8478 results about "Scan line" patented technology

When a signal inputted to a pixel is erased by setting potentials of a gate terminal and a source terminal of a driving transistor to be equal, a current slightly flows through the driving transistor in some cases, which leads to occur a display defect. The invention provides a display device which improves the yield while suppressing the increase in manufacturing cost. When a potential of a scan line for erasure is raised, a potential of the gate terminal of the driving transistor is raised accordingly. For example, the scan line and the gate terminal of the driving transistor are connected through a rectifying element.

A virtual image is registered among a perceived real world background. Tracking light is scanned into the real world environment, which includes at least one detector pair. A first time and a second time at which the tracking light impinges on the first detector is detected, in which the first time and second time occurs within adjacent scan lines. A time at which a horizontal scan line edge (e.g., beginning of scan line or end of scan line) is encountered is derived as occurring one half way between the first time and the second time. The horizontal location of the first detector then is determined within a specific scan line inferring the scan line edge time. The vertical location of the detector is determined within a scan frame by measuring time duration using the beginning of the frame. By determining a location independently from the temporal resolution of the augmented imaging system, the temporal location of the detector is identified to a sub-pixel/sub-line precision. The augmented image is registered either to a 3D real world spatial coordinate system or to a time domain coordinate system based upon tracked position and orientation of the user.

A driving transistor for outputting a current for driving an organic electroluminescent (EL) element is formed on a pixel circuit of an organic EL display. A first capacitor is coupled between a power supply voltage and a gate of the driving transistor, and a second capacitor is coupled between the gate and a scan line. First a voltage matched with a data current is stored in the first capacitor in response to a select signal from the scan line. The voltage of the first capacitor is changed by variation of the select signal's voltage level. A driving current is output from the transistor because of the changed voltage of the first capacitor, and the organic EL element emits light as a result of the driving current.

A pixel circuit for active matrix OLED and driving method is proposed in this invention, which includes five transistors and one capacitance, it's mainly use a first-transistor connected to a control line to let a second transistor connected to the former scan line off when writing a low voltage in, so to avoid large current generation and IR-drop, finally the illumination will be more uniform than prior art.

A pixel circuit in an organic light emitting device capable of realizing high gradation representation by self-compensating a threshold voltage, and a method for driving the same. The pixel circuit includes an electroluminescent element for emitting light in response to an applied driving current. A first transistor delivers a data signal voltage in response to a current scan line signal. A second transistor generates a driving current to drive the electroluminescent element in response to the data signal voltage. A third transistor connects the second transistor in the form of a diode in response to a current scan signal to self-compensate the threshold voltage of the second transistor. A capacitor stores the data signal voltage delivered to the second transistor. A fourth transistor delivers a power supply voltage to the second transistor in response to a current light-emitting signal. A fifth transistor provides the driving current, provided from the second transistor, for the electroluminescent element in response to the current light-emitting signal.

A light emission display includes data lines, scan lines, and pixel circuits. A pixel circuit of the pixel circuits includes: a light emission element; a first transistor including a control electrode and first and second electrodes, the first transistor outputting a current corresponding to a voltage between the first electrode and the control electrode; a first switch coupled between the control electrode of the first transistor and the light emission element and for receiving a first control signal; a first capacitor coupled to the first transistor; a second capacitor coupled between a first power source and the first capacitor; a second switch for coupling the first capacitor and a second power source in response to a second control signal; and a third switch for applying a data voltage to the first capacitor in response to a select signal provided by one of the scan lines.

An organic light emitting display device includes: a plurality of pixels at crossing portions of data lines, scan lines, and emission control lines; a sensor for sensing degradation information of organic light emitting diodes and mobility information of driving transistors, which are included in each pixel; a converter for storing the degradation information of organic light emitting diodes and the mobility information of driving transistors, which are sensed utilizing the sensor and converting input data to corrected data by utilizing the stored information; and a data driver receiving the corrected data and generating data signals to be supplied.

