502 results about "Refresh rate" patented technology

In a current drive type display device of a variable refresh rate system such as an organic EL display device, an on-bias voltage line for supplying an on-bias voltage Vobs to be applied to a driving transistor in a pixel circuit is provided in a display portion in order to reduce an influence of a hysteresis characteristic of the driving transistor on display luminance. Therefore, when an operation mode is switched from the low refresh mode to the high refresh mode, among pixel circuits in the same column connected to the same data signal line, a pixel circuit to which data is written and a pixel circuit to which the on-bias voltage is applied can be mixed. This enables quick switching from the low refresh rate to the high refresh rate.

The invention discloses a partition refresh circuit and a refresh control method thereof, a display panel and display equipment, and relates to the technical field of display, the circuit comprises a plurality of cascaded gate driving modules, each gate driving module comprises a gate scanning unit and a refresh selection unit, a direct-current potential signal accessed to a direct-current voltage end by the grid scanning unit under the driving of a previous-stage scanning signal is transmitted to the refresh selection unit, the refresh selection unit is triggered to access a data memory signal provided by a data signal end, and a refresh starting signal acting on a refresh starting end is determined according to the data memory signal; and triggering the gate scanning unit to output a dynamic refreshing signal line by line from the initial pixel line so as to perform partition refreshing operation on all the pixel lines of the dynamic refreshing partition, and stopping the partition refreshing operation according to a reset signal of a reset end until the gate scanning unit scans to the final pixel line of the dynamic refreshing partition. Independent refresh rate control of different areas of the screen is realized to reduce the display power consumption of the screen.

The invention belongs to the technical field of display driving, and particularly relates to a control circuit, an image compensation control device and a display panel, and the control circuit comprises a picture monitoring unit which outputs a voltage signal corresponding to a current refresh rate when determining that a current display picture is an abnormal picture according to a plurality of display parameters; a delay control unit configured to compare the voltage signal with a turn-on threshold and a turn-off threshold respectively, and output a switch control signal based on a comparison result; the switch unit is configured to switch on or switch off a signal path between the image compensation output end and the post-stage driving circuit in response to the switch control signal; therefore, through cooperative work of the picture monitoring unit, the delay control unit and the switch unit, a stable buffer area is set for starting and stopping of the ICA function, and the problems of frequent switching of the ICA function and picture flickering caused by fluctuation of parameters such as the refresh rate near a critical value are solved.

The invention belongs to the technical field of display driving, and particularly relates to a control circuit, an image compensation control device and a display panel, and the control circuit comprises a picture detection module which is configured to detect a current display picture when the current display picture is determined to be an abnormal picture according to a plurality of display parameters. The refresh rate in the multiple display parameters is converted into a corresponding input voltage signal; the return difference comparison module is configured to compare the input voltage signal with an upper limit threshold value and a lower limit threshold value respectively based on return difference characteristics so as to output a corresponding switch control signal; the execution module is configured to switch on or switch off a signal path between the image compensation output end and a post-stage driving circuit in response to the switch control signal; therefore, through cooperative work of the picture detection module, the return difference comparison module and the execution module, a stable buffer area is set for starting and stopping of the ICA function, and the problems of frequent switching of the ICA function and picture flickering caused by fluctuation of parameters such as the refresh rate near a critical value are solved.

The embodiment of the invention discloses a backlight control method and device and display equipment. The method comprises the following steps: acquiring a frame period of an image frame; dividing the frame period into a preset total number of synchronization periods; distributing the preset total number of synchronization periods into a first preset number of black insertion periods and a second preset number of display periods, wherein the sum of the first preset number and the second preset number is equal to the preset total number; and controlling the backlight source according to the distribution, turning off the backlight source in the black insertion period, and turning on the backlight source in the display period. By means of the mode, under the application of the variable refresh rate, the proportion of the black insertion period to the display period can be kept constant, so that the consistency of the display average brightness is kept, the screen flicker problem caused by the change of the refresh rate is avoided, and the display effect is improved.

