Abstract: Using the same image sensor to capture a two-dimensional (2D) image and three-dimensional (3D) depth measurements for a 3D object. A laser point-scans the surface of the object with light spots, which are detected by a pixel array in the image sensor to generate the 3D depth profile of the object using triangulation. Each row of pixels in the pixel array forms an epipolar line of the corresponding laser scan line. Timestamping provides a correspondence between the pixel location of a captured light spot and the respective scan angle of the laser to remove any ambiguity in triangulation. An Analog-to-Digital Converter (ADC) in the image sensor operates as a Time-to-Digital (TDC) converter to generate timestamps. A timestamp calibration circuit is provided on-board to record the propagation delay of each column of pixels in the pixel array and to provide necessary corrections to the timestamp values generated during 3D depth measurements.

Abstract: An electronic device with ultrasonic touch is provided. The electronic device includes a display device, an ultrasonic transmission device, an ultrasonic reception device, a substrate, an ultrasonic controller, and a sensing circuit. The substrate is adjacent to the ultrasonic transmission device and the ultrasonic reception device. The ultrasonic controller generates a control signal. The ultrasonic transmission device generates an ultrasonic wave in a direction toward the substrate according to the control signal, and the ultrasonic reception device simultaneously receives the ultrasonic wave according to the control signal through the substrate and generates a sensing signal corresponding to the received ultrasonic wave. The sensing circuit determines a position whether a touch occurs according to the sensing signal to generate a touch signal.

Abstract: Brightness irregularities that develop in a light emitting device due to is persion among pixels in the threshold values of TFTs used for supplying electric current to light emitting devices become obstacles to improved image quality of the light emitting device. As an image signal input to a pixel from a source signal line, a desired electric potential is applied to a gate electrode of a TFT for supplying electric current to an EL device, through a TFT having its gate and drain connected to each other. A voltage equal to the TFT threshold value is produced between the source and the drain of the TFT 105. An electric potential in which the image signal is offset by the amount of the threshold value is therefore applied to the gate electrode of the TFT. Further, TFTs are disposed in close proximity to each other within the pixel, so that dispersions in the TFT characteristics do not easily develop.

Abstract: A GPU is generally configured to detect changes in the rate of frame generation that can result from, for example, changes in the complexity of the frames being generated. In response to detecting the change in the rate of frame generation, the GPU identifies a corresponding change in the refresh rate that would be required to fully synchronize the refresh rate with the rate of frame generation. If the change in the refresh rate falls outside the boundaries of a specified or dynamically generated window, the GPU limits the change in refresh rate to the corresponding boundary.

Abstract: A display device comprises: selector transistors in each of which one of conductive electrodes is connected to each of ends of gate lines, the selector transistor being divided into a plurality; selection signal supplying wirings each of which is provided in each block, and connected to each control electrode of the selector transistors corresponding to the block; gate voltage supplying wirings that are commonly connected to the other conductive electrode of each of the selector transistors; a gate driver that sequentially supplies a gate voltage to the gate voltage supplying wirings while supplying a control voltage to the selection signal supplying wiring in order to on or off the selector transistor, and a light shielding part that is disposed between at least the two adjacent blocks.

Abstract: A display device and screen displaying method are provided in this disclosure. The screen displaying method includes the following operations: detecting whether a noise signal on a conducting wire by a detecting unit; outputting a horizontal synchronizing signal and a data signal to a source driving circuit by a timing controller; wherein the data signal includes a first frame data voltage and a second frame data voltage according to the timing sequence; and receiving the first frame data voltage and the second frame data voltage by the source driving circuit, when the detecting unit is configured to detect the noise signal, the processor is configured to selectively output the first frame data voltage or the second frame data voltage.

