| Patent application number | Description | Published |
|---|
| 20080218451 | Organic electroluminescence display - The voltage-current property of the specific pixel is measured to store the data on a single line in a line memory. The property data of adjacent pixels are compared. A failure determination unit detects whether or not the pixel to be compared is faulty. If it is determined as being faulty, the faulty pixel is removed from the pixel group to be compared. The burn-in determination unit performs the comparison using normal pixels only to provide the correct burn-in data. The calculation unit reflects the burn-in data in the image data from the host. | 09-11-2008 |
| 20080218452 | Image display apparatus - When an organic EL display apparatus enables display of a standard luminance mode and a high luminance mode, it takes long time to reset the gate potential of the OLED drive TFT to a given value in a standard mode. In the reset operation of the gate potential of an OLED drive TFT at the time of writing an image signal, in a standard mode, a precharge current is allowed to flow in the OLED element for a short period before the reset operation to set an initial value of the gate potential of the OLED drive TFT to be close to a supply potential or a reference potential. With the above operation, the variation of the OLED drive TFT gate potential after resetting is reduced. As a result, the light emitting period during one frame can be extended. Also, since a blanking period can be extended, it is possible to measure the characteristic of the OLED element by using the blanking period. | 09-11-2008 |
| 20080218453 | Organic electroluminescence display - In an organic EL display, correction is made for a difference in screen luminance between the case of measuring characteristics of OLED elements, and the case of not measuring the characteristics of the OLED elements. A data line for feeding image data items, and a detection line for measuring the characteristics of the OLED elements are connected to respective pixels. Detection of the characteristics of the OLED elements is executed by utilizing a specified period of a frame period. Because an image-displaying period is limited in a frame where measurement of the characteristics of the OLED element | 09-11-2008 |
| 20080218499 | Display device - To shorten the measuring time of the characteristics of light emission of OLED elements for feedback to image data for image display in an organic EL display device. Pixels that emit red lights, pixels that emit green lights, and pixels that emit blue lights are arranged on a screen in a matrix manner. A detection system is provided on the upper side of the screen. A detection line extending from the detection system is coupled to the respective pixels through analog switches and digital switches controlled by switch controlling lines. A detection scanning circuit is provided on the right side of the screen. Detection switch controlling lines extend from the detection scanning circuit. By appropriately selecting the analog switches, the switch controlling lines, and the detection switch controlling lines, the voltage-current characteristics of plural pixels are measured at the same time. | 09-11-2008 |
| 20080224962 | IMAGE DISPLAY DEVICE - An image display device includes switches directly connected a constant current source to a self-luminous element to be able to detect a characteristic of the self-luminous element, generate a coordinates and convert information of the characteristic and coordinates into a system communication signal, transferring an input with a temperature variation to a system side. | 09-18-2008 |
| 20080258626 | Organic EL display device - The present invention allows an organic EL display device to perform display with high definition by reducing an area of each pixel forming a display region of the display device. A drive TFT for driving an organic EL element, a storage capacitance connected with a gate of the drive TFT, and a switching TFT connected to a scanning line are used in common by pixels arranged adjacent to each other in the lateral direction and hence, areas occupied by these circuit elements per one pixel can be reduced whereby the pixel can be made small. Further, a data line for supplying a video signal and a power source line for supplying an electric current to the organic EL elements can be used in common by the pixels arranged adjacent to each other and hence, the number of data lines and the number of power source lines can be halved thus reducing an area of the pixel. Due to such a constitution, the present invention acquires an organic EL display device capable of performing display with high definition. | 10-23-2008 |
| 20080291193 | DISPLAY DEVICE - Detection voltages of self light emitting elements in a self-luminous display panel are detected by a detection circuit through a selection switch in a data line drive circuit via pixel detection switches and interactive signal lines. The detection operation is performed by making use of a power source supply time and a retracing period. | 11-27-2008 |
| 20080291224 | IMAGE DISPLAY DEVICE - With the use of pixel control parts for controlling display elements in response to display data using a display-use voltage source and display control parts for supplying the display data to the pixel control parts, the display data is displayed on a display part. Further, the display data is corrected by detecting states of the display elements. A voltage of the display-use voltage source is preliminarily set to a fixed higher voltage, and a gray scale of the display data is elevated in response to a degradation state of the display element. Accordingly, it is possible to perform a display while maintaining the maximum brightness even when the display element is degraded. Further, the contrast can be maintained by correcting the gray scales of the display data by performing only the digital calculation. | 11-27-2008 |
