A display panel and a driving method thereof, and a display device are disclosed. The display panel includes a plurality of sub-pixel unit groups arranged in an array, the array includes a plurality of rows and a plurality of columns, each of the sub-pixel unit groups includes N sub-pixel units disposed along a column direction and a pixel driving circuit each of the N sub-pixel units includes a light-emitting circuit the pixel driving circuit is electrically connected to the light-emitting circuits of the N sub-pixel units, and the pixel driving circuit is configured to provide light-emitting driving currents to the light-emitting circuits of the N sub-pixel units.

An electro-optical device includes a plurality of digital scanning lines, a digital signal line, and a plurality of pixel circuits. Each of the pixel circuits includes a light emitting element and a digital driving circuit. The digital driving circuit performs digital driving to turn the light emitting element ON-state or OFF-state based on a grayscale value. The digital driving circuit keeps the light emitting element ON-state by supplying a drive current to the light emitting element, in a period in which an enable signal is active, of a grayscale display period having a length corresponding to the grayscale value. The control line driving circuit sets a period in which the enable signal is active. A ratio, with respect to the grayscale display period, of an ON-state period in which the light emitting element is ON-state changes in accordance with the period in which the enable signal is active.

The present invention provides a method of driving a display device, comprising the steps of: step S1, providing a display device, comprising a plurality of sub-pixels arranged in an array; step S2: dividing data signals of the sub-pixels in a frame of an image into a plurality of sub-frames having different time weights; step S3, dividing the plurality of sub-pixels into at least two driving groups, and the plurality of sub-frames corresponding to the sub-pixels in different driving groups having different display order; and step S4, driving each of the sub-pixels to display image according to a display order of one of the sub-frames corresponding to each of the sub-pixels, such that through setting different display order of sub-frames of the sub-pixels of different driving groups, the flicker caused by the digital driving can be reduced without increasing driving frequency.

A passive matrix LED display driving scheme based on subframe pulse width modulation (PWM) to increase frame scan rate and further with channel-to-channel compensation is provided. The scheme may comprise: dividing each frame of the display video into T number of subframes; converting a driving signal for a pixel into a N-bit driving data, compensating the driving data with a compensation value; mapping the compensated driving data into the T number of subframes respectively.

A data conversion method, a display method, a data conversion device and a display device. The data conversion method includes: performing data reorganization on original pixel data corresponding to at least one row of pixels in a display panel to obtain reorganized pixel data. In any data channel, the performing data reorganization on original pixel data corresponding to at least one row of pixels in a display panel to obtain reorganized pixel data includes: a first reorganized part in the n-th reorganized pixel data set consists of a first original part in the (n-1)-th original pixel data set, and a second reorganized part in the n-th reorganized pixel data set consists of a second original part in the n-th original pixel data set, wherein n is an integer satisfying 1<n≤N, and N is an integer greater than 1.

The present invention provides a method of driving a display device, comprising the steps of: step S1, providing a display device, comprising a plurality of sub-pixels arranged in an array; step S2: dividing data signals of the sub-pixels in a frame of an image into a plurality of sub-frames having different time weights; step S3, dividing the plurality of sub-pixels into at least two driving groups, and the plurality of sub-frames corresponding to the sub-pixels in different driving groups having different display order; and step S4, driving each of the sub-pixels to display image according to a display order of one of the sub-frames corresponding to each of the sub-pixels, such that through setting different display order of sub-frames of the sub-pixels of different driving groups, the flicker caused by the digital driving can be reduced without increasing driving frequency.

A passive matrix LED display driving scheme based on subframe pulse width modulation (PWM) to increase frame scan rate and further with channel-to-channel compensation is provided. The scheme may comprise: dividing each frame of the display video into T number of subframes; converting a driving signal for a pixel into a N-bit driving data, compensating the driving data with a compensation value; mapping the compensated driving data into the T number of subframes respectively.

A display device includes a display area including a plurality of pixels, and a gradation control circuit configured to control a gradation of the pixel based on a gradation control mode. Each of the plurality of pixels includes first and second LED chips. One frame period of the gradation control mode includes a first to third subframe periods. In the first subframe period, the gradation of the pixel is controlled by a light emitting area of each of the first and second LED chips. In the second subframe period, the gradation of the pixel is controlled by a light emission time of each of the first and second LED chips. In the third subframe period, the gradation of the pixel is controlled by a current value supplied to each of the first and second LED chips.

An electro-optical device includes a plurality of digital scanning lines, a digital signal line, and a plurality of pixel circuits. Each of the pixel circuits includes a light emitting element and a digital driving circuit. The digital driving circuit performs digital driving to turn the light emitting element ON-state or OFF-state based on a grayscale value. The digital driving circuit keeps the light emitting element ON-state by supplying a drive current to the light emitting element, in a period in which an enable signal is active, of a grayscale display period having a length corresponding to the grayscale value. The control line driving circuit sets a period in which the enable signal is active. A ratio, with respect to the grayscale display period, of an ON-state period in which the light emitting element is ON-state changes in accordance with the period in which the enable signal is active.

A pulse-density-modulation display and image capture system comprises a display comprising a plurality of pixels. Each pixel comprises a light emitter that controllably emits light at a constant current for a variable amount of time and a control circuit connected to the light emitter to control the light emitter to emit light in response to an input signal specifying the desired luminance of the light emitter. The control circuit converts the input signal to a non-contiguous pulse-density-modulation signal and controls the light emitter to emit light in response to the non-contiguous pulse-density-modulation signal with a temporally variable constant-current control signal. Each pixel emits light responsive to a display timing signal. The pulse-density-modulation display and image capture system also comprises a sampling camera that records the pixels and is responsive to a camera timing signal different from the display timing signal.