Light guide plate production intelligent management and control method and system based on information collaboration

Abstract

The invention discloses a light guide plate production intelligent management and control method and system based on information collaboration, and relates to the technical field of light guide plate production, and the method comprises the steps: obtaining light guide plate substrate material information, obtaining light guide plate forming process parameters based on a light guide plate forming process, and taking the light guide plate forming process parameters as a reference according to the light guide plate substrate material information; and obtaining light guide plate processing technology information. The light guide plate forming process quality index is obtained according to the qualified rate information, the process coefficient and the light transmittance corresponding to each light guide plate forming process, the light guide plate forming processes are screened according to the light guide plate forming process quality index, the production efficiency of the light guide plate is improved, the stability and reliability of the light guide plate are ensured, and the production cost is reduced. The basic light guide plate is subjected to region division, the basic light guide plate line region information is obtained, the quality of the light guide plate is detected through the basic light guide plate line region information, and the detection efficiency of the light guide plate is improved while the detection accuracy is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of light guide plate production, and specifically to an intelligent control method and system for light guide plate production based on information collaboration. Background Art

[0002] Currently, most electronic devices use flat display components for screen display, among which the technology of liquid crystal display components is relatively mature and popular. However, since the display panel of liquid crystal display components itself cannot emit light, a backlight component is provided below the display panel to provide the light required for the display screen. The backlight component can be mainly divided into a side-light type backlight component and a direct-lit backlight component. The side-light type backlight component uses a light guide plate to direct the light emitted by the light source arranged on the light-incident side surface of the light guide plate to the light-emitting surface of the light guide plate, so as to form a surface light source. It can be seen that the quality of the light guide plate has a direct impact on the image display effect.

[0003] Currently, there are still problems in the production control of light guide plates, such as the inability to accurately evaluate the material properties of the light guide plate, the inability to select appropriate processing techniques, the inability to accurately detect the light guide plate. Usually, the regional brightness of the light guide plate is directly detected, but the regional brightness of the light guide plate has a direct relationship with the dot patterns. Using the regional brightness of the light guide plate as the detection standard cannot accurately judge the specific brightness center, and it is impossible to accurately evaluate the quality of the light guide plate. If each dot is detected, not only will the detection cost increase, but also the detection efficiency will be greatly affected. Summary of the Invention

[0004] To solve the above technical problems, an intelligent control method and system for light guide plate production based on information collaboration are provided. The technical solution of the present invention solves the problems mentioned in the above background art, such as the inability to accurately evaluate the material properties of the light guide plate, the inability to select appropriate processing techniques, the inability to accurately detect the light guide plate. Usually, the regional brightness of the light guide plate is directly detected, but the regional brightness of the light guide plate has a direct relationship with the dot patterns. Using the regional brightness of the light guide plate as the detection standard cannot accurately judge the specific brightness center, and it is impossible to accurately evaluate the quality of the light guide plate. If each dot is detected, not only will the detection cost increase, but also the detection efficiency will be greatly affected.

[0005] To achieve the above object, the technical solution adopted by the present invention is as follows:

[0006] An intelligent control method for light guide plate production based on information collaboration includes:

[0007] Obtain light guide plate substrate material information, where the light guide plate substrate material information includes substrate material type information and substrate material parameter information;

[0008] Based on the light guide plate forming process, obtain the light guide plate forming process parameters. The light guide plate forming process includes injection molding process, compression process, and hot pressing process;

[0009] Taking the light guide plate forming process parameters as a reference, obtain the light guide plate processing process information according to the light guide plate substrate material information;

[0010] Based on the light guide plate processing process information, form the light guide plate substrate material to obtain a basic light guide plate;

[0011] According to the basic light guide plate, obtain the light guide plate dot position information and the light incident side information;

[0012] Detect the thickness of the basic light guide plate to obtain the maximum thickness and the minimum thickness of the light guide plate;

[0013] According to the maximum thickness, the minimum thickness of the light guide plate, and the light incident side information, divide the basic light guide plate into regions to obtain the basic light guide plate row region information;

[0014] According to the light guide plate dot position information and the basic light guide plate row region information, determine whether the basic light guide plate is qualified. If not, adjust the light guide plate according to the basic light guide plate row region information. If so, the basic light guide plate is qualified.