| 20080315890 | Image Display Device - An image display device includes a black spot defect position determination circuit which determines a position of a black-spot defective pixel of a self-luminous display panel. A detection-use current source in the black spot defect position determination circuit is connected to pixels during a period separate from a display period of data signals thus determining a black spot defect. The position of the black spot defect is stored in a storing circuit and is transmitted to a display and detection control circuit. The display and detection control circuit corrects the data signals to the pixels around the defective pixel based on a black spot defect position, and drives a data line drive circuit based on the corrected data signals thus visually correcting the black spot defect. | 12-25-2008 |
| 20090027313 | Imaging device - To determine a deterioration and maintain a high-quality image without unevenness of brightness by performing a precise correction, a detection scanning line for selecting a pixel which detects a deterioration of a pixel, a detection line for informing the outside of the display area of the property of a pixel selected for detecting the deterioration, a deterioration determination means for determining a deterioration amount based on a voltage corresponding to a current detected by the detection line, and a deterioration correction means (computation circuit) for reflecting the determination result of the deterioration determination means in image data supplied to the pixel, are provided. | 01-29-2009 |
| 20090027314 | Imaging device and method of correction pixel deterioration thereof - In a display mode, a signal driving circuit (DAC) transmits image signals to the pixels selected by a scanning circuit for display and first switches of switch units. Then, a power supply circuit supplies a current corresponding to the transmitted signal to the pixels. Then, organic EL elements provided in the pixels are driven to emit light, thereby displaying an image. In order to correct the deterioration of the organic EL elements, first, a constant current flows from a current source to the organic EL elements of the pixels selected by a scanning circuit for detection and second switches and a voltage corresponding to the constant current applied to the organic EL element is detected. The detected voltage is input to an AD converter through a buffer amplifier, and the AD converter converts the voltage into a digital value, and transmits the digital value to a signal correction control unit. When the organic EL element deteriorates, the detected digital value varies. Therefore, the signal correction control unit corrects the signal from the signal driving circuit, thereby correcting the deterioration of the organic EL element. | 01-29-2009 |
| 20090027374 | Display device - To implement brightness change of pixels due to variations in environmental temperatures with low electric power, the display device includes a display part having a display area arrayed with plural pixels, a display scanning circuit and a signal driving circuit for driving the plural pixels, and a power circuit that supplies a current for illuminating each of the plural pixels with brightness corresponding to a display signal from the signal driving circuit; and a detection unit that includes: a monitor element for driving a constant current that detects environmental temperatures; and plural constant current sources, detects a voltage value relating to the luminous intensity of the pixels by the monitor element to generate a signal to control an output voltage of the power circuit, and changes over a constant current source of the monitor element according to a voltage value detected in the detection unit. | 01-29-2009 |
| 20090066614 | DISPLAY DEVICE - A display device including independent power sources for a display use and a detection use, display elements, switches ( | 03-12-2009 |
| 20090073094 | IMAGE DISPLAY DEVICE - To detect reduction of luminous efficiency of respective light-emitting elements arranged in a matrix state while suppressing increase of costs. | 03-19-2009 |
| 20090073155 | Image Display Device - The present invention provides an image display device which can realize the stabilization of system electric power, and can suppress crosstalk attributed to voltage drop of power source line by preventing the irregularities in power consumption which occur with time. The image display device includes a plurality of pixels each of which includes a current-drive-type light emitting element, a plurality of signal lines which writes an image voltage in the respective pixels; and a write pixel selection means which selects the pixels in which the image voltage is written via the plurality of signal lines among the plurality of pixels with respect to every display line, and the image display device includes a power source line which supplies electricity to the light emitting elements in the respective pixels arranged on each display line, and a power source circuit which supplies a voltage having a ramp waveform whose voltage level is changed with time with respect to the power source line during a light emission period. The power source line is provided for every display line, and a phase of the voltage having the ramp waveform differs for every power source line. | 03-19-2009 |