The invention belongs to the field of LED display control, particularly relates to a software-definable LED driving chip gray scale display control method, and aims to solve the problems that the refresh rate of each gray scale cannot be flexibly adjusted, the nonlinear response of an LED driving chip and a lamp bead cannot be compensated, first scanning darkness cannot be solved and ghosting cannot be effectively eliminated in the prior art. The method comprises the following steps: determining the number of refresh cycles of one frame of display time and the number of gray scales displayed in each refresh cycle; calculating the initial gray scale weight of each gray scale bit, and adjusting the gray scale weight; scanning the transformation moment line by line according to each refresh cycle, and adjusting the position of the gray scale OE position in the subfield; and when to-be-displayed data is received, controlling the LED driving chip to complete gray scale display of the LED display screen. According to the method and the device, the refresh rate of each gray scale is flexibly adjusted, the nonlinear response is compensated, and the first scanning darkness and the ghosting are effectively eliminated.

The embodiment of the invention provides a gate drive circuit and a display panel, the gate drive circuit comprises a plurality of cascaded gate drive sub-circuits, each gate drive sub-circuit correspondingly controls a row of sub-pixels, and each gate drive sub-circuit comprises a pull-up module, a pull-down module and an output control module. The pull-up module controls the potential of a first node according to a first level transmission signal and a clock signal; the pull-down module controls the potential of the first node according to a preset low potential and a second level transmission signal; the output control module outputs a corresponding driving signal to the corresponding sub-pixel through the output port according to the control signal, a preset low potential and the potential of the first node, and the output control module comprises a first transistor, a second transistor, a third transistor and a fourth transistor. Through the setting, the problems of high power consumption and poor cruising ability of the intelligent equipment with the high-refresh-rate display panel are at least solved.

This application discloses a display control method, apparatus, electronic device, and storage medium, belonging to the field of electronic technology. The method includes: when an electronic device generates a first interface image for a first application, determining a display time interval between the first interface image and a second interface image based on the frame rate corresponding to the first interface image, wherein the second interface image is an interface image in the interface image sequence of the first application that is displayed before the first interface image and adjacent to the first interface image; determining a screen refresh delay based on the display time interval and the screen refresh rate; determining a target screen refresh time based on the screen refresh delay; and controlling the screen refresh at the target screen refresh time to display the first interface image.

Rendering an image on an active area of an OLED includes rendering the image on the active area of the display panel at a plurality of different frame rates. For a plurality of the different frame rates that match or are higher than a threshold frame rate, a frame refresh operation is performed once per frame period and no self-refresh operation is performed during the frame period. When rendering the image on the active area, for at least one of the different frame rates that is lower than the threshold frame rate, a frame refresh operation is performed once per frame period and at least one self-refresh operation is performed during the frame period.

This application provides a display device and a backlight module driving method. When the display device is in Variable Refresh Rate (VRR) mode, the dimming mode of the backlight module can be adjusted to analog dimming mode. In analog dimming mode, the backlight brightness of the backlight module can be adjusted by adjusting the power supply voltage / current of the backlight module to ensure the normal operation of the display module. Since the analog dimming mode does not have a refresh rate, there is no phase difference. Therefore, without increasing hardware costs, screen flicker or water ripple phenomena can be avoided, thereby ensuring the display quality of the screen and improving the user's viewing experience. In addition, it can also help improve the photoelectric conversion efficiency of the components in the display device.

The embodiment of the application discloses a video display method, a display device, a storage medium and a television. The video display method comprises the following steps: acquiring a target 3D signal, wherein the target 3D signal comprises a left eye frame and a right eye frame; controlling a 3D glasses to cyclically open a left eye lens and a right eye lens; when the left eye frame in the target 3D signal is displayed on a display screen, the 3D glasses is controlled to open the left eye lens; when the right eye frame in the target 3D signal is displayed on the display screen, the 3D glasses is controlled to open the right eye lens; and the opening frequency of the left eye lens and the opening frequency of the right eye lens are equal to half of the current refresh rate of the display screen. On the one hand, the television has a higher refresh rate, supports a larger size display, has a larger visual angle, and thus the 3D visual experience of a user can be improved; on the other hand, a user only needs to wear 3D glasses to better experience the 3D stereoscopic display effect through the television without spending a high cost to purchase a VR hardware device.

