-defining emitters defining a display gamut and two or more additional emitters which emit light within the display gamut; the method including receiving a three-component input image signal; transforming the three-component input image signal to a five-or-more component drive signal; and providing the drive signal to display an image corresponding to the input image signal. One method provides a reproduced luminance value higher than the sum of the respective luminance values of the three components of the input signal when reproduced with the gamut-defining emitters. Another method provides reduced power in an OLED display including a white-emitting layer with three color filters for gamut-defining emitters and two or more additional color filters for three additional within-gamut emitters.

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: 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: A display device has an improved white balance in white display and excellent display quality, and includes a plurality of pixels each including four sub-pixels More specifically, the display device includes a plurality of pixels each including: a sub-pixel pair of a red (R) sub-pixel and a green (G) sub-pixel; and a sub-pixel pair of a blue (B) sub-pixel and a green (G) sub-pixel, wherein in most of the pixels, a product of an aperture area per sub-pixel and a light amount per unit aperture area, in each of the red (R) sub-pixel and the blue (B) sub-pixel, is approximately two times that of the green (G) sub-pixel.

Abstract: A pixel circuit having a function of compensating for characteristic variation of an electro-optical element and threshold voltage variation of a transistor is formed from a reduced number of component elements. The pixel circuit includes an electro-optical element, a holding capacitor, a sampling transistor, a drive transistor, a switching transistor, and first and second detection transistors. The sampling transistor samples and supplies an input signal from a signal line so as to be held into the holding capacitor. The driving transistor drives the electro-optical element with current in response to the held signal potential. The first and second detection transistors supply a threshold voltage of the drive transistor into the holding capacitor in order to cancel an influence of the threshold voltage in advance.

Abstract: A color imaging system includes a sensor assembly having a plurality of sensor pixels for sensing incident light. The sensor pixels generate photocurrents in response to sensing the incident light. An image processor receives the photocurrents and computes a plurality of photocurrent values. A display processor receives the photocurrent values and calculates a plurality of power values. A display driver receives the power values and generates a plurality of power signals. The color imaging system further includes a display device having a plurality of light emitting devices, each being powered by one of the power signals for emitting light. At least one of the light emitting devices is a deep-violet light emitting device for only emitting light having a peak emission wavelength in the range of 400 to 405.87 nm and having a full width at half maximum (FWHM) value of no greater than 1 nm.

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 method of controlling a luminance of a light source is presented. The method entails generating red, green, blue and white data using red, green and blue data, applying a color weight according to contribution to luminance by each of the red, green, blue and white data to generate pixel luminance data, setting a luminance level of the light source based on the pixel luminance data, determining local information on a pure color block in a frame image by using the pixel luminance data, and adjusting the luminance level of the light source based on the local information on the pure color block. A display device that utilizes such method is also presented.

Abstract: An organic light emitting display and a method for driving the same is disclosed. A pixel portion includes a plurality of pixels, which receive a plurality of scan signals, a plurality of emission control signals, and a plurality of data signals to display images. A data driver for generating and transferring the plurality of data signals to the pixel portion using video data. A scan driver transfers the plurality of scan signals and the plurality of emission control signals to the pixel portion. An optical sensor controls luminance of the pixel portion according to peripheral (or ambient) light. A current controller limits an electric current flowing through the pixel portion according to a sum of the video data input during a frame when the peripheral light sensed by the optical sensor has luminance equal to or greater than a predetermined value in order to control the luminance.

Abstract: A projection apparatus projecting images of respective color components sequentially includes a light source section having a plurality of light emitting elements (where n is a natural number greater than one), and a driving control section for driving each of the light emitting elements making up the light source section, by a pulse width modulation scheme with a phase difference based on ?/n (where ? is a lighting period unit), in synchronism with a projection period unit of the image of each color component.

Abstract: An integrated electromagnetic type input flat panel display apparatus is disclosed. The integrated electromagnetic type input flat panel display apparatus comprises a display panel, a control unit and a signal processing unit. The display panel has a display unit and an electromagnetic sensor unit, wherein the display unit and the electromagnetic sensor unit are integrated in to a substrate of the display panel. The signal processing unit receives and processes the signals from the electromagnetic sensor unit.

Abstract: A display device can include a housing, a processor, and a display assembly. The processor can be arranged within the housing. The display assembly can be operably coupled to the processor and arranged within the housing. The display assembly can include a first display, a privacy filter, and a second display. The first display can output a first portion of the display. The second display can output a second portion of the display. The privacy filter and the first and second displays can be arranged such that the first portion of the display assembly is filtered by the privacy filter to be viewable in a first viewable arc. The second portion of the display assembly can be viewable in a second viewable arc that is different than the first viewable arc. The first and second displays can be LCD's.

Abstract: A display method of a plasma display apparatus to which primary color video signals are inputted and which carries out color display by letting phosphors for primary colors emit light is provided. The display method displays the primary color video signals by changing a gray level of an output primary color video signal in accordance with a gray level of an input primary color video signal. When each gray level of the inputted primary color video signals changes from a first value to a second value which is larger than the first value, a gray level of a primary color video signal for a phosphor having the largest influence of luminance saturation properties among the phosphors is increased relative to a gray level of the other primary color video signal.

Abstract: An organic light emitting display device includes a scan driver for driving scan lines and light emitting control lines; a data driver for selecting any one gamma voltage of a plurality of gamma voltages corresponding to bit values of externally supplied data and generating data signals; a pixel coupled to a reference power, a first power, and a second power, and the pixel configured to compensate for a voltage drop of the first power using the reference power; and a gamma voltage controller for comparing a voltage value of the reference power with that of a comparative power having a target voltage value of the reference power to generate a comparison result and controlling voltage value of the gamma voltages in accordance with the comparison result.

Abstract: The present invention relates to an organic electroluminescent display (OELD) device, more particularly, to a dual panel type OELD device and a method of fabricating the same. The OLED structure has first and second barrier walls having a reverse-taper shape with respect to the first substrate and first and second side surfaces, wherein the walls define novel polymer patterns with varying heights relative to each other.