8689 results about "Liquid-crystal display" patented technology

The invention relates to the field of display screen pixel calibration, in particular to a pixel calibration method and system of a high-precision liquid crystal display screen. The method comprises the following steps: acquiring a real-time playing animation image of a high-precision liquid crystal display screen based on an internal sensor of the display screen; carrying out image scene distortion feature mining on the real-time playing animation image so as to obtain a comprehensive scene distortion feature; performing frame-by-frame pixel optical tracking on the real-time playing animation image, and performing frame-by-frame rolling offset vector calculation so as to construct a pixel point time sequence offset trajectory diagram; carrying out regional dynamic optical flow estimation on the pixel point time sequence offset trajectory diagram, carrying out dynamic trajectory distortion modeling based on comprehensive scene distortion characteristics, and constructing a pixel point offset trajectory distortion model; and carrying out dynamic color change perception on the pixel point offset track distortion model so as to generate a self-adaptive pixel point track offset compensation value. According to the invention, efficient and accurate pixel calibration is realized, and the dynamic visual effect is improved.

The invention provides an adjustable spectrum-based liquid crystal display system and a control method thereof, relates to the technical field of display systems, and aims to overcome the limitations of poor environmental adaptability, easiness in causing visual fatigue, single user experience and the like of an existing display. The system creatively integrates a liquid crystal panel, a high-precision multi-main-color Micro-LED backlight, a pixel inner sensing array, an external multi-mode sensing module, a dynamic addressable micro-optical array, a dynamic polarization modulation layer and an optional transparent energy collection layer. The intelligent controller carries out fusion processing on the real-time biological state, environment information and application context data of the user obtained by the multi-source sensor, and carries out accurate state evaluation and future trend prediction. And determining an optimal space-time-direction-spectrum-polarized light field output characteristic and an intelligent energy management strategy through a multi-objective optimization decision engine, and driving each optical regulation and control component to execute in real time. The visual comfort and health level are remarkably improved, and the information fidelity and task performance in a complex environment are ensured.

The invention discloses a liquid crystal display screen defect detection method, and relates to the technical field of liquid crystal display screen defect detection.A bidirectional polarization transmission structure light source is adopted to project 0-degree and 90-degree polarized light, interference of parasitic reflection on defect detection is reduced, and a self-adaptive exposure control unit is introduced; exposure parameters are adjusted in real time according to the light transmittance and reflection characteristics of the glass substrate, the imaging quality is optimized, and the detection effect is prevented from being affected by overexposure or underexposure; in the image processing stage, parasitic reflection information is extracted by combining a polarization difference algorithm of double-frame subtraction, high-frequency interference is removed by using fast Fourier transform (FFT), an optimized defect image after parasitic reflection suppression is obtained, real defect information is more prominent, and the defect contrast is improved; multi-scale Gaussian fitting filtering, a gradient lifting method and super-resolution reconstruction are adopted to enhance defect features in the image, so that a low-contrast defect area is easier to identify.

The invention relates to the field of liquid crystal display, and discloses a liquid crystal display screen dynamic contrast optimization method and system, and the method comprises the following steps: collecting ambient light intensity and backlight module temperature parameters in real time, and combining with image content entropy analysis to dynamically generate a non-uniform backlight partition grid; a brightness diffusion physical model is constructed based on hardware parameters such as the refractive index of the light guide plate and the LED spacing, and the optimal brightness of each partition is solved by adopting a temperature self-adaptive improved particle swarm algorithm; driving voltage is generated through piecewise nonlinear gamma mapping and inverse function iterative calculation, and the driving voltage is adapted to the nonlinear response characteristics of the backlight module; a hardware accelerator is used for executing a diffusion equation and optimization calculation in parallel, and model parameters are dynamically adjusted in combination with feedback of an optical sensor, so that a closed-loop control link is formed. According to the method, the contrast performance and the dynamic scene adaptability of the display screen are comprehensively improved through dynamic partition adaptive to the environment, an optimization algorithm driven by a physical model and real-time processing accelerated by hardware.

