152 results about "Dark line" patented technology

The invention relates to a breakpoint repairing circuit, method, device and equipment for a display panel and a medium, and the method comprises the steps: connecting a repairing line under the condition that a breakpoint of the display panel is detected; the gain of the signal entering the repair line is adjusted through a gain circuit, and the gain circuit is arranged on a circuit board outside the display panel; and a high-pass filtering link is connected into the repair line, and signal attenuation on the repair line is compensated through the high-pass filtering link. The signal gain on the repair line is adjusted by introducing the gain circuit, and the signal attenuation on the repair line is compensated through the high-pass filtering link, so that the possible phenomenon that the brightness of the repaired section is not uniform is inhibited, and the problem that the overall dark line of the repaired section still appears after breakpoint repair is performed through the repair line is solved.

The invention belongs to the field of display, and particularly relates to a driving module and a display device.The driving module comprises source electrode driving chips, a polarity partition control module, a picture detection module and a frequency division selection module, the source electrode driving chips in odd columns are connected with first signal lines, and the first signal lines are used for transmitting first polarity reversal signals; the source electrode driving chips in even columns are connected with the polarity partition control module through second signal lines, and the picture detection module is used for controlling the polarity partition control module to work according to the detected crosstalk degree of the display picture to form a conventional polarity mode and a polarity symmetry mode. The polarity partition control module enables the polarities of display areas controlled by adjacent source electrode driving chips to be symmetrical to offset coupling and eliminate transverse crosstalk, and the frequency division selection module is used for halving the frequency of a first polarity reversal signal and a second polarity reversal signal in a polarity symmetrical mode, so that bright and dark lines are prevented from being formed at a boundary position, and the display effect is improved. And the display effect of the display panel is improved.

The invention discloses a liquid crystal display screen bright and dark line adjustment optimization method and system and a display screen, and relates to the technical field of liquid crystal display screens, and the method comprises the following steps: constructing a femtosecond resolution synchronous sampling matrix, employing a photoelectric hybrid probe to carry out in-phase collection on driving voltage rising edges of a plurality of sub-channels of the liquid crystal display screen, generating an original waveform database of the multi-channel driving voltage; based on an original waveform database, quantum dot calibration pulses with time marks are injected into all the sub-channels, phase deviation sequences among all the sub-channels are analyzed and extracted through timestamp linkage, and a cross-channel synchronization deviation reference baseline is established. By means of high-precision sampling and difference frequency regulation and control, approximate synchronization of multi-channel driving voltage of the liquid crystal display screen is achieved, accurate recognition is achieved, phase deviation is dynamically corrected, abnormal display phenomena such as frame skipping, ghost shadows and color cast are remarkably eliminated, and visual consistency and display stability in a high-dynamic scene are improved.

The invention belongs to the field of display, and particularly relates to a driving module and a display device.The driving module comprises a plurality of source electrode driving chips, an inversion mode selection module, a polarity partition control module and a picture detection module, and each source electrode driving chip is connected with multiple columns of data lines of a display panel; the inversion mode selection module is used for selectively outputting a first polarity signal or a second polarity signal, and the second polarity signal can enable continuous even number of polarities in the row direction of the display area controlled by the source electrode driving chip to be inverted; and the polarity partition control module is used for outputting the first polarity signal or the inverted second polarity signal to the source driving signals of the even columns to form a polarity symmetric mode. In the polarity symmetry mode, the pixel voltage coupling directions of the display areas controlled by the adjacent source electrode driving chips are opposite, crosstalk can be improved or eliminated, bright and dark lines can be prevented from being formed at the boundary position, and the display effect of the display panel is improved.

The invention provides a double-light module and a vehicle lamp, and relates to the technical field of illumination. Comprising an ADB light source, a low-beam light source, an ADB lens, a low-beam lens and a multi-focus lens module, the multi-focus lens module comprises a first lens module and a second lens module, and a first focus of the first lens module is different from a second focus of the second lens module; emergent light rays of the ADB light source are connected into the ADB lens, and the emergent light rays of the ADB lens are emitted in an ADB light form after passing through the first lens module; the low-beam lens is connected with emergent light of the low-beam light source, and the emergent light of the low-beam lens is emitted in a low-beam light shape after passing through the second lens module. The multi-focus lens module is adopted to receive emergent light of the ADB lens and the low-beam lens, focuses of lens modules corresponding to the low-beam module and the ADB module are separated, the problems of light shape splicing, splicing dark lines, serious dispersion and the like caused by the fact that the low-beam module and the ADB module share the focus lens are solved, and the performance of the automobile lamp is improved.

