Abstract: A display device capable of suppressing decrease in capacitance and capable of reducing area even when a capacitor unit is repaired is provided. A capacitor unit in a display device includes: a capacitor element having a first capacitor electrode connected to a power line and provided in an SD electrode layer and a second capacitor electrode provided in a GM electrode layer; a backup capacitor electrode provided in the TM electrode layer; a disconnect-able portion at which a connection between the first capacitor electrode and the power line can be disconnected; and a connectable portion at which the backup capacitor electrode and the power line can be connected, and the disconnect-able portion and the connectable portion overlap in a stacking direction.

Abstract: The display device includes stacked layers including a display element layer and a control layer including a capacitor including an upper electrode layer and a lower electrode layer that face each other in a layer-stacking direction, wherein the upper electrode layer includes a first upper capacitor electrode connecting two circuit elements, a disconnectable portion, and a second upper capacitor electrode connected to the first upper electrode layer through the disconnectable portion, and the lower electrode layer includes a first lower capacitor electrode connecting two circuit elements, a disconnectable portion, and a second lower capacitor electrode connected to the first lower electrode layer through the disconnectable portion. The capacitor has a capacitance each between the first upper capacitor electrode and the second lower capacitor electrode, and the first lower capacitor electrode and the second upper capacitor electrode.

Abstract: A display device includes an organic EL element and a capacitor. A driving transistor is connected to an anode of the organic EL element and passes a current to the organic EL element. The current corresponds to a voltage held in the capacitor. A first switch is between the capacitor and a data line, and the data line supplies the voltage to the capacitor. A voltage detector is connected to the data line for detecting an anode voltage applied to the organic EL element. A second switch is between the anode and the data line. A controller turns on the first switch, causes the organic EL element to emit light, and causes the voltage detector to detect the anode voltage by turning off the first switch and turning on the second switch while the organic EL element is emitting light.

Abstract: A capacitor unit in a display device includes: a capacitor element having a first capacitor electrode connected to a power line and provided in a GM electrode layer and a second capacitor electrode connected to a line and provided in an SD electrode layer; a backup capacitor element having a first backup capacitor electrode provided in the GM electrode layer and a second backup capacitor electrode connected to the power line and provided in the SD electrode layer; a disconnect-able portion at which a connection between the second capacitor electrode and the line can be disconnected; and a connectable portion at which the first backup capacitor electrode and the line can be connected, and the disconnect-able portion and the connectable portion are arranged at a position in which the disconnect-able portion and the connectable portion overlap in a stacking direction.

Abstract: A display device includes an organic EL element and a capacitor. A driving transistor is connected to an anode of the organic EL element and passes a current to the organic EL element. The current corresponds to a voltage held in the capacitor. A first switch is between the capacitor and a data line, and the data line supplies the voltage to the capacitor. A voltage detector is connected to the data line for detecting an anode voltage applied to the organic EL element. A second switch is between the anode and the data line. A controller turns on the first switch, causes the organic EL element to emit light, and causes the voltage detector to detect the anode voltage by turning off the first switch and turning on the second switch while the organic EL element is emitting light.

Abstract: An inspection method for an active-matrix substrate including the scanning lines, the data lines, the pixels disposed in matrix, and the power lines. The pixel includes: an organic EL device; a drive transistor; a capacitor; a selection transistor having a gate connected to the scanning line and connected between the data line and the gate of the drive transistor, and the guard potential transistor having a gate connected to a source of the selection transistor, a source connected to a drain of the selection transistor, and a drain connected to the power line. The inspection method includes: a writing process for writing a charge in the capacitor; a reading process for reading the written charged from the capacitor; and a holding process for holding the charge for a predetermined period from the end of the writing process to the start of the reading process.

Abstract: A display device including: scanning lines; data lines; pixels provided in a matrix; and a power line, each of the pixels includes: an organic EL device; a drive transistor which converts a data voltage applied to a gate into a drive current; a capacitor which holds a voltage according to the data voltage; a selector transistor having a gate connected to one of the scanning lines and a source connected to the gate of the drive transistor; a selector transistor having a gate connected to the scanning line, a source connected to a drain of the selector transistor, and a drain connected to the data line; and a guard potential transistor having a gate connected to the source of the selector transistor, a source connected to the drain of the selector transistor, and a drain connected to the power line.