The invention provides a liquid crystal display drive control method and system, and the method comprises the steps: obtaining a page loaded in a memory of a liquid crystal computer, calculating the maximum image motion degree of the page loaded in the memory of the liquid crystal computer through the difference between continuous frames, and adjusting the refresh rate of a liquid crystal display screen; acquiring a fixation point position and fixation time of the user through an eye movement tracking technology, and adjusting the brightness of the liquid crystal display screen according to the fixation point position and the fixation time of the user; predicting future display contents and user behaviors by using a machine learning algorithm in combination with the use habits of the user and historical data of the display, and adjusting the brightness and refresh rate of the display based on a prediction result; the energy consumption data of the display are recorded in real time, the actual energy consumption and the expected energy consumption are compared and analyzed, and abnormity is found in time and feedback adjustment is carried out. Through the method and the corresponding system, the use energy consumption of the liquid crystal screen can be saved under the condition that the user experience is not influenced.

The invention relates to the technical field of liquid crystal display, and discloses an intelligent driving method and system for a liquid crystal display screen, and the method comprises the following steps: S1, collecting environment, content and user behavior information, and constructing a multi-modal fusion feature vector; s2, extracting features by using a physical enhanced neural network, and generating visual importance mapping in combination with a liquid crystal response model; s3, dividing a display area based on visual importance and a content change rate, and calculating a refresh priority and a refresh rate; s4, determining an optimal driving parameter in combination with a multi-objective optimization model; s5, executing driving control and collecting response data; and S6, updating the liquid crystal health map and network parameters to realize closed-loop optimization. According to the method, a multi-modal perception and fusion feature vector construction technology is adopted, environment information, display content information and user behavior data can be comprehensively collected, and high-dimensional feature vectors are generated by reasonably fusing the information.

The invention relates to the technical field of display methods of electronic displays, in particular to a display optimization method and system for a liquid crystal display screen. The method comprises the following steps: acquiring current image frame data and previous image frame data, and calculating an inter-frame difference based on a preset pixel difference threshold; performing threshold judgment based on the inter-frame difference data to obtain motion area data; calculating a gray scale change rate according to the motion area data; performing threshold interception on the gray scale change rate data to obtain response optimization target area data and non-target area data; and performing continuity evaluation on the response optimization target area data, and performing merging processing based on a continuity evaluation result to obtain a continuous rectangular target area group. According to the invention, the dynamic optimization of the liquid crystal display screen is realized by accurately identifying the motion area and carrying out gray scale change calculation, temperature adaptation adjustment and pulse width modulation, and the definition and the display effect of a motion picture are improved.

The invention provides a self-adaptive color depth optimization method for a liquid crystal display screen, which comprises the following steps of: acquiring manual adjustment operations of a user on brightness, contrast and color parameters of the liquid crystal display screen in different use scenes to form a user preference data set; according to the user preference data set, a data classification method is adopted to classify manual adjustment operations in different use scenes, and features of ambient light and content types are extracted to determine preference feature distribution of a user in a specific scene, and a personalized color preference model is constructed; preliminary calibration is carried out in combination with a dynamic balance algorithm, and display parameters are optimized through a continuous learning mechanism and secondary calibration. The problem that in the prior art, color adjustment of a liquid crystal display screen lacks individuation and scene self-adaption capacity is solved, continuous self-adaption of the display effect is achieved, manual intervention of a user is reduced, and the individuation degree and comfort degree of visual experience are improved.

The invention relates to the technical field of data processing and optimization, in particular to a liquid crystal display screen display optimization method and system. The method comprises the following steps: acquiring display data of a liquid crystal display screen by using a sensor to obtain the display data of the liquid crystal display screen; preprocessing the display data of the liquid crystal display screen to obtain standard display data of the liquid crystal display screen; performing multi-dimensional feature recognition on the display data of the standard liquid crystal display screen to obtain multi-dimensional display feature data; performing key display information extraction on the multi-dimensional display feature data to obtain key display information; according to the invention, through a data processing technology, an image identification technology and an intelligent regulation and control technology, a specific environment condition is analyzed so as to obtain an abnormal display condition of the liquid crystal display screen caused by environmental influence; and dynamic display optimization adjustment is carried out on abnormal display conditions of the liquid crystal display screen, so that the display effect of the liquid crystal display screen is improved.