| 20090109148 | Organic electro-luminescent display device - A high-definition organic EL display device which enhances utilization efficiency of a space within a pixel is provided. In an organic EL display device in which pixels each of which is constituted of an organic El element are arranged in a matrix array, the pixel includes a pixel circuit which is configured to control an electric current supplied to the organic El element, the pixel circuit includes a capacitance, and the capacitance is arranged on a boundary of the pixels arranged adjacent to each other in a longitudinal direction of the pixels. Further, one electrode which constitutes the capacitance is used in common by the pixels arranged adjacent to each other in the longitudinal direction, and another electrode which constitutes the capacitance is separated between the pixels arranged adjacent to each other in the longitudinal direction. | 04-30-2009 |
| 20090109149 | Image display device - An image display device having a plurality of pixel, a plurality of signal lines for inputting an image voltage to each of the plurality of pixels, and a pixel selecting unit for selecting from the plurality of pixels a pixel into which the image voltage is to be written, in which each of the pixels has a light emitting device of a current driving-type, a driving transistor connected between a power line and the light emitting device, and a capacitance device having one end connected to a gate electrode of the driving transistor, the image voltage is input to the other end of the capacitance device during the writing period, an inclined wave voltage which changes a voltage level thereof according to time is input to the other end of the capacitance device during a light emission period following the writing period. | 04-30-2009 |
| 20090141015 | Image display device - A shift in the frame of a moving image in an image display device using self-luminous elements is made hard to see. | 06-04-2009 |
| 20090141017 | Image display device and driving method for same - An image display with high brightness where a long time can be secured for light emission of self-luminous elements can be implemented using only line memories. | 06-04-2009 |
| 20090146928 | Organic Electroluminescence Display Device - Before a reset operation in which a threshold voltage Vth of an organic light emitting diode (OLED) driving thin film transistor (TFT) is compensated is performed by a first reset TFT switch, a second reset TFT switch is turned on to apply a reset reference potential to a gate of the OLED driving TFT. Accordingly, an operation point of the OLED driving TFT can be stably set even when a power supply is low. In the reset operation, it is unnecessary to close a lighting TFT switch and cause an OLED element to emit light, whereby constant can be improved. | 06-11-2009 |
| 20090179832 | Organic electroluminescence display device - An organic electroluminescence display device is provided having a display section including a plurality of pixels arranged in a matrix; and a detection section for detecting a luminance characteristic of an OLED element in each of the pixels. The detection section includes a first path for allowing a detected characteristic value to pass therethrough and a second path for attenuating the detected characteristic value. A first switch is provided for the first path whereas a second switch is provided for the second path, the second switch being opened when the first switch is closed. The detected characteristic value having passed through any one of the first path and the second path is input to a same analog-to-digital converter to be converted into a digital quantity. | 07-16-2009 |
| 20090201267 | Display device having touch panel - The present invention realizes the reduction of cost of a display device having a touch panel. The display device having a touch panel includes a display panel, and a touch panel which is arranged on the display panel in an overlapping manner in plane. The touch panel includes a first substrate and a second substrate which are arranged to face each other with spacers sandwiched therebetween, and a first semiconductor chip which is mounted on the first substrate. The first substrate includes, on a surface side thereof which faces the second substrate, a plurality of first lines which is arranged parallel to each other in the first direction, a first chip mounting region on which the first semiconductor chip is mounted, and a plurality of first connection portions each of which is constituted of a portion of each line in the plurality of first lines, the first semiconductor chip includes a plurality of first bump electrodes which is arranged in one direction, the plurality of first connection portions are arranged in the arrangement direction of the plurality of first bump electrodes within the first-chip mounting region, and an arrangement pitch of the plurality of first bump electrodes is set larger than an arrangement pitch of the plurality of first connection portions. | 08-13-2009 |
| 20090243973 | DISPLAY DEVICE - Provided is a display device including: a display section including a plurality of pixels which emit light in an amount varied depending on an amount of current; signal lines used to input a display signal voltage to the pixels; a switch circuit which switches between the signal lines to output signals corresponding to pixel states of the pixels, the pixel states being obtained through a supply of a power source to the pixels; and an A/D converter which sequentially detects the signals corresponding to the pixel states of the pixels along a horizontal line of the display section, in which the A/D converter includes a circuit for changing a reference voltage of the A/D converter, and is structured so as to perform block-by-block detection of signals corresponding to pixel states of pixels in each of a plurality of blocks into which the pixels in the horizontal line are divided. | 10-01-2009 |