Abstract: A system is provided for controlling an array of pixels in a display in which each pixel includes a light-emitting device and a reference voltage source that controllably supplies a reference voltage having a magnitude that turns off the light-emitting device. While the reference voltage is coupled to a drive transistor, a control voltage is supplied to the gate of the drive transistor to cause the drive transistor to transfer to a node common to the drive transistor and the light-emitting device, a voltage that is a function of the threshold voltage and mobility of the drive transistor. During an emission cycle, the current conveyed through the light emitting device via the drive transistor is controlled by a voltage stored in the storage capacitor, which is a function of the threshold voltage and mobility of the drive transistor so that the current supplied to the light-emitting device remains stable.

Abstract: A computer system includes a display configured to receive a display signal; a sensor configured to provide a control signal indicative of the presence of a user in a predefined area in front of the display; a control unit configured to select an operating mode from a plurality of operating modes, and a first energy management function configured to control an operating state of the display based on a selected operating mode, wherein the interface circuitry is configured to transmit first control data indicating the presence or absence of the user in front of the display by a manufacturer-specific virtual control panel VCP back to a computing device; and wherein the computing device includes a second energy management function configured to switch the computing device into an operating state based at least on the first control data indicating the presence or absence of the user in front of the display.

Abstract: A display device includes: a display unit including pixels each including a holding circuit that holds a pixel signal; a driver that drives the pixels based on image signals and supply the pixel signal to the holding circuit of each pixel; an encoding circuit that encodes the image signals on a frame basis; storage that stores data resulting from encoding; a determination circuit that determines whether the image signals for consecutive frames are moving image signals or still image signals; and a controller that controls the driver based on the image signals and the result of the determination circuit. The controller brings the driver into a first state for driving the pixels based on the image signals when the result indicates the moving image signals, and into a second state for causing at least part of the driver to stop operating when the result indicates the still image signals.

Abstract: A power supply circuit supplies a direct current voltage to an audio processing device. The power supply circuit includes: a converting circuit configured to convert an alternating current voltage into a DC voltage; a detection circuit configured to detect a state in which the AC voltage lower than a threshold continues for a given period of time; and a notification circuit configured to, when the detection circuit detects the state representative of an AC voltage drop, notify the audio processing device of the AC voltage drop.

Abstract: A pixel may include a switching transistor connected to a data line and a first node, having a gate electrode connected to a scan line, a sustain transistor connected to a sustain voltage and the first node, having a gate electrode connected to the scan line, a storage capacitor connected to the first node and the second node, a driving transistor connected to the first power source voltage and a third node, having a gate electrode connected to the second node, a compensation transistor connected to the second node and the third node, having a gate electrode connected to a control line, a reset transistor connected to an initializing voltage and the second node, having a gate electrode connected to a reset control line, and an organic light emitting diode including an anode connected to the third node and a cathode connected to the second power source voltage.

Abstract: A frame region of one of the display units (i) includes a terminal portion provided with terminals whose terminal surfaces are flush with a display surface, and (ii) is bent to allow the terminal surface of the terminal portion to be oriented to the opposite side of the display surface. A frame region of the other one of the display units includes a terminal portion provided with a terminals whose terminal surfaces are flush with a display surface. The terminal portions of the two display units are bonded to each other to allow the two terminals to be electrically connected to each other.

Abstract: A gate driving circuit and a display panel with the gate driving circuit are provided. The gate driving circuit includes shift registers for providing scan signals to gate lines of the display panel. Each shift register includes a main circuit and a discharge circuit. In the main circuit, a pre-charge unit is coupled to a first node and is configured to output a pre-charge signal to the first node, a pull-up unit is coupled to the first node and a second node and is configured to output an mth stage scan signal of the 1st to Nth stage scan signals to the second node; and a reset unit is coupled to the first node and is configured to receive a reset signal. In the discharge circuit, a pull-down unit is coupled to the first node and the second node and is configured to receive a pull-down control signal.

