54 results about "Dark line" patented technology

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.

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 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 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.

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 time schedule controller and at least one driving module, and the driving module comprises a polarity partition control unit, a picture detection unit, a refresh rate detection unit and a reversal interval control unit; the refresh rate detection unit is used for detecting the refresh rate of the display partition, the reversal interval control unit is connected with the time schedule controller, the picture detection unit and the refresh rate detection unit, and when the refresh rate of the display partition is high, the reversal interval control unit reduces the frequency of the first polarity reversal control signal, the power consumption of the driving module is reduced while the bright and dark lines are improved or eliminated, the frequency of the first polarity inversion control signal is increased by the inversion interval control unit when the refresh rate of the display partition is relatively low, the risk of polarization of liquid crystal molecules is reduced while the bright and dark lines are improved or eliminated, and the display effect of the display panel is improved.

The application relates to a breakpoint repair circuit, method, device, equipment and medium of a display panel, wherein the method comprises the following steps: accessing a repair line when detecting that a breakpoint of the display panel occurs; adjusting the signal gain of the signal entering the repair line through a gain circuit, wherein the gain circuit is arranged on a circuit board outside the display panel; accessing a high-pass filtering link in the repair line, and compensating the signal attenuation on the repair line through the high-pass filtering link. By introducing the gain circuit to adjust the signal gain on the repair line, and compensating the signal attenuation on the repair line through the high-pass filtering link, the phenomenon of uneven brightness of the repaired section that may occur is inhibited, and the problem that the overall dark line of the repaired section still occurs after the breakpoint repair through the repair line is solved.

The embodiment of the invention provides a display panel and a splicing display device, relates to the technical field of display, and is used for weakening dark fringes at splicing seams and improving the display effect. The display panel comprises a substrate, a first electrode layer, a pixel defining layer, a light-emitting function layer, a second electrode layer, a first packaging layer and a second packaging layer. The first electrode layer includes a first electrode. The pixel defining layer is provided with a pixel opening. The light-emitting functional layer comprises a light-emitting part, and the light-emitting part is at least partially located in the pixel opening and makes contact with the first electrode. And a light-emitting device is formed at the overlapped part of orthographic projections of the second electrode layer, the light-emitting part and the first electrode on the substrate. The first packaging layer defines a plurality of packaging areas, the light-emitting parts are located in the packaging areas, and the light-emitting parts corresponding to the light-emitting devices in at most one pixel are arranged in the same packaging area. The second packaging layer is arranged on the side, away from the substrate, of the second electrode layer. The second packaging layer covers the packaging area. The display panel is used for displaying images.

According to the flexible resin plate provided by the invention, by reducing pigments or dyes in the photosensitive resin layer, adding pigments or dyes in the bonding layer and controlling color distribution in the plate material, a flexible printing plate with feature recognition colors can be easily obtained, meanwhile, the reduction condition of fine lattice points on the plate material is improved, the dark line depth is increased, and the printing quality is improved. The flexographic plate material with higher precision can be obtained, and in addition, the flexographic plate material has better binding power.

The application relates to a display panel and a repairing method thereof, and relates to the technical field of display screens. When scanning the gate lines one by one, the application can acquire the current value of the data driving circuit based on the preset data signal for simultaneously driving multiple data lines, and determine whether a fault occurs through the current value, further lock the gate line and / or the circuit related to the gate line where the fault occurs, and then automatically detect the gate line and / or the circuit related to the gate line where the fault occurs, and determine whether a fault occurs through the current value, so that the fault troubleshooting efficiency can be improved, and the repairing efficiency of the weak line or the dark line can be improved.

The application provides a display panel and a display device. The orthographic projection of a light-emitting control signal wire located in a transition area on a substrate is not overlapped with the orthographic projection of a data wire on the substrate, abnormality in the charging process of pixels in the same column and located in other rows is avoided, the display of the pixels in other rows is avoided from being affected, dark lines in the display panel are avoided, the display yield of the display panel is ensured, and the display effect of the display panel is improved.

The application discloses a track surface defect detection system based on computer vision and relates to the technical field of defect detection. Continuous images of a track surface after rain are collected, and adjacent frame brightness fluctuation change tracks are recorded synchronously. In a time advancing process, dark line appearance frequency and moving direction information are extracted to generate dynamic dark line initial identification. For the region corresponding to the dynamic dark line initial identification, the brightness change rhythm in the continuous images is compared frame by frame, and the region with periodic fluctuation characteristics is marked as a flow interference region. The application analyzes the continuous images of the track surface through the time dimension, extracts dynamic dark line characteristics and forms a hierarchical recognition path, realizes effective separation of water film disturbance and crack characteristics, improves defect detection stability, simultaneously strengthens stable texture through reverse convergence and edge information superposition, restores real crack characteristics, improves recognition accuracy and reduces the risk of missed detection.