| 20090244043 | Image Display Device - To provide an image display device having a circuit for solving burning phenomenon without increasing the size of the circuit. An image display device is provided having a display unit formed using display devices, a signal line for inputting a display signal voltage to the display unit, and a display control unit for controlling the display signal voltage, the image display device comprising a detection power source, a switch for causing a current of the detection power source to flow to the display device, a detection circuit for detecting the current, and a detection information storage circuit for storing information, and compensating the display signal voltage, using the information, wherein using a first reference voltage, and current detection is carried out, the detection circuit feeds back the current detected to set a second reference voltage different from the first reference voltage, and carries out current detection. | 10-01-2009 |
| 20090303162 | Image Display Device - Provided is an image display device in which deterioration of a self-light-emitting element within a pixel is corrected accurately. A driver transistor provided in each pixel to drive the self-light-emitting element is driven in a saturation region. A voltage detection unit detects a voltage across the self-light-emitting element of each pixel, which is observed when a constant current is supplied to the self-light-emitting element. When the voltage detected by the voltage detection unit exceeds a threshold voltage, one of a reference voltage and a power supply voltage is controlled to keep an operation region of the driver transistor to the saturation region in every one of a plurality of the pixels of the image display device. | 12-10-2009 |
| 20090303163 | Image Display Device - Provided is an image display device in which deterioration of a self-light-emitting element within a pixel is corrected accurately. A detection unit detects, within a detection period, a difference in characteristics between self-light-emitting elements of adjacent pixels. A first subtraction circuit outputs a differential voltage between a reference voltage and an image voltage to a self-light-emitting element that is determined by the detection unit as a deteriorated element. An amplifier amplifies an output of the first subtraction circuit with a gain [1/{1-(α/100)}] | 12-10-2009 |
| 20090309865 | Image Display Device - During a first period of a set period, a reset switch element of each pixel is turned on to converge a voltage at a control electrode of a TFT to a predetermined voltage, and a step signal having a first voltage level is supplied from a step signal generation circuit. During a second period of the set period, the reset switch element is turned off, and a step signal having a second voltage level is supplied from the step signal generation circuit, whereby a voltage exceeding a second power supply voltage or a voltage exceeding a voltage range supplied from a signal driver section is input as a characteristic value set voltage to the control electrode. Accordingly, even when a relationship between a gate voltage and a drain current of the thin film transistor exhibits a hysteresis characteristic, uniform display can be achieved. | 12-17-2009 |
| 20100033410 | DISPLAY DEVICE - An image display device comprises a unit which divides one line into a plurality of blocks (blocks A, B, and C) in a horizontal direction and detects in parallel, a unit which collectively detects a plurality of lines (lines A and B) in a vertical direction in parallel. The unit detects a pixel state of a pixel of the block (for example, block A) and a pixel state of the same pixel as an adjacent block (for example, block B), and corrects a variation between the detection result of the block and the detection result of the adjacent block. The unit detects a pixel state of a pixel through the line (for example, line A) and a pixel state of the same pixel through a different line (for example, line B), and corrects a variation between the detection result of the line and the detection result of the different line. | 02-11-2010 |
| 20100039454 | DISPLAY DEVICE - In an image display device, each pixel includes a drive transistor for driving a light emitting element, a capacitive element which is connected between a signal line and a control electrode of the drive transistor, and a reset switching element. The reset switching elements of all pixels are turned off within a light emission period, and a PWM signal is supplied to a signal line from a drive circuit. A cycle of the PWM signal in a low brightness display mode is shorter than a cycle of the PWM signal in a standard brightness display mode. Due to such a constitution, the constitution of a drive circuit can be simplified, and it is possible to control light emission brightnesses of respective pixels of red, green and blue over a wide range from high brightness to low brightness while taking a balance among the light emission brightnesses. | 02-18-2010 |
| 20100051958 | DISPLAY DEVICE AND MANUFACTURING METHOD THEREOF - A display device includes an insulation substrate on which TFT elements, first electrodes, light emitting layers and a second electrode are stacked in this order. Auxiliary lines are arranged between the insulation substrate and the second electrodes, and an insulation layer is interposed between the auxiliary lines and the second electrode. The auxiliary lines and the second electrode are connected with each other via contact holes formed in the insulation layer. Due to such a constitution, it is possible to enhance image quality of an organic EL display device. | 03-04-2010 |