The invention belongs to the field of display, and particularly relates to a display panel and a display device.The display panel comprises multiple columns of data lines and multiple sub-pixels arranged in an array mode, each column of sub-pixels is arranged between two adjacent data lines, the sub-pixels in odd-numbered rows and even-numbered rows are connected with the data lines on different sides in the adjacent data lines, and the sub-pixels in the odd-numbered rows and the sub-pixels in the even-numbered rows are connected with the data lines on different sides in the adjacent data lines. Double-control sub-pixels are arranged in pixel columns at the junction of the display areas controlled by the source electrode driving chips in the odd-numbered columns and the even-numbered columns, the double-control sub-pixels are sub-pixels in odd-numbered rows or even-numbered rows, the double-control sub-pixels are further connected with another data line except the adjacent data line, and each double-control sub-pixel is connected with the corresponding data line through a selection unit. In the polarity symmetric mode, the selection unit switches the polarity of the double-control sub-pixel, so that the polarity of the double-control sub-pixel is different from the polarity of other sub-pixels in the same column, the polarity of the sub-pixels in the pixel column at the junction is alternated, bright and dark lines can be prevented from being formed at the boundary, and the display effect of the display panel is improved.

The invention relates to the technical field of multi-camera systems, and discloses a multi-camera time synchronization method, device and equipment and a storage medium, and the method comprises the steps: setting the refresh rate of screen display content and the frequency of a screen PWM modulation wave, the frequency of the PWM modulation wave being less than or equal to half of the refresh rate of the screen display content; controlling a plurality of cameras to shoot the dynamic screen, and selecting a group of photos which are shot by different cameras and have the same screen display content; taking one camera as a reference camera, and taking the position of one dark fringe in a picture shot by the reference camera as a reference position; comparing dark fringe positions in photos shot by other cameras with the reference position to obtain a pixel difference set of each camera; and adjusting the time of the camera to be synchronous with the time of the reference camera according to the pixel difference set of each camera. According to the invention, photo pixels are converted into time statistics by using dark fringes generated by a screen during PWM dimming, the alignment precision is high, and the investment cost is low.

The invention discloses a display picture driving method and device and a display device. The display picture driving method comprises the following steps: acquiring a driving voltage of each sub-pixel in a display picture; according to the driving voltage of the plurality of sub-pixels, determining the driving load pumping amount of each source electrode driving chip when each row of sub-pixels are driven; determining a driving gray-scale value of each sub-pixel driven by the s-th source electrode driving chip in the i-th row according to the driving pumping amount of the s-th source electrode driving chip when driving the sub-pixels in the i-th row; wherein s is a positive integer, and i is a positive integer. The dark line degree caused by insufficient driving can be quantified in real time, and targeted gray scale compensation can be performed on each sub-pixel, so that horizontal crosstalk caused by insufficient driving can be eliminated in real time, single or multiple abnormal dark lines are prevented from appearing in a display picture, and the display effect of the display device is improved.

The invention belongs to the field of display, and particularly relates to a polarity zoning control module, a display panel, a driving module and a display device.The polarity zoning control module is used for controlling the display panel to conduct polarity zoning to form a conventional polarity mode and a polarity symmetry mode, the display panel comprises at least one display area, each display area comprises a plurality of columns of data lines and a plurality of sub-pixels arranged in an array mode, each column of sub-pixels is arranged between two adjacent data lines, each sub-pixel is connected with two data lines corresponding to the column where the sub-pixel is located, the polarity partition control module comprises a plurality of signal lines and a plurality of selectors, and the signal lines are connected with the selectors. Every two adjacent data lines in the row direction form a data line group, and each data line group is connected with one signal line through one selector. In the polarity symmetric mode, the first polarity subarea and the second polarity subarea in the display area are symmetric in polarity, crosstalk is improved or eliminated, bright and dark lines can be prevented from being formed at the boundary, and the display effect of the display panel is improved.

