A display device includes a first active layer disposed on a substrate and including a source area, a resistance area, and a drain area spaced apart from the source area by the resistance area, a first gate electrode and a second gate electrode disposed on the first active layer and overlapping the first active layer, and a first power voltage electrode disposed on the first gate electrode and the second gate electrode and overlapping the resistance area in a cross-sectional view. In this case, the resistance area of the active layer and the first power voltage electrode may form a floating node capacitor. Accordingly, in a case that the first gate electrode and the second gate electrode form a dual gate transistor with the active layer, an instantaneous voltage increase may be suppressed and current leakage may be prevented.

Provided are a display panel and a display device. The display panel includes a pixel driver circuit. The pixel driver circuit includes a light-emitting module, a drive transistor and at least one light-emitting control transistor. The drive transistor, the light-emitting control transistor and the light-emitting module are connected in series between a first power supply signal terminal and a second power supply signal terminal, and at least one of the drive transistor or the light-emitting control transistor is a first double-gate transistor. The first double-gate transistor includes a first gate, a second gate and a first source, and the second gate is electrically connected to the first source.

A display device includes a display layer including a plurality of light-emitting devices and a plurality of switching devices in a one-to-one correspondence with the light-emitting devices, the plurality of light-emitting devices and the plurality of switching devices forming a monolithic structure, and a driving layer, wherein the plurality of light-emitting devices and the plurality of switching devices corresponding to the plurality of light-emitting devices are grouped into pixels and then arranged in the display layer, and the driving layer includes a plurality of driving devices configured to apply at least one driving signal to the display layer.

The present disclosure provides a pixel circuit, a method for driving the same, a display substrate, and a display device, which belong to the field of display technologies. The pixel circuit includes a compensating circuit which can adjust an electric potential of a second control node (a gate of a transistor controlling conduction or non-conduction between a first connection node and a second connection node) based on an electric potential of a first control node, and adjust an electric potential of the second control node based on an electric potential of the second connection node. When the pixel circuit is driven, electric potential of each control signal can be controlled, such that influence of a threshold voltage of a transistor on an electric potential finally output to the second control node is relatively small, that is, influence of drifting of a threshold voltage on display uniformity is reduced. The display device according to the present disclosure achieves a good display effect.

Disclosed are a display panel in which a unit pixel is divided into a wide-angle area and a narrow-angle area in which at least sub-pixel is disposed and light emission is individually and selectively performed, a display device including the same, and a manufacturing method thereof. A semi-cylindrical lens is disposed in the wide-angle area so as to cover a plurality of sub-pixels. Semi-spherical lenses are disposed in the narrow-angle area so as to cover sub-pixels respectively. Therefore, a direction of light emitting from a light-emitting layer is controlled by adjusting a refractive index of each of the lenses in the wide-angle area and the narrow-angle area. Thus, a viewing angle is controlled.

A display apparatus capable of improving image quality is provided. In the display apparatus, an adder circuit is provided inside and outside a display region, and the adder circuit has a function of adding a plurality of pieces of data supplied from a source driver. Some components of the adder circuit are separately arranged in a pixel region. Thus, limitation on the size of a component included in the adder circuit can be eased, and data addition can be performed efficiently. In addition, by providing the other components included in the adder circuit outside the display region, the number of wirings in the display region can be reduced and the aperture ratio of the pixel can be increased.

A display apparatus includes: a plurality of first display elements at a first display area; a plurality of first pixel circuits at the first display area, and electrically connected to the plurality of first display elements, respectively; a plurality of second display elements at a second display area; a plurality of second pixel circuits located along a first direction at a non-display area, and electrically connected to the plurality of second display elements, respectively; and a data line electrically connected to at least one first pixel circuit from among the plurality of first pixel circuits that is located along a second direction crossing the first direction at the first display area, and to at least one second pixel circuit from among the plurality of second pixel circuits. The plurality of second pixel circuits are spaced from the plurality of second display elements in a plan view.

The present disclosure provides a display apparatus, a pixel circuit and a method of driving a pixel circuit. In one or more embodiments, the pixel circuit includes a driving transistor, a data signal module and a bias signal module. A first electrode of the driving transistor is connected with a first power signal terminal, a second electrode of the driving transistor is connected with a first terminal of a light emitting element, and the driving transistor includes a first control electrode and a second control electrode. The data signal module is connected with the driving transistor, a data writing signal terminal and a data signal terminal. The bias signal module is connected with the driving transistor, a bias writing signal terminal and a bias signal terminal, and is configured to adjust a threshold voltage of the driving transistor under control of the bias writing signal terminal and the bias signal terminal.

A display device includes a pixel having a first transistor connected between first and second nodes to generate a driving current; an emission driver that supplies an emission control signal including an off-duty corresponding to first and second gate-off periods to an emission control line during a frame period; a scan driver that supplies first to fourth scan signals to the first to fourth scan lines in a first non-emission period, respectively, and that supplies the first scan signal to the first scan line in a second non-emission period; a data driver that supplies a data signal to the data line; and a controller adjusting the off-duty of the emission control signal that is a width of each of the first and second non-emission periods in response to a dimming signal, and that controls a timing at which the first scan signal is supplied in the second non-emission period.

A display apparatus capable of improving image quality is provided. In the display apparatus, an adder circuit is provided inside and outside a display region, and the adder circuit has a function of adding a plurality of pieces of data supplied from a source driver. Some components of the adder circuit are separately arranged in a pixel region. Thus, limitation on the size of a component included in the adder circuit can be eased, and data addition can be performed efficiently. In addition, by providing the other components included in the adder circuit outside the display region, the number of wirings in the display region can be reduced and the aperture ratio of the pixel can be increased.