| 20100053144 | IMAGE DISPLAY DEVICE - Provided is an image display device including: a plurality of pixel scanning lines; a plurality of signal lines; and a plurality of pixel circuits corresponding to intersections between the pixel scanning lines and the signal lines. Each of the pixel circuits includes: a driver transistor; a light emitting element for emitting light based on the current supplied from the driver transistor; a pixel switch for generating a potential based on an image signal and a scanning signal; a capacitor element for controlling the driver transistor based on a potential difference caused by the potential supplied from the pixel switch; and a reset switch for setting a potential at an end of the capacitor element to a predetermined state based on a scanning signal supplied from one of the pixel scanning lines preceding the scanning signal which corresponds to the corresponding one of the plurality of pixel circuits. | 03-04-2010 |
| 20100085349 | DISPLAY DEVICE - Provided is a display device capable of freely setting correction based on a state of a luminance gradient in a self-emission display device for eliminating the luminance gradient. The display device includes: a data line drive circuit for outputting emission control signals for controlling light emission of display elements during a retrace period during which display signal voltages are not output; and an emission power supply circuit for supplying power supply voltages for the light emission of the display elements to power supply lines from at least one of external sides of a display region corresponding to a group including the display elements. The data line drive circuit generates and outputs the emission control signals different among data lines. | 04-08-2010 |
| 20100141616 | Display Device And Driving Method Thereof - The present invention enhances a display quality of a display device as a task. As means for solving such a task, the present invention provides a display device including a light emitting element and a switching element in a pixel, wherein the switching element is provided for supplying a power source to the light emitting element and is constituted of a first switching element and a second switching element. The first switching element and the second switching element are configured to be operated, in response to inputting of data signals into the inside of the pixel, one switching element assumes a positive bias state and another switching element assumes a reverse bias state, and the bias states are alternately changed over between the first switching element and the second switching element in response to time-sequential inputting of the data signals, and the supply of the power source to the light emitting element is performed by way of either one of the first switching element and the second switching element. | 06-10-2010 |
| 20100156881 | IMAGE DISPLAY DEVICE - An image display device includes a plurality of pixels. Each of the plurality of pixels includes a self light-emitting element and a driving transistor configured to drive the self light-emitting element based on an inputted image voltage. The image display device also includes a current source configured to supply a constant current to the driving transistor and a detection section connected to a source electrode of a driving transistor of each of the plurality of pixels. The current source is connected to the source electrode of the driving transistor. The detection section detects a source voltage of the driving transistor to which the constant current is supplied during a detection period. | 06-24-2010 |
| 20100156966 | IMAGE DISPLAY DEVICE - An image display device includes a first drive mode and a second drive mode. When N indicates an integer equal to or larger than 2(N≧2), a first to N-th frames are N successive frames, and j indicates an integer equal to or larger than 1. During a write period for a k-th (1≦k≦N) frame in the first drive mode, a scanning circuit sequentially selects a (k+N(j−1))-th display line, and a drive circuit supplies analog video voltages for the (k+N (j−1))-th display line to a plurality of signal lines. During a write period for all frames in the second drive mode, the scanning circuit sequentially selects all display lines, and the drive circuit supplies the analog video voltages for all the display lines to the plurality of signal lines. | 06-24-2010 |
| 20100177086 | IMAGE DISPLAY DEVICE - An image display device for displaying an image by causing a light emitting element contained in each of a plurality of pixels that are arranged in a display area (SA) to emit light includes: power supply paths for supplying electric power to each of a plurality of partial areas, which are created by dividing the display area (SA), independently of other partial areas to make the light emitting element of each pixel that belongs to the partial area emit light; and a power control unit for controlling electric power to be supplied from each of the power supply paths to the associated partial area, and at least some of the partial areas have an area that overlaps with other adjacent partial areas. | 07-15-2010 |
| 20100188318 | DISPLAY DEVICE - A display device includes: a display section including a plurality of pixels which emit light in an amount varied depending on an amount of current; signal lines for inputting a display signal voltage to the plurality of pixels; a switch circuit for switching between the signal lines to output signals corresponding to pixel states of the plurality of pixels, the pixel states being obtained through a supply of a detection-use power source to the plurality of pixels; and an A/D conversion section which includes a circuit for changing a reference voltage, and which sequentially detects signals corresponding to pixel states of pixels in each of a plurality of blocks which are obtained by dividing pixels in a horizontal line of the display section. The deteriorated pixels, which is accompanied by an in-plane gradient and fluctuations of the display section, are compensated without increasing a scale of a detection circuit. | 07-29-2010 |
