A display system may include a memory external to a pixel that stores a first digital data value, a memory internal to the pixel that stores a second digital data signal, where a combination of the first digital data signal and the second digital data signal may indicate a target gray level assigned to the pixel for a particular image frame. The pixel may be driven for a first duration of time according to the first digital data signal and for a second duration of time according to the second digital data signal.

The present embodiments disclose a display device. A display device according to an embodiment of the present disclosure comprises a pixel unit including a plurality of pixels, each including a luminous element and a pixel circuit connected to the luminous element, a clock generator configured to generate a plurality of clock signals each corresponding to each of a plurality of subframes constituting a frame, and a parallel to serial converter configured to convert the plurality of clock signals to a serial clock signal and transfer the serial clock signal to the pixel unit, and wherein the pixel circuit of each pixel includes a first pixel circuit configured to control light-emission and non-emission of the luminous element in response to a control signal applied to each of the plurality of subframes and a second pixel circuit configured to store bit values of image data in the frame and generate the control signal based on the stored bit values and the serial clock signal such that each subframe included in the frame is controlled according to each bit value.

The present disclosure discloses a pixel drive circuit and a display panel. The pixel drive circuit includes a Micro-LED, a cathode of which is grounded; a light-emitting control circuit connected with an anode of the Micro-LED and configured to control an emission time of the Micro-LED; a current control circuit connected with the light-emitting control circuit and configured to output a preset current to the light-emitting control circuit to control the Micro-LED to work under a set current density, and luminance efficiency of the Micro-LED under the set current density is greater than a set threshold value.

A driver system controls a plurality of light emitting diodes (LEDs). The driver system includes a first driver to provide an LED current to each of the plurality of LEDs. The first driver includes a current mirror for the LED current provided to the plurality of LEDs. The driver system also includes a second driver to modulate the LED current provided to the plurality of LEDs.

A display panel including a plurality of pixels is provided. The display panel includes: a plurality of light emitting elements configured to constitute each pixel of the plurality of pixels; and a plurality of pixel circuits respectively corresponding to the plurality of light emitting elements and configured to drive the plurality of light emitting elements, wherein the plurality of pixel circuits includes a first pixel circuit for pulse width modulation (PWM)-driving a first light emitting element among the plurality of light emitting elements and a second pixel circuit for pulse amplitude modulation (PAM)-driving a second light emitting element among the plurality of light emitting elements.

A driving method of LED display, configured to be applied to an LED display capable of varying a refresh rate thereof and able to reduce brightness changes due to refresh rate variation, is disclosed in the present disclosure. This driving method includes: controlling an organic light-emitting diode of the LED display by an emission signal having a plurality of frame periods, with each of the frame periods having a PWM part with a duty ratio; detecting whether a change in the refresh rate of the LED display exists; and performing a compensation procedure when the change is detected, with the compensation procedure compensating a brightness difference of the organic light-emitting diode occurring due to the change in the refresh rate by adjusting the duty ratio of the PWM part. Said LED display is also disclosed.

A display apparatus is provided to include a pixel array composed of a plurality of pixels. Each pixel includes a pulse-generating unit producing a first pulse and a second pulse with opposite phases; a first switching unit; a light-emitting unit; and a second switching unit. The first switching unit, the light-emitting unit, and the second switching unit are connected in series, the first switching unit is controlled by the first pulse, and the second switching unit is controlled by the second pulse, and the first switching unit and the second switching unit are configured to be turned on or turned off synchronously.

A display system includes a display panel that includes a plurality of micro-light-emitting diodes (microLEDs), the display panel being divided into a plurality of display blocks; and a plurality of drivers correspondingly driving the plurality of display blocks. Data signals of each driver are provided to a corresponding display block at different times within a horizontal scan period.

Display device including: an array of pixels comprising several pixel blocks; a video card comprising an input configured to receive a digital signal to be displayed by the array of pixels, and an output coupled to the blocks via at least one main data bus;

and wherein: the array of pixels comprises control circuits each associated with one of the blocks, coupled to the main data bus and including a main memory circuit; the video card includes a compression circuit configured to compress, before sending them to the output, the digital data to be displayed by the blocks; each control circuit includes a decompression circuit for decompressing the part of the digital data received by the control circuit before storing them in the main memory circuit.

An electronic device is provided. The electronic device includes a driver, a driving circuit and an electronic element. The driver converts a first PWM data to a second PWM data according to a gamma setting curve, and converts a first PAM data to a second PAM data according to the gamma setting curve. The driving circuit includes a PWM circuit and a PAM circuit. The PWM circuit receives the second PWM data. The PAM circuit receives the second PAM data. The electronic element emits a light according to a driving current provided from the driving circuit.