Abstract: A plurality of signal lines are classified into k signal line groups (where k is an integer equal to or greater than 2). When the k signal line groups are supplied with an image signal during a horizontal scanning period, a driving unit supplies some of the k signal line groups with a precharge signal and subsequently an image signal, and does not supply the remainder of the k signal line groups with the precharge signal and supplies the remainder of the k signal line groups with the image signal.

Abstract: A display device including a light-emitting diode, a first transistor configured to supply a driving current to the light-emitting diode, a second transistor configured to transmit a data signal to the first transistor, a third transistor configured to transmit the data signal compensated with a threshold voltage to a gate electrode of the first transistor, a first scan line connected to a gate electrode of the second transistor, a second scan line connected to a gate electrode of the third transistor and insulated from the first scan line, and a conductive pattern connected to the gate electrode of the first transistor and insulated from the first scan line and the second scan line. The conductive pattern overlaps the first scan line and the second scan line, and the conductive pattern includes a stem part extending in one direction and a branch part branching from the stem part and overlapping the first scan line.

Abstract: An electronic display provides pulse-width modulation (PWM), data loading, and calibration. The electronic display includes: a light emitting diode (LED); a driving transistor including a source connected to a first terminal of the LED; a first transistor including a source connected to a second terminal of the LED and a gate connected to a scan driver; a storage capacitor having a first node connected to a gate of the driving transistor, and a second node connected to a drain of the first transistor; a second transistor configured to selectively couple the first node of the storage capacitor to a data driver; and a third transistor configured to selectively couple the second node of the storage capacitor to a calibration driver so that the storage capacitor provides a gate voltage corresponding to a sum of the data voltage and the calibration voltage to the gate of the driving transistor.

Abstract: Provided is a display including a very-small light-emitting diode (LED) and a method of manufacturing the same. The display includes a panel in which first and second signal lines are disposed in a lattice form, an LED module including an electrode assembly having a first electrode connected to the first signal line, a second electrode connected to a ground, and a plurality of very-small LEDs connected to the first and second electrodes, and two or more switches which connect the first and second electrodes to the first signal line, wherein the second electrode is connected to a common electrode formed on the panel, at least one other LED module is grounded to the common electrode, and the two or more switches selectively provide a current supplied through the first signal line to the first electrode on the basis of a signal of the first and second signal lines.

Abstract: A method of operating a display device involves detecting whether a frame mode of the display device is a normal mode in which image data are received with a constant frame rate or a variable frame mode in which the image data are received with a variable frame rate. An output buffer drivability of a data driver included in the display device may be set according to the detected frame mode, and an image is displayed by outputting data voltages corresponding to the image data with slew rates corresponding to the set output buffer drivability. Power consumption in output buffer amplifiers may be selectively lowered by setting a relatively low output buffer drivability corresponding to a relatively low slew rate.

Abstract: A display driver includes a D/A converter circuit configured to convert display data into a gradation voltage, an amplifier circuit including an input node to which the gradation voltage is input and configured to output data voltage, and a supply circuit configured to supply an auxiliary current or an auxiliary electrical charge to the input node of the amplifier circuit. In an auxiliary period, an output of the D/A converter circuit is in a high impedance state, and the supply circuit supplies the auxiliary current or the auxiliary electrical charge to the input node of the amplifier circuit. In a non-auxiliary period after the auxiliary period, the D/A converter circuit outputs the gradation voltage to the input node of the amplifier circuit.

Abstract: When gradation of a mixed video signal is equal to or less than a predetermined gradation, a subframe data generator generates subframe data so that an applied voltage to a display element is turned off during a first predetermined period from a start of the frame of a video signal for a visible light image or a video signal for an infrared light image. A light source controller turns on a visible light source after a lapse of a second predetermined period from a start of the frame of the video signal for a visible light image, and turns off the visible light source at the timing when the frame of the video signal for a visible light image is ended.