| 20100201675 | IMAGE DISPLAY DEVICE - Provided is an image display device, which includes: a display area including a plurality of pixels each of which includes a self light-emitting element; and a plurality of signal lines for inputting an image voltage to each of the plurality of pixels, in which: each of the plurality of pixels includes a field-effect transistor for driving the self light-emitting element based on the image voltage which is input through each of the plurality of signal lines to each of the plurality of pixels; the display area is divided into at least two regions including a first region and a second region; and a (channel width-to-channel length) ratio of the field-effect transistor in the first region is smaller than the ratio of any field-effect transistor in the second region. | 08-12-2010 |
| 20100328366 | DISPLAY DEVICE AND DISPLAY METHOD - A display device is provided which displays images by emitting light when a reference voltage is applied to pixels. An average picture level calculation unit of a reference voltage calculation unit in a rectangular wave driving unit of a TFT substrate calculates the value of average picture level, and a ΔV calculation unit of a reference voltage calculation unit calculates a correction amount ΔV of the reference voltage based on the average picture level value. The calculated correction amount ΔV is added to a reference voltage and is used as the voltage of a rectangular wave signal that is output to each pixel from a rectangular wave driving unit. In each pixel in which a data signal corresponding to the grayscale value is stored, an organic EL device emits light in accordance with the rectangular wave signal. | 12-30-2010 |
| 20110012817 | IMAGE DISPLAY DEVICE - An image display device includes: a first power supply line; a second power supply line; a plurality of pixel circuit; a driving circuit for supplying a data signal and a scanning signal; and a switch unit. Each pixel circuit includes: a driving transistor between the first power supply line and the second power supply line; a light emitting element controlled by the driving transistor; and a storage capacitor for storing the data signal and controlling the driving transistor. The driving circuit causes the storage capacitor to store the data signal and controls an intensity of light emission based on the data signal. The switch unit is provided at one of one end of the first power supply line and one end of the second power supply line to control whether or not to allow a current to flow from the first power supply line to the second power supply line. | 01-20-2011 |
| 20110018787 | DISPLAY DEVICE - Provided is a display device including: a display region in which a plurality of pixels each including a light emitting element are arranged; a power supply unit provided outside the display region; a plurality of power supply lines connected to the power supply unit, for supplying power to the elements; and a light emission control unit ( | 01-27-2011 |
| 20110032282 | DISPLAY DEVICE AND DRIVING METHOD THEREOF - A display device is capable of improving display quality. A data line drive circuit outputs a display signal voltage to data lines in a first period. Each pixel holds the display signal voltage with reference to a voltage determined based on characteristics of the drive transistor. In a second period, a control voltage for controlling the drive transistor is output to the data lines. The drive transistor generates a drive current in accordance with the control voltage and the held signal voltage so as to allow the self-luminous element to emit light. After the second period, a third period is provided in which a voltage signal for setting a control terminal of the drive transistor to have a given correction voltage is output to the data lines. The first period follows the third period. | 02-10-2011 |
| 20110043544 | IMAGE DISPLAY DEVICE - Provided is an image display device, in which light emission period control signals are applied to a plurality of pixels holding voltages based on grayscale values, to emit from light emitting elements. During a horizontal synchronizing period, an active period of each of the light emission period control signals is divided into two periods. A start of one of the divisional periods coincides with a start of the horizontal synchronizing signal. An end of the other divisional period coincides with an end of the horizontal synchronizing signal. The active periods of the light emission period control signals (G) and (B) are equal to or larger than 80% of the active period of the light emission period control signal (R). An active period of a light emission control signal is synchronized with the light emission period control signal (R). | 02-24-2011 |
| 20110050747 | DISPLAY DEVICE - A display device capable of correcting display of deteriorated pixels without causing a nonconstant tonality or improper color balance is provided. The display device includes a display section with plural pixels; signal lines; a data generation circuit; a D/A converter for sequentially converting a tone data to an analog voltage and outputting the analog voltage to the signal lines; a switch circuit for outputting a signal corresponding to the pixel state by switching the signal lines; an A/D converter for sequentially detecting the signal; and a detection circuit for estimating the state of the pixel from the signal. The D/A converter includes an output range setting means for setting an allowed output range of the analog voltage. The display device includes an output correction circuit that controls the output range setting means in accordance with the state of the pixel detected by the detection circuit. | 03-03-2011 |