[0015] Preferably, taking the light guide plate forming process parameters as a reference, obtaining the light guide plate processing process information according to the light guide plate substrate material information specifically includes:

[0016] According to the light guide plate forming process parameters, obtain the light transmittance and the material limit light transmittance corresponding to each light guide plate forming process;

[0017] Obtain the light guide plate historical production data, where the light guide plate historical production data includes the light guide plate historical data corresponding to each light guide plate forming process;

[0018] According to the light guide plate historical production data, obtain the qualification rate information and the cost information corresponding to each light guide plate forming process;

[0019] Take the proportion of the cost information corresponding to each light guide plate forming process as the process coefficient of the light guide plate forming process;

[0020] According to the qualification rate information, the process coefficient, and the light transmittance corresponding to each light guide plate forming process, obtain the light guide plate forming process quality index;

[0021] Take the light guide plate forming process with the largest light guide plate forming process quality index as the light guide plate processing process to obtain the light guide plate processing process information;

[0022] Among them, the calculation formula of the light guide plate forming process quality index is:

[0023]

[0024] In the formula, Q(x) is the quality index of the light guide plate forming process for the x-th light guide plate forming process, L(x) represents the light transmittance of the x-th light guide plate forming process, and P x represents the qualification rate of the x-th light guide plate forming process, represents the process coefficient of the x-th light guide plate forming process, and L max represents the material limit light transmittance.

[0025] Preferably, obtaining the light transmittance and the material limit light transmittance corresponding to each light guide plate forming process according to the light guide plate forming process parameters specifically includes:

[0026] Obtaining material characteristic temperature information according to the light guide plate substrate material information, where the material characteristic temperature information includes the Vicat softening temperature and the heat distortion temperature;

[0027] Based on the requirements of the light guide plate forming process parameters, taking the Vicat softening temperature as the hot pressing process temperature and the heat distortion temperature as the injection molding process temperature;

[0028] Obtaining the light transmittance temperature change curve of the substrate material according to the substrate material parameter information in the light guide plate substrate material information;

[0029] Taking the hot pressing process temperature and the injection molding process temperature as the reference, and obtaining the hot pressing process light transmittance and the injection molding process light transmittance according to the light transmittance temperature change curve of the substrate material;

[0030] Obtaining the light transmittance of the substrate material and the material limit light transmittance according to the light guide plate substrate material information;

[0031] Taking the light transmittance of the substrate material as the compression process light transmittance;

[0032] Obtaining the light transmittance corresponding to each light guide plate forming process according to the hot pressing process light transmittance, the injection molding process light transmittance, and the compression process light transmittance.

[0033] Preferably, forming the light guide plate substrate material based on the light guide plate processing process information to obtain a basic light guide plate specifically includes:

[0034] Obtaining the light guide plate processing parameters according to the light guide plate processing process information;

[0035] Forming the light guide plate substrate material with the light guide plate processing parameters as the reference to obtain a basic light guide plate;

[0036] Among them, if the light guide plate processing process is the injection molding process, the light guide plate substrate material is injection molded at the injection molding process temperature to obtain a light guide plate substrate;

[0037] If the light guide plate processing technology is a compression process, the light guide plate substrate material is compression molded at the injection molding process temperature to obtain the light guide plate substrate;

[0038] Based on the dot processing technology, the light guide plate substrate is processed with dots to obtain the basic light guide plate;

[0039] If the light guide plate processing technology is a hot pressing process, the light guide plate substrate material is hot pressed at the hot pressing process temperature to obtain the basic light guide plate.