Directions normal to images of an object captured by at least two cameras from different points of view are aligned with each other to form corrected object images, and a correspondence is determined between at least one pixel position on a horizontal line in one of the corrected object images and at least one pixel position on the same horizontal line in another of the corrected object images. The correspondence is determined by determining a similarity in brightness and color components at the pixel positions and a parallax between the corrected object images A robust, accurate image matching can be done by making dynamic matching between all pixels on a scan line in the images captured by the cameras.

An organic light emitting display including a scan driver for supplying scan signals to odd scan lines in an i^th frame and for supplying scan signals to even scan lines in an (i+1)^th frame, a data driver for supplying data signals corresponding to the scan signals, and an image display unit including a plurality of pixels coupled with the scan lines and the data lines. Pixels coupled with the odd scan lines do not emit light when the scan signals are supplied to the odd scan lines, and pixels coupled with the even scan lines do not emit light when the scan signals are supplied to the even scan lines.

A flat panel display with good color mixture of three primary colors to achieve different hues and little signal delay is provided. The display includes signal lines including scan lines and data lines intersecting the scan lines, both arranged along straight lines. Red, green, and blue pixel driving circuit regions are defined by the intersection of the scan lines and the data lines. The pixel driving circuit regions having the same color are arranged adjacent to one another along a column direction. Red, green, and blue pixel driving circuits are placed in the pixel driving circuit regions and are coupled to the red, green, and blue pixel electrodes. The pixel electrodes are adjacent to pixel electrodes of a different color along both row and column directions.

An organic light emitting display includes a pixel unit including a plurality of pixels arranged at intersecting points of data lines, scan lines and light emitting control lines; a temperature sensor provided to measure a temperature of the pixel unit; a first analog/digital converter (first ADC) to convert information of the temperature measured in the temperature sensor into a first digital value; a controller to receive the first digital value outputted from the first ADC and outputting a control signal corresponding to the received first digital value; a sensing unit to extract a degradation level of an organic light emitting diode included in each of the pixels; a second analog/digital converter (second ADC) to receive information of the degradation of the organic light emitting diode extracted from the sensing unit and a control signal outputted from the controller and generating a second digital value corresponding to the information of the degradation of the organic light emitting diode that is varied according to the temperature; a conversion unit to convert an input data (Data) into a correction data (Data′) so as to display an image having uniform luminance regardless of the changes in the degradation level of the organic light emitting diode according to temperature, by using the second digital value outputted from the second ADC; a data driver to receive the correction data (Data′) outputted from the conversion unit and generating data signals to be supplied to the pixels.

A graphics system including a custom graphics and audio processor produces exciting 2D and 3D graphics and surround sound. The system includes a graphics and audio processor including a 3D graphics pipeline and an audio digital signal processor. The system achieves highly efficient full-scene anti-aliasing by implementing a programmable-location super-sampling arrangement and using a selectable-weight vertical-pixel support area blending filter. For a 2×2 pixel group (quad), the locations of three samples within each super-sampled pixel are individually selectable. A twelve-bit multi-sample coverage mask is used to determine which of twelve samples within a pixel quad are enabled based on the portions of each pixel occupied by a primitive fragment and any pre-computed z-buffering. Each super-sampled pixel is filtered during a copy-out operation from a local memory to an external frame buffer using a pixel blending filter arrangement that combines seven samples from three vertically arranged pixels. Three samples are taken from the current pixel, two samples are taken from a pixel immediately above the current pixel and two samples are taken from a pixel immediately below the current pixel. A weighted average is then computed based on the enabled samples to determine the final color for the pixel. The weight coefficients used in the blending filter are also individually programmable. De-flickering of thin one-pixel tall horizontal lines for interlaced video displays is also accomplished by using the pixel blending filter to blend color samples from pixels in alternate scan lines.

A dual energy scanning densitometry system for imaging and measuring bone density maintains acceptable flux by adjusting the x-ray current or scan speed according to preceding scan line data. The amount of acceptable flux is maintained within limits modified by information about the region of the body being scanned so that different precisions may be maintained for different body regions. Scan speed and current may be controlled so that scan speed is maximized within the current limits. Essentially continuous flux control can be achieved.