797 results about "Display driver" patented technology

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.

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.

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.

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.

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.

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 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 utility model provides a wire controller based on gesture recognition control, which is provided with an MCU (Microprogrammed Control Unit) controller, a gesture recognition sensor and an LCD (Liquid Crystal Display) driver, the MCU controller is in circuit connection with the gesture recognition sensor, the MCU controller is in circuit connection with the LCD driver, the gesture recognition sensor has a sleep awakening function, and the LCD driver is in circuit connection with the gesture recognition sensor. The gesture recognition sensor is used for recognizing gesture actions in a recognizable area in an infrared thermal imaging mode and sending a gesture instruction generated based on the recognized gesture actions to the MCU, and the MCU is used for receiving the gesture instruction and sending a corresponding application instruction to an external electric appliance according to the gesture instruction. The MCU controller is further used for receiving feedback information of an external electric appliance and sending the feedback information to the LCD display driver, the LCD display driver is used for receiving and displaying the feedback information, gesture actions can be recognized in an infrared thermal imaging mode, the LCD display driver displays feedback in real time, and the real-time performance of the wire controller in non-contact control is improved.

The invention relates to the technical field of display driving, and discloses a self-adaptive refresh rate method and system for display driving, and the method comprises the steps: carrying out the charge distribution data collection of pixel points of an OLED display screen, and obtaining first pixel charge distribution data; performing differential compensation parameter calculation on the driving circuit to obtain a micro compensation pulse parameter; applying the micro-compensation pulse parameter to a driving circuit and collecting second pixel charge distribution data; executing pixel aging rate matching to obtain an initial pixel driving signal; and performing content perception analysis on the initial pixel driving signal, identifying a static display area, and performing periodic micro-offset processing on the static display area to obtain a target pixel driving signal, thereby solving the problem of inaccurate description of charge accumulation characteristics in the prior art, optimizing a compensation strategy on the premise of ensuring an anti-burn-in effect, and improving the image quality. Extra power consumption is controlled at a low level, and power saving and burn-in prevention under a low refresh rate are realized.

A head-wearable electronic device is provided. The head-wearable electronic device may comprise: a head-wearable housing structure; a display assembly including a first display and a second display located over each eye of a user wearing the head-wearable housing structure; a first display driver circuit connected to the first display; a second display driver circuit connected to the second display; and a processor including one or more processing circuits.

Embodiments of this application provide a display driver circuit, a control method for a display driver circuit, a display module, and an electronic device, and relate to the field of display technologies, to resolve a problem that an over-designed driver circuit cannot meet a low power consumption requirement. The display driver circuit is used in a display module, and may include at least one dynamic bias generator, a plurality of gamma operational amplifiers, a resistor string, and a plurality of source driving channels. The dynamic bias generator is configured to output a dynamically adjustable bias current. At least one of the plurality of gamma operational amplifiers may be electrically connected to the dynamic bias generator, and the gamma operational amplifier is configured to output a gamma reference voltage based on the bias current. The resistor string performs voltage division on output terminals of two adjacent gamma operational amplifiers.

The present disclosure relates a display device and a vehicle equipped with the display device. The display device may include a display driver moving a display, a display winder winding and unwinding the display according to the movement of the display, and a display support unit supporting the display. The display support unit may include a housing supporting the display, a door provided in the housing and movable to enable the display to move into and out of the housing, and a door driver moving the door.

A display driver and a display device including the same are disclosed. The display driver includes a voltage adjustment part that receives a driving voltage from a power supply and outputs a first voltage and a second voltage; a frame memory that receives the first voltage and stores pixel data of input images; a digital circuit part that is driven by receiving the second voltage and includes a memory, a plurality of functional blocks, and a power controller; and a control part that generates a control signal for controlling the driving voltage in response to a signal input from the digital circuit part.

