Electrode pattern design method of full-view VA liquid crystal display device

Abstract

The invention relates to the technical field of liquid crystal display, in particular to an electrode pattern design method of a full-view VA liquid crystal display device, which comprises the following steps of: dividing the liquid crystal display device into an upper layer electrode and a lower layer electrode, and independently setting an initial parameter of each layer of electrode; dividing a display area into a plurality of sub-areas, respectively determining initial parameters of an upper-layer electrode and a lower-layer electrode in each sub-area, and distributing parameter ranges in different sub-areas according to a gradient design principle so as to generate an initial electrode combination scheme; and performing electric field simulation on the initial electrode combination scheme. In the invention, the upper layer adopts a short line or micro-bending line electrode, the lower layer adopts a through long line or latticed electrode, and the length, width, spacing and interlayer relative position of the two layers of electrodes are distributed in a gradient manner; and ordered twisted arrangement of liquid crystal molecules in different directions is realized, so that the problems of low-view-angle pocking marks and uneven full-view-angle brightness are solved.

Description

Technical Field

[0001] This invention relates to the field of liquid crystal display technology, and in particular to an electrode pattern design method for a full-view VA liquid crystal display device. Background Technology

[0002] A liquid crystal display (LCD) device is a display device that uses the optical properties of liquid crystal molecules to display images. It mainly consists of a liquid crystal layer, pixel electrodes, and driving circuits. By applying voltage to the pixel electrodes, the alignment of liquid crystal molecules is controlled, thereby adjusting the light transmittance to achieve image display. This type of display device is widely used in devices such as televisions, monitors, laptops, and mobile terminals, and can display images from multiple viewing angles.

[0003] In existing technologies, a single-layer electrode design is typically used, which makes it impossible to precisely control the twisted arrangement of liquid crystal molecules in all directions through the electrode structure. This leads to the problem of electric field conflicts and the formation of pitting in the low-viewing-angle direction. Summary of the Invention

[0004] To overcome the above shortcomings, this invention provides an electrode pattern design method for a full-view VA liquid crystal display device, aiming to improve the problem of pitting easily occurring in the low-viewing-angle direction of traditional full-view VA liquid crystal display devices.

[0005] In a first aspect, the present invention provides the following technical solution: a method for designing electrode patterns for a full-view VA liquid crystal display device, comprising the following steps: The liquid crystal display device is divided into two layers: an upper electrode and a lower electrode, and the initial parameters of each electrode layer are set independently. The display area is divided into multiple sub-regions. The initial parameters of the upper and lower electrodes are determined in each sub-region. The parameter ranges are allocated in different sub-regions according to the gradient design principle to generate an initial electrode combination scheme. Electric field simulation was performed on the initial electrode combination scheme to obtain the arrangement state data of liquid crystal molecules in each direction; By combining simulation data with prototype verification results, the electrode parameters of each sub-region are adjusted through a closed-loop adaptive optimization mechanism. The final electrode design scheme is formed based on the closed-loop optimization results, and the scheme is applied to the prototype of the liquid crystal display device. At the same time, the initial parameters are updated based on the prototype verification results.

[0006] By adopting the above technical solution, the layered combination and gradient parameter allocation of the upper and lower electrodes of the liquid crystal display device are realized, so that the liquid crystal molecules can form an orderly twisted arrangement in both vertical and horizontal directions. This effectively avoids the electric field conflict problem in the low viewing angle direction, eliminates the pitting phenomenon, and optimizes the brightness distribution of each viewing angle, thereby improving the consistency of the display across the entire viewing angle.

[0007] Preferably, dividing the liquid crystal display device into two layers, an upper electrode and a lower electrode, includes: The upper electrode is designed by setting short or slightly curved electrodes within each display pixel area, and the electrode length, width and spacing are determined. The lower layer electrodes are designed, and through-line or grid-like electrodes are arranged in the corresponding display area. The electrode length, width, spacing and the interlayer relative position of the upper layer electrodes are determined. In each sub-display area, the length, width, and spacing parameters of the upper and lower electrodes are allocated according to the pixel arrangement within the display area, so that the electrode arrangement in each sub-region completely covers the display area and forms a continuous electric field.

[0008] Preferably, dividing the display area into multiple sub-regions includes: Based on the geometric dimensions and pixel arrangement of the display area, the display area is divided into several regular grid sub-regions, each sub-region covering one or more pixels; During the partitioning process, a fixed boundary spacing is set between adjacent sub-regions to maintain the independence of the sub-regions; Assign a unique identifier to each sub-region and record its location, size, and coordinates relative to the display area; Subregions are numbered and arranged vertically, horizontally, or diagonally to form a standardized subregion structure.