The application discloses a pixel circuit, a display panel and a display device, relates to the technical field of display, and can improve the dark line defect caused by local electrode short circuit, improve display effect and display yield. The pixel circuit comprises: a first sub-circuit electrically connected with a first node, the first sub-circuit being used for electrically connecting a data signal line; a second sub-circuit electrically connected with a second node, the second sub-circuit being used for electrically connecting a first power supply line; a driving sub-circuit electrically connected with the first node, the second node and a third node, the third node being used for electrically connecting a first electrode of a light-emitting device, a second electrode of the light-emitting device being used for electrically connecting a common electrode; a reset sub-circuit comprising a protection unit and a reset unit, the protection unit being electrically connected with the reset unit, the protection unit being electrically connected with the third node, and the reset unit being used for electrically connecting a second power supply connection line; the protection unit comprises a resistor, and the resistivity of the protection unit is less than the resistivity of the second power supply connection line.

The application provides a light-emitting substrate and a display device. The light-emitting substrate comprises a back plate, a first light plate and a second light plate spliced on the back plate, a reflecting sheet connecting the first light plate and the second light plate, and a first concave lens and a second concave lens. The first light plate and the second light plate have a splicing seam therebetween. One end of the first concave lens is arranged at one end of the reflecting sheet close to the first light plate, and one end of the second concave lens is arranged at one end of the reflecting sheet close to the second light plate. Light emitted by the first light plate can be refracted on the first concave lens, then reflected on the reflecting sheet and shot to the upper side of the splicing seam. Light emitted by the second light plate can be refracted on the second concave lens, then reflected on the reflecting sheet and shot to the upper side of the splicing seam. Therefore, the light-emitting substrate can shoot the light emitted by the light plate to the upper side of the splicing seam by using the concave lens and the reflecting sheet, solve the problem of the dark line on the upper side of the splicing seam, and improve the picture quality.

The invention provides a display panel and a display device, relates to the technical field of display, and can avoid the problem of bright and dark lines of the display panel. A multiplexing unit of the display panel comprises a first multiplexing unit and a second multiplexing unit, the first multiplexing unit comprises first-class transistors and first multiplexing connecting lines, one data signal line is connected with one first-class transistor, and a first number of first-class transistors are connected with one first multiplexing connecting line; the second multiplexing unit comprises second-type transistors and second multiplexing connecting lines, one data signal line is connected with one second-type transistor, and a second number of second-type transistors are connected with one second multiplexing connecting line; the second number is smaller than the first number; the compensation units are located in the first peripheral area, one compensation unit is connected with one second multiplexing connecting line, and the compensation units enable the load connected with the second multiplexing unit to be the same as or approximately the same as the load connected with the first multiplexing unit.

The application discloses a display substrate, a preparation method thereof, a display panel and a display device, and relates to the technical field of display, and is used for improving the problem of dark lines appearing in a display picture and improving the display effect of the display panel. The display substrate comprises a substrate, a connecting lead layer, a semiconductor layer and a light shielding pattern. The connecting lead layer is arranged on the substrate and comprises a target connecting lead. The semiconductor layer is arranged on the side, away from the substrate, of the connecting lead layer and comprises a semiconductor pattern. The light shielding pattern is arranged on the side, away from the substrate, of the semiconductor layer. The target connecting lead comprises a target part. The orthogonal projection of the target part on the substrate is separated from the orthogonal projection of the semiconductor pattern on the substrate, and the orthogonal projection of the target part on the substrate at least partially overlaps with the orthogonal projection of the light shielding pattern on the substrate. The display substrate is applied to the display panel to display a picture of the display panel.

The invention discloses an electronic screen partition brightness self-adaptive energy-saving control algorithm, which relates to the technical field of video signal processing, and comprises the following steps: performing brightness domain unified processing on an input video frame, dividing partitions according to a screen, and constructing a partition logarithmic brightness histogram and cumulative distribution; extracting a partition high quantile and a full-screen reference quantile to generate a partition bright peak traction amount, and determining a dark part inflection point to generate a partition dark fringe conservation amount; based on the global brightness reference, the bright peak traction amount and the dark fringe conservation amount, generating a partition candidate light-emitting control amount, and performing neighborhood difference limitation to obtain a partition target light-emitting control amount; pixel compensation gains are generated during subarea brightness reduction; and constructing a time domain flicker hysteresis bandwidth amount, and executing hysteresis judgment and speed-limiting update to output partition light-emitting control amount and power consumption backspacing. High-brightness small target pressure darkness and bright part detail loss are restrained through bright peak quantile traction, the dark part level and the local contrast ratio are kept through dark fringe inflection point conservation, brightness jitter is reduced through adaptive hysteresis flash suppression, and responsiveness and the energy-saving effect are both considered.