Abstract: A display driver that includes a first driver integrated circuit being cascaded to a second driver integrated circuit is introduced. The first driver integrated circuit includes a first gamma voltage generator that is configured to output a plurality of first gamma voltages to output terminals of the first gamma voltage generator. The second driver integrated circuit includes a second gamma voltage generator that is configured to output a plurality of second gamma voltages to output terminals of the second gamma voltage generator. Each of the output terminals of the first gamma voltage generator is corresponded to one of the output terminals of the second gamma voltage generator. At least one of the output terminals of the first gamma voltage generator is electrically coupled to the corresponding one of the output terminals of the second gamma voltage generator to output at least one common gamma voltage of the first gamma voltages and the second gamma voltages.

Abstract: A display device including a peripheral circuit portion with high operation stability. The display device includes a first substrate and a second substrate. A first insulating layer is on a first plane of the first substrate, and a second insulating layer is on a first plane of the second substrate. An area of the first plane of the first substrate is the same as an area of the first plane of the second substrate. The first plane of the first substrate and the first plane of the second substrate face each other. A bonding layer is between the first insulating layer and the second insulating layer. A protection film is in contact with the first substrate, the first insulating layer, the bonding layer, the second insulating layer, and the second substrate.

Abstract: A display device includes a processor and a display panel. The processor is configured to output multiple display signals. The display panel includes multiple display units and multiple temperature sensors. The display units are electrically coupled to the processor and configured to receive the multiple display signals to provide a display screen. The temperature sensors are electrical coupled to the processor and configured to detect the temperature of different areas of the display panel so as to transmit multiple detection signals to the processor so that the processor adjusts at least one of the display signals.

Abstract: Embodiments of this present disclosure may include a system that include multiple processing devices and an open ring communication bus communicatively coupled to each of the processing devices. Each processing device may use a control application to perform an operation on an industrial automation system. The control application of each processing device may output data related to the operation of the open ring communication bus during a respective timing interval used for communication via the open ring communication bus.

Abstract: A method for reducing operating temperature of a source driving circuit and a display system are provided. The method for reducing operating temperature of a source driving circuit includes enabling an over-temperature protection operation by the source driving circuit; and transmitting, by the source driving circuit, a first signal to a timing controller in response to detecting a temperature increasing to be higher than the first threshold temperature, wherein the timing controller is configured to operate a temperature reducing operation in response to receiving the first signal.

Abstract: A display apparatus in which selection circuits and display blocks are arranged is provided. Each of the display blocks include signal lines extending in a column direction, and pixels connected to the signal lines and arranged in a matrix in the column direction and in a row direction crossing the column direction. Each of the selection circuits selects a signal line in a predetermined order to supply an image signal among the signal lines such that the image signal is written in each of the pixels arranged in the row direction among the pixels. A time to select at least one signal line among the signal lines and supply the image signal is different from a time to select a signal line other than the at least one signal line among the signal lines and supply the image signal.

Abstract: A display device includes: a first substrate including a display area at which an image is displayed, a non-display area adjacent to the display area, and a first bent portion in the non-display area thereof, the first bent portion disposed in a plane inclined to a plane in which the display area is disposed; a second substrate opposing the first substrate; and a sealing portion which is disposed in the non-display area and attaches the first substrate and the second substrate to each other.

Abstract: The present invention includes: a first decoder that outputs mutually different two voltages as first and second selection voltages based on a first bit group of a digital data signal in a first selection state, and outputs one or both of the two voltages as the first and the second selection voltages in a second selection state; a second decoder that outputs mutually different two voltages as third and fourth selection voltages based on a second bit group of the digital data signal in the first selection state and outputs one voltage based on the second bit group as the third and the fourth selection voltages in the second selection state; and an amplifier circuit that averages a combination of the first and the second selection voltages or the third and the fourth selection voltages with predetermined weighting ratios and outputs the averaged voltage.

