An electronic device may include a display panel to display an image and a display pipeline to process image data for the image. The display pipeline may include a controller to determine a first potential presentation time based on a maximum refresh rate of the display panel. The controller may also determine if a second target presentation time of a second image is equal to the first potential presentation time before a pipeline configuration time, and if the second target presentation time of the second image is equal to a second potential presentation time that occurs after the first potential presentation time and before a first pre-notification time occurring before the pipeline configuration time. The controller may output a first pre-notification signal at the first pre-notification time that instructs the display panel to pause self-refreshes until after the second image is displayed.

A display includes: a frame-rate conversion section being configured to be capable of changing a frame-rate conversion ratio having a value of 1 or more, the frame-rate conversion section converting a frame rate of an image signal at the frame-rate conversion ratio being set; and a display section displaying an image having undergone frame rate conversion.

The disclosure describes procedures for dynamically employing a variable refresh rate at an LCD display of a consumer electronic device, such as a laptop computer, a tablet computer, a mobile phone, or a music player device. In some configurations, the consumer electronic device can include a host system portion, having one or more processors and a display system portion, having a timing controller, a buffer circuit, a display driver, and a display panel. The display system can receive image data and image control data from a GPU of the host system, evaluate the received image control data to determine a reduced refresh rate (RRR) for employing at the display panel, and then transition to the RRR, whenever practicable, to conserve power. In some scenarios, the transition to the RRR can be a transition from a LRR of 50 hertz or above to a RRR of 40 hertz or below.

An electronic device may include a display panel to display an image and a display pipeline to process image data for the image. The display pipeline may include a controller to determine a first potential presentation time based on a maximum refresh rate of the display panel. The controller may also determine if a second target presentation time of a second image is equal to the first potential presentation time before a pipeline configuration time, and if the second target presentation time of the second image is equal to a second potential presentation time that occurs after the first potential presentation time and before a first pre-notification time occurring before the pipeline configuration time. The controller may output a first pre-notification signal at the first pre-notification time that instructs the display panel to pause self-refreshes until after the second image is displayed.

Provided is a display control device that can, even with a self-emitting display, minimize power consumption and dramatically increase the battery life time of information device. The display control device includes: a phase adjustment circuit that adjusts a phase difference between input image data including a vertical blanking period and memory image data read from a frame buffer, by adjusting the number of vertical blanking lines on the basis of a difference between the number of vertical lines related to the input image data and the number of vertical lines related to phase adjusted image data in which the number of vertical blanking lines related to the memory image data is adjusted, and generating the phase adjusted image data; a selector that outputs the phase adjusted image data to the display as output image data in the period lasting until image display under PSR terminates; and a vertical line number calculation circuit that outputs a vertical line number signal related to the number of vertical lines related to output image data to the display until when a head of a frame of the output image data is output.

A liquid crystal display device comprises a display panel; a source driver configured to provide source outputs to the display panel; a memory configured to store polarities of the source outputs with respect to a panel self-refresh operation and a normal refresh operation that is not the panel self-refresh operation as a first inversion pattern and to store the polarities of source outputs with respect to a low refresh rate operation as a second inversion pattern; and an LRR controller configured to control the polarities of the source outputs with the first inversion pattern in panel self-refresh frames before the low refresh rate operation is performed, to control the polarities of the source outputs with a third inversion pattern referring to the first inversion pattern in low refresh rate frames in which the low refresh rate operation is performed, and to control the polarities of the source outputs with a fourth inversion pattern referring to the second inversion pattern in normal refresh frames after the low refresh rate operation ends.

A black frame insertion (BFI) processing method and device and a display device thereof. The BFI processing method includes: determining whether a piezoelectric signal detected in response to a touch operation is greater than a pressure threshold; generating a trigger signal when determining that the piezoelectric signal is greater than the pressure threshold; and controlling a display panel to perform BFI display based on the trigger signal and a logic determination signal.

The present disclosure provides a self-refresh display driving device, a driving method and a display device. The self-refresh display driving device includes a timing control module and a driving module, wherein the driving module includes a frame buffer. The timing control module enters a sleep mode when the self refresh display driving device enters the self-refresh mode.

The present disclosure discloses a method for changing a landscape signal of a liquid crystal screen to a portrait mode. The method comprises: adjusting the setting of a built-in driving TCON (time controller) IC (chipset) of the LCD so as to change the input signal interface of the LCD from an MIPI (mobile industry processor interface) to a TTL (transistor-transistor level) data/timing interface+SPI (serial peripheral interface) command control interface; controlling the initialization, turning-on and turning-off of the driving TCON IC via the SPI interface, and realizing the switching among four projection modes, desktop front projection, desktop rear projection, ceiling front projection, and ceiling rear projection, by adjusting the up, down, left and right display directions of a screen output image; receiving, in real time, the landscape image outputted by a front-end video processing chip through the TTL data interface, and then displaying same in real time.

An organic light-emitting display device includes: a display panel including: a plurality of pixels configured to display an image, each pixel among the plurality of pixels including a driving transistor and a sensing transistor, a plurality of data lines respectively connected to each driving transistor, and a plurality of sensing signal lines respectively connected to each sensing transistor, a plurality of source drive integrated circuits (ICs) configured to: supply data voltages to the plurality of data lines, and supply sensing voltages to the plurality of sensing signal lines, and a timing controller configured to supply digital video data and a data timing control signal to the source driver ICs, wherein each of the plurality of source driver ICs includes a sensing voltage supply unit configured to generate the sensing voltages.