1144 results about "Display driver" patented technology

A method of controlling a display panel, wherein the display panel has a plurality of pixels among which a line of pixels are divided into a plurality of groups of pixels, includes steps of: generating a scan control signal for the line of pixels when scanning the line of pixels; outputting a plurality of enable signals, each for controlling one of the plurality of groups of pixels; and determining whether to output a scan signal to each of the plurality of groups of pixels according to the scan control signal and each of the plurality of enable signals when scanning the line of pixels.

The invention relates to a color calibration method and system based on a display driving chip, and the method comprises the following steps: carrying out the sub-pixel spectrum reconstruction of an original spectrum data stream based on a color gamut boundary vector group, and obtaining a sub-pixel spectrum matrix; performing white point chromaticity estimation on the sub-pixel spectrum matrix to obtain white point chromaticity coordinates; performing gamma curve correction on the sub-pixel spectrum matrix based on the white point chromaticity coordinates to obtain a gamma correction coefficient matrix; performing color space conversion on the gamma correction coefficient matrix through a preset three-dimensional lookup table to obtain color control parameters, and inputting the color control parameters into a preset display driving chip to drive sub-pixels of each pixel unit in the display panel to emit light to obtain color calibration display output, the defects of a traditional display driving chip in the aspect of color calibration are overcome, and the defects are mainly embodied in the technical problems that color differences between different display panels cannot be effectively processed and the color drift phenomenon occurs along with time lapse.

The invention provides an image sending and displaying method, electronic equipment, a storage medium and a chip, and relates to the technical field of image processing, and the method can be set as follows: after an upper layer application draws a buffer, a SurfaceFlinger (SF) does not need to wait for a Vsync signal, but immediately synthesizes the buffer drawn by the upper layer application, and after a display screen driver waits for the Vsync signal, the synthesized buffer is sent to a display screen for display; in order to avoid the accumulation of the synthesized buffer, the SF can be set to stop the synthesis and close a Vsync signal sent to the SF once after the buffer is drawn by the upper application and the synthesized buffer is not displayed, and the SF is set to take the latest buffer for synthesis and discard the old buffer when the buffer is synthesized; the method can reduce the delay of the content displayed by the display screen.

A display driver circuit and a control method therefor, and a display device are disclosed. The display driver circuit includes: at least one first scan driving circuit, the at least one first scan driving circuit including: a plurality of first shift registers arranged in cascade, the first shift register including a register input terminal and a register output terminal, and the first shift registers are configured to output a plurality of scan signals; and at least one cascade control module, the at least one cascade control module being connected between a current-stage register output terminal and a next-stage register input terminal, and the at least one cascade control module being connected to a cascade control signal.

An electronic device according to various embodiments of the disclosure may include a first housing on which a first printed circuit board including a processor is disposed, a second housing on which a second printed circuit board including a display driver for a display is disposed, a hinge structure configured to physically connect the first housing and the second housing such that the first housing and the second housing are foldable / unfoldable, and a cable structure configured to electrically connect the first printed circuit board and the second printed circuit board via the hinge structure. The cable structure may include a first cable configured to transfer display signals and a second cable branched off from the first cable to be grounded to the hinge structure.

Disclosed is a flexible display device for a vehicle, including a casing with an opening defined therein, a display unit capable of being retracted into and extended out of the casing via the opening, a display driver for moving the display unit, and a display winder for winding the display unit thereon based on the movement of the display unit.

The invention belongs to the technical field of display driving, and particularly relates to a gate driving circuit and a display panel, the gate driving circuit comprises a plurality of clock signal lines and cascaded N driving units, and the nth-level driving unit further comprises a pre-charging module used for pre-charging the nth-level driving unit under the action of a level transmission signal of the (n-i) th-level driving unit, the driving control node is charged through a first driving signal of the (n-i) th-stage driving unit; the output module is used for outputting a first driving signal through the first driving output end and outputting a second driving signal through the second driving output end under the action of the control voltage on the driving control node; according to the gate driving circuit, the number of the driving units can be reduced by half on the premise that the number of the output signals is the same through the mode that the first-stage driving unit outputs the two driving signals, so that the number of transistors in the gate driving circuit is greatly reduced, a narrow-frame product can be achieved, meanwhile, the cost of a panel is reduced, and the stability of the panel is improved.