Abstract: An active-matrix substrate includes: a substrate; gate lines disposed on the substrate; source lines disposed on the substrate in a direction that crosses the gate lines; a first terminal provided for each of data line blocks obtained by grouping every m-lines (m being an integer greater than or equal to 2) of the source lines into a block; a first selection circuit provided for each of the data line blocks, for causing conduction between the first terminal and at least one source line selected from among the m source lines; a second terminal provided for every n-blocks (n being an integer greater than or equal to 2) of the data line blocks; and a second selection terminal provided for every n-blocks of the data line blocks, for causing conduction between the second terminal and at least one source line selected from among the m×n source lines.

Abstract: A display device capable of suppressing decrease in capacitance and capable of reducing area even when a capacitor unit is repaired is provided. A capacitor unit in a display device includes: a capacitor element having a first capacitor electrode connected to a power line and provided in an SD electrode layer and a second capacitor electrode provided in a GM electrode layer; a backup capacitor electrode provided in the TM electrode layer; a disconnect-able portion at which a connection between the first capacitor electrode and the power line can be disconnected; and a connectable portion at which the backup capacitor electrode and the power line can be connected, and the disconnect-able portion and the connectable portion overlap in a stacking direction.

Abstract: A capacitor unit in a display device includes: a capacitor element having a first capacitor electrode connected to a power line and provided in a GM electrode layer and a second capacitor electrode connected to a line and provided in an SD electrode layer; a backup capacitor element having a first backup capacitor electrode provided in the GM electrode layer and a second backup capacitor electrode connected to the power line and provided in the SD electrode layer; a disconnect-able portion at which a connection between the second capacitor electrode and the line can be disconnected; and a connectable portion at which the first backup capacitor electrode and the line can be connected, and the disconnect-able portion and the connectable portion are arranged at a position in which the disconnect-able portion and the connectable portion overlap in a stacking direction.

Abstract: An inspection method for an active-matrix substrate including the scanning lines, the data lines, the pixels disposed in matrix, and the power lines. The pixel includes: an organic EL device; a drive transistor; a capacitor; a selection transistor having a gate connected to the scanning line and connected between the data line and the gate of the drive transistor, and the guard potential transistor having a gate connected to a source of the selection transistor, a source connected to a drain of the selection transistor, and a drain connected to the power line. The inspection method includes: a writing process for writing a charge in the capacitor; a reading process for reading the written charged from the capacitor; and a holding process for holding the charge for a predetermined period from the end of the writing process to the start of the reading process.

Abstract: A display device including: scanning lines; data lines; pixels provided in a matrix; and a power line, each of the pixels includes: an organic EL device; a drive transistor which converts a data voltage applied to a gate into a drive current; a capacitor which holds a voltage according to the data voltage; a selector transistor having a gate connected to one of the scanning lines and a source connected to the gate of the drive transistor; a selector transistor having a gate connected to the scanning line, a source connected to a drain of the selector transistor, and a drain connected to the data line; and a guard potential transistor having a gate connected to the source of the selector transistor, a source connected to the drain of the selector transistor, and a drain connected to the power line.

Abstract: An active matrix substrate including: gate lines; source lines arranged in a direction orthogonal to each of the gate lines; a gate short-circuit line to short-circuit the gate lines; a source short-circuit line to short-circuit the source lines; gate line thin film transistors each having a drain electrode being connected to the corresponding one of the gate lines, and a source electrode being connected to the gate short-circuit line; and source line thin film transistors each having a drain electrode being connected to the corresponding one of the source lines, and a source electrode being connected to the source short-circuit line, in which the gate line thin film transistors and the source line thin film transistors are of depletion-mode, and the gate electrode of each of the source line thin film transistors is connected to the gate short-circuit line.