[0040] Preferably, the basic light guide plate is divided into regions according to the maximum thickness of the light guide plate, the minimum thickness of the light guide plate, and the light incident side information to obtain the basic light guide plate row region information, which specifically includes:

[0041] Based on the light guide plate detection requirements, obtain the width threshold of the light guide plate row region;

[0042] Taking the light incident side as the bottom edge, obtain the width value of the basic light guide plate;

[0043] According to the width value of the basic light guide plate and the width threshold of the light guide plate row region, obtain the initial width of the light guide plate row region;

[0044] Based on the light guide plate production standard, obtain the standard thickness of the light guide plate;

[0045] According to the maximum thickness of the light guide plate, the minimum thickness of the light guide plate, and the standard thickness of the light guide plate, obtain the thickness deviation coefficient of the light guide plate;

[0046] According to the initial width of the light guide plate row region and the thickness deviation coefficient of the light guide plate, obtain the width of the light guide plate row region;

[0047] Taking the light incident side as the initial boundary of the row region, and dividing the basic light guide plate based on the width of the light guide tube row region as a reference to obtain the basic light guide plate row region information;

[0048] Among them, the initial width of the light guide plate row region is specifically:

[0049]

[0050] In the formula, D1 represents the initial width of the light guide plate row region, D0 represents the width value of the basic light guide plate, n is a constant, and n is gradually increased until D1 ∈ [d1, d2];

[0051] The width of the light guide tube row region is specifically:

[0052]

[0053] In the formula, D is the width of the light guide tube row region, μ is the thickness deviation coefficient of the light guide plate, H min is the minimum thickness of the light guide plate, H maxis the maximum thickness of the light guide plate, and H0 is the standard thickness of the light guide plate.

[0054] Preferably, judging whether the basic light guide plate is qualified according to the light guide plate dot position information and the basic light guide plate row area information specifically includes:

[0055] Obtain the dot position information within each basic light guide plate row area according to the light guide plate dot position information and the basic light guide plate row area information;

[0056] Taking the light incident side as the bottom edge, obtain the length value of the basic light guide plate, that is, the length of the basic light guide plate row area;

[0057] Obtain the dot density information of the basic light guide plate row area according to the dot position information, the basic light guide plate length value and the basic light guide plate width value within each basic light guide plate row area;

[0058] Based on the dot density information of the basic light guide plate row area, fit the model based on the dot processing process to obtain the dot density model;

[0059] Obtain the standard dot density corresponding to each basic light guide plate row area according to the dot density model;

[0060] Obtain the difference between the dot density of each basic light guide plate row area and the standard dot density according to the dot density information of the basic light guide plate row area;

[0061] Take the basic light guide plate row area with the largest difference between the dot density and the standard dot density as the first characteristic area, and take the basic light guide plate row area with the smallest difference between the dot density and the standard dot density as the second characteristic area;

[0062] According to the first characteristic area, take the sum of the position distances between each dot in the first characteristic area and the rest of the dots as the concentration coefficient of the dot, and take the dot with the largest concentration coefficient as the first characteristic dot;

[0063] According to the second characteristic area, take the sum of the position distances between each dot in the second characteristic area and the rest of the dots as the concentration coefficient of the dot, and take the dot with the largest concentration coefficient as the second characteristic dot;

[0064] Taking the light incident side as the reference, conduct a light guide test on the first characteristic dot and the second characteristic dot to obtain the brightness of the first characteristic dot and the brightness of the second characteristic dot;

[0065] Based on the light guide plate brightness difference standard, obtain the maximum light guide plate brightness difference value;

[0066] Compare the difference between the brightness of the first characteristic dot and the brightness of the second characteristic dot with the maximum brightness difference value of the light guide plate. If the difference between the brightness of the first characteristic dot and the brightness of the second characteristic dot exceeds the maximum brightness difference value of the light guide plate, the basic light guide plate is unqualified. Adjust the dots according to the difference between the brightness of the first characteristic dot and the brightness of the second characteristic dot. If the difference between the brightness of the first characteristic dot and the brightness of the second characteristic dot does not exceed the maximum brightness difference value of the light guide plate, the basic light guide plate is qualified.