The invention belongs to the field of display, and particularly relates to a driving module and a display device.The driving module comprises a plurality of source electrode driving chips, a polarity partition control module, a picture detection module, an inversion time prolonging module and an inversion signal control module, and each source electrode driving chip is connected with multiple columns of data lines of a display panel; the source electrode driving chips in the odd-numbered columns are connected with the pull-down power supply, the polarity partition control module controls the source electrode driving chips in the even-numbered columns to be connected with the pull-up power supply or the pull-down power supply, and the picture detection module is used for detecting whether the display panel needs polarity partition or not, so that the polarities of display areas controlled by the adjacent source electrode driving chips are symmetrical; and the inversion time prolonging module is connected with all the source electrode driving chips and is used for prolonging the interval time of polarity inversion of the display panel. When polarity partitioning needs to be carried out, the interval time of polarity inversion is prolonged through the inversion time prolonging module, the problem of bright and dark lines can be eliminated while transverse crosstalk is relieved, and the display effect of the display panel is improved.

The invention relates to the technical field of image data processing, in particular to an image line extraction method based on a GPU. The method comprises the following steps: calculating convolution of a first-order partial derivative and a second-order partial derivative of a two-dimensional Gaussian function and an image; calculating a line normal direction according to a Hessian matrix of the two-dimensional discrete image, and performing Taylor expansion on the gray level distribution function along the normal direction to obtain a line center point sub-pixel position; and connecting the contour points according to the distance between the adjacent contour points, the normal direction and other information and a connection rule, and extracting lines in the image. The invention provides an image line extraction method based on a GPU (Graphics Processing Unit), which can accurately and efficiently extract bright and dark lines in an image.

The invention is suitable for the technical field of LED display, and provides a bright and dark line positioning method, electronic equipment and a computer readable storage medium, and the method comprises the steps: obtaining a to-be-recognized image of a test image generated according to the parameters of a to-be-tested screen, and determining the gradient parameter and gradient direction of each pixel in the to-be-recognized image; and at least one bright and dark line in the to-be-identified image is positioned according to the gradient parameter and the gradient direction of each pixel in the to-be-identified image and the parameter of the to-be-tested screen, so that the bright and dark line in the to-be-tested screen can be automatically and accurately positioned according to the gradient parameter and the gradient direction of each pixel in the to-be-identified image and the parameter of the to-be-tested screen. The problem of inaccurate bright and dark line positioning caused by manual positioning is solved.

The invention relates to a lamp point correction method of an LED display screen, a terminal, equipment and a system, and the method comprises the steps: controlling a to-be-corrected region of the LED display screen to display a preset image, and enabling the preset image display region to comprise a gap at the splicing part between target display units of the to-be-corrected region, a target image obtained by collecting the screen body after the preset image is displayed in the to-be-corrected area through the collecting device is obtained, a gap correction coefficient is generated according to the target image, and the gap correction coefficient is used for correcting at least one adjacent lamp point on the two sides of the gap. According to the method, a good bright and dark line correction effect can be obtained without professional shooting equipment such as a tripod and a camera support, the applicability of the scheme in various scenes is improved, and the bright and dark line problem caused by more types of gap causes can be corrected.

The invention relates to a display panel and a repairing method of the display panel, and relates to the technical field of display screens. According to the invention, when the gate lines are scanned one by one, the current values of the plurality of data lines simultaneously driven by the data driving circuit based on the preset data signals are obtained, whether a fault occurs is determined through the current values, and the faulted gate lines and / or circuits related to the gate lines are further locked. Therefore, the fault gate line and / or the circuit related to the gate line can be automatically detected, whether the fault occurs or not is determined through the current value, the troubleshooting efficiency can be improved, a basis is provided for the process of repairing a weak line or a dark line, and the repairing efficiency is improved.

The invention relates to the technical field of flexible LED screens, in particular to a full-angle flexible splicing type LED screen which comprises a frame, circuit elements and display units, the curvature of the frame is variable, the multiple display units are arranged on the frame in a rectangular array mode, and the circuit elements are installed in the frame and electrically connected with the display units. By arranging the compensation assembly, when the display unit generates a dark line on the gap due to curvature change, the positioning magnet generates an inclination angle relative to the edge side surface of the display unit according to the deformation quantity of the display unit, so that the magnetic induction line between the positioning magnet and the compensation unit is changed, and the compensation light source is driven to rotate; the reflecting plate is arranged in the gap, so that scattered light of the compensation light source is converted into directional light reflected towards the outside of the gap through the reflecting plate, dark lines are prevented from being generated in the gap, it is guaranteed that when the display unit is in various curvatures, the dark lines generated by a screen can be automatically compensated according to the deformation quantity of the display unit, and the display effect of the screen is guaranteed.