Abstract: The display device includes stacked layers including a display element layer and a control layer including a capacitor including an upper electrode layer and a lower electrode layer that face each other in a layer-stacking direction, wherein the upper electrode layer includes a first upper capacitor electrode connecting two circuit elements, a disconnectable portion, and a second upper capacitor electrode connected to the first upper electrode layer through the disconnectable portion, and the lower electrode layer includes a first lower capacitor electrode connecting two circuit elements, a disconnectable portion, and a second lower capacitor electrode connected to the first lower electrode layer through the disconnectable portion. The capacitor has a capacitance each between the first upper capacitor electrode and the second lower capacitor electrode, and the first lower capacitor electrode and the second upper capacitor electrode.

Abstract: A display device is provided which includes a luminescence element, a data line, and a switch connected between an electrode of the luminescence element and the data line. A voltage generation circuit supplies a pre-charge voltage to the data line. A current generation circuit supplies an inspection current to the electrode of the luminescence element plural times through the data line and the switch. A voltage detection circuit detects, the plural times, voltage values of the electrode supplied with the inspection current. When a difference between the voltage values is at least a predetermined value, the voltage generation circuit supplies the data line with an updated voltage that is higher than the pre-charge voltage.

Abstract: An image display device includes a luminescent panel in which luminescent pixels are two-dimensionally arranged. Each luminescent pixel has a stacked luminescent layer and driving layer. The driving layer includes a capacitive element that includes two electrode layers stacked in parallel. A memory stores coordinate information of a repaired luminescent pixel in which the capacitive element is repaired through disconnection of a part of one of the two electrode layers. A controller converts video signals received by the image display device into luminescent pixel signals that determine luminescence of the luminescent pixels. The controller outputs the luminescent pixel signals to a driver in a scanning order.

Abstract: The present invention provides an organic light emitting display device in which light emitted by an OLED whose luminance is adjusted for detection of deterioration does not stand out as compared to light emitted by other OLEDs, thereby not producing an unpleasant sensation for users. A calculation unit in a display control unit 104 sets, for a target pixel 302, a driving signal Out(C)=V. For a peripheral pixel 301 horizontally located immediately before the target pixel 302, the calculation unit calculates a driving signal Out(C?1)=In(C?1)?V(In(C))/2. For a peripheral pixel 303 horizontally located immediately after the target pixel 302, the calculation unit calculates a driving signal Out(C+1)=In(C+1)?V(In(C))/2.

Abstract: A display device is provided which includes a luminescence element, a data line, and a switch connected between an electrode of the luminescence element and the data line. A voltage generation circuit supplies a pre-charge voltage to the data line. A current generation circuit supplies an inspection current to the electrode of the luminescence element plural times through the data line and the switch. A voltage detection circuit detects, the plural times, voltage values of the electrode supplied with the inspection current. When a difference between the voltage values is at least a predetermined value, the voltage generation circuit supplies the data line with an updated voltage that is higher than the pre-charge voltage.

Abstract: A display device includes an organic EL element and a capacitor. A driving transistor is connected to an anode of the organic EL element and passes a current to the organic EL element. The current corresponds to a voltage held in the capacitor. A first switch is between the capacitor and a data line, and the data line supplies the voltage to the capacitor. A voltage detector is connected to the data line for detecting an anode voltage applied to the organic EL element. A second switch is between the anode and the data line. A controller turns on the first switch, causes the organic EL element to emit light, and causes the voltage detector to detect the anode voltage by turning off the first switch and turning on the second switch while the organic EL element is emitting light.

Abstract: To provide an exposure device and an image forming apparatus using the same, in which the exposure device can detect light intensity with improved reliability and thereby controls the light intensity with high precision, the exposure device includes an EL (electro-luminescence) element having a first electrode (an anode), a second electrode (a cathode), and a light emitting layer disposed between the first and second electrodes, thereby forming a light emitting unit, and a light detecting element detecting light emitted from the EL element, in which the EL element and the light detecting element are stacked onto each other. The light detecting element is provided at an inner side of a principal surface of the electrode (the anode) which is disposed closer to the light detecting element than the other electrode. A light emitting area of the EL element is provided at an inner side of a principal surface of the light detecting element.