A method of driving a display panel includes outputting a plurality of gate clock signals to the display panel, wherein the display panel includes a full refresh display area and a partial refresh display area. The plurality of gate clock signals are used by a gate driving circuit in the display panel, to generate a plurality of scan driving signals. In a partial refresh frame period, the plurality of gate clock signals keep toggling during N horizontal line periods corresponding to the full refresh display area and stop toggling during M horizontal line periods corresponding to the partial refresh display area.

Circuitry for adjusting luminance of a display device is provided. The circuitry includes a non-volatile memory array having a plurality memory cells configured to store luminance data of the display device, and a luminance adjusting circuit configured to receive image data to be displayed on the display device. The luminance adjusting circuit is coupled directly to the non-volatile memory array to receive the luminance data of the display device from the non-volatile memory array and adjust the image data based on the luminance data of the display device.

A display device comprises pixels arranged in a display area of a display panel, and a display driver determining whether image data indicates still image characteristics or moving image characteristics and controlling a supply timing of data voltages and pixel driving control signals supplied to the pixels based on the determination result, wherein the display driver selectively adjusts a driving frequency for driving the pixels and a level of a high-potential voltage supplied to the pixels based on as result of grayscale analysis of the image data.

The utility model discloses a display driving circuit and a display device, and relates to the technical field of displays, and the display driving circuit comprises a main control chip, a connecting circuit, a handwriting circuit and a backlight circuit. The connecting circuit is connected with the main control chip and is used for connecting the first display screen and the second display screen; the handwriting circuit is connected with the main control chip and used for receiving a user operation instruction and transmitting the user operation instruction to the main control chip, and the main control chip is used for receiving the user operation instruction and outputting a corresponding control signal; the backlight circuit is connected with the main control chip and used for receiving the control signal and outputting a corresponding adjusting signal to the main control chip, and the main control chip correspondingly adjusts the backlight brightness of the second display screen after receiving the adjusting signal; the display driving circuit aims at improving the use convenience of the display driving circuit.

An electronic device may have a display mounted in a housing. The display may have a display panel with an array of pixels on a flexible substrate. A display cover layer may overlap the display panel. The flexible substrate may have a protruding portion that forms a tail. The tail may be coupled to a printed circuit on which a display driver integrated circuit and / or other circuitry is mounted. When the display is mounted in the housing, the tail may be bent back on itself to create a bend. The bend may be embedded in a molded polymer member. The molded polymer member may be attached to the housing with adhesive and may directly contact an inner surface of the display cover layer.

A method of controlling a display panel for a display driver circuit having a frame buffer includes steps of: receiving a first frame of display data and sending the first frame of display data to the display panel by bypassing the frame buffer; starting counting time in a time period for receiving the first frame of display data, to determine whether a timeout occurs; receiving a second frame of display data after the timeout occurs; and writing the second frame of display data into the frame buffer.

A delay control circuit generates output timing signals that cause pixel drive signals to be output at timings after elapse of different delay times. The delay control circuit includes: first to sth delay timing signal generation circuits, generating first to kth delay timing signals that bring about output timings increasing in delay time; a control signal generation circuit, supplying a start pulse signal that initiates generation of the first to kth delay timing signals to the first to sth delay timing signal generation circuits; and a delay signal selection circuit, for each output channel with respect to first to sth delay timing signal groups each including the first to kth delay timing signals, selecting from among s delay timing signals the delay timing signal that brings about an earliest output timing, and setting the delay timing signals as the first to kth output timing signals.

The present application relates to the field of display, and discloses a display driver chip, a display control method, and a related device. The display driver chip comprises: an interface unit, which is used for receiving input data signals transmitted from a first quantity of input ends; a plurality of data processing units, wherein each data processing unit is connected to the interface unit, and each data processing unit comprises a data decompressor and a decoder; a plurality of data storage units, wherein each data storage unit is connected to one corresponding data processing unit, and each data storage unit is used for storing decoded signals of a second quantity of input ends; and a plurality of output units, wherein the second quantity of output units are connected to one data storage unit by means of respective corresponding data transmission units, respectively, each output unit is used for outputting output data signals of a plurality of display columns or display rows, and the first quantity is greater than the second quantity.