The present disclosure relates to a data processing device, a data driving device, and a system for driving a display device, and more particularly, to a data processing device, a data driving device, and a system capable of reducing power consumption of the display device.

A method of driving a display panel includes dividing an input image into a plurality of segments, generating a flicker value of a segment of the plurality of segments, determining whether to compensate the flicker value of the segment or not according to a segment size, compensating the flicker value of the segment based on the segment size, determining a frame rate of the display panel based on the flicker value of the segment and outputting a data voltage to the display panel in the frame rate. The flicker value of the segment is compensated based on the flicker value of the segment and flicker values of segments that are adjacent to the segment.

An overdrive system includes a compressor that compresses an input signal to result in a compressed signal; a weighting device that generates a weighted sum of a current compressed signal and a current input signal, thereby resulting in a weighted current signal; and an overdriver that performs an overdrive operation according to a previous compressed signal and the weighted current signal.

A voltage control circuit provides a common voltage to a common electrode of a liquid crystal panel. The liquid crystal panel includes pixel units, each of which is coupled to the common electrode. The circuit includes an operational amplifier in a negative feedback configuration. The operational amplifier includes: an input stage, a gain stage and an output stage including a second NMOS transistor and a second PMOS transistor. A gate of the second NMOS transistor receives a first control signal, and a drain and a source of the second NMOS transistor are respectively coupled to a gate of a first PMOS transistor and a second reference voltage. A gate of the second PMOS transistor receives a second control signal, and a drain and a source of the second PMOS transistor is respectively coupled to a gate of a first NMOS transistor and a third reference voltage.

A display device includes display device includes: a display panel including a plurality of pixels; a data driver configured to generate data voltages based on output image data, and to provide the data voltages to the plurality of pixels; and a controller configured to receive input image data and input frequency information from a host processor, and to provide the output image data to the data driver, wherein the controller includes an adaptive refresh block configured to: determine a target frequency by analyzing the input image data; determine a masking ratio based on an input frequency represented by the input frequency information and the target frequency; and selectively output the input image data as the output image data by performing a masking operation on the input image data with the masking ratio.

A display device includes a display panel, a display driver integrated circuit and a driving control circuit. The display panel includes a plurality of pixels connected to a plurality of driving lines and a plurality of source lines. The display driver integrated circuit includes a driving control signal generator. The driving control signal generator generates a driving control signal based on display device information and pixel values corresponding to at least a portion of the plurality of rows among a plurality of previous pixel values of a previous frame and a plurality of present pixel values of a present frame. The driving control circuit selectively connects the display driver integrated circuit with each of the plurality of driving lines based on the driving control signal such that first driving signals provided to first driving lines among the plurality of driving lines are blocked.

An OLED display device includes display panel and a panel driver. The panel driver receives input image data at an input frame frequency and determines whether the input image data represent a still image. When the input image data do not represent the still image, the panel driver drives the display panel at a first output frame frequency substantially equal to the input frame frequency. When the input image data represent the still image, the panel driver drives the display panel at a second output frame frequency lower than the input frame frequency for a low frequency driving time and drives the display panel at a third output frame frequency higher than the second output frame frequency for a high frequency insertion time determined by one of a panel characteristic of the display panel and a representative gray level of the input image data, after the low frequency driving time.

A computing device performs a first operation before a first commit deadline, resulting in a first frame being rendered and displayed in a first cycle. A second operation is performed, before a second commit deadline, resulting in a second frame being rendered and displayed in a second cycle. A time remaining to a third commit deadline is determined, using the current time. A third operation is predicted, performable before a third commit deadline. An additional operation is predicted, performable for a future cycle. A total processing time for the third and additional operations is determined, being less than the remaining time. The third and additional operations are performed for use in a future cycle. The result of the third operation is used to render a third frame for the third cycle. The result of the additional operation is used to render an additional frame before a future render deadline.

Disclosed is an electronic device including a display panel displaying an image, a source driver supplying a source voltage to the display panel, and a display driver integrated circuit (DDI) including a timing controller controlling the source driver. The timing controller may be configured to identify information associated with a luminance of the image and to set a source bias current for controlling a slew rate of the source voltage based on the luminance of the image. Besides, various embodiments as understood from the specification are also possible.

A display device includes a display panel including a plurality of pixels, and a panel driver including N registers, where N is an integer greater than 1. The panel driver is configured to divide the display panel into N first detection regions, to perform a first still image detection operation on each of the N first detection regions by using the N registers, to divide the display panel into N second detection regions different from the N first detection regions by using a result of the first still image detection operation, and to perform a second still image detection operation on each of the N second detection regions by using the N registers.