The application 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 driving chips, a time sequence controller and at least one driving module. The driving module comprises a polarity partition control unit, a picture detection unit, a refresh rate detection unit and an inversion interval control unit. The refresh rate detection unit is used for detecting the refresh rate of a display partition. The inversion interval control unit is connected with the time sequence controller, the picture detection unit and the refresh rate detection unit. When the refresh rate of the display partition is high, the inversion interval control unit reduces the frequency of a first polarity inversion control signal, thereby improving or eliminating bright and dark lines and reducing the power consumption of the driving module. When the refresh rate of the display partition is low, the inversion interval control unit increases the frequency of the first polarity inversion control signal, thereby improving or eliminating bright and dark lines and reducing the risk of polarization of liquid crystal molecules, and improving the display effect of the display panel.

The application relates to a display screen light and dark line correction method and device, electronic equipment and a storage medium. The method performs self-calibration between a lamp plate and a camera on an external parameter conversion matrix according to first positions and second positions of a plurality of first lamp beads on a single lamp plate. The position of a second lamp bead at the edge of two adjacent lamp plates is obtained according to the self-calibrated external parameter conversion matrix. Since the position information of the plurality of lamp beads on the single lamp plate is used to obtain the external parameter conversion matrix, the denoising effect can be achieved, and the position error of the second lamp bead is reduced. The joint seam spacing at the edge of the two adjacent lamp plates is obtained according to the position of the second lamp bead, and the detection error of the joint seam spacing is reduced. The display screen is corrected according to the joint seam spacing, and the accuracy of the light and dark line correction is improved.

The present disclosure provides a display module, a display panel, a preparation method thereof, and a to-be-cut mother board. The to-be-cut mother board comprises a substrate, a wiring structure arranged on one side of the substrate, and a plurality of signal lines arranged in parallel in the part of the wiring structure located in the pad area. The pad area comprises a first area and a second area in the extension direction of the signal lines, the first area is located between the second area and the display area, the part of the signal lines located in the first area can be connected with an external circuit board, and the part of the signal lines located in the second area comprises a plurality of line segments arranged in insulation in the extension direction of the signal lines. The present disclosure can solve the problem of dark line defects.

The present application relates to the technical field of optical detection of material surface defects, and discloses a building decoration stone surface micro-crack detection method based on machine vision, comprising the following steps: S1: collecting a diffuse reference image, a low-angle oblique light image and a cross-polarization image for the same stone surface detection area at different times, and registering and brightness normalizing the three images to keep the same suspected linear area corresponding in the three images. The building decoration stone surface micro-crack detection method based on machine vision collects a diffuse reference image, a low-angle oblique light image and a cross-polarization image for the same stone surface area respectively, and establishes local texture complexity based on the diffuse reference image, and then forms a three-light-path response fingerprint containing a direction deviation amount, a one-sided shadow enhancement coefficient and a dark line retention coefficient for the same candidate linear area, so that the micro-crack judgment is simultaneously constrained by three aspects of information, i.e. natural texture, oblique light shadow and reflection elimination.

The application discloses an array substrate, a display panel and a preparation method thereof, and a display device, which are used for reducing the length of dark lines and improving the transmittance of a sub-pixel. The array substrate provided by the embodiment of the application comprises a first substrate, and a plurality of sub-pixels arranged in an array along a first direction and a second direction on one side of the first substrate; the first direction intersects the second direction; the sub-pixel comprises an electrode part, and the electrode part comprises a plurality of slits; the extension direction of the slit intersects the first direction and the second direction; the electrode part is divided into two slit regions arranged along the second direction; the slit region is divided into two sub-regions arranged along the positive direction of the first direction along the diagonal line of the slit region; the included angle between the extension direction of the slit in one of the two sub-regions and the positive direction of the first direction is greater than 0 and less than 90; and the included angle between the extension direction of the slit in the other of the two sub-regions and the positive direction of the first direction is greater than 90 and less than 180.

The invention provides an LED display screen splicing seam bright and dark line brightness correction method and system and a terminal, and the method comprises the steps: screening a plurality of target splicing seam LED lamp beads at one or more splicing seams, constructing a target splicing seam symmetric lamp pair and a reference splicing seam symmetric lamp pair, and carrying out the original measurement brightness of a plurality of LED lamp beads in a neighborhood lamp group of each splicing seam symmetric lamp pair, the interference compensation coefficient of each target splicing seam LED lamp bead is calculated, the lamp point correction coefficient of each target splicing seam LED lamp bead is calculated in combination with the target correction brightness of the target LED display screen, and a lamp point coefficient correction matrix of the target LED display screen is constructed, so that the display brightness of each target splicing seam LED lamp bead of the target LED display screen is corrected; brightness compensation is performed on the panel splicing seam area in a targeted manner, splicing seam bright and dark lines visible to naked eyes can be effectively eliminated, and the visual experience of a user is improved.