Abstract: A display apparatus includes a display panel including: a bending region having a curvature region and a facing region adjacent to the curvature region; and a non-bending region adjacent to the bending region and spaced apart from the facing region. The curvature region is disposed between the facing region and the non-bending region. The display apparatus further includes: a first protective member disposed in the non-bending region; a flexible circuit board connected to the display panel in the facing region; a stress relief member disposed in the curvature region; and an adhesive member disposed in the facing region. The adhesive member has a higher modulus of elasticity than that of the stress relief member and is coupled to the flexible circuit board.

Abstract: In an embodiment, a computing device includes a processor and a machine-readable storage medium storing instructions. The instructions may be executable by the hardware processor to: monitor a user input device during presentation of video frames on a display device with a refresh rate at a first level; determine whether a time period since a last user interaction with the user input device exceeds a time threshold; and reduce the refresh rate of the display device to a second level in response to a determination that the time period since the last user interaction exceeds the time threshold. Other embodiments are described and claimed.

Abstract: An organic light emitting display device includes a pixel, a data line, a first scan line, a second scan line, and a scan driver. The pixel includes a first transistor, a second transistor, and a third transistor. A source of the first transistor is electrically connected to a drain of the third transistor. A source of the second transistor is configured to receive an initialization voltage. The data line is electrically connected to a source of the third transistor and may transmit a data voltage higher than the initialization voltage. The first scan line is electrically connected to a gate of the third transistor. The second scan line is electrically connected to a gate of the second transistor. The scan driver may provide an initializing scan signal to the second scan line at least two horizontal periods before providing an initial scan signal to the first scan line.

Abstract: A display device is disclosed, which includes: a first substrate; a first transistor disposed on the first substrate and including a first gate electrode, a first drain electrode, a first source electrode, and a first oxide semiconductor layer, wherein the first oxide semiconductor layer is oppositely disposed on the first gate electrode, and the first drain electrode and the first source electrode are electrically connected to the first oxide semiconductor layer; and a second transistor disposed on the first substrate and including a second gate electrode, a second drain electrode, a second source electrode, and a silicon semiconductor layer, wherein the second gate electrode is oppositely disposed on the silicon semiconductor layer, the second drain electrode and the second source electrode are electrically connected to the silicon semiconductor layer, and the first gate electrode is electrically connected to one of the second drain electrode and the second source electrode.

Abstract: Disclosed is a display device including: a driving transistor, a first switching transistor, and a pixel transistor each having a gate and a pair of terminals; a storage capacitor having a pair of terminals; and a light-emitting element having an input terminal and an output terminal. One terminal of the driving transistor is electrically connected to one terminal of the pixel transistor. The other terminal of the driving transistor is electrically connected to one terminal of the first switching transistor and the input terminal of the light-emitting element. The other terminal of the first switching transistor is electrically connected to the gate of the driving transistor and one terminal of the capacitor. The one terminal of the capacitor overlaps with an active region of the driving transistor.

Abstract: An aircraft cockpit display includes among other things an LCD panel having a liquid crystal matrix, and backlight assembly for illuminating the liquid crystal matrix. The remainder of the display allows for single point failures within the architecture that impact only a portion of the primary display functions of the LCD panel.

Abstract: Described herein are embodiments of a mobile device case that allows a mobile device camera to view and/or capture images from multiple fields of view. The case may allow the mobile device camera to simultaneously capture image information from multiple different directions relative to the camera or mobile device. The fields of view may not be contiguous fields of view, such that there is a gap or other discontinuity between the fields of view. One field of view may be a field visible from or facing a surface of the mobile device on which the camera is disposed (e.g., the back of the mobile device) and another field of view may be one visible from or facing a different surface of the mobile device. Also described are embodiments of techniques for configuring a mobile device to capture and/or process images from multiple fields of view.

Abstract: A display apparatus includes a plurality of gate drivers, a scan indication signal transmission line, a plurality of subsidiary transmission lines, and a plurality of auxiliary lines. The gate drivers are sequentially coupled in series to each other. The scan indication signal transmission line is configured to transmit a scan indication signal. The subsidiary transmission lines are sequentially coupled between two adjacent gate drivers, respectively. The auxiliary lines are respectively disposed between the scan indication signal transmission line and the subsidiary transmission lines. One of the auxiliary lines is selected to be electrically coupled to the scan indication signal transmission line and the corresponding subsidiary transmission line.

