A display device includes a substrate which includes an active area including a plurality of sub pixels and a non-active area, and is formed of one of transparent conductive oxide or an oxide semiconductor layer, an insulating layer on the substrate, a plurality of thin film transistors which is on the insulating layer and includes an active layer having a channel region, a gate electrode, a source electrode, and a drain electrode and a plurality of light emitting diodes disposed in the plurality of sub pixels on the insulating layer, wherein the substrate includes a plurality of holes which overlap with at least a part of the active layer.

A display apparatus includes a display panel, a compensator, a controller, and a data driver. The compensator determines a degradation grayscale of a compensation region of the display panel. The degradation grayscale may be determined based on a driving time of at least one pixel in the compensation region and degradation data corresponding to the at least one pixel. The controller generates compensated image data for input image data based on the degradation grayscale. The data driver provides a data voltage to the at least one pixel based on the compensated image data.

A display device includes a pixel unit that includes a plurality of pixels, a compensator configured to receive sensing data from the pixel unit in a sensing period and that detects and compensates for a characteristic of the pixels, and a timing controller configured to convert an image signal received from an outside into image data.

A method for driving an active matrix organic light-emitting diode (AMOLED) display. The method may be used to digitally drive the AMOLED display in a way that limits the susceptibility of the AMOLED display to certain problems arising out of digital driving techniques, such as image sticking or low display lifetimes. The method involves generating compensation factors corresponding to each pixel of the display and using those compensation factors to control the illumination of the display. The aspects of the method that incorporate the operation point for generating a compensation factor may also be applied to analog driving of AMOLED displays.

A display apparatus includes: a substrate; a driving voltage line on the substrate and extending in a first direction; a first conductive layer on a same layer as the driving voltage line and spaced apart from the driving voltage line; a first insulating layer covering the driving voltage line and the first conductive layer; a driving transistor on the first insulating layer and comprising a driving gate electrode and a driving semiconductor layer overlapping the first conductive layer; and a connection member electrically connecting the driving voltage line and the driving semiconductor layer to each other, wherein an edge of the driving semiconductor layer is in contact with or inside an edge of the first conductive layer in a plan view.

A display device includes a pixel and a sensing channel connected to the pixel through a sensing line. The pixel includes: a first transistor including a gate electrode connected to a first node, a first electrode connected to a first power line, and a second electrode connected to a second node; a second transistor including a gate electrode connected to a first scan line, a first electrode connected to a data line, and a second electrode connected to the first node; a third transistor including a gate electrode connected to a second scan line, a first electrode connected to the second node, and a second electrode connected to a third node; and a fourth transistor including a first electrode connected to the first power line and a second electrode connected to the third node. The sensing line is connected to the third node.

A pixel unit includes a pixel circuit, a light-emitting element, a first sensing line and a second sensing line. The pixel circuit is electrically connected to the light-emitting element, and the pixel circuit includes a driving sub-circuit. The driving sub-circuit has a control terminal, a first terminal and a second terminal. The first terminal of the driving sub-circuit is configured to be electrically connected to a first power supply terminal, and is electrically connected to the first sensing line. The second terminal of the driving sub-circuit is electrically connected to the light-emitting element. The control terminal of the driving sub-circuit is electrically connected to the second sensing line. The first sensing line is configured to sense a voltage of the first terminal of the driving sub-circuit. The second sensing line is configured to sense a voltage of the control terminal of the driving sub-circuit.

An embodiment relates to a pixel sensing technique. By supplying a precharge voltage to a sensing line using an amplifier used in pixel sensing, it is possible to minimize differences between precharge voltages of sensing lines and solve a crosstalk problem between the sensing lines, while not increasing a size of a pixel sensing device.

A display substrate and a display device are provided. The display substrate includes sub-pixels which are arranged in a sub-pixel array in a first direction and a second direction. At least one sub-pixel includes a first transistor, a second transistor, a third transistor, and a storage capacitor. An active layer of the third transistor includes a body region and a first via hole region successively arranged in the first direction and electrically connected with each other; a first electrode of the third transistor is electrically connected to the first via hole region through a first via hole which is shifted in the second direction with respect to the body region, allowing the active layer incudes a first active layer side connecting the body region and the first via hole region; an extension direction of the first active layer side intersects with both the first direction and the second direction.

A pixel circuit is provided. The pixel circuit includes a light emitting unit, a drive unit, a switch unit connected to a first control terminal of the drive unit, a voltage maintenance unit, a potential reset unit connected to a second control terminal of the drive unit, and a potential maintenance unit.