[0067] Furthermore, an intelligent control system for light guide plate production based on information collaboration is proposed to implement the above control method, including:

[0068] The main control module is used to conduct a light guide test on the first characteristic dot and the second characteristic dot with the light incident side as the reference, obtain the brightness of the first characteristic dot and the brightness of the second characteristic dot, compare the difference between the brightness of the first characteristic dot and the brightness of the second characteristic dot with the maximum brightness difference value of the light guide plate, judge whether the basic light guide plate is qualified, divide the area of the basic light guide plate according to the maximum thickness of the light guide plate, the minimum thickness of the light guide plate and the light incident side information, obtain the row area information of the basic light guide plate, obtain the maximum brightness difference value of the light guide plate based on the light guide plate brightness difference standard, and adjust the dots according to the difference between the brightness of the first characteristic dot and the brightness of the second characteristic dot;

[0069] The information acquisition module is used to obtain the light guide plate substrate material information, substrate material type information and substrate material parameter information, obtain the light guide plate forming process parameters based on the light guide plate forming process, obtain the historical production data of the light guide plate, obtain the qualified rate information and cost information corresponding to each light guide plate forming process according to the historical production data of the light guide plate, obtain the light guide plate dot position information and light incident side information according to the basic light guide plate, detect the thickness of the basic light guide plate, obtain the maximum thickness and the minimum thickness of the light guide plate, and obtain the material characteristic temperature information according to the light guide plate substrate material information;

[0070] The evaluation module is used to obtain the light guide plate forming process quality index according to the qualified rate information, process coefficient and light transmittance corresponding to each light guide plate forming process, take the light guide plate forming process with the largest light guide plate forming process quality index as the light guide plate processing process, obtain the light guide plate processing process information, fit the model based on the dot processing process according to the basic light guide plate row area dot density information, obtain the dot density model, obtain the standard dot density corresponding to each basic light guide plate row area according to the dot density model, and obtain the difference between the dot density of each basic light guide plate row area and the standard dot density;

[0071] A display module, which interacts with the main control module and is used to output and display the processing technology information of the light guide plate, the dot position information of the light guide plate, the light incident side information, the row area information of the basic light guide plate, and the dot density model.

[0072] Optionally, the main control module specifically includes:

[0073] A control unit, which is used to divide the area of the basic light guide plate according to the maximum thickness of the light guide plate, the minimum thickness of the light guide plate, and the light incident side information to obtain the row area information of the basic light guide plate, obtain the maximum brightness difference value of the light guide plate based on the light guide plate brightness difference standard, and adjust the dots according to the difference between the brightness of the first characteristic dot and the brightness of the second characteristic dot;

[0074] An information receiving unit, which interacts with the information acquisition module and the evaluation module and is used to receive data and transmit it to the judgment unit;

[0075] A judgment unit, which is used to conduct a light guide test on the first characteristic dot and the second characteristic dot with the light incident side as the reference to obtain the brightness of the first characteristic dot and the brightness of the second characteristic dot, compare the difference between the brightness of the first characteristic dot and the brightness of the second characteristic dot with the maximum brightness difference value of the light guide plate, and judge whether the basic light guide plate is qualified.

[0076] Optionally, the information acquisition module specifically includes:

[0077] A first acquisition unit, which is used to acquire the light guide plate substrate material information, the substrate material type information, and the substrate material parameter information, obtain the light guide plate forming process parameters based on the light guide plate forming process, obtain the historical production data of the light guide plate, and obtain the qualification rate information and cost information corresponding to each light guide plate forming process according to the historical production data of the light guide plate;

[0078] A second acquisition unit, which is used to obtain the dot position information of the light guide plate and the light incident side information according to the basic light guide plate, detect the thickness of the basic light guide plate to obtain the maximum thickness and the minimum thickness of the light guide plate, and obtain the material characteristic temperature information according to the light guide plate substrate material information.

[0079] Optionally, the evaluation module specifically includes:

[0080] A first evaluation unit, which is used to obtain the light guide plate forming process quality index according to the qualification rate information, the process coefficient, and the light transmittance corresponding to each light guide plate forming process, take the light guide plate forming process with the largest light guide plate forming process quality index as the light guide plate processing technology, and obtain the light guide plate processing technology information;

[0081] A second evaluation unit, which is used to fit a model based on the dot density information of the basic light guide plate row area according to the dot processing technology, obtain a dot density model, obtain the standard dot density corresponding to each basic light guide plate row area according to the dot density model, and obtain the difference between the dot density of each basic light guide plate row area and the standard dot density according to the dot density information of the basic light guide plate row area.

