To provide a pixel circuit capable of suppressing a decrease in luminance due to leakage of a transistor without increasing the number of elements or with a minimum increase in the number of elements even if the number is increased. A pixel circuit is provided including a light-emitting element, a drive transistor configured to supply a current to the light-emitting element, a first reset transistor configured to set a potential of an anode of the light-emitting element to a predetermined potential, a first write transistor configured to control writing of a signal voltage at a gate node of the drive transistor, a holding capacitance having one end connected to the gate node of the drive transistor and configured to hold a threshold voltage of the drive transistor, and a second write transistor connected in series between the gate node of the drive transistor and the first write transistor.

A pixel circuit and driving method thereof, a display device are provided, and the pixel circuit includes a switching sub-circuit, a threshold voltage extraction sub-circuit, an initialization sub-circuit, a feedback compensation sub-circuit, a driving transistor and a light emitting device. The threshold voltage extraction sub-circuit is coupled to a control electrode of the driving transistor, and configured to extract and store a threshold voltage of the driving transistor in response to an enable signal and configured to apply the threshold voltage and a data voltage written by the switching sub-circuit to the control electrode of the driving transistor. The feedback compensation sub-circuit is coupled to a second terminal of the light emitting device and a data line, and configured to generate a data voltage compensation signal for a next display image frame according to an operating current of the light emitting device and supply it to the data line. (FIG. 1).

A pixel circuit, includes: a driving signal generating sub-circuit configured to generate and output an initial driving signal; a voltage boost sub-circuit electrically connected to the driving signal generating sub-circuit, and configured to receive the initial driving signal, amplify the initial driving signal to generate a target driving signal, and output the target driving signal; and a light-emitting sub-circuit electrically connected to the voltage boost sub-circuit, and configured to receive the target driving signal and be driven by the target driving signal to emit light.

A display device according to an embodiment of the present disclosure includes a light-emitting element configured to emit light, a driving transistor configured to provide a high-level voltage to the light-emitting element, and a switching transistor configured to transfer a voltage input through a data line to a gate node of the driving transistor. The driving transistor operates in a saturation mode in which a voltage of a source node is saturated in response to a first data voltage input to the gate node, and operates in a switch mode in which the driving transistor operates as a switch in response to a second data voltage higher than the first data voltage, so that a driving current generated in the driving transistor is able to be sensed through the source node.

A display system includes an LED array and a driving device. The driving device includes a current driver, a scan selector and a capacitor. The current driver is connected to drive lines of the LED array, and provides a plurality of driving current signals respectively to the drive lines. The scan selector is connected to scan lines of the LED array, and has a first terminal that is configured to receive an input voltage, and a second terminal. The scan selector outputs the input voltage to a selected one of the scan lines, and outputs a clamp voltage provided at the second terminal thereof to the other ones of the scan lines. The capacitor has a first terminal, and a second terminal that is connected to the second terminal of the scan selector.

The present application provides a pixel driving circuit, a display apparatus and a method for driving a pixel driving circuit. The pixel driving circuit includes a driving sub-circuit, a duration control sub-circuit and a data writing sub-circuit. The driving sub-circuit is electrically coupled to the duration control sub-circuit and the data writing sub-circuit, respectively, the data writing sub-circuit is configured to transmit a data signal to the driving sub-circuit, the duration control sub-circuit is configured to control a turned-on duration of the driving sub-circuit, and the driving sub-circuit is configured to control a current of a to-be-driven element according to the data signal during the turned-on duration. The display apparatus includes the pixel driving circuit provided by the present application. The method is applied to the pixel driving circuit provided by the present application.

A driving circuit and a display device. The driving circuit uses a binding point voltage generation circuit to output first voltages, second voltages and a plurality of first voltage-divided binding point voltages. The two second voltages are voltage divided by a first voltage dividing circuit to generate a plurality of second voltage-divided binding point voltages. Each first data driving circuit outputs first amplified binding point voltages. Each second data driving circuit outputs second amplified binding point voltages. The first voltages, the second voltages, each first amplified binding point voltage, and each second amplified binding point voltage are inputted to each first data driving circuit and each second data driving circuit.

Embodiments of the present disclosure disclose a drive circuit, a driving method thereof and a display device. The drive circuit includes: a current control circuit, configured to provide a drive signal to a device to be driven according to a signal of a data signal terminal; a first transistor, electrically connected between the current control circuit and the device to be driven; and a duration control circuit, electrically connected with a gate of the first transistor, and configured to provide a light-emitting duration modulating signal to the gate of the first transistor according to a combined action of signals of a scanning signal terminal, a light-emitting control signal terminal, a duration control signal terminal and a reference voltage signal terminal, to control a conduction duration of the first transistor.

A display system includes an LED array and a driving device. The driving device includes a current driver, a scan selector and a capacitor. The current driver is connected to drive lines of the LED array, and provides a plurality of driving current signals respectively to the drive lines. The scan selector is connected to scan lines of the LED array, and has a first terminal that is configured to receive an input voltage, and a second terminal. The scan selector outputs the input voltage to a selected one of the scan lines, and outputs a clamp voltage provided at the second terminal thereof to the other ones of the scan lines. The capacitor has a first terminal, and a second terminal that is connected to the second terminal of the scan selector.

A lighting device is disclosed that includes a plurality of light emitting diodes arranged in an array, a plurality of trenches disposed between and optically isolating the light emitting diodes, and a patterned converter layer disposed over an array surface formed by light emitting surfaces of the light emitting diodes and upper surfaces of the trenches, the patterned converter layers including a first region having a first converter and a second region having a second converter different from the first converter, the first region and second region disposed over different areas of the array surface.