The invention relates to the technical field of display screen detection, in particular to a liquid crystal display screen module performance detection method and system, and the method comprises the steps: collecting an image sequence of pure color pictures displayed by a display screen module at a full brightness level, and obtaining a screen display image of each pure color picture according to the image sequence; extracting a feature vector of the screen display image, performing feature analysis on the screen display image according to the feature vector, obtaining an abnormal point of each display pure color picture, and recording a spatial position and a deviation direction of the abnormal point; if at least one display pure color picture has the abnormal point, performing secondary judgment on the abnormal point by combining the spatial continuity and time stability characteristics of the adjacent frame of the abnormal point, and obtaining the abnormal type of the abnormal point; and generating an anomaly detection report of the display screen module. According to the method, the accuracy and robustness of detection are improved, misjudgment and missing detection can be effectively reduced, and the quality control level of the liquid crystal display screen module is remarkably improved.

The embodiment of the invention belongs to the technology of display equipment, and provides liquid crystal display equipment based on field sequential display and a color image display method thereof.The liquid crystal display equipment comprises a liquid crystal display screen, a backlight module and a processor, the liquid crystal display screen is divided into a plurality of backlight partitions used for displaying images, and the backlight module is used for emitting backlight; the backlight is used for adjusting the backlight brightness of the display image corresponding to the four-field sequence. And the processor is used for acquiring RGBW image pixel data of the image in the backlight partition, and acquiring backlight brightness data corresponding to the RGBW color based on a preset backlight extraction algorithm according to the RGBW image pixel data. And the processor is also used for determining image compensation pixel data corresponding to the RGBW color based on a preset pixel compensation algorithm and the backlight brightness data corresponding to the RGBW color. And the liquid crystal display screen is used for displaying a color image according to the image compensation pixel data corresponding to the RGBW color. The power consumption of the display equipment is reduced, and the user experience is improved.

The invention belongs to the technical field of display screen detection, and particularly relates to a liquid crystal display screen surface defect detection device which comprises a main body assembly, the main body assembly comprises a machining table assembly, a lifting assembly is arranged below the machining table assembly, and an inclined assembly is arranged in the machining table assembly. A rotating assembly is arranged in an inner cavity of the inclining assembly. And the detection assembly comprises a regulation and control assembly arranged above the machining table assembly, a shooting assembly is arranged below the regulation and control assembly, and a switching assembly is arranged at the bottom of the shooting assembly. According to the device, automatic feeding and discharging of the display screen can be achieved during detection, in the display screen detection process, the display screen is controlled to incline or turn over, the inclination angle of the display screen is adjusted at will according to requirements, the detection accuracy and comprehensiveness are improved, the irradiation part and angle of the display screen can be continuously adjusted, and the detection efficiency is improved. And light sources irradiating different spectrums are adjusted according to requirements so as to deal with tiny damages of types.

The invention relates to the technical field of screen quality detection, and discloses a dead pixel detection method, system and device for a liquid crystal display screen and a storage medium, and the method comprises the steps: obtaining the pixel distribution information of a to-be-detected display screen, and marking the corresponding pixel coordinates of each pixel point based on the pixel distribution information; after the detection signal is received, pixel points of the display screen to be detected are divided into a plurality of pixel blocks based on the pixel coordinates, and each pixel block is marked with a block identifier; based on the pixel coordinates and the block identifiers, determining block coordinates of each pixel point, dividing each pixel point into a plurality of pixel groups based on the block coordinates, and marking group identifiers for each pixel group; setting a detection sequence based on the group identifier of each pixel group, and controlling each pixel group to display a preset detection image group one by one based on the detection sequence; obtaining display effect images of the display screen to be detected one by one and inputting the display effect images to a preset image dead pixel recognition model to generate dead pixel detection result information; the method has the effect of improving the dead pixel detection efficiency of the liquid crystal display screen.