[0009] Preferably, the initial electrode assembly generation scheme includes: Record the initial parameters of the upper and lower electrodes in each sub-region, including length, width, spacing and arrangement angle; The upper and lower electrodes of each sub-region are combined in the order of sub-region numbering to form an initial electrode combination matrix; For each sub-region in the combination matrix, adjust the relative positions of the upper and lower electrodes according to the prescribed arrangement rules to ensure that the electrode pattern is completely covered within the sub-region. The sub-region combination matrices are spliced ​​together according to the overall layout of the display area to form the initial electrode combination scheme of the complete display area.

[0010] Preferably, acquiring the alignment data of liquid crystal molecules in each direction includes: For the generated initial electrode combination scheme, a liquid crystal molecule arrangement model is established in each sub-region, including molecule orientation, rotation angle and relative position parameters; Electric fields are applied to the liquid crystal molecules in the model in multiple preset directions to simulate the process, including the vertical direction and the surrounding horizontal direction. Record the arrangement data of liquid crystal molecules in each sub-region under the action of electric fields in various directions, including molecular rotation angle, tilt angle and twist direction; The liquid crystal molecule arrangement data of each sub-region are archived according to the sub-region number and coordinate information.

[0011] Preferably, the closed-loop adaptive optimization mechanism includes: Based on the comparison between the liquid crystal molecule arrangement state data and the prototype verification data, the two types of data are fused according to the preset weighting coefficients to form unified parameter deviation evaluation data. Based on the parameter deviation evaluation data, an optimization strategy for the electrode parameters of each sub-region is dynamically generated, including priority allocation and update step size settings. The optimization strategy is converged. If the preset conditions are not met, the optimization strategy is updated until the final optimization solution is generated.

[0012] Preferably, the step of adjusting the electrode parameters of each sub-region includes: Based on the closed-loop optimization scheme, the key parameters of the electrodes in each sub-region are extracted, including length, width, spacing and interlayer relative position. Based on preset constraints, the electrode parameters of each sub-region are adjusted in specific values. The constraints include line length, line width, line spacing, and interlayer spacing. During the adjustment process, the electrode parameters of each sub-region are updated using an iterative calculation method until the parameter settings for all sub-regions are completed. The adjusted electrode parameters of each sub-region are integrated to form a parameter combination used to generate the final electrode design scheme.

[0013] Preferably, the step of forming the final electrode design includes: The electrode combination after parameter adjustment is compared with the verification data obtained during the closed-loop optimization process to select the electrode parameter combination that meets the preset convergence condition. The selected electrode parameter combinations are classified and numbered in a hierarchical manner to form a set of candidate electrode design schemes; Perform a consistency check on the candidate solution set and eliminate solutions that conflict between different sub-regions or do not meet design constraints; The electrode parameter combinations that pass the test are confirmed as the final electrode design scheme, and the corresponding layout files are generated for subsequent prototype manufacturing.

[0014] Preferably, updating the initial parameters based on the prototype verification results includes: Verification tests were conducted on the liquid crystal display device prototype manufactured based on the final electrode design scheme to obtain test data including electrode structure consistency, driving stability, and electric field distribution uniformity. The test data is compared with the electrode design parameters to identify the sub-regions with deviations and the corresponding electrode parameter items. The identified parameters are corrected, including resetting the electrode length, width, spacing, and interlayer arrangement. The revised parameters are updated to the initial parameter library to form a new parameter baseline; In the subsequent electrode pattern design process, the parameter baseline is called first to dynamically update the initial parameters.

[0015] Secondly, the present invention provides the following technical solution: an electrode pattern design system for a full-view VA liquid crystal display device, the system comprising the following modules: The data acquisition and storage module is used to receive pixel arrangement information of the liquid crystal display device and prototype test data, and to record the initial electrode parameters of each sub-region; The electrode design processing module is used to generate an initial electrode combination scheme based on the display area division and initial electrode parameters, and to establish a liquid crystal molecule arrangement model to obtain arrangement state data in each direction; The optimization control module is used to execute a closed-loop adaptive optimization mechanism, generate optimization strategies for electrode parameters in each sub-region, and adjust the electrode parameters according to preset constraints. The parameter integration module is used to integrate the adjusted electrode parameters of each sub-region to form the final electrode design scheme and generate the corresponding layout file; The prototype verification and update module is used to test the LCD device prototype made according to the final design scheme, identify deviation parameters and update them to the initial parameter library.

[0016] The present invention has the following beneficial effects: 1. In this invention, a layered combination design method of upper and lower electrodes is adopted. The upper layer adopts short line or slightly curved line electrodes, and the lower layer adopts through long line or grid-like electrodes. The length, width, spacing and relative position of the two layers of electrodes are gradient-distributed. This solves the limitation of the single electrode design of traditional full-view VA liquid crystal display devices, realizes the orderly twisted arrangement of liquid crystal molecules in different directions, and thus solves the problems of low-viewing-angle pitting and uneven brightness across the entire viewing angle.