The invention provides an interface display method and a related device. The method comprises the following steps: when a display screen receives an Nth frame of image transmitted by a display driver, refreshing and displaying the Nth frame of image, wherein a frame rate corresponding to the Nth frame of image during drawing and rendering is a first frame rate; in the first duration of refreshing and displaying the Nth frame of image, under the condition that the display screen does not receive the (N + 1) th frame of image transmitted by the display driver, the display screen does not read the Nth frame of image from the cache and keeps displaying the Nth frame of image; the first duration is greater than the period duration corresponding to the first frame rate; after the display screen refreshes and displays the Nth frame of image for a first time length, when the display screen receives the (N + 1) th frame of image transmitted by the display driver, the display screen refreshes and displays the (N + 1) th frame of image, the frame rate corresponding to the (N + 1) th frame of image during drawing and rendering is a second frame rate, and the second frame rate is smaller than the first frame rate. The refresh rate is adaptively adjusted, the image refresh frequency is reduced, and power consumption is reduced.

The invention discloses a display device and a display driving chip and method thereof. A display area of the display panel comprises a high-refresh-rate display area and a low-refresh-rate display area which are adjacent to each other. And in the whole refresh frame period, the high-refresh-rate display area and the low-refresh-rate display area refresh data. In the local refresh frame period, the high-refresh-rate display area refreshes data, and the low-refresh-rate display area does not refresh data. The controller controls the gate driver such that a boundary of the high refresh rate display area and the low refresh rate display area in the first partial refresh frame period is different from a boundary of the high refresh rate display area and the low refresh rate display area in the second partial refresh frame period.

Systems and methods for varying an intensity of pixels of displays are provided. A display subsystem may include a display driver for receiving image frame data and commands from an image or data source, including pixel intensity values for bit planes of an image frame; a parser for receiving the image frame data and the commands, and configured to determine a drive waveform having an pixel drive value and a pixel drive time interval for each bit plane of the image frame data; a display backplane for receiving the drive waveform, the display backplane including a pixel array comprising an array of pixels, each pixel driven by a pixel circuit; and display driver circuitry for driving the pixels in accordance with the drive waveform; and wherein an intensity of the pixel varies for each bit plane according to the pixel drive value and the pixel drive time interval.

A method of controlling a display panel for a display driver circuit includes steps of: starting counting time in a time period for receiving a first frame of display data, to generate a timing result; determining whether a timeout occurs according to the timing result; and outputting a control signal to instruct a host processor to transmit a second frame of display data at a time when the timeout occurs.

The invention relates to the technical field of screen display adjustment and visual health protection, and discloses a screen color temperature intelligent adjustment method and system, and the method comprises the steps: obtaining a user face image sequence and ambient light perception data; according to the face image sequence, eye features are extracted, a dynamic change trend is analyzed, blinking frequency and eyelid closing duration data are calculated, and a visual fatigue evaluation value is obtained; according to the ambient light sensing data and the visual fatigue evaluation value, correcting the fatigue degree and classifying fatigue stages to obtain color temperature and brightness adjustment parameters; and transmitting the adjustment parameter to a screen display driver for gradual change processing to obtain a final screen display configuration. According to the method, personalized accurate adjustment of the screen parameters is realized, visual fatigue is effectively relieved, and the use experience and the visual health protection effect are improved.

The invention discloses a display driving circuit and a display device. The display driving circuit comprises a scanning control module and an output module, the scanning control module comprises a forward control unit, a reverse control unit and a first control node which are symmetrically arranged; wherein the forward control unit comprises a first transistor and a first leakage protection module, and the reverse control unit comprises a second transistor and a second leakage protection module; the forward control unit and the reverse control unit are used for enabling the scanning control module to realize a forward and reverse scanning function according to signals input into the control ends of the transistors, and outputting a first control signal to the output module through a first control node; and the output module is used for performing pull-up control and / or pull-down control according to the first control signal so as to output a driving signal. Therefore, according to the technical scheme, the display driving circuit is optimized, electric leakage can be avoided or electric leakage current can be reduced, and therefore the output stability of the driving signal is ensured.

