A display apparatus includes a display panel in which a plurality of pixels and a plurality of data lines and a plurality of sensing lines connected to the pixels are arranged, a first driving circuit connected to data lines and sensing lines arranged in a first pixel column and a second pixel column adjacent to the first pixel column, and a second driving circuit connected to data lines and sensing lines arranged in a third pixel column adjacent to the second pixel column and a fourth pixel column adjacent to the third pixel column.

A panel repairing method includes detecting a defective portion of a panel, providing primary ink, which is ejected from an ink ejection pin, onto a first portion of the defective portion, spreading the primary ink in a direction parallel to a plane defined on the panel, temporarily curing the primary ink, providing secondary ink, which is ejected from the ink ejection pin, onto a second portion of the defective portion disposed adjacent to the first portion, and curing the primary ink and the secondary ink.

A display substrate includes a base substrate including a display region and a peripheral region located on at least one side of the display region. The display region is provided with a plurality of sub-pixels, and at least one of the plurality of sub-pixels includes a light-emitting element and a pixel circuit for driving the light-emitting element. The peripheral region includes a detection region, and the detection region is provided with at least one detection electrode which is electrically connected with a first electrode of the light-emitting element and the pixel circuit through a detection lead wire, to detect electrical performance of the light-emitting element through the detection electrode in a detection stage.

A display screen aging compensation method, system, and device, the method including obtaining display data of each display area of a display screen having at least one display area, the display data including usage time t of the display area, a maximum gray level value Lev_max that is of each primary color and that is obtained before the display data, and an average gray level value Lev of each primary color of three primary colors within the usage time t, where the usage time is accumulated screen-on time that is of the display area and that is obtained after the display screen is powered on, obtaining a decay ratio of each primary color of the display area based on the display data, and performing aging compensation on each display area based on the decay ratio of each primary color of each display area.

A pixel includes a light emitting element, a first transistor including a gate electrode electrically connected to a first node, a second transistor including a gate electrode connected to a first scan line, a third transistor including a gate electrode connected to the first scan line, a fourth transistor including a gate electrode connected to a second scan line, a fifth transistor including a gate electrode electrically connected to a third scan line, an sixth transistor including a gate electrode electrically connected to the third scan line, a resistor electrically connected in parallel with the sixth transistor between the second node and the anode of the light emitting element, and an amplifier having a non-inverting terminal and an inverting terminal electrically connected to ends of the resistor, respectively.

The present disclosure provides a pixel driving circuit, a driving method thereof, and a display device. In the pixel driving circuit, a first terminal of a first storage sub-circuit is connected to a control terminal; a power control sub-circuit is connected to a light-emitting control signal line, a first power line and a first terminal of the driving sub-circuit; a compensation sub-circuit is connected to a first gate line, a control terminal and a first terminal of the driving sub-circuit; a data writing-in sub-circuit is connected to a second terminal of the first storage sub-circuit; a first reset sub-circuit is connected to a reset signal line, a first power line and the control terminal of the driving sub-circuit; a first control sub-circuit is connected to the first gate line, an initialization signal line and the second terminal of the driving sub-circuit.

A pixel circuit includes: a driving sub-circuit including a driving transistor and a storage capacitor; a first reset sub-circuit configured to transmit an initialization signal to a third node under control of at least a first reset signal; a writing sub-circuit configured to transmit the initialization signal to a first node under control of a first scanning signal, and write a data signal received at a data terminal to the first node and perform threshold voltage compensation on the driving transistor under control of the first scanning signal and a second scanning signal; a light-emitting device; and a light-emitting control sub-circuit configured to, under control of a first enable signal and a second enable signal, transmit a voltage signal of a first voltage terminal to a second node, and transmit a current output by the driving transistor to the light-emitting device.

Provided are a display substrate and a display apparatus. The display substrate includes a first display region and a second display region, and a pixel density of the first display region is higher than a pixel density of the second display region. A first pixel circuit of a first sub-pixel in the first display region includes one pixel circuit unit, and a second pixel circuit of a second sub-pixel in the second display region includes two pixel circuit units. The first pixel circuit is configured to be connected with a first power voltage terminal to receive a first power voltage as a pixel power voltage, and the second pixel circuit is configured to be connected with a second power voltage terminal to receive a second power voltage as a pixel power voltage and the first power voltage is different from the second power voltage.

A display device is provided that includes a display panel and a backlight panel. The backlight panel includes a plurality of self-calibrating illumination modules configured to provide backlighting for the display panel. Each self-calibrating illumination module includes at least one light source configured to emit light toward the display panel, at least one light sensor configured to detect light emitted from the at least one light source that is internally reflected within the display device, and a controller configured to control a current supplied to the at least one light source based at least on an intensity of light detected by the at least one light sensor.

A pixel driving circuit includes a signal control sub-circuit and a time control sub-circuit. The signal control sub-circuit includes a first driving sub-circuit connected to a first node. The signal control sub-circuit is configured to: write at least a first data signal into the first node, and enable the first driving sub-circuit to output a driving signal according to the first data signal and a first power supply voltage signal. The time control sub-circuit includes a second driving sub-circuit including a first transistor connected to a second node and the signal control sub-circuit. The time control sub-circuit is configured to: transmit a second power supply voltage signal and a third power supply voltage signal to the second node in different periods, so as to control a turn-on time of the first transistor and transmit the driving signal to an element to be driven when the first transistor is turned on.