The invention discloses a defect detection method for a high-reflection battery aluminum shell, which comprises the following steps of: generating sine stripes required by a light source by using computer coding, respectively projecting the sine stripes in x and y directions to the surface of the aluminum shell to be detected through an LCD (Liquid Crystal Display) screen, and acquiring 16 deformed stripe patterns by using a CCD (Charge Coupled Device) camera; drawing a gray value curve of the stripe pattern to obtain a minimum enclosing rectangle of an area where the surface of the to-be-detected aluminum shell is located, and extracting all the surface of the to-be-detected aluminum shell; performing phase extraction and unwrapping on the extracted deformed stripes on the surface of the to-be-detected aluminum shell by using a multi-frequency heterodyne method to obtain a matrix containing phase information in x and y directions; according to the positions of pixel points which are suddenly changed in the phase information, a reflectivity model is used for estimating defect information of the surface of the aluminum shell to be detected, a reflectivity defect graph is generated, gradient information is calculated according to the phase information, and a curvature graph is obtained according to the gradient information and the curvature relation to obtain a clear defect picture.

The invention relates to the technical field of display screen detection, and discloses a liquid crystal display screen color difference detection system and method.The system comprises a multispectral imaging module, a curved surface deformation modeling module, a coupling tensor decomposition module, a biological excitation feature extraction module, a dynamic compensation control module and a technological parameter interface module; the method comprises the following steps of synchronously collecting a multispectral image and screen deformation data, constructing and decomposing a multidimensional tensor containing geometric constraints, extracting biological excitation visual features, and generating and applying voltage compensation through model prediction control so as to dynamically correct the color difference of the flexible screen. According to the method, through multispectral and geometry synchronous perception, multidimensional tensor constraint decomposition, biological excitation and deformable convolution feature extraction, time-varying model prediction control and dynamic weight adjustment of fused manufacturing parameters, high-precision capture and personalized compensation of the dynamic chromatic aberration of the flexible screen are realized. The defects of dynamic perception, quick response and individual adaptability are overcome.

The invention relates to the technical field of display screens, in particular to a liquid crystal display screen backlight local dimming method and device, a terminal and a medium. Comprising the steps of obtaining brightness and color distribution data of a display picture; calculating a target brightness value of each backlight block through the dimming algorithm module based on a dynamic partition control strategy and a preset brightness mapping model; wherein the dynamic partition control strategy is used for dividing adjacent backlight blocks into dynamic dimming groups according to brightness characteristics of a picture area on the premise that the number of the backlight blocks is not increased; the backlight control device drives an LED backlight block of the backlight module according to the target brightness value; and monitoring a display effect in real time, and adjusting parameters of the brightness mapping model based on feedback. According to the invention, the problems of cost increase and related derivation caused by increase of the number of partitions in the prior art can be solved.

The present application proposes a liquid crystal display panel and a liquid crystal display, wherein the liquid crystal display panel comprises: an array substrate; a color film substrate, which is arranged in a box with the array substrate; a glue frame, which adheres the color film substrate and the array substrate to form a box body space, and in the cross-sectional direction of the liquid crystal panel, the width of the glue frame gradually increases from one side of the color film substrate to one side of the array substrate; and a liquid crystal layer, which is arranged in the box body space. The liquid crystal display panel and the liquid crystal display proposed in the present application can improve the quality of the liquid crystal display panel.