[0017] 2. In this invention, by establishing a sub-region division and closed-loop adaptive optimization mechanism, the display area is divided into multiple regular sub-regions, and a liquid crystal molecule arrangement model is established for each sub-region. At the same time, the simulation data and the prototype test data are weighted and fused to generate parameter deviation evaluation data, and the electrode parameters are dynamically adjusted based on the data. This achieves local fine optimization and overall consistency control of electrode parameters, ensuring that the arrangement direction and electric field distribution of liquid crystal molecules in each sub-region can be precisely controlled.

[0018] 3. In this invention, through the collaborative work of data acquisition and storage, design processing, optimization control, parameter integration and prototype verification modules, a closed-loop design process is realized from initial parameter generation, simulation optimization, layout generation to prototype verification and parameter updating; this ensures that the design scheme can be directly used for production, and at the same time, the dynamic updating of the parameter library enables continuous optimization and iteration of the design scheme, providing a systematic and reusable design method for the research and development of liquid crystal display devices. Attached Figure Description

[0019] Figure 1 This is a flowchart of an electrode pattern design method for a full-view VA liquid crystal display device proposed in this invention; Figure 2 This is an electrode pattern design diagram of an electrode pattern design method for a full-view VA liquid crystal display device proposed in this invention; Figure 3 This is a schematic diagram of transmittance fluctuation in an electrode pattern design method for a full-view VA liquid crystal display device proposed in this invention. Figure 4 This is an architectural diagram of an electrode pattern design system for a full-view VA liquid crystal display device proposed in this invention. Detailed Implementation

[0020] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] Example 1: In a first embodiment of the present invention, the present invention provides an electrode pattern design method for a full-view VA liquid crystal display device, such as... Figures 1-3 As shown, it includes the following steps: The liquid crystal display device is divided into two layers: an upper electrode and a lower electrode, and the initial parameters of each electrode layer are set independently. Furthermore, dividing the liquid crystal display device into two layers, an upper electrode and a lower electrode, includes: The upper electrode is designed by setting short or slightly curved electrodes within each display pixel area, and the electrode length, width and spacing are determined. The lower layer electrodes are designed, and through-line or grid-like electrodes are arranged in the corresponding display area. The electrode length, width, spacing and the interlayer relative position of the upper layer electrodes are determined. In each sub-display area, the length, width, and spacing parameters of the upper and lower electrodes are allocated according to the pixel arrangement within the display area, so that the electrode arrangement in each sub-region completely covers the display area and forms a continuous electric field.

[0022] Specifically, by dividing the liquid crystal display device into two layers, an upper electrode and a lower electrode, and independently setting the initial parameters of each electrode layer, multi-directional liquid crystal molecule alignment control is achieved, thereby satisfying the optical consistency of different display angles; In the specific implementation process, the display area is further divided into multiple sub-regions. The parameters of the upper and lower electrodes are designed independently for each sub-region to form an initial electrode combination scheme. By gradient-distributing the electrode length, width, and spacing parameters of the sub-regions, the electrode arrangement in different sub-regions meets the requirements of completely covering the display area and forming a continuous electric field. At the same time, the relative position between layers is considered in the electrode arrangement to ensure that the upper and lower electrodes can form multi-directional twists after being energized, so that the liquid crystal molecules can respond to the applied electric field in both the vertical and horizontal directions.

[0023] like Figure 3 As shown, the left side features a continuous long line design, the middle side features a short line design, and the right side features a two-layer combination design. The upper electrode design uses short lines or slightly curved lines, with an independent electrode unit set within each display pixel area. Its length, width, and spacing parameters are allocated according to the pixel arrangement rules. The selectable short line length ④ is between 5–100µm, the width ⑤ is between 5–30µm, and the spacing ⑥ is between 5–50µm. The lower electrode design uses a continuous long line or a grid structure, allowing the electrodes to penetrate or stagger and cover the display area within the sub-region. Its length ③ can be set according to the length of the sub-region, for example, 0.3–200mm, the width ① is between 5–30µm, and the spacing ② is between 20–200µm. The interlayer distance ⑦ between the upper and lower electrodes can be selected within the range of 5–50µm to ensure the uniformity of the electric field and the continuity of the liquid crystal molecule arrangement when energized. First, the upper and lower electrodes of each sub-region are combined to form an initial electrode combination matrix. For each sub-region within the matrix, the relative positions of the upper and lower electrodes are adjusted according to the electrode arrangement rules to ensure that the electrode pattern completely covers the display area within the sub-region. The combination matrices of each sub-region are then spliced ​​together according to the overall layout of the display area to form a complete initial electrode combination scheme. Subsequently, electric field simulation is performed on the initial electrode combination scheme. By simulating the rotation angle, tilt angle, and twisting direction of liquid crystal molecules in different directions, the arrangement state data of liquid crystal molecules in each sub-region is obtained for subsequent closed-loop optimization and parameter adjustment.