Abstract: A display panel has a display area and a non-display area surrounding the display area. The display area has a first side and a second side opposite to the first side, and includes: a hollow area having first and second edges; and first to fourth display areas. The display panel includes: a driving chip arranged in the non-display area close to the first side; first data lines arranged in the first display area; second data lines arranged in the second display area; third data lines arranged in the third display area; and fourth data lines arranged in the fourth display area. The first edge is close to the driving chip and the second edge is away from the driving chip, and each second signal line is connected to at least two third data lines through a signal switching circuit.

Abstract: Disclosed herein is an organic light emitting diode (OLED) display device capable of improving image sticking improvement capability by expanding an image shift orbit or changing the shape of an image shift orbit using a maximum shift range. An image processor of an OLED display device independently determines a pixel shift amount in a horizontal direction and a pixel shift amount in a vertical direction in consideration of a maximum shift range in each of the horizontal and vertical directions, simultaneously applies the determined pixel shift amounts in the horizontal and vertical directions to shift a source image, and outputs the shifted image.

Abstract: A directional optical waveguide includes a time division multiplexing unit and N layers of optical waveguides that have a same light-emitting direction and that are stacked, a light-emitting surface of each layer of optical waveguide being provided with a pixel-type grating; the time division multiplexing unit being configured to hierarchically control, within each frame video stream cycle, the N layers of optical waveguides to introduce a source light ray into a corresponding pixel-type grating during a corresponding frame video period, and the source light ray that is introduced into the pixel-type grating being diffracted in the pixel-type grating to form a plurality of first-order diffraction light rays that have different diffraction angles and diffraction azimuth angles and are in a one-to-one correspondence with display pixels, to be incident on a next layer of optical waveguides.

Abstract: In some embodiments, a threshold calibration system to provide a zero voltage switching signal is presented. The system includes a divider coupled to a switching node; a calibration ramp generator; a reference voltage generator; a comparator; a first multiplexer coupled to receive a divider output signal from the divider and a calibration ramp signal from the calibration ramp generator and provide a signal to the comparator based on a calibration enable signal; a second multiplexer coupled to receive reference voltages from the reference voltage generator, the second multiplexer provided a threshold signal to the comparator; and a digital feedback circuit receiving an output signal from the comparator and providing the zero voltage switching signal.

Abstract: In some embodiments, a display device includes one or more waveguides having a vapor deposited light absorbing film on edges of the waveguide to mitigate ghost images. In some embodiments, the film is formed directly on the edge of the waveguide by a vapor deposition, such as an evaporative deposition process. In some embodiments, the light absorbing films may comprise carbon, for example carbon in the form of one or more allotropes of carbon, such as fullerenes, or black silicon.

Abstract: Methods and apparatuses relating to controlling an emission of a display panel. In one embodiment, a display driver hardware circuit includes row selection logic to select a number of rows in an emission group of a display panel, wherein the number of rows is adjustable from a single row to a full panel of the display panel, column selection logic to select a number of columns in the emission group of the display panel, wherein the number of columns is adjustable from a single column to the full panel of the display panel, and emission logic to select a number of pulses per data frame to be displayed, wherein the number of pulses per data frame is adjustable from one to a plurality and a pulse length is adjustable from a continuous duty cycle to a non-continuous duty cycle.

Abstract: A display driving circuit is provided. The display driving circuit includes: at least one gate driving circuit, each of the at least one gate driving circuit generating a driving signal so that display pixels update pixel data according to each of the driving signals; and at least two enable-selecting circuits, generating a zone start-updating signal and a zone end-updating signal according to a zone scan-control signal and the driving signals and enabling the at least one gate driving circuit of a first portion according to the zone start-updating signal and the zone end-updating signal. In this way, the at least one gate driving circuit of the first portion generates the driving signals to update part of the display pixels, and that power saving is achieved.