The invention relates to a burning system, in particular to a liquid crystal display burning device which comprises a control module, a storage module, a burning interface module, a verification module, a monitoring module and a communication module. The control module comprises an embedded microcontroller and is used for receiving and analyzing a burning instruction and distributing the instruction to the related modules; the storage module is composed of an EEPROM and a high-speed RAM and used for storing a burning program and temporary data. The burning interface module comprises a plurality of hardware driving circuits supporting I2C, SPI and UART interfaces and is used for being physically connected with the liquid crystal display screen and executing data burning; the verification module consists of a CRC (Cyclic Redundancy Check) processor and a logic control circuit and is used for verifying the integrity of burnt data in real time; the monitoring module integrates a plurality of state detection sensors and an exception handling unit, and is used for monitoring the working state in the burning process and providing an alarm signal; the communication module is composed of a wireless transmission chip and a wired communication interface and is used for remote monitoring and log uploading.

The invention relates to the technical field of liquid crystal display, in particular to a menu generation method and system based on a liquid crystal screen. The method comprises the following steps: acquiring equipment hardware parameters and system resource data; performing equipment capability evaluation according to the equipment hardware parameters and the system resource data, and generating equipment performance index data; performing multi-dimensional equipment characteristic analysis according to the equipment performance index data to obtain equipment characteristic vector data; performing equipment type matching according to a preset equipment mode library and the equipment characteristic vector data to obtain equipment prototype mode data; performing adaptive menu complexity division according to the equipment prototype mode data to generate menu complexity grade data; and performing responsive layout calculation according to the screen size and resolution information in the equipment hardware parameters, and generating adaptive layout template data. According to the method, the complexity and layout of the menu can be automatically adjusted according to hardware parameters and system resources of the equipment, and the optimal performance on various kinds of equipment is ensured.

The invention discloses a liquid crystal display screen efficient refresh rate control method and system and a medium, and relates to the technical field of display screen control. The method comprises the steps of obtaining a display state of a display screen; constructing cascade refreshing logic and deploying a driving controller; the method comprises the following steps: carrying out first-order display partitioning in a display mode, carrying out second-order display partitioning in a mode plate, matching a distributed refresh rate interval and writing the interval into a register, determining a real-time refresh rate by taking the distributed refresh rate interval as a constraint according to interface dynamics, and generating a vertical synchronizing signal by taking a necessary pixel region as a refreshing target. And writing the vertical synchronizing signal into a register, and performing display state refreshing control on the display screen. The technical problems that in the prior art, control over the refresh rate of a liquid crystal display screen is not flexible, the refresh rate cannot be accurately adjusted according to different display states and interface dynamics, energy consumption is high, and the display effect is poor are solved, the refresh rate is adjusted in a self-adaptive mode according to the interface dynamics, and the technical effect of reducing energy consumption while the display performance is guaranteed is achieved.

The invention discloses a liquid crystal display screen gray scale control method based on adaptive brightness compensation, which relates to the technical field of liquid crystal display screen control, and comprises the following steps: collecting environmental spectrum distribution information and a pixel gray scale voltage response curve of a liquid crystal display screen in real time, and carrying out fusion processing to form a time sequence joint feature vector; through multi-mode synchronous sampling and time sequence joint feature vector generation, ambient light and screen content changes are accurately captured, target adjustment values of backlight power and gray scale voltage are dynamically predicted, and response lag and overshoot are avoided. Through spectral domain balancing and a self-adaptive damping scheduling mechanism, cooperative control of backlight and gray scale is optimized, high-frequency oscillation is suppressed, and linear response of a low-frequency band is ensured. Meanwhile, Gamma mapping and global color gamut calibration are dynamically refreshed, accurate adjustment of area-level brightness and gray scale is achieved, and continuity of the display effect and visual experience of a user are improved.

The invention relates to the technical field of liquid crystal display, in particular to a liquid crystal display driving control method and system. Comprising the following steps: SS01, multi-modal sensing and state triggering: fusing a user distance, a fixation point coordinate and ambient light illumination in real time by using an integrated sensor, and triggering an eye protection mode or a self-adaptive sleep mechanism according to the user distance, the fixation point coordinate and the ambient light illumination, SS02, image partitioning and strategy generation: dividing a screen into N * M partitions, and SS03, distinguishing a dynamic region from a static region according to the brightness histogram and the motion vector of each partition, and outputting differentiated refresh rates and backlight strategies, and SS03, performing big data learning and model optimization, and collecting user behaviors. The system has the advantages that the infrared proximity sensor, the eyeball tracking sensor, the distance sensor and the ambient light sensor are integrated through the multi-mode sensing and state triggering module, multi-dimensional data such as user distance, fixation point coordinates and ambient light illuminance are fused in real time, and active intelligent sensing of the user state and the environment is achieved.