[0082] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0083] The present invention provides an intelligent control method and system for light guide plate production based on information collaboration. By obtaining the qualification rate information, process coefficient, and light transmittance corresponding to each light guide plate forming process, the quality index of the light guide plate forming process is obtained. Through the quality index of the light guide plate forming process, the light guide plate forming process is screened, improving the production efficiency of the light guide plate and ensuring the stability and reliability of the light guide plate. By dividing the basic light guide plate into regions, the basic light guide plate row area information is obtained, and through the basic light guide plate row area information, the quality of the light guide plate is detected, improving the detection efficiency of the light guide plate while ensuring the detection accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0084] Figure 1 It is a flowchart of an intelligent control method for light guide plate production based on information collaboration proposed by the present invention;

[0085] Figure 2 It is a flowchart for obtaining the light guide plate processing technology information in the present invention;

[0086] Figure 3 It is a flowchart for obtaining the basic light guide plate row area information in the present invention;

[0087] Figure 4 It is a flowchart for obtaining the first characteristic dot brightness and the second characteristic dot brightness in the present invention;

[0088] Figure 5 It is a structural block diagram of an intelligent control system for light guide plate production based on information collaboration proposed by the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0089] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art can think of other obvious variations.

[0090] Referring to Figure 1 - Figure 4 As shown, an intelligent control method for light guide plate production based on information collaboration in an embodiment of the present invention includes:

[0091] Obtain the light guide plate substrate material information, where the light guide plate substrate material information includes substrate material type information and substrate material parameter information;

[0092] Based on the light guide plate forming process, obtain the light guide plate forming process parameters, where the light guide plate forming process includes injection molding process, compression process, and hot pressing process;

[0093] Taking the light guide plate forming process parameters as a reference, obtain the light guide plate processing process information according to the light guide plate substrate material information;

[0094] Specifically, taking the light guide plate forming process parameters as a reference, obtain the light guide plate processing process information according to the light guide plate substrate material information, which specifically includes:

[0095] According to the light guide plate forming process parameters, obtain the light transmittance and the material ultimate light transmittance corresponding to each light guide plate forming process;

[0096] Obtain the light guide plate historical production data, where the light guide plate historical production data includes the light guide plate historical data corresponding to each light guide plate forming process;

[0097] According to the light guide plate historical production data, obtain the qualification rate information and cost information corresponding to each light guide plate forming process;

[0098] Take the proportion of the cost information corresponding to each light guide plate forming process as the process coefficient of this light guide plate forming process;

[0099] According to the qualification rate information, process coefficient, and light transmittance corresponding to each light guide plate forming process, obtain the light guide plate forming process quality index;

[0100] Take the light guide plate forming process with the largest light guide plate forming process quality index as the light guide plate processing process, and obtain the light guide plate processing process information;

[0101] Among them, the calculation formula of the light guide plate forming process quality index is:

[0102]

[0103] In the formula, Q(x) is the light guide plate forming process quality index of the x-th light guide plate forming process, L(x) represents the light transmittance of the x-th light guide plate forming process, P x represents the qualification rate of the x-th light guide plate forming process, represents the process coefficient of the x-th light guide plate forming process, L max represents the material ultimate light transmittance.

[0104] Specifically, according to the light guide plate forming process parameters, obtain the light transmittance and the material ultimate light transmittance corresponding to each light guide plate forming process, which specifically includes:

[0105] Obtain material characteristic temperature information according to the light guide plate substrate material information, where the material characteristic temperature information includes the Vicat softening temperature and the heat distortion temperature;

[0106] Based on the requirements of the light guide plate forming process parameters, use the Vicat softening temperature as the hot pressing process temperature and the heat distortion temperature as the injection molding process temperature;

[0107] Obtain the substrate material light transmittance temperature change curve according to the substrate material parameter information in the light guide plate substrate material information;

[0108] Based on the hot pressing process temperature and the injection molding process temperature, obtain the hot pressing process light transmittance and the injection molding process light transmittance according to the substrate material light transmittance temperature change curve;

[0109] Obtain the substrate material light transmittance and the material ultimate light transmittance according to the light guide plate substrate material information;

[0110] Use the substrate material light transmittance as the compression process light transmittance;

[0111] Obtain the light transmittance corresponding to each light guide plate forming process according to the hot pressing process light transmittance, the injection molding process light transmittance and the compression process light transmittance.

