A display device includes: a pixel unit having a plurality of pixels; a timing controller supplying respective scan start signals to a plurality of scan drivers and an emission start signal to an emission driver, in response to synchronization signals supplied from the outside; the emission driver supplying an emission signal to emission control lines connected to the pixels based on the emission start signal; the scan drivers supplying scan signals to the scan lines connected to the pixels based on the scan start signal; and a data driver supplying a data signal to data lines connected to the pixels, and at least one of a frequency of the emission start signal and frequencies of the scan start signals may be a first frequency that is determined independently of a driving frequency when the driving frequency is less than or equal to a threshold value.

A display device includes: a pixel unit having a plurality of pixels; a timing controller supplying respective scan start signals to a plurality of scan drivers and an emission start signal to an emission driver, in response to synchronization signals supplied from the outside; the emission driver supplying an emission signal to emission control lines connected to the pixels based on the emission start signal; the scan drivers supplying scan signals to the scan lines connected to the pixels based on the scan start signal; and a data driver supplying a data signal to data lines connected to the pixels, and at least one of a frequency of the emission start signal and frequencies of the scan start signals may be a first frequency that is determined independently of a driving frequency when the driving frequency is less than or equal to a threshold value.

Provided is a pixel driving circuit configured to provide a signal to a to-be-driven element. The pixel driving circuit includes: a current control sub-circuit, configured to transmit a current signal; a time length control sub-circuit, configured to transmit a time signal; and an output sub-circuit, electrically connected with the time length control sub-circuit and the current control sub-circuit, respectively; where the time length control sub-circuit is further configured to control the output sub-circuit to be turned on or off based on the time signal; the output sub-circuit is configured to, when turned on, control a current applied to the to-be-driven element based on the current signal, where duration of two adjacent turn-ons of the output sub-circuit is same and duration of two adjacent turn-offs of the output sub-circuit is same.

Provided is a pixel driving circuit configured to provide a signal to a to-be-driven element. The pixel driving circuit includes: a current control sub-circuit, configured to transmit a current signal; a time length control sub-circuit, configured to transmit a time signal; and an output sub-circuit, electrically connected with the time length control sub-circuit and the current control sub-circuit, respectively; where the time length control sub-circuit is further configured to control the output sub-circuit to be turned on or off based on the time signal; the output sub-circuit is configured to, when turned on, control a current applied to the to-be-driven element based on the current signal, where duration of two adjacent turn-ons of the output sub-circuit is same and duration of two adjacent turn-offs of the output sub-circuit is same.

A four-way dual scanning electronic display board capable of scan control, whereby, in order to provide drive control, an LED module arrangement method, and processing for each LED pixel dot (R, G, B), which are for easily enabling a high definition image, pixel display dots of an LED module are controlled by processing image display dots of the module by means of a four-way method by an automatic image switching device through the display control of SCU image switching, in order to display a high definition image through the four-way control of each image dot (R, G, B) pixel, and thus high resolution image quality may be enabled and displayed.

A four-way dual scanning electronic display board capable of scan control, whereby, in order to provide drive control, an LED module arrangement method, and processing for each LED pixel dot (R, G, B), which are for easily enabling a high definition image, pixel display dots of an LED module are controlled by processing image display dots of the module by means of a four-way method by an automatic image switching device through the display control of SCU image switching, in order to display a high definition image through the four-way control of each image dot (R, G, B) pixel, and thus high resolution image quality may be enabled and displayed.

A display panel includes a pixel circuit and a light-emitting element. The pixel circuit includes a driving module, and the driving module includes a driving transistor. A time period of one frame of the display panel includes a non-light-emitting stage and a light-emitting stage, and the non-light-emitting stage includes a bias adjustment stage, in which one of a source and a drain of the driving transistor receives a bias adjustment signal. An operating state of the pixel circuit includes a first mode and a second mode, a time length of the non-light-emitting stage in the first mode is L1, and a time length of the non-light-emitting stage in the second mode is L2, where L1>L2. A working process of the display panel in the first mode includes a first frame, and a working process of the display panel in the second mode includes a second frame.

A display substrate and a display apparatus are provided. The display substrate includes a base substrate; sub-pixels arranged in an array and on the base substrate; data line groups on the base substrate; each data line group includes data lines, each of which is connected to one column of sub-pixels; data selectors on the base substrate and connected to the data line groups in a one-to-one correspondence; data lines in a same data line group are connected to a same data selector; and a data selection signal lines, wherein different data selection signal lines output different data selection signals; and different data lines connected to a same data selector correspond to different data selection signal lines, respectively. The display panel provided may effectively reduce the resistance on the data selection signal lines, thereby reducing the delay of the data selection signals and further improving the charging uniformity of sub-pixels.

A display substrate and a display apparatus are provided. The display substrate includes a base substrate; sub-pixels arranged in an array and on the base substrate; data line groups on the base substrate; each data line group includes data lines, each of which is connected to one column of sub-pixels; data selectors on the base substrate and connected to the data line groups in a one-to-one correspondence; data lines in a same data line group are connected to a same data selector; and a data selection signal lines, wherein different data selection signal lines output different data selection signals; and different data lines connected to a same data selector correspond to different data selection signal lines, respectively. The display panel provided may effectively reduce the resistance on the data selection signal lines, thereby reducing the delay of the data selection signals and further improving the charging uniformity of sub-pixels.

In a display panel, pixels each including a plurality of sub-pixels are arranged in a matrix form, wherein each of the plurality of sub-pixels includes: an inorganic light-emitting element; a constant current generator circuit that provides a driving current to the inorganic light-emitting element on the basis of a constant current generator data voltage; and a PWM circuit for controlling the time for the driving current to flow through the inorganic light-emitting element on the basis of a PWM data voltage, wherein the constant current generator circuit includes a first driving transistor and the PWM circuit includes a second driving transistor, and wherein the constant current generator circuit or the PWM circuit comprises an internal compensation circuit that compensates for electrical characteristics of the first driving transistor and the second driving transistor.