[0024] In the application phase, a closed-loop optimization scheme is generated using initial parameters and simulation data. Key electrode parameters for each sub-region are analyzed, including length, width, spacing, and relative position between layers, and iteratively adjusted according to preset constraints. These constraints include line length, line width, line spacing, and interlayer spacing. The electrode parameters of the sub-regions are continuously updated through iterative calculations until the parameters of all sub-regions are set. Finally, the adjusted electrode parameters of each sub-region are integrated to form a complete electrode parameter combination, which is used to generate the final electrode design scheme. This scheme can also be directly used for the fabrication and verification of liquid crystal display device prototypes, ensuring that the design method can achieve the expected electrode arrangement layout from multiple perspectives.

[0025] The display area is divided into multiple sub-regions. The initial parameters of the upper and lower electrodes are determined in each sub-region. The parameter ranges are allocated in different sub-regions according to the gradient design principle to generate an initial electrode combination scheme. Furthermore, dividing the display area into multiple sub-regions includes: Based on the geometric dimensions and pixel arrangement of the display area, the display area is divided into several regular grid sub-regions, each sub-region covering one or more pixels; During the partitioning process, a fixed boundary spacing is set between adjacent sub-regions to maintain the independence of the sub-regions; Assign a unique identifier to each sub-region and record its location, size, and coordinates relative to the display area; Subregions are numbered and arranged vertically, horizontally, or diagonally to form a standardized subregion structure.

[0026] Furthermore, the initial electrode assembly generation scheme includes: Record the initial parameters of the upper and lower electrodes in each sub-region, including length, width, spacing and arrangement angle; The upper and lower electrodes of each sub-region are combined in the order of sub-region numbering to form an initial electrode combination matrix; For each sub-region in the combination matrix, adjust the relative positions of the upper and lower electrodes according to the prescribed arrangement rules to ensure that the electrode pattern is completely covered within the sub-region. The sub-region combination matrices are spliced ​​together according to the overall layout of the display area to form the initial electrode combination scheme of the complete display area.

[0027] Specifically, the display area will be divided into multiple sub-regions to allow for fine-grained management of the upper and lower electrode parameters within each sub-region and to generate an initial electrode combination scheme. In the specific implementation process, the display area is divided into several regular grids according to the geometric size and pixel arrangement of the display area. Each sub-region covers one or several pixels. At the same time, a fixed boundary spacing is set to ensure the independence of adjacent sub-regions and the locality of electrode parameter adjustment. Each sub-region is assigned a unique identifier and its position, size and coordinate information relative to the overall display area are recorded so as to be accurately called and tracked in subsequent combination, optimization and simulation calculations. During the initial electrode assembly scheme generation process, detailed records were made of the upper and lower electrode parameters for each sub-region, including electrode length. ,width ,spacing and the angle of arrangement By matrix-combining the numbering order of sub-regions, the upper and lower electrodes are arranged according to specific rules within local areas to form an initial electrode combination matrix. During the combination process, the relative positions of the upper and lower electrodes are dynamically adjusted according to the characteristics of the sub-regions. To ensure complete coverage of the electrodes within the sub-region and avoid local gaps or discontinuous electric fields, the electrode arrangement in each sub-region of the matrix can be parameter-allocated according to the gradient principle. For example, the length, width, or spacing can be adjusted in stages between the center and the edge of the display area to optimize the uniformity of the liquid crystal molecule arrangement. The combination matrices of each sub-region are spliced ​​together according to the overall layout of the display area to form the initial electrode combination scheme of the complete display area; during the splicing process, the local electrode parameters of each sub-region are accurately mapped to the global display area through coordinate mapping to ensure continuity and arrangement standardization; This initial combination scheme can be used as input for subsequent electric field simulation, liquid crystal molecule arrangement analysis, and closed-loop adaptive optimization strategies, realizing complete process control from local sub-region design to overall display device electrode layout. This process can be implemented programmatically or automatically adjusted by combining algorithms to adapt to the requirements of different display patterns and pixel densities.

[0028] Electric field simulation was performed on the initial electrode combination scheme to obtain the arrangement state data of liquid crystal molecules in each direction; Furthermore, acquiring the alignment data of liquid crystal molecules in various directions includes: For the generated initial electrode combination scheme, a liquid crystal molecule arrangement model is established in each sub-region, including molecule orientation, rotation angle and relative position parameters; Electric fields are applied to the liquid crystal molecules in the model in multiple preset directions to simulate the process, including the vertical direction and the surrounding horizontal direction. Record the arrangement data of liquid crystal molecules in each sub-region under the action of electric fields in various directions, including molecular rotation angle, tilt angle and twist direction; The liquid crystal molecule arrangement data of each sub-region are archived according to the sub-region number and coordinate information.