The present application relates to organic light emitting display data processing technical field, especially high resolution organic display driving waveform generation method, through distributed parameter analysis, pixel matrix is divided into spatial block, using GPU node parallel extraction parasitic parameter and construct cross block coupling model, generate block parasitic parameter mapping table and characteristic vector matrix;Based on the residual charge data and dynamic gray scale segment control generation contains curvature parameter segmented waveform parameter set;Call brightness and voltage response data to execute nonlinear brightness correction, combined with light intensity feedback loop to generate compensation pulse parameters;According to the display content feature classification switch multi mode driving strategy, through phase locked loop phase synchronization to eliminate time sequence fault, the present application effectively suppresses parasitic effect interference and brightness mutation overshoot, improves the gray scale compensation accuracy and refresh rate synergy, enhances the display uniformity and dynamic picture smooth.

The present application provides an always-on display method and a terminal. In the method, when a standard display mode is switched to a full-screen AOD mode, the terminal achieves a smooth transition by gradually reducing display brightness. Moreover, upon entering the full-screen AOD mode, a PWM dimming frequency and a screen refresh rate are also reduced to relatively low levels, thereby reducing power consumption. By implementing the technical solution provided by the present application, the visual abruptness caused by switching from the standard display mode to the full-screen AOD mode can be reduced, and the power consumption is also reduced in the full-screen AOD mode.

Methods, systems, and devices that support a dynamic screen refresh rate are described. An electronic device may dynamically (e.g., autonomously, while operating) adjust the rate at which a screen is refreshed, such as to balance considerations such as user experience and power consumption by the electronic device. For example, the electronic device may use an increased refresh rate when executing applications for which user experience is enhanced by a higher refresh rate and may use a decreased refresh rate when executing other applications. As another example, the electronic device may use different refresh rates while executing different portions of the same application, as some aspects of an application (e.g., more intense portions of a video game) may benefit more than others from a higher refresh rate. The electronic device may also account of rother factors, such as battery level, when setting or adjusting the refresh rate of the screen.

This electronic device may comprise a display driving circuit and a display panel. The display driving circuit can: transmit a light emission signal to the display panel according to a first number of light emissions so that the brightness of a screen displayed through the display panel is provided at a first brightness level; receive a command for changing from the first brightness level to a second brightness level lower than the first brightness level; transmit a light emission signal to the display panel according to a third number of light emissions between the first number of light emissions and the second number of light emissions greater than the first number of light emissions; and transmit a light emission signal to the display panel according to the second number of light emissions so that the brightness of the screen displayed through the display panel is provided at the second brightness level. A refresh rate can be maintained while the light emission signal is transmitted according to the third number of light emissions and the light emission signal is transmitted according to the second number of light emissions.

The invention provides a display control method and device, equipment and a storage medium, and the method comprises the steps: obtaining the layer interaction data of an application display layer in response to a display control request for the application display layer; determining a predicted refresh rate of the application display layer according to the layer interaction data and a display prediction model; and performing display control on the application display layer based on the predicted refresh rate and the terminal operation mode to obtain a display control result. According to the technical scheme, hardware does not need to be adjusted, and the display refresh rate of each application display layer is dynamically controlled according to the predicted refresh rate and the terminal operation mode, so that the display effect and performance of the terminal are improved, and the display power consumption of the terminal is remarkably reduced.

The application discloses a driving circuit of a display panel, a driving method and a driving device thereof. The driving circuit comprises a receiving processing module, a region division module and a driving data generation module. The receiving processing module is used for analyzing a received control instruction to obtain an analysis instruction, or determining a picture change condition relative to a previous frame according to obtained display image data. The region division module is electrically connected with the receiving processing module, and is used for dividing the display panel into at least two display regions according to the analysis instruction. In a partitioned multi-frequency display mode, the refresh rates of the at least two display regions are different. The driving data generation module is electrically connected with the receiving processing module and the region division module respectively, and is used for determining a target gamma setting corresponding to the display region according to the analysis instruction or the picture change condition, and generating driving data corresponding to the display region according to the target gamma setting. The embodiment of the application can reduce display power consumption loss of the display panel in the partitioned multi-frequency display mode.

The invention relates to the technical field of electronic display, in particular to an intelligent control method for the refresh rate of an electronic screen. According to the method, the refresh rate switching opportunity and amplitude are accurately controlled in advance by fusing double engines of real-time content analysis and foresight interaction prediction, so that the average refresh rate is reduced to the minimum on the premise of ensuring that any sudden interaction can obtain smooth response, and the unification of energy conservation and smoothness is achieved.