A wall-mounted audio device is provided, including: a display component; a wall-mounted box body, wherein a front panel is provided with a rim region and a display region; the display component is arranged in the display region; a rear panel of the wall-mounted box body is provided with a wall connector; a speaker module, arranged inside the wall-mounted box body a sound output end of the speaker module faces the sound outlet hole; and an mesh. The mesh is detachably connected to the front panel of the wall-mounted box body. The display component is a liquid crystal display screen. The speaker module includes a speaker module housing and one or more transducers designed on the speaker module housing. The speaker module housing is provided with a bass enhancement port. The rear panel of the wall-mounted box body is provided with a wire receiving slot.

The invention discloses a pipe fitting cutting device for liquid crystal display screen machining, and relates to the technical field of pipe fitting cutting, the pipe fitting cutting device comprises a rack, and further comprises a pipe fitting clamping and rotating mechanism, a rotating ring rotating control mechanism, a pipe fitting front-back driving mechanism and a pipe fitting opposite-direction cutting mechanism, and the pipe fitting clamping and rotating mechanism comprises two front-back corresponding supporting rings; the bottom of the supporting ring on the front side is installed on the upper side of the rear end of the rack, the two supporting rings are connected through a supporting ring distance adjusting telescopic rod piece, each supporting ring is provided with a ring center clamping execution assembly, and the ring center clamping execution assemblies are connected with ring center clamping transmission assemblies. The rotating ring rotation control mechanism is connected with the ring center clamping transmission assembly; when the pipe fitting cutting device for liquid crystal display screen machining works, the cutting depth is only the thickness of the pipe wall of the pipe fitting to be cut, abrasion of the circular cutter can be effectively reduced, the cutter is prevented from being clamped or even damaged, and meanwhile the cutting face of the pipe fitting is smooth.

The invention discloses a backlight control method, display equipment and a computer readable storage medium, and relates to the technical field of liquid crystal display, the backlight control method is applied to a backlight system, the backlight system comprises an LED backlight source, the LED backlight source comprises a three-primary-color light-emitting source and a white light-emitting source, and the method comprises the steps of obtaining a to-be-displayed target image, determining a three-primary-color backlight gray value of the three-primary-color light emitting source based on the target image; a white backlight gray value is determined based on the three-primary-color backlight gray value, and the white backlight gray value is in positive correlation with the three-primary-color backlight gray value; and driving the three-primary-color light-emitting source to emit light based on the three-primary-color backlight gray value, and driving the white light-emitting source to emit light based on the white light-emitting source, so that the LED backlight source provides backlight. The light emitting efficiency of the backlight source is improved, and the brightness and the color gamut are considered on the basis of low energy consumption.

The invention provides a low-chromatic-aberration transparent display device in order to solve the problem that chromatic aberration easily occurs in polarization modulation stereoscopic display adopting a 1 / 4 wave plate. The low-color-difference transparent display device comprises a directional polarization light source, a reflector and a transparent liquid crystal display panel. The pixels on the upper portion of the 2D display panel are lightened in a time-division multiplexing mode and any time slice slot, light rays of the pixels are projected through the lens array and then reflected through the reflector, the polarization direction of the light rays is adjusted, and then the light rays penetrate through the transparent liquid crystal display panel to form viewpoints. The transparent liquid crystal display panel synchronously provides a parallax image corresponding to the viewpoint position. The sub-pixel value of any one lightened pixel on the 2D display panel is modulated to be a fixed value related to the included angle of the lens, so that colored light generated by the pixel is restored to be white light after being polarized by the polarizer, the polarization direction is adjusted by the 1 / 4 wave plate and the polarization of the analyzer. At the moment, a directional light source without chromatic aberration is provided for the transparent liquid crystal display panel, so that chromatic aberration introduced by the polaroid and the wave plate is reduced.