The invention provides a laser chip temperature real-time measurement and defect detection system, which comprises an infrared thermal imager, a photoelectric detector, a temperature control platform and a main control computer, the temperature control platform provides a stable chip operation environment, the photoelectric detector detects the occurrence of early COD through the change of the reflectivity of a cavity surface, and the main control computer detects the defect of the chip. The thermal infrared imager captures thermal radiation signals on the surface of the chip in real time so as to monitor temperature distribution changes, judge the occurrence of dark line defects and position the dark line defects, the thermal infrared imager and the photoelectric detector are respectively connected with the main control computer, and signals and data are transmitted to the main control computer. And carrying out data processing and visualization by virtue of analysis software, and finally realizing accurate monitoring of the whole process of chip defects from early formation to evolution expansion.

The invention discloses a display screen bright and dark line adjustment optimization method and system and an LED display screen, and belongs to the technical field of display, and the method comprises the steps: obtaining brightness response data of a target display screen under multi-gray-scale input, and constructing a bright and dark line initial response distribution diagram; identifying a target gray stage based on brightness fluctuation characteristics, and extracting brightness deviation slope characteristics to construct a characteristic set; constructing a bright and dark line local response model based on the feature set; generating a driving adjustment vector in combination with the model, the brightness expected value and the current adjustment range; after the adjustment vector is applied to the display screen, brightness response is collected again, and an adjusted response matrix is constructed; comparing the brightness difference before and after adjustment, and if the preset tolerance is not reached, updating the model and repeatedly adjusting until the brightness consistency requirement is met; and finally outputting an adjustment scheme for batch optimization. According to the method, high-precision identification and iterative adjustment of bright and dark line defects are realized, the display uniformity is improved, and the method has good industrial application value.

The present application belongs to the field of display, and specifically relates to a polarity partition control module, a display panel, a driving module and a display device. The polarity partition control module is used to control the display panel to perform polarity partitioning to form a conventional polarity mode and a polarity symmetric mode. The display panel includes at least one display area, each display area includes multiple columns of data lines and multiple sub-pixels arranged in an array, each column of sub-pixels is arranged between two adjacent data lines, and each sub-pixel is connected to the two data lines corresponding to its column, and the polarity partition control module includes multiple signal lines and multiple selectors. Every two adjacent data lines in the row direction form a data line group, and each data line group is connected to a signal line through a selector. In the polarity symmetric mode, the first polarity partition and the first polarity partition in the display area are polarity symmetrical, which not only improves or eliminates crosstalk, but also avoids the formation of bright and dark lines at the boundary, thereby improving the display effect of the display panel.

This invention provides a directly coupled stacked structure for improved image quality in optical devices. [Solution] Optical surfaces are planarized and plasma activated to laminate them together, and then a direct bond is formed between the two surfaces without adhesive or an adhesive layer. This process provides an improved optical element with higher image brightness, lower light scattering, better resolution, and higher image fidelity. Direct bonding also provides a heat-resistant interface that can withstand much higher temperatures than conventional optical adhesives. Exemplary processes can be used to manufacture many types of improved optical components such as improved laminated lenses, mirrors, beam splitters, collimators, prism systems, optical conduits, and specular waveguides for smart glasses and head-up displays (HUDs), which provide better image quality and elimination of dark lines of sight that are apparent to the human observer when conventional adhesives are used in conventional lamination.

This application relates to a display panel and its driving method. The method includes: charging each sub-pixel on the display panel, and sampling a first sub-pixel and a second sub-pixel on a preset detection row after charging to obtain a feedback signal. The first sub-pixel and the second sub-pixel input the same data signal. The feedback signal includes a first voltage signal and a second voltage signal. The first sub-pixel and the second sub-pixel have a preset positional relationship on the display panel, and the preset detection row does not participate in the display. The method also includes: determining a voltage difference value between the first sub-pixel and the second sub-pixel in the current frame based on the first voltage signal and the second voltage signal; determining a display compensation value corresponding to the voltage difference value based on a preset matching strategy; and using the display compensation value to compensate the data output of a target sub-pixel in the next frame, wherein the target sub-pixel is determined by the preset matching strategy. This application solves the problem of difficulty in achieving accurate compensation for bright and dark lines in existing display panels.