The application provides an array substrate, a display panel and an electronic device. Two switching devices in a same first demultiplexing unit are connected in parallel to provide a signal for a same first driving unit column, and input ends of two adjacent first demultiplexing units are connected in parallel, so that the two first demultiplexing units demultiplex signals transmitted by a same fan-out wire. Thus, compared with a scheme of arranging dummy demultiplexing units, the scheme provided by the embodiment can reduce the trench width of the switching devices while keeping the effective size of the switching devices unchanged, leave more wire space for the fan-out wire, and enable the narrow-frame design to be applied to the display panel with high refresh rate.

Disclosed is an electroluminescent display device using a variable refresh rate (VRR) mode. The purpose of the present disclosure is to reduce the occurrence of a difference in luminance at a time point of a refresh rate change, thereby preventing viewers from perceiving the variation of the refresh rate.

An embodiment of the present invention discloses an LED driving PWM pulse width modulation device and method. The device includes: a grayscale data module for splitting grayscale data into high-bit grayscale data and low-bit grayscale data, and generating first high-bit grayscale data and second high-bit grayscale data based on the high-bit grayscale data; a PWM counter for counting PWM clock signals and dividing the PWM clock signals into high-bit clock data and low-bit clock data; a selector for time-division multiplexing either the first high-bit grayscale data or the second high-bit grayscale data to the PWM pulse width generation module based on the decoding result of the decoder; and the PWM pulse width generation module for outputting a PWM pulse width signal based on the first high-bit grayscale data, the second high-bit grayscale data, and the low-bit clock data. This device improves the visual refresh rate while maintaining the display grayscale and enhancing the display's detail.

The application discloses a noise reduction processing method and device and electronic equipment, and belongs to the technical field of electronic equipment. The noise reduction processing method comprises the following steps: in the case that the display screen of the electronic equipment is in a bright screen state, the display refresh rate of the display screen and the change amount of the target voltage in the display refresh period are acquired; the display refresh period corresponds to the display refresh rate; the target voltage is the voltage required by each pixel point of the display screen when displaying a picture; a corresponding target anti-interference strategy is determined based on the display refresh rate and the change amount of the target voltage; and display noise is subjected to noise reduction processing based on the target anti-interference strategy.

The invention provides a voltage conversion circuit, a driving method, a circuit board, a computer readable storage medium and a computer program product. Relates to the technical field of display, the voltage conversion circuit comprises a detection control sub-circuit, a conversion sub-circuit and a step-up and step-down sub-circuit, the frequency of a frame start signal and the voltage value of a first voltage signal are detected through the detection control sub-circuit, and under the condition that the frequency and the voltage value do not meet a first preset relation, the step-up and step-down sub-circuit is switched on. The duty ratio of the pulse signal is adjusted to control the on-off of the step-up and step-down sub-circuit so as to achieve the purpose of adjusting and modifying the voltage value of the first voltage signal. The voltage conversion circuit can provide signals with different voltage values according to different refresh rates, so that different refresh rate modes in a refresh rate variable display product are considered, and the performance of the display product is improved.

The application discloses a backlight erasing method and device, equipment and storage medium, relates to the display technical field, and is applied to a display device. The display device contains multiple rows of physical backlight partitions, and the method comprises the following steps: acquiring a preset lighting frequency of each row of physical backlight partitions within a frame time; dividing each row of physical backlight partitions into multiple logical rows according to the preset lighting frequency; determining the total number of logical rows that need to be lighted within the frame time according to the total number of physical backlight partitions and the preset lighting frequency; determining the reference time occupied by each logical row according to the total number of logical rows and the refresh rate of the display device; generating the on-off time sequence of the multiple rows of physical backlight partitions within the frame time based on the total number of logical rows and the reference time; and controlling the multiple rows of physical backlight partitions to perform lighting and extinguishing operations according to the on-off time sequence, so as to realize backlight erasing. The application realizes stable and flicker-free backlight erasing effect.

The invention relates to an information processing apparatus and a control method, in a system in which an appropriate refresh rate is not required, the refresh rate is appropriately reduced to reduce power consumption of a display. An information processing apparatus includes: a first processor that executes processing based on a program of an OS and a program executed on the OS; a second processor that performs image processing on a display image displayed on the display unit on the basis of processing by the first processor, and outputs display data after image processing in a frame order; and a third processor that detects an inter-frame variation amount of the display data displayed on the display unit on the basis of the display data of the plurality of frames output from the second processor, and that controls a refresh rate of the display unit in accordance with an instruction from the first processor, the first processor being configured to control a refresh rate of the display unit on the basis of an event occurring on the OS and the variation amount detected by the third processor. The refresh rate of the display unit is instructed to the third processor.