The invention discloses an intelligent switch cabinet operation state monitoring method and system, and relates to the technical field of switch cabinet monitoring, and the method comprises the following steps: installing a sensor node on a switch cabinet, collecting the state information value of the switch cabinet through the sensor node, and judging the single state information value; establishing a total judgment model, uniformly transmitting the judgment result and the state information value to the total judgment model, and judging the operation state of the switch cabinet through the total judgment model; and the judgment result is output to the LCD liquid crystal display for personnel observation. According to the method, the detected single state information value is judged through the sensor node, the fault reason can be obtained according to the judgment result, and the fault reason can be further proved through judgment in combination with a judgment mode, so that a worker can conveniently overhaul the fault in time, and meanwhile, the effect of data detection can also be achieved; and the sensor nodes are prevented from not detecting data.

The invention provides a liquid crystal display backlight control method and system based on intelligent dimming. The method comprises the steps of obtaining a standard RGB three-channel image of a liquid crystal display and converting the standard RGB three-channel image into a brightness graph; collecting the current environment illumination intensity, and generating a target brightness intention map of the liquid crystal display backlight system by combining the brightness map and the structure attention map; performing time sequence smoothing processing on the target brightness intention map to generate a smooth brightness map; the liquid crystal display is divided into M backlight areas, the brightness mean value of each area is obtained, and the backlight power consumption estimated value of the current frame is calculated by combining the smooth brightness map; carrying out amplitude limiting on the brightness map based on a prediction result to prevent overheating caused by continuous high-power operation of backlight, and generating an amplitude limiting brightness map based on thermal trend prediction; and converting the amplitude limiting brightness diagram based on the thermal trend prediction into a PWM control signal capable of driving a backlight module of a liquid crystal display, wherein the PWM control signal is used for actual backlight adjustment execution.

The invention discloses an improved liquid crystal display screen secondary cutting and trimming process, and particularly relates to the technical field of liquid crystal display screen processing, which comprises the following steps: SS1, light profile scanning and pre-cutting planning, SS2, precise cutting of an upper polaroid, SS3, flexible fitting and pre-pressing treatment, SS4, integration of an IC (integrated circuit) and an FPC (flexible printed circuit), and formation of pre-cut liquid crystal display FOG (field optical glass) and SS5, high-precision laser cutting and splitting treatment. SS6, laser welding and sealing treatment, SS7, lower polaroid attaching and curing treatment, and SS8, power-on aging and backlight assembly are carried out. By introducing the technologies of laser scanning and planning, automatic precise cutting and flexible fitting, laser welding and sealing treatment and the like, the cutting precision, edge quality and production efficiency of the liquid crystal display screen are remarkably improved, meanwhile, the production cost is reduced, the stability of the production process and the reliability of the product quality are enhanced, and the production efficiency of the liquid crystal display screen is improved. And obvious advantages are brought to the field of liquid crystal display screen manufacturing.

The invention discloses a color temperature correction method and device of a liquid crystal display system and a storage medium. The method comprises the following steps: determining tristimulus values of original white pixel points of the system in a CIE 1931XYZ color space according to normalized spectral power distribution of a white light backlight source of the liquid crystal display system and a transmittance spectrum of a three-primary color filter of a color film; determining a target RGB color space and a target color temperature, and constructing a color space conversion matrix from the target color space to an XYZ color space; converting the tristimulus values of the original white pixel points of the system in the XYZ color space into the three-primary color channel values of the target white pixel points under the target color temperature in the target color space by using the inverse matrix of the color space conversion matrix; and driving the system to display white according to the three-primary color channel value of the target white pixel point. According to the scheme, the color temperature correction of the liquid crystal display system is realized through a method of combining measurement and theoretical calculation, and the color temperature correction efficiency is improved.