This invention discloses an array substrate and a display panel. The array substrate includes: a first signal line and a second signal line on the same layer; along a direction perpendicular to the plane of the substrate, the active layer of at least one first sub-pixel does not overlap with the second signal line, and the active layer of at least one second sub-pixel does not overlap with the second signal line; within a preset voltage range, the data writing voltage of at least one first sub-pixel is equal to the data writing voltage of at least one second sub-pixel, avoiding charging differences between the first and second sub-pixels, which would cause differences in display brightness between the first and second sub-pixels, thus improving the problem of poor dark lines and enhancing the display effect.

The invention discloses a method and equipment for monitoring lower limb vein deformation and blood flow based on an M-type ultrasonic technology, and the method comprises the steps: carrying out the M-type ultrasonic scanning of the lower limb skin of a user in a motion state in a preset sampling line direction through a flexible patch type ultrasonic probe; based on a preset grayscale signal gradient condition and a region-of-interest extraction condition, converting the scanned M-type ultrasonic image into a grayscale image, extracting a region-of-interest from the grayscale image, marking a low-pixel line segment representing a blood vessel envelope region in the region-of-interest as a'dark line ', d-type ultrasonic waves of a flexible patch type ultrasonic probe are used for measuring an optimal sampling line of a dark line, integration is carried out on deformation of the dark line along with time, the part between two adjacent waveforms in an obtained broken line graph is marked as a dark area, integration is carried out on changes of the edge and the internal pixel value of the dark area along with time, and the optimal sampling line of the dark line is obtained. And outputting a motion waveform image of the depth positions of the vein tube wall and the vein valve along with the time change, and calculating the vein deformation quantity of the lower limb muscles.

This application belongs to the field of display driving technology, and specifically relates to a display driving method, a display panel, and a display device. The display driving method includes: obtaining the actual display data of the current frame of the picture; generating first-row precharge data according to the first-row data in the actual display data; splicing the first-row precharge data and the actual display data to obtain target display data, and performing display driving according to the target display data. This application precharges the first-row pixels according to the first-row precharge data in advance, so that the first-row pixels of the display panel can obtain sufficient charging voltage when the actual first-row data arrives, thereby solving the problem of dark lines at the top of the display panel and improving the display effect.

A colored resin composition includes a colorant, an alkali-soluble resin, a polymerizable unsaturated compound, a photoinitiator, and a solvent, wherein the alkali-soluble resin contains a photocurable resin, and the weight average molecular weight (Mw) of this photocurable resin is less than 20,000, and the potassium hydroxide (KOH) titration acid value is less than 100 mg / g. The display device using the colored resin composition disclosed herein can avoid the exposure defects generated by the pixels of the display device due to partial peeling of the photoresist, and can also greatly improve the problem that the uneven bright and dark lines generated by the defective photoresist lead to an overestimation of the number of photoresist defects by the inspection machine.

The embodiments of the present application relate to the technical field of electronics. Provided are a driving circuit and a driving method therefor, and a display panel, a display module and an electronic device. The driving circuit comprises first shift registers and third shift registers, which are under partition control, and a second shift register, which is added at a partition position. A signal outputted by the second shift register only serves as a starting signal of a first-stage third shift register, and is not outputted as a scan signal. Even if the signal outputted by the second shift register is different from a signal outputted by a last-stage first shift register, the display is not affected. After a second gate starting signal is shaped and shifted by the second shift register and the first-stage third shift register, a signal outputted by the first-stage third shift register is restored to normal. In this way, when an electronic device having a partition display function performs full-screen display, the brightness difference between display rows at a partition position is significantly reduced, thereby ameliorating the problem of bright lines or dark lines appearing in a display picture.