[0029] Specifically, electric field simulation is performed on the initial electrode combination scheme to obtain data on the arrangement state of liquid crystal molecules in different directions; In the specific implementation process, the first step is to establish a liquid crystal molecule arrangement model in each sub-region, which includes the orientation vectors of the liquid crystal molecules. Rotation angle and relative position parameters It is used to accurately describe the spatial arrangement and twisting characteristics of liquid crystal molecules; when building the model, the lengths of the upper and lower electrodes are taken into account. ,width ,spacing and the relative positions between floors The boundary conditions for the liquid crystal molecule arrangement are defined to ensure that the simulation results can accurately reflect the influence of the actual electrode layout on the liquid crystal molecule arrangement. The electric field was applied to the liquid crystal molecule arrangement model in multiple preset directions, including the vertical electric field. and the horizontal electric field For example, the four directions: up, down, left, and right; the electric field strength, direction, and application method in each direction can be set according to the driving voltage and pixel characteristics of the liquid crystal display, and can be expressed by the formula: ,in The total electric field vector is... It is the vertical electric field vector. The electric field vectors in each direction along the horizontal axis are calculated; the twisting angles of the liquid crystal molecules under the influence of the total electric field are then determined. With tilt angle Record its rotation, tilt and twist directions to obtain the arrangement state of each sub-region under the action of electric fields in different directions; The alignment data of liquid crystal molecules in each sub-region are archived according to the sub-region number and coordinate information to form a database that can be used for subsequent closed-loop adaptive optimization and parameter adjustment; the archived data includes liquid crystal molecule orientation vectors. Rotation angle Inclination angle The direction of the distortion and the global coordinates of the sub-region. This archiving allows for the tracking, analysis, and optimization of the response of liquid crystal molecules in each sub-region within the overall display area, enabling a closed-loop design process from local sub-region electrode design to prediction of the overall liquid crystal molecule arrangement. Simultaneously, the simulation data can be compared with prototype verification results, providing a basis for subsequent electrode parameter adjustments and optimizations.

[0030] By combining simulation data with prototype verification results, the electrode parameters of each sub-region are adjusted through a closed-loop adaptive optimization mechanism. Furthermore, the closed-loop adaptive optimization mechanism includes: Based on the comparison between the liquid crystal molecule arrangement state data and the prototype verification data, the two types of data are fused according to the preset weighting coefficients to form unified parameter deviation evaluation data. Based on the parameter deviation evaluation data, an optimization strategy for the electrode parameters of each sub-region is dynamically generated, including priority allocation and update step size settings. The optimization strategy is converged. If the preset conditions are not met, the optimization strategy is updated until the final optimization solution is generated.

[0031] Furthermore, the step of adjusting the electrode parameters of each sub-region includes: Based on the closed-loop optimization scheme, the key parameters of the electrodes in each sub-region are extracted, including length, width, spacing and interlayer relative position. Based on preset constraints, the electrode parameters of each sub-region are adjusted in specific values. The constraints include line length, line width, line spacing, and interlayer spacing. During the adjustment process, the electrode parameters of each sub-region are updated using an iterative calculation method until the parameter settings for all sub-regions are completed. The adjusted electrode parameters of each sub-region are integrated to form a parameter combination used to generate the final electrode design scheme.

[0032] Specifically, the simulation data of the liquid crystal molecule arrangement state is combined with the verification results of the liquid crystal display device prototype, and the electrode parameters of each sub-region are iteratively adjusted through a closed-loop adaptive optimization mechanism; In the specific implementation process, the liquid crystal molecule arrangement state data of each sub-region is first compared with the prototype test data, and the deviation value between the two is calculated. And according to the preset weighting coefficients and By fusing simulation data and prototype data, unified parameter deviation evaluation data is obtained. ,in For simulation parameters, The parameters were measured for the prototype. This evaluation data is used to guide the optimization algorithm in generating electrode parameter adjustment strategies, including priority allocation and step size settings for parameter updates in each sub-region, to ensure that the adjustment process meets design constraints.

[0033] Subsequently, based on the generated optimization strategy, key electrode parameters for each sub-region are extracted, including the lengths of the upper and lower electrodes. ,width Line spacing and the relative positions between layers Based on preset constraints, such as , , and The parameters are adjusted numerically; an iterative calculation method is used during the adjustment process. ,in Indicates the first The parameter vector for the next iteration. The iteration step size, The parameter deviation gradient is applied until all sub-region parameters meet the convergence condition or reach the preset accuracy. After the adjustment is completed, the updated electrode parameters of each sub-region are integrated to form a complete parameter combination matrix, which is used to generate the final electrode design scheme. During the integration process, the continuity of electrode arrangement and the integrity of electric field coverage between different sub-regions are ensured. At the same time, the final parameter information of each sub-region is recorded, including length, width, spacing and interlayer arrangement, providing a complete data foundation for subsequent prototype manufacturing and verification. This closed-loop adaptive optimization process realizes dynamic adjustment from simulation prediction to actual prototype feedback, making electrode parameter design more accurate, controllable and systematic.