[0112] In this solution, through the historical production data of the light guide plate, obtain the qualification rate information and cost information corresponding to each light guide plate forming process. Use the ratio of the cost information corresponding to each light guide plate forming process as the process coefficient of the light guide plate forming process. According to the qualification rate information, process coefficient and light transmittance corresponding to each light guide plate forming process, obtain the light guide plate forming process quality index. Take the light guide plate forming process with the largest light guide plate forming process quality index as the light guide plate processing process, and obtain the light guide plate processing process information, which improves the production efficiency of the light guide plate and ensures the stability and reliability of the light guide plate quality.

[0113] It can be understood that the light transmittance is one of the key performance indicators of the light guide plate and directly affects its optical effect. By obtaining the light transmittance corresponding to each light guide plate forming process (hot pressing, injection molding, compression process light transmittance) and combining the material ultimate light transmittance, it is possible to intuitively compare the influence of different processes on the light transmittance performance of the light guide plate, which helps to produce a light guide plate with better optical performance and meet the high-quality requirements of the product in application scenarios such as lighting and display.

[0114] Based on the light guide plate processing process information, form the light guide plate substrate material to obtain the basic light guide plate;

[0115] Specifically, based on the light guide plate processing process information, form the light guide plate substrate material to obtain the basic light guide plate, which specifically includes:

[0116] Obtain the light guide plate processing parameters according to the light guide plate processing process information;

[0117] Mold the light guide plate substrate material based on the light guide plate processing parameters to obtain a basic light guide plate;

[0118] Among them, if the light guide plate processing technology is the injection molding process, then inject and mold the light guide plate substrate material at the injection molding process temperature to obtain a light guide plate substrate;

[0119] If the light guide plate processing technology is the compression process, then compress and mold the light guide plate substrate material at the injection molding process temperature to obtain a light guide plate substrate;

[0120] Based on the dot processing technology, perform dot processing on the light guide plate substrate to obtain a basic light guide plate;

[0121] If the light guide plate processing technology is the hot pressing process, then hot press and mold the light guide plate substrate material at the hot pressing process temperature to obtain a basic light guide plate.

[0122] In this solution, through the light guide plate processing technology information, obtain the light guide plate processing parameters, and mold the light guide plate substrate material based on the light guide plate processing parameters to obtain a basic light guide plate. It can be understood that hot pressing and molding is to make microstructures (such as dots) on the roller, then heat the roller, and while hot compressing the light guide plate substrate material, transfer the dots on the roller to both sides of the transparent substrate by hot transfer at the same time, directly forming a complete light guide plate without the need for separate processing of the dot structure. The light guide plate formed by hot pressing and molding is suitable for products with relatively large sizes and ultra-thin thickness requirements (such as laptops). At the same time, the front light guide plates used in EPD front light and reflective RLCD are basically formed by hot pressing and molding. For the light guide plates formed by injection molding or compression processes, further dot processing of the light guide plate is required through dot processing technologies (such as etched dots, laser dots, mechanical dot punching, screen printing dots, and hot rolling dots, etc.).

[0123] Based on the basic light guide plate, obtain the light guide plate dot position information and the light incident side information;

[0124] Detect the thickness of the basic light guide plate to obtain the maximum thickness and the minimum thickness of the light guide plate;

[0125] Based on the maximum thickness, the minimum thickness of the light guide plate, and the light incident side information, divide the basic light guide plate into regions to obtain the basic light guide plate row region information;

[0126] Specifically, based on the maximum thickness, the minimum thickness of the light guide plate, and the light incident side information, divide the basic light guide plate into regions to obtain the basic light guide plate row region information, which specifically includes:

[0127] Based on the light guide plate detection requirements, obtain the width threshold of the light guide plate row region;

[0128] Taking the light incident side as the base, obtain the basic light guide plate width value;

[0129] According to the basic light guide plate width value and the light guide plate row area width threshold, obtain the initial width of the light guide plate row area;

[0130] Based on the light guide plate production standard, obtain the standard thickness of the light guide plate;

[0131] According to the maximum thickness of the light guide plate, the minimum thickness of the light guide plate and the standard thickness of the light guide plate, obtain the light guide plate thickness deviation coefficient;

