Abstract: In order to efficiently suppress pseudo contours, a display device has pixels arranged in a matrix arrangement, and performs display by performing digitally driving according to pixel data of an image signal. The driver divides pixel data for a single pixel into corresponding sub-frames as a plurality of bit data, and forms one frame from a specified repeating number of unit frames and digitally drives each pixel by providing the bit data to each pixel. A data analyzing circuit analyzes input data, and analyzes likelihood of occurrence of pseudo contours. A refresh rate control circuit controls the driver based on the analysis results to change a repeating number of unit frames of a single frame.

Abstract: Multiple grayscale image data is displayed efficiently. Image data is stored in a frame memory, and a predetermined bit of the image data is also stored in a pixel memory having a memory for each pixel. Video data in the pixel memory and video data in the frame memory (22) are exchanged using an input/output unit, to control display of an image in a pixel.

Abstract: The application aims at reducing the power consumption of pixels not emitting light in an active matrix organic EL panel having a static memory cell in each pixel. Each pixel circuit comprises a selection transistor (5), first (2) and second (4) drive transistors as well as a first organic EL element (1) and a second (3) organic EL element respectively connected to the first and second drive transistors. The second organic. EL element is masked and does not contribute to the pixel brightness. The current flowing through the second organic EL element is reduced by current limiting means. This current limiting means may be a second supply voltage (VDD2) used in the current path with the second organic EL element, the second supply voltage being lower than the corresponding first supply voltage (VDD1) of the current path with the first organic EL element. Alternatively, the current limiting means may comprise a current limiting transistor (11) or a diode-connected transistor (13).

Abstract: An active matrix display device (1) having a plurality of pixels arranged in a matrix includes a frame memory (4) storing one frame of image data, a sub-frame timing generator circuit (2) controlling the timing of reading data from the frame memory, and a display portion (7) performing display according to the data output from the frame memory. The sub-frame timing generator circuit (2) is able to generate a plurality of read timing patterns each for displaying a different number of sub-frames per frame, that means each pattern is associated with how many times data is to be displayed in one frame. A mode setting signal determines the number of sub-frames per frame to be used and data is read from the frame memory according to the corresponding read timing pattern.

Abstract: A display device formed by arranging pixel circuits in a matrix, wherein each pixel circuit includes a self-emissive element; a drive transistor for driving the self-emissive element; and a resistor element serially connected between the self-emissive element and the drive transistor.

Abstract: A data writable and readable pixel is provided. The pixel includes a transistor which is turned on or off by a selection signal on a selection line; a static memory (a memory including two drive transistors connected to a data line through the transistor; and light emitting devices undergoing control of light emitting according to the storage state of the static memory. In a write mode, the selection transistor is turned on, while, at the same time, data on the data line is set to write the data in the static memory. In a read mode, the selection transistor is turned on, and, at the same time, the data line is set to a floating state, and the stored content of the static memory is read onto the data line.

Abstract: An active matrix display device, wherein each pixel includes a plurality of selectable divided pixels, wherein each divided pixel has a 1-bit static data storage element and emits light based on supplied data; and the plurality of divided pixels each produces a weighted amount of light so that the selected divided pixels will cause a predetermined amount of light to be produced.

Abstract: A data driver, for sequentially supplying image data of each pixel to a display panel having pixels arranged in a matrix layout, for every line, includes a frame memory for storing pixel data having multiple-bits per single pixel in single screen segments; and a structure for converting from multiple-bit pixel data for a single line segment read out in single line units from the frame memory, into single bit pixel data corresponding to a subframe, in single frame units, wherein pixel data for a single line that has been converted to single-bit data by the conversion structure is output simultaneously for a single line.

Abstract: An organic EL display device capable of preventing generation of pseudo contours is provided. Digital data of pixels in one frame is stored in a frame memory, and display is performed according to the stored digital data. One frame is divided into a plurality of unit frames, each of which is divided into a plurality of sub-frames. In each of the sub-frames, display is performed for a bit corresponding to the digital data.

Abstract: A data driver supplies data to a data line provided corresponding to a pixel column. A selection driver sequentially supplies a selection signal to a selection line provided corresponding to a pixel row. The selection driver has a shift register which receives a supply of a shift clock and sequentially transfers a selection signal to a register of a plurality of stages, and a plurality of switches which are connected to outputs of the stages of the register of the shift register and control supply of a selection signal to plurality of selection lines. By sequentially switching a plurality of switches connected to the output of the register ON while a selection signal is output from one register of the shift register, data is supplied to pixels arranged in a matrix form to a display array.

Abstract: A method of manufacturing a full-color organic EL panel in which pixels emitting light of different colors are formed by selectively depositing an organic material on a pixel-by-pixel basis, wherein, a deposition process of depositing an organic material for emitting light of at least one color includes a first step of depositing an organic material for emitting light of at least one color, using a first mask, on a first group of pixels corresponding to openings of the first mask, and a second step of depositing an organic material for emitting light of the same color as the one color, using a second mask, on a second group of the pixels corresponding to openings of the second mask.