[0034] The final electrode design scheme is formed based on the closed-loop optimization results, and the scheme is applied to the prototype of the liquid crystal display device. At the same time, the initial parameters are updated based on the prototype verification results.

[0035] Furthermore, the step of forming the final electrode design includes: The electrode combination after parameter adjustment is compared with the verification data obtained during the closed-loop optimization process to select the electrode parameter combination that meets the preset convergence condition. The selected electrode parameter combinations are classified and numbered in a hierarchical manner to form a set of candidate electrode design schemes; Perform a consistency check on the candidate solution set and eliminate solutions that conflict between different sub-regions or do not meet design constraints; The electrode parameter combinations that pass the test are confirmed as the final electrode design scheme, and the corresponding layout files are generated for subsequent prototype manufacturing.

[0036] Furthermore, updating the initial parameters based on the prototype verification results includes: Verification tests were conducted on the liquid crystal display device prototype manufactured based on the final electrode design scheme to obtain test data including electrode structure consistency, driving stability, and electric field distribution uniformity. The test data is compared with the electrode design parameters to identify the sub-regions with deviations and the corresponding electrode parameter items. The identified parameters are corrected, including resetting the electrode length, width, spacing, and interlayer arrangement. The revised parameters are updated to the initial parameter library to form a new parameter baseline; In the subsequent electrode pattern design process, the parameter baseline is called first to dynamically update the initial parameters.

[0037] Specifically, the final electrode design scheme is generated based on the closed-loop adaptive optimization results, and the scheme is applied to the prototype of the liquid crystal display device. At the same time, the initial parameters are updated based on the prototype verification results. In the specific implementation process, the electrode parameter combinations of each sub-region, which are adjusted through closed-loop optimization iteration, are first compared with the verification data obtained during the optimization process, and the deviation of each parameter item is calculated. ,in For the optimized parameters, To verify the measured parameters, and to select suitable electrode parameter combinations based on preset convergence conditions, this selection process ensures that the electrode patterns of each sub-region meet the design constraints in terms of spatial coverage and interlayer relationships, thereby forming a set of candidate electrode combinations. The selected electrode parameter combinations are categorized and numbered hierarchically to give each candidate scheme a unique identifier, and the corresponding sub-region parameter information, including length, is recorded. ,width Line spacing and the relative positions between floors A consistency check is performed on the candidate scheme set to check whether there are conflicts in the electrode arrangement between different sub-regions, such as overlapping of two layers of electrodes or inconsistent spacing, and whether the overall electric field continuity and uniformity requirements are met. Schemes that do not meet the constraints are eliminated. The parameter combinations that pass the check are confirmed to generate the final electrode design scheme and converted into the corresponding layout file for use in prototype manufacturing and subsequent process flow. After fabricating a prototype liquid crystal display device using the final design scheme, the prototype was subjected to verification tests to obtain data on electrode structure consistency, driving stability, and electric field distribution uniformity. The test data was compared with the electrode design parameters to identify sub-regions and key parameters with deviations, and the deviation parameters were corrected, including resetting length, width, line spacing, and interlayer arrangement. The corrected parameters were updated to the initial parameter library to form a new parameter baseline. ,in The correction parameters are used to dynamically call and update the initial parameters in subsequent electrode pattern design. This process realizes closed-loop management from the final design scheme to the prototype verification feedback and then to the initial parameter update, so that the electrode design can maintain accuracy and systematization in continuous iteration, and provides a complete and repeatable technical route for the electrode pattern design of full-view VA liquid crystal display devices.

[0038] Example 2: Existing full-viewing-angle VA liquid crystal display devices typically employ a single-layer electrode design, which cannot precisely control the twisting and alignment of liquid crystal molecules in all directions. This leads to electric field conflicts and the formation of pinholes at low viewing angles. Furthermore, significant differences in brightness and transmittance exist at different viewing angles, affecting display uniformity and the user's visual experience. To address these issues, this invention provides an electrode pattern design system for full-viewing-angle VA liquid crystal display devices, the structure of which is as follows: Figure 4 As shown. The specific implementation process of this system is as follows: The data acquisition and storage module is used to receive pixel arrangement information of the liquid crystal display device and prototype test data, and to record the initial electrode parameters of each sub-region; The electrode design processing module is used to generate an initial electrode combination scheme based on the display area division and initial electrode parameters, and to establish a liquid crystal molecule arrangement model to obtain arrangement state data in each direction; The optimization control module is used to execute a closed-loop adaptive optimization mechanism, generate optimization strategies for electrode parameters in each sub-region, and adjust the electrode parameters according to preset constraints. The parameter integration module is used to integrate the adjusted electrode parameters of each sub-region to form the final electrode design scheme and generate the corresponding layout file; The prototype verification and update module is used to test the LCD device prototype made according to the final design scheme, identify deviation parameters and update them to the initial parameter library.