Abstract: A method, apparatus and computer program product for presenting a user interface for a conversational system is described. A unified semantic representation of conversational content between a user and conversational system is created as a contextual graph of concepts and relations. A set of subgraph components of the semantic contextual graph dynamically identified based on a current dialog activity. The identified set of subgraph components in a user interface as a set of graphical elements representing respective concepts and relations.

Abstract: A display apparatus includes: a substrate having a display area and a non-display area; a plurality of gate lines extending in a first direction disposed on the display area of the substrate; and a driver disposed on the non-display area, the driver including: a plurality of stages connected to the plurality of gate lines; a first voltage line and a second voltage line that are connected to the plurality of stages to respectively supply a first direct current (DC) voltage and a second DC voltage to the plurality of stages; and at least one capacitor connected to at least one of the plurality of stages, the at least one capacitor including a pair of electrodes, wherein one of the electrodes is electrically connected to one of the first voltage line and the second voltage line.

Abstract: A display device includes a display panel in which a plurality of gate lines, a plurality of data lines, and a plurality of subpixels are disposed; a gate driver circuit driving the plurality of gate lines; and a data driver circuit driving the plurality of data lines, wherein the data driver circuit outputs a detection set voltage to at least one data line among the plurality of data lines during a blank period, and the detection set voltage is higher than a detection reference voltage, and wherein the data driver circuit stops outputting a data voltage to the at least one data line during at least one period of active periods after the blank period if a voltage of the at least one data line which the detection set voltage is supplied to be lower than the detection reference voltage during the blank period.

Abstract: A diffraction grating with independently controlled diffraction angles for optical beams at different wavelengths may be used to redirect and couple light to a waveguide in an efficient, space-saving manner. The diffraction grating can include a layer with optical permittivity and associated index contrast of the grating grooves at different grating periods dependent on wavelength.

Abstract: A display device includes a display panel including a plurality of pixel circuits each having a light-emitting element, the display panel being divided into a plurality of display regions comprising respective groups of the pixel circuits, and a display panel driving circuit configured to drive the display panel by sequentially performing an emission preparation operation, a scan operation, and an emission operation for the pixel circuits, and configured to perform the emission operation independently on each of the display regions, wherein, in each frame, the display panel driving circuit is configured to calculate a region grayscale that each of the display regions is to implement by analyzing grayscale data to be applied to the pixel circuits in each of the display regions, and to change a length of an emission period for each of the display regions based on the calculated region grayscale, the emission operation being performed in the emission period.

Abstract: A dot matrix display device includes a pixel redraw control unit and a decoder unit. The pixel redraw control unit generates a gate selection signal identifying an address in one direction, a source selection signal identifying an address in another direction intersecting the one direction, and image data which correspond to a pixel electrode part based on a serial signal including an address signal identifying an address of the pixel electrode part and an image signal supplied to the pixel electrode part. The decoder unit supplies a gate signal which activates a gate signal line corresponding to the pixel electrode part based on the gate selection signal, generates a source signal which activates a source signal line corresponding to the pixel electrode part based on the source selection signal, and supplies the image data to the pixel electrode part corresponding to the activated source signal line.

Abstract: A storage device stores dither patterns composed of a three-dimensional block consisting of the number H of dots in a horizontal direction×the number V of lines in a vertical direction×the number F in a frame direction. Each value from a minimum value to a maximum value of dither values of n bits is written in each address of the storage device. When each value is written into the storage device, processing of obtaining a spatiotemporal density value indicating a degree of density of an address in which a dither value has already been written in a three-dimensional predetermined area centered on each of the addresses in which a new dither value is writable, and processing of selecting an address having the smallest spatiotemporal density value among the addresses in which a new dither value is writable and writing a dither value are repeated.