The invention discloses a display device and a control method and equipment thereof, and relates to the field of display, and the method comprises the steps: obtaining a current target refresh rate of the display device, and determining a first transmission rate of a time sequence signal output by a time sequence controller in the display device under a set horizontal total pixel number based on the target refresh rate; acquiring a second transmission rate at which a power management module in the display device outputs a gate driving signal; and under the condition that the first transmission rate is not equal to the second transmission rate, adjusting the number of horizontal total pixels in the time schedule controller so as to adjust the first transmission rate, and enabling the adjusted first transmission rate to approach the second transmission rate. The technical problem of serious picture tearing is solved.

The invention discloses an intelligent collaborative power consumption management method and system for a high-brush display module, and the method comprises the steps: 1, carrying out the power-on initialization of a system, and reading one or more preset power consumption mode configuration files; 2, monitoring a vertical synchronization signal from a host in real time, and calculating a current actual rendering frame rate; 3, performing real-time analysis on the input one-frame or multi-frame image data, calculating an average pixel level and a picture change area proportion, and judging whether the current content belongs to a static state, a common video state or a high-speed dynamic state; 4, querying a preset strategy table according to the frame rate in the step S2 and the content classification in the step S3 in combination with the currently selected system power consumption mode, and deciding a target refresh rate, a backlight brightness adjustment value and a driving chip core voltage gear; 5, generating a control signal, adjusting an internal register of the driving chip to change the refresh rate and the voltage, and controlling the backlight driver to adjust the brightness; and 6, during scene switching, repeating the steps S2 to S5 to realize dynamic switching.

The present application relates to the technical field of image processing. Provided are a cloud game picture processing method and apparatus, and an electronic device and a storage medium. The method comprises: a client sending a display refresh rate to a server; on the basis of the display refresh rate, the server determining a rendering frame rate of the server; on the basis of the rendering frame rate of the server, the server performing rendering and encoding processing on cloud game picture data, so as to generate encoded data and transmit same to the client; the client receiving the encoded data and performing decoding and rendering processing on the encoded data to obtain decoded data, wherein a rendering frame rate of the decoded data is less than or equal to the display refresh rate; and the client adjusting the display refresh rate to be consistent with the rendering frame rate of the decoded data. By adjusting the rendering frame rate of the server on the basis of the display refresh rate of the client, the present application provides an effective upward redundancy space for a frame rate of data transmission, thereby effectively eliminating the problem of picture tearing in a cloud game by adjusting the display refresh rate.

The invention provides an electronic rearview mirror flicker suppression method and a related device, and the method comprises the steps: judging whether a target vehicle is in a flicker triggering working condition or not according to original image data, vehicle state data and environment data; if it is judged that the target vehicle is in the flicker triggering working condition, a target flicker suppression strategy is determined according to the type of the flicker triggering working condition; and executing a target flicker suppression strategy according to the original image data to obtain target image data. The image acquisition frame rate of the image acquisition equipment, the image processing frame rate of the electronic rearview mirror chip and the refresh rate of the image display equipment are set to be the same 50HZ, so that the phenomenon of imaging lagging and incoherence can be solved, power frequency flicker can be inhibited, different flicker trigger working conditions can be identified, and different flicker inhibition strategies can be executed in a targeted manner, so that the image display efficiency can be improved. And the accuracy of flicker suppression is improved.

The application provides a refresh rate switching method and a terminal device, and is applied to the technical field of terminals to solve the problem that a terminal device cannot flexibly complete refresh rate switching. The method comprises the following steps: a terminal device displays an Nth frame of image; wherein the refresh rate of the Nth frame of image is a first refresh rate; the terminal device detects a preset operation, and the preset operation is used for indicating a target refresh rate; wherein the target refresh rate is different from the first refresh rate; the terminal device changes the level of a refresh rate control pin of a system-level chip of the terminal device according to the target refresh rate; and the terminal device displays an (N+1)th frame of image in response to the level change; wherein the refresh rate of the (N+1)th frame of image is the target refresh rate. The application is applied to the refresh rate switching process of a terminal device.