[0039] Specifically, the pixel arrangement information of the liquid crystal display device is first acquired through the data acquisition and storage module, including the number of horizontal and vertical pixels, pixel pitch, and geometric dimensions of the display area. Simultaneously, test data from the liquid crystal display device prototype, such as low-viewing-angle brightness, transmittance, and electric field distribution data, are collected. An initial parameter recording table for each sub-region electrode is then established within the module, recording the length of each sub-region electrode. ,width Line spacing and the relative positions of the upper and lower floors Key parameters such as these are used to ensure that the subsequent design process has reliable basic data. The electrode design and processing module generates an initial electrode combination scheme based on the display area division and initial electrode parameters. In the specific implementation process, the display area is divided into several regular grid sub-regions, each sub-region corresponding to one or more pixels. A liquid crystal molecule arrangement model is established for each sub-region, and the orientation, rotation angle, and relative position of the liquid crystal molecules in the model are assigned initial values. The effect of the simulated electric field is then applied. ,in For driving voltage, To determine the thickness of the liquid crystal layer, calculate the alignment of the liquid crystal molecules in the vertical and horizontal directions, and record the rotation angles. Inclination angle and the direction of distortion This data will serve as a reference for subsequent optimizations. The optimization control module executes a closed-loop adaptive optimization mechanism. In the specific implementation process, the liquid crystal molecule arrangement state data generated by the electrode design processing module is compared with the prototype test results, and a weighted fusion method is used to form parameter deviation evaluation data. ,in To account for simulation deviations, Due to experimental bias, and The weighting coefficients are preset; an optimization strategy for electrode parameters in each sub-region is generated based on the deviation data, including priority allocation and setting of iterative update step size. The electrode parameters are iteratively adjusted according to preset constraints, such as line length, line width, line spacing and interlayer spacing, until the convergence condition is met to form an optimization scheme. In its implementation, the parameter integration module integrates the electrode parameters of each sub-region output by the optimization control module to form the final electrode design scheme. During the integration process, the parameters of each sub-region are uniformly numbered, classified into layouts, and a layout file that can be directly used for prototype manufacturing is generated to ensure that each electrode graphic is fully covered in the display area and that the interlayer relationship is reasonable, thus forming an executable production plan. In its implementation, the prototype verification and update module will perform functional verification on the liquid crystal display device prototype prepared based on the final electrode design scheme, and obtain data on electrode structure consistency, driving stability and electric field distribution uniformity. By comparing the test data with the design parameters, it will identify the sub-regions with deviations and their corresponding parameter items, and correct the electrode length, width, line spacing and interlayer arrangement. The corrected parameters will be updated to the initial parameter library to form a new parameter baseline, which can be dynamically called in subsequent electrode designs to realize continuous optimization and closed-loop iterative management of electrode pattern design.

[0040] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A method for designing electrode patterns for a full-view VA liquid crystal display device, characterized in that, Includes the following steps: The liquid crystal display device is divided into two layers: an upper electrode and a lower electrode, and the initial parameters of each electrode layer are set independently. The display area is divided into multiple sub-regions. The initial parameters of the upper and lower electrodes are determined in each sub-region. The parameter ranges are allocated in different sub-regions according to the gradient design principle to generate an initial electrode combination scheme. Electric field simulation was performed on the initial electrode combination scheme to obtain the arrangement state data of liquid crystal molecules in each direction; By combining simulation data with prototype verification results, the electrode parameters of each sub-region are adjusted through a closed-loop adaptive optimization mechanism. The final electrode design scheme is formed based on the closed-loop optimization results, and the scheme is applied to the prototype of the liquid crystal display device. At the same time, the initial parameters are updated based on the prototype verification results.

2. The electrode pattern design method for a full-view VA liquid crystal display device according to claim 1, characterized in that, The process of dividing the liquid crystal display device into two layers, an upper electrode and a lower electrode, includes: The upper electrode is designed by setting short or slightly curved electrodes within each display pixel area, and the electrode length, width and spacing are determined. The lower layer electrodes are designed, and through-line or grid-like electrodes are arranged in the corresponding display area. The electrode length, width, spacing and the interlayer relative position of the upper layer electrodes are determined. In each sub-display area, the length, width, and spacing parameters of the upper and lower electrodes are allocated according to the pixel arrangement within the display area, so that the electrode arrangement in each sub-region completely covers the display area and forms a continuous electric field.

3. The electrode pattern design method for a full-view VA liquid crystal display device according to claim 1, characterized in that, The division of the display area into multiple sub-regions includes: Based on the geometric dimensions and pixel arrangement of the display area, the display area is divided into several regular grid sub-regions, each sub-region covering one or more pixels; During the partitioning process, a fixed boundary spacing is set between adjacent sub-regions to maintain the independence of the sub-regions; Assign a unique identifier to each sub-region and record its location, size, and coordinates relative to the display area; Subregions are numbered and arranged vertically, horizontally, or diagonally to form a standardized subregion structure.