Disclosed is a photography panel light (10), comprising at least two panel light modules (100). Each panel light module (100) comprises a light panel (110) and multiple light-emitting units (120) arranged in an array on the light panel (110). The multiple light-emitting units (120) are distributed at intervals in a first direction, and the spacing between every two adjacent light-emitting units (120) in the first direction is a first spacing. Two adjacent panel light modules (100) are mutually connected in the first direction to form a first connection region (210), and the spacing between every two adjacent light-emitting units (120) located on two sides of the first connection region (210) in the first direction is equal to the first spacing. In any two mutually connected panel light modules (100), the spacing between every two adjacent light-emitting units (120) located on two sides of the connection region is enabled to be consistent with the spacing between every two adjacent light-emitting units (120) of any panel light module (100), so that no bright or dark line is present on an illumination surface formed by light projected by the assembled photography panel light (10), and the integrity of the illumination surface is high. Therefore, the photography panel light (10) can effectively ensure the illumination effect and meet the photographing and imaging requirements.

The application discloses a display device and a display method thereof. The display device comprises sub-pixels of multiple color types, and the light-emitting colors of the sub-pixels of different color types are different. The display method comprises the following steps: acquiring the segment number of a first type display gray scale, the continuous column number of each segment and the column position of each segment in a pixel row to be compensated; acquiring the continuous row number of the pixel row displaying the first type display gray scale according to the segment number, the continuous column number of each segment and the column position of each segment; determining the gray scale compensation value of the sub-pixel of a second type display gray scale in the pixel row to be compensated according to the segment number, the continuous row number, the total column number of the first type display gray scale in the pixel row to be compensated and the row position of the pixel row to be compensated; and compensating the gray scale of the sub-pixel by using the gray scale compensation value corresponding to the sub-pixel; wherein the gray scale difference between the first type display gray scale and the second type display gray scale is greater than a first preset value. The application can improve the problem of unexpected bright lines and dark lines in the display device during display.

The application belongs to the technical field of LED display screens, and provides an LED display module inter bright-dark line correction method and an LED display screen. The LED display module inter bright-dark line correction method comprises the following steps: preparing a first LED display module, determining a first distance L1 between a first side of the first LED display module and the center of an adjacent first LED lamp bead and a second distance L2 between the centers of two adjacent rows of first LED lamp beads, and determining a first width value W1 of a first joint gap formed when two first LED display modules are spliced in a first direction; a second LED display module is prepared by the same process, the position of a second solder pad on the second LED display module is corrected according to the above parameters, and the finally prepared second LED display module is not prone to bright-dark lines at the joint gap.

The present application discloses a display module and a display device, wherein the display module includes a light-emitting unit and a driving circuit, wherein the driving circuit includes a controller, a control chip, a detection module and a compensation feedback module, wherein the output end of the control chip includes a plurality of output channels, each of which is connected in series with a row of lamp beads, wherein the detection module is connected to the plurality of output channels, receives the driving current output by the controller, and detects whether the lamp beads in the light-emitting unit are abnormal; wherein the compensation feedback module is connected to the detection module and the controller, and when the detection module detects an abnormal lamp bead, the compensation feedback module notifies the controller to turn off or reduce the driving current of the output channel corresponding to the abnormal lamp bead, and at the same time increases the driving current of the output channel corresponding to the row of lamp beads adjacent to the abnormal lamp bead. Through the above design, the display problem of dark spots or dark lines that occurs when the LED is abnormal can be improved.

The invention belongs to the technical field of electric power distribution line inspection, and provides an insulator crack-light spot distinguishing method and system.In high-altitude unmanned aerial vehicle inspection, through closed track planning and three-gear exposure synchronous shooting in cooperation with a double-branch detection network, chain type geometric topology constraint and one-dimensional multi-flow graph convolution, the insulator crack-light spot distinguishing method and system are obtained; the method comprises the following steps: firstly, accessing a double-branch detection network by using highlight / dark fringe double-branch lightweight convolution to realize candidate crack detection; according to geometric matching, a candidate frame is aligned with a disc edge, three-exposure local parts are cut, and multi-dimensional features are extracted; after a highlight channel is attenuated by using a saturation mark, assembling features into a chain graph according to a physical sequence, and capturing cross-disk coherent dark fringes; and finally, the full connection layer outputs the crack probability, mirror reflection suppression and real crack suppression are realized, false alarm and missing alarm are effectively reduced, and an accurate basis is provided for a power failure maintenance decision.