Abstract: During image display, pixel current measurement for brightness irregularity correction is carried out. Display is carried out by sequentially writing pixel data in a horizontal direction to pixel sections that are arranged in a matrix shape. Horizontal power supply lines PVDD are arranged for each horizontal line, and power is supplied from these power supply lines to corresponding pixel sections. When carrying out measurement of pixel current by lighting pixel sections one at a time, a horizontal power supply line PVDD of a horizontal line to which the lit pixel belongs is connected to a power supply PVDDb by a switch, and other horizontal power supply lines PVDD are connected to PVDDa.

Abstract: An organic EL display including a plurality of digital data lines; a plurality of analog data lines; a plurality of pixels arranged in a matrix, each pixel having a digital sub-pixel connected to one of the plurality of digital data lines and an analog sub-pixel connected to one of the plurality of analog data lines; and a plurality of hybrid data drivers, each connected to the respective digital data line and the respective analog data line, for receiving input data, dividing the input data into digital data and analog data, and supplying digital data to the respective digital data line and analog data to the respective analog data line

Abstract: A pixel circuit includes an organic EL element includes a storage capacitor charged with a data voltage; a first driving transistor responsive to charged voltage of the storage capacitor to supply drive current to the organic EL element; and a second driving transistor connected the storage capacitor and a predetermined power supply responsive to potential corresponding to a voltage drop in the organic EL element, and supplies charge current to the storage capacitor, circuitry for causing the second driving transistor to supply charge current to the storage capacitor from a time when the storage capacitor is charged with data voltage and the drive current from first driving transistor flows through the organic EL element. When drive current from the first driving transistor is stopped by changes in the charged voltage of storage capacitor, the drive current supplied to the organic EL element for a period corresponding to the data voltage.

Abstract: A method of detecting a defect in a display panel, includes providing a display panel comprising a plurality of pixels arranged in a matrix form, wherein each pixel comprises a static memory and emits light according to data stored in the static memory; writing data to the static memory of each pixel; reading the data stored in the static memory of each pixel; and comparing the data written and read for each pixel to produce a respective comparison result indicating presence of a defect.

Abstract: A pixel circuit including a storage capacitor to which data is written including a black level; a second driving transistor supplies a drive current corresponding to data written to the storage capacitor to a second organic electroluminescence element; a first driving transistor supplies to a first organic electroluminescence element drive current that reflects brightness degradation or current degradation in the second organic electroluminescence element, wherein the second driving transistor supplies a predetermined drive current to the second organic electroluminescence element including data of the black level; and the drive voltage of the first driving transistor is set to a voltage reflecting the brightness degradation or current degradation in the second organic electroluminescence element.

Abstract: An active matrix display device, wherein a unit pixel comprising a plurality of sub-pixels is correlated to video data having bits corresponding to a plurality of gray scale levels for a pixel, one bit of the video data is correlated to at least one frame display sub-pixel in the unit pixel, directly written onto the frame display sub-pixel, and displayed for one frame period, and the remaining plurality of bits of the video data are temporarily stored in a frame memory, separated into sub frames and written onto at least one other sub-frame display sub-pixel of the unit pixel, and displayed separately for sub-frame periods.

Abstract: A display device which includes a plurality of adjacent gate lines and drain lines disposed in a display area of the display device, and a plurality of pixels disposed in the display area, each of the plurality of pixels having a switching element coupled to a corresponding one of the plurality of adjacent gate lines and a corresponding one of the plurality of drain lines. During one frame period, the plurality of adjacent gate lines are selected, and thereby video signals are written into the plurality of pixels via the plurality of drain lines, and thereafter during the one frame period, the plurality of adjacent gate lines are selected, and thereby signals corresponding to blanking data are written into the plurality of pixels.

Abstract: A liquid crystal display device for displaying video data having a detection circuit for detecting a luminance distribution based on video data which is inputted, the luminance distribution being indicative of generation frequency of gradations in each of divided region which includes a plurality of gradations. The display device includes a determination circuit for determining at least one of a plurality of divided regions of higher generation frequency of gradation than that of other divided regions based on the luminance distribution, a correction circuit for correcting the video data so as to make a luminance characteristic of the at least one of the plurality of divided regions of higher generation frequency of gradation more abrupt than a luminance characteristic of the other divided regions, and a liquid crystal display panel for displaying the corrected video data. A width of the divided region is changeable.

Abstract: A method for equalizing deterioration in a display device having a plurality of pixels and each pixel has a self-emissive type display element includes applying an equal voltage to the display elements in a plurality of pixels causes the pixels to illuminate so that a comparatively smaller current flows in the display element with a large deterioration, while a comparatively larger current flows in the display element with a small deterioration, thereby equalizing deterioration in the display elements.