[0132] According to the initial width of the light guide plate row area and the light guide plate thickness deviation coefficient, obtain the width of the light guide plate row area;

[0133] Taking the light incident side as the initial boundary of the row area and using the width of the light guide tube row area as the benchmark, divide the basic light guide plate into areas to obtain the basic light guide plate row area information;

[0134] Among them, the initial width of the light guide plate row area is specifically:

[0135]

[0136] In the formula, D1 represents the initial width of the light guide plate row area, D0 represents the basic light guide plate width value, n is a constant, and let n increase gradually until D1 ∈ [d1, d2];

[0137] The width of the light guide tube row area is specifically:

[0138]

[0139] In the formula, D is the width of the light guide tube row area, μ is the light guide plate thickness deviation coefficient, H min is the minimum thickness of the light guide plate, H max is the maximum thickness of the light guide plate, and H0 is the standard thickness of the light guide plate.

[0140] In this solution, by obtaining the light guide plate row area width threshold and the basic light guide plate width value to determine the initial width of the light guide plate row area, it provides an initial basis for subsequent area division, making the division have a quantifiable standard, ensuring the accuracy and consistency of the division, and helping to improve the precision control in the production process. By calculating the light guide plate thickness deviation coefficient based on the maximum thickness, minimum thickness and standard thickness of the light guide plate, it can fully consider the influence of the light guide plate thickness change on the area division. Excessive thickness deviation will affect the optical performance of the light guide plate. Therefore, through the light guide plate thickness deviation coefficient, the width of the light guide tube row area is adjusted. The greater the deviation, the smaller the row area width, that is, the greater the detection accuracy, ensuring the stability of the light guide plate quality.

[0141] Based on the light guide plate dot position information and the basic light guide plate row area information, determine whether the basic light guide plate is qualified. If not, adjust the light guide plate according to the basic light guide plate row area information. If so, the basic light guide plate is qualified.

[0142] Specifically, based on the light guide plate dot position information and the basic light guide plate row area information, determine whether the basic light guide plate is qualified, which specifically includes:

[0143] Based on the light guide plate dot position information and the basic light guide plate row area information, obtain the dot position information within each basic light guide plate row area;

[0144] Taking the light incident side as the bottom edge, obtain the length value of the basic light guide plate, that is, the length of the basic light guide plate row area;

[0145] Based on the dot position information, the basic light guide plate length value, and the basic light guide plate width value within each basic light guide plate row area, obtain the dot density information of the basic light guide plate row area;

[0146] Based on the dot density information of the basic light guide plate row area, fit the model based on the dot processing technology to obtain the dot density model;

[0147] Based on the dot density model, obtain the standard dot density corresponding to each basic light guide plate row area;

[0148] Based on the dot density information of the basic light guide plate row area, obtain the difference between the dot density and the standard dot density for each basic light guide plate row area;

[0149] Take the basic light guide plate row area with the largest difference between the dot density and the standard dot density as the first characteristic area, and take the basic light guide plate row area with the smallest difference between the dot density and the standard dot density as the second characteristic area;

[0150] Based on the first characteristic area, take the sum of the position distances between each dot in the first characteristic area and the other dots as the concentration coefficient of the dot, and take the dot with the largest concentration coefficient as the first characteristic dot;

[0151] Based on the second characteristic area, take the sum of the position distances between each dot in the second characteristic area and the other dots as the concentration coefficient of the dot, and take the dot with the largest concentration coefficient as the second characteristic dot;

[0152] Taking the light incident side as the reference, conduct a light guide test on the first characteristic dot and the second characteristic dot to obtain the brightness of the first characteristic dot and the brightness of the second characteristic dot;

[0153] Based on the light guide plate brightness difference standard, obtain the maximum light guide plate brightness difference value;

[0154] Compare the difference between the brightness of the first characteristic dot and the brightness of the second characteristic dot with the maximum brightness difference value of the light guide plate. If the difference between the brightness of the first characteristic dot and the brightness of the second characteristic dot exceeds the maximum brightness difference value of the light guide plate, the basic light guide plate is unqualified. Adjust the dots according to the difference between the brightness of the first characteristic dot and the brightness of the second characteristic dot. If the difference between the