4. The electrode pattern design method for a full-view VA liquid crystal display device according to claim 1, characterized in that, The initial electrode assembly generation scheme includes: Record the initial parameters of the upper and lower electrodes in each sub-region, including length, width, spacing and arrangement angle; The upper and lower electrodes of each sub-region are combined in the order of sub-region numbering to form an initial electrode combination matrix; For each sub-region in the combination matrix, adjust the relative positions of the upper and lower electrodes according to the prescribed arrangement rules to ensure that the electrode pattern is completely covered within the sub-region. The sub-region combination matrices are spliced ​​together according to the overall layout of the display area to form the initial electrode combination scheme of the complete display area.

5. The electrode pattern design method for a full-view VA liquid crystal display device according to claim 1, characterized in that, The acquisition of the alignment state data of liquid crystal molecules in various directions includes: For the generated initial electrode combination scheme, a liquid crystal molecule arrangement model is established in each sub-region, including molecule orientation, rotation angle and relative position parameters; Electric fields are applied to the liquid crystal molecules in the model in multiple preset directions to simulate the process, including the vertical direction and the surrounding horizontal direction. Record the arrangement data of liquid crystal molecules in each sub-region under the action of electric fields in various directions, including molecular rotation angle, tilt angle and twist direction; The liquid crystal molecule arrangement data of each sub-region are archived according to the sub-region number and coordinate information.

6. The electrode pattern design method for a full-view VA liquid crystal display device according to claim 1, characterized in that, The closed-loop adaptive optimization mechanism includes: Based on the comparison between the liquid crystal molecule arrangement state data and the prototype verification data, the two types of data are fused according to the preset weighting coefficients to form unified parameter deviation evaluation data. Based on the parameter deviation evaluation data, an optimization strategy for the electrode parameters of each sub-region is dynamically generated, including priority allocation and update step size settings. The optimization strategy is converged. If the preset conditions are not met, the optimization strategy is updated until the final optimization solution is generated.

7. The electrode pattern design method for a full-view VA liquid crystal display device according to claim 1, characterized in that, The steps for adjusting the electrode parameters of each sub-region include: Based on the closed-loop optimization scheme, the key parameters of the electrodes in each sub-region are extracted, including length, width, spacing and interlayer relative position. Based on preset constraints, the electrode parameters of each sub-region are adjusted in specific values. The constraints include line length, line width, line spacing, and interlayer spacing. During the adjustment process, the electrode parameters of each sub-region are updated using an iterative calculation method until the parameter settings for all sub-regions are completed. The adjusted electrode parameters of each sub-region are integrated to form a parameter combination used to generate the final electrode design scheme.

8. The electrode pattern design method for a full-view VA liquid crystal display device according to claim 1, characterized in that, The steps for forming the final electrode design include: The electrode combination after parameter adjustment is compared with the verification data obtained during the closed-loop optimization process to select the electrode parameter combination that meets the preset convergence condition. The selected electrode parameter combinations are classified and numbered in a hierarchical manner to form a set of candidate electrode design schemes; Perform a consistency check on the candidate solution set and eliminate solutions that conflict between different sub-regions or do not meet design constraints; The electrode parameter combinations that pass the test are confirmed as the final electrode design scheme, and the corresponding layout files are generated for subsequent prototype manufacturing.

9. The electrode pattern design method for a full-view VA liquid crystal display device according to claim 1, characterized in that, The step of updating the initial parameters based on the prototype verification results includes: Verification tests were conducted on the liquid crystal display device prototype manufactured based on the final electrode design scheme to obtain test data including electrode structure consistency, driving stability, and electric field distribution uniformity. The test data is compared with the electrode design parameters to identify the sub-regions with deviations and the corresponding electrode parameter items. The identified parameters are corrected, including resetting the electrode length, width, spacing, and interlayer arrangement. The revised parameters are updated to the initial parameter library to form a new parameter baseline; In the subsequent electrode pattern design process, the parameter baseline is called first to dynamically update the initial parameters.

10. An electrode pattern design system for a full-view VA liquid crystal display device, characterized in that, An electrode pattern design method for a full-view VA liquid crystal display device according to any one of claims 1-9, the system comprising the following modules: The data acquisition and storage module is used to receive pixel arrangement information of the liquid crystal display device and prototype test data, and to record the initial electrode parameters of each sub-region; The electrode design processing module is used to generate an initial electrode combination scheme based on the display area division and initial electrode parameters, and to establish a liquid crystal molecule arrangement model to obtain arrangement state data in each direction; The optimization control module is used to execute a closed-loop adaptive optimization mechanism, generate optimization strategies for electrode parameters in each sub-region, and adjust the electrode parameters according to preset constraints. The parameter integration module is used to integrate the adjusted electrode parameters of each sub-region to form the final electrode design scheme and generate the corresponding layout file; The prototype verification and update module is used to test the LCD device prototype made according to the final design scheme, identify deviation parameters and update them to the initial parameter library.

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