The application 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 driving chips, a time sequence controller and at least one driving module. The driving module comprises a polarity partition control unit, a picture detection unit, a pixel detection unit, a column direction inversion control unit and a row direction inversion control unit. The picture detection unit controls the working of the polarity partition control unit according to the crosstalk severity of the display partition of the display panel, to form a conventional polarity mode and a polarity symmetry mode. In the polarity symmetry mode, if the display picture is a non-full-pixel picture, the pixel detection unit controls the column direction inversion control unit, so that the polarity of every 2 rows of the display partition is inverted, to weaken or eliminate bright and dark lines. If the display picture is a full-pixel picture, the pixel detection unit controls the row direction inversion control unit, so that the polarity of every 2 columns of the data line of the display partition is inverted, to weaken or eliminate horizontal lines, and improve the display effect of the display panel and the display device.

This invention discloses a system for synchronous control of MiniLED display driving signals, relating to the field of display driving control technology. This invention can calculate stable setup time data and generate pre-start time data based on effective light-emitting window data and setup characteristic data of each display partition, enabling different display partitions to be established and released synchronously. Simultaneously, it maintains an optically silent state during the setup phase and outputs compensating light-emitting data to display partitions that fail to complete setup on time. This effectively reduces problems such as dark lines, flickering, regional brightness misalignment, and image tearing in virtual shooting, improving the synchronous display accuracy, image continuity, and engineering applicability of MiniLED display walls.

The present application relates to the technical field of multi-camera system, and discloses a multi-camera time synchronization method, device, equipment and storage medium, comprising: setting the refresh rate of screen display content and the frequency of screen PWM modulation wave, the frequency of PWM modulation wave is less than or equal to half of the refresh rate of screen display content; controlling multiple cameras to shoot dynamic screen, and selecting a group of photos with the same screen display content shot by different cameras; taking one of the cameras as a reference camera, and taking one of the dark lines in the photo shot by the reference camera as a reference position; comparing the dark line positions in the photos shot by other cameras with the reference position to obtain the pixel difference set of each camera; and adjusting the time of each camera to be synchronized with the time of the reference camera according to the pixel difference set of each camera. The present application converts the photo pixels into time statistics by using the dark lines generated on the screen during PWM dimming, has high alignment accuracy and low investment cost.

The application discloses a display panel, a signal detection method and a display device. The display panel comprises a sub-pixel, a first switch module and a detection module. The sub-pixel comprises a pixel circuit and a light-emitting module. The input end of the pixel circuit is electrically connected with a first power supply end. The light-emitting module and the first switch module are connected in series between the output end of the pixel circuit and a second power supply end. The input end of the detection module is electrically connected with the output end of the pixel circuit. One display frame of the display panel comprises a display stage and a detection stage. The detection module is used for detecting the signal of the output end of the pixel circuit in the detection stage. The first switch module is turned on in the display stage, and the first switch module is turned off in the detection stage. According to the embodiment of the application, the rolling dark line in the detection process of the detection chip can be eliminated, and the experience of the human eye when watching the screen body 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 time schedule controller and at least one driving module, the driving module comprises a polarity partition control unit, a picture detection unit, a pixel detection unit, a column direction reversal control unit and a row direction reversal control unit, the picture detection unit controls the polarity partition control unit to work according to the crosstalk severity of display partitions of the display panel to form a conventional polarity mode and a polarity symmetry mode, and in the polarity symmetry mode, if a display picture is a non-full-pixel picture, the pixel detection unit controls the column direction reversal control unit to reverse the column direction; performing polarity inversion on every two rows of the display subareas so as to weaken or eliminate bright and dark lines; if the display picture is a full-pixel picture, the pixel detection unit controls the row direction reversal control unit, so that polarity reversal is carried out on the data lines of the display subareas every two columns, transverse grains are weakened or eliminated, and the display effect of the display panel and the display effect of the display device are improved.

In a relatively high-resolution liquid crystal display device, when a broken source bus line is repaired, the present invention provides a liquid crystal display device in which, for example, a horizontal stripe pattern of 0 grayscale and intermediate grayscale is displayed, and the dark lines along the source bus line are difficult to see. [Solution] The liquid crystal display device 100 is configured such that the control circuit 150 adjusts the gradation values ​​for generating source signals supplied via the auxiliary wiring EW to the source bus line SB electrically connected to the auxiliary wiring EW to be gradation values ​​that do not fall below a first gradation value which is greater than the lowest gradation value, and / or adjusts them to be gradation values ​​that do not exceed a second gradation value which is less than the highest gradation value.