This application is directed to a method for correct temperature measurement. An electronic device includes a temperature sensor that measures an ambient temperature of an environment and a display that is driven by a display driver. The electronic device determines a brightness setting of the display, estimates a display driver current based on the brightness setting, estimates a driver efficiency of the display driver based on the display driver current, and combines a predetermined display driver voltage, the display driver current, and the driver efficiency to determine a power consumption of the display driver. An ambient temperature correction is determined in accordance with the determined power consumption of the display driver, and the measured ambient temperature is thereby corrected using the ambient temperature correction. In some implementations, a power consumption of a distinct heat-generating electronic component is also monitored for adjusting the ambient temperature correction.

The invention provides an OLED (Organic Light Emitting Diode) display panel sub-pixel level color equalization compensation method and system based on a De-Mura compensation technology. The method mainly comprises the steps that a brightness industrial camera shoots brightness data of different gray scales of the OLED display panel for the first time, a brightness uniformity preprocessing process is synchronously carried out, compensation parameters are burnt into a DDIC (Double Data Integrated Circuit), whether chromaticity uniformity compensation needs to be carried out or not is selected according to the chromaticity uniformity expression after brightness uniformity compensation, and if chromaticity uniformity compensation needs to be carried out, the brightness uniformity compensation is carried out. If yes, a shot gray scale picture is determined according to the color expression condition of the OLED panel, the chroma industrial camera shoots different gray scale and chroma data of the OLED display panel for the second time, chroma data processing is carried out to obtain a compensation coefficient, the compensation coefficient acts on brightness compensation data, and therefore brightness and chroma uniformity compensation parameters are obtained; and realizing the brightness and chromaticity compensation of the OLED display panel based on the compensation parameters.

The invention relates to the technical field of display, and provides an image display method, electronic equipment and a computer storage medium, and the method comprises the steps that a display driver of the electronic equipment obtains a display frame rate of an application program and a minimum refresh rate of a display screen; when the display frame rate is greater than the minimum refresh rate, the display driver configures a first refresh rate queue for the display driver chip; the first refresh rate queue comprises at least two refresh rates which are arranged from high to low, and each refresh rate is greater than or equal to a display frame rate and less than or equal to the lowest refresh rate; the display driver controls the display driving chip to refresh pictures to the display screen according to the first refresh rate in the first refresh rate queue; and under the condition that the SF does not send the picture, the display driver controls the display driver chip to refresh the picture to the display screen according to the next refresh rate in the first refresh rate queue according to the arrangement sequence of the refresh rates in the first refresh rate queue. Therefore, under the condition that the upper-layer SF does not send the picture, the DDIC can be prevented from repeatedly refreshing the picture, so that unnecessary power consumption is reduced.

An electronic device, including a memory; a display panel; an image sensor disposed at a lower end of the display panel; a processor operatively connected to the image sensor; and a display driver integrated circuit operatively connected to the display panel and the processor, and configured to sense that a first frame is output on the display panel and to transmit a first signal to the processor based on the first frame being output on the display panel, wherein the processor is configured to: generate the first frame having a designated pixel value based on a shoot command being received from a user, control the display panel to output the first frame, and control the image sensor to capture an image based on the first signal being received from the display driver integrated circuit, and store the captured image in the memory.

A scan driver includes stages which sequentially output scan signals to scan signal lines during an active period of an N-th frame, and at least one of the stages includes an output node controller that supplies a gate-on voltage to a pull-up node in response to a gate control signal of a display driver; and an output controller that outputs a scan signal to a scan signal line by outputting a scan clock signal to a scan signal line in case that the gate-on voltage is supplied to the pull-up node, wherein the output node controller includes a thin-film transistor including a first active layer, and directly or indirectly connected to the pull-up node, and another thin-film transistor including a second active layer including an oxide semiconductor material different from a oxide semiconductor material of the first active layer, and directly connected to the pull-up node.

A display device is provided. The display device includes a display unit, a touch unit, a display driver configured to drive the display unit and including a synchronization signal generator, and a touch driver configured to drive the touch unit and including a synchronization signal receiver and a touch signal adjuster, wherein the synchronization signal generator is configured to generate a first synchronization signal supporting a frequency of a display signal applied to the display unit based on input frame frequency information and a second synchronization signal supporting the frequency of the display signal and including the frame frequency information, based on the frame frequency information and the first synchronization signal, and wherein the synchronization signal receiver is configured to receive the horizontal synchronization signal.

An electronic device, method, and computer program product provide a flexible display that is configurable when being worn around a wrist of a user to increase a display width area. The electronic device includes a strap having an outer layer presenting the flexible display and an inner support layer attached to an underside of the flexible display. The strap is positionable between an uncoiled position and the coiled position with lateral edges of first and second terminal ends of the strap juxtaposed in abutted alignment. In response to determining the coiled position based on a sensor or a user interface input, a display driver of the electronic device selectively renders display content and presents rendered display content within a coil display area that is two straps wide of terminal ends of the strap in juxtaposed adjacent position.

The invention relates to the technical field of display, and provides a refresh rate switching method, electronic equipment and a computer readable storage medium, and the method comprises the steps that a display driver of the electronic equipment controls a first DDIC to refresh a first display screen according to a refresh rate of a first queue; the display driver receives a first refresh rate switching instruction, wherein the first refresh rate switching instruction carries the display frame rate of the APP displayed on the first display screen and / or the minimum refresh rate of the first display screen; configuring a second queue for the first DDIC according to a display frame rate and / or a minimum refresh rate carried in the first refresh rate switching instruction; and if the first queue is a first-class refresh rate queue and the second queue is a second-class refresh rate queue, controlling the first DDIC to refresh a first display screen according to the refresh rate in the second queue before the TE signal is not skipped, and synchronously issuing an instruction to control a TE signal shielding function to be opened. Therefore, the problem of abnormal frame rate when the first DDIC is switched from the first refresh rate queue to the second refresh rate queue can be avoided.

A method for driving display of a display panel, a display driver and an electronic device are provided. The display panel includes a display array for displaying an image, the display array includes multiple pixel units arranged in an array, the method includes: obtaining to-be-displayed data of the pixel units; dividing the display array into at least two sub-display-areas with different priorities based on the to-be-displayed data of each pixel unit, each sub-display-area includes multiple pixel units arranged consecutively; and controlling the pixel units in each sub-display-area for image display based on the priority; controlling, for a sub-display-area with highest priority, the pixel units for image display based on the to-be-displayed data; controlling, for a sub-display-area with non-highest priority, at least part of the pixel units for image display based on corrected display data.

The utility model discloses a shutdown control circuit, a display driver and a display device, and the shutdown control circuit comprises a control unit which is connected with a grounding end; the voltage output unit is connected with the control unit, the voltage output unit comprises a plurality of transistors, and source ends or drain ends of the transistors are connected with data lines or scanning lines in the display panel in a one-to-one correspondence manner; wherein the control end of the control unit is connected with the first output end of the source electrode driving circuit so as to receive a second control signal or a third control signal, and the control end of the voltage output unit is connected with the second output end of the source electrode driving circuit so as to receive a first control signal. According to the power-off control circuit, the display driver and the display device, the charges in the display panel are released to the grounding end through the transistor in the power-off control circuit after power-off, the function of rapid discharging after power-off is achieved, and the problems of power-off ghost shadow and splash screen are solved.

Embodiments of the present application provide an electronic device and its driving method, display driver, and processor, relating to the field of electronic technology. These devices are used to ensure that the actual screen refresh rate can promptly respond to the image refresh rate of a core processing chip, such as an upper-layer SOC. The electronic device includes a display driver IC (DDIC) and a system-on-chip (SOC). The display driver IC (DDIC) is used to transmit a time-of-flight (TE) signal. The TE signal has a first fixed frequency f1, where f1 is a common multiple of the multiple screen refresh frequencies f supported by the electronic device. For example, if the electronic device supports 60 Hz, 90 Hz, and 120 Hz, then f1 is 360 Hz. The SOC is used to receive the TE signal and output display data to the display driver IC at a variable frequency f2. Here, f1 = n * f2. Therefore, the pulse period of f1 is the first pulse period T1, and the pulse period of f2 is the second pulse period T2, where T2 = n * T1. n is the ratio of f1 to the current frame's f. The second pulse period T2 of the current frame f2 is always n times the first pulse period T1 of f1, meaning that display data is always transmitted once every n T1s. n varies with the screen f.

The invention relates to the technical field of display, and provides a display screen brightness adjusting method, electronic equipment and a computer storage medium, and the method comprises the steps: a display driver of the electronic equipment controls a display driving chip to brush a picture on a display screen according to a refresh rate in a first queue; wherein the first queue is a first-class refresh rate queue or a second-class refresh rate queue; the display driver receives a dimming instruction; wherein the dimming instruction indicates to adjust the brightness of the display screen; in response to a received dimming instruction, if the first queue is a first-class refresh rate queue, a display driver controls a display driving chip to refresh a display screen according to a 60Hz refresh rate and then controls the display driving chip to adjust the brightness of the display screen based on the dimming instruction; and if the first queue is the second-class refresh rate queue, the display driver controls the display driving chip to adjust the brightness of the display screen based on the dimming instruction. Therefore, synchronization of dimming and DDIC image brushing caused by synchronization of the dimming instruction and the TE signal of the brushless image can be avoided, and the problem of display flicker is avoided.

The present disclosure provides a display driving circuit, comprising: an oscillator for generating an oscillator clock; the real-time tracking circuit is connected with the oscillator and is used for performing real-time tracking control on the oscillator based on an external clock, so that the oscillator clock generated by the oscillator tracks the frequency of the external clock; the clock spread spectrum circuit is connected with the oscillator and is used for performing spread spectrum control on the oscillator, so that an oscillator clock generated by the oscillator is spread spectrum; and the display control circuit is connected with the oscillator, the real-time tracking circuit and the clock spread spectrum circuit, and is used for alternately enabling the real-time tracking circuit and the clock spread spectrum circuit by utilizing an enabling control signal and generating a display driving signal according to an oscillator clock generated by the oscillator. The invention further provides a display driving chip and electronic equipment.

An display panel, including: a flexible display substrate; a circuit board on a back side of the flexible display substrate, wherein the circuit board is bonded and connected to the flexible display substrate, and is provided with a circuit device on a back side of the circuit board far away from the flexible display substrate; an auxiliary bending protection structure on the back side of the flexible display substrate, wherein the auxiliary bending protection structure is fixedly connected to the back side of the flexible display substrate, and the circuit device is in a region where the auxiliary bending protection structure is located.

The invention provides a display method and electronic equipment, the electronic equipment comprises a power-on detection unit, a main chip, a first control unit, a display power supply, a display driving chip and a display panel, the first control unit is used for initializing when receiving a first signal sent by the power-on detection unit, and displaying the first signal on the display power supply; the first signal is used for indicating the electronic equipment to start; the main chip is used for performing initialization when receiving a second signal sent by the startup detection unit or the first control unit; the first control unit is used for sending a third signal to the display power supply when initialization is completed; the first control unit is used for sending a fourth signal to the display driving chip when initialization is completed, and the fourth signal is used for triggering the display panel to display the first icon. According to the method, the time delay of displaying the icon after startup can be reduced, the waiting time and anxiety of the user are reduced, the user is reminded of the startup state of the electronic equipment in time, the user is prevented from executing the redundant startup operation again, and the user experience is improved.

The invention discloses a display driving circuit and a display device.The display driving circuit comprises a repairing unit, the repairing unit is connected with a clock signal line in series, a time schedule controller is connected with a grid driving circuit through the repairing unit and the clock signal line, the repairing unit comprises a first MOS transistor and a second MOS transistor, the first MOS transistor is an N-type MOS transistor, and the second MOS transistor is an N-type MOS transistor. The input end and the control end of the first MOS tube are electrically connected with the time schedule controller, and the output end of the first MOS tube is electrically connected with the gate drive circuit; the second MOS tube is a P-type MOS tube, the input end and the control end of the second MOS tube are both electrically connected with the time schedule controller, and the output end of the second MOS tube is electrically connected with the gate drive circuit. Through the design, the display problem caused by waveform distortion of the clock signal after the row overdrive technology is adopted is avoided.

The invention relates to a data processing method and device, equipment and a storage medium, and the method comprises the steps: responding to the detection of an application interface of a target application program displayed on a display screen, counting the display data of a target region in the application interface, and obtaining a target statistical result, the target region being a region associated with the burn-in of the display screen; determining gray scale compensation data of the target area based on the target statistical result; and DeMura target data are determined on the basis of DeMura original data obtained in advance and the gray scale compensation data. According to the invention, data storage and operation space can be saved, system power consumption can be reduced, and subsequent Mura compensation of a display screen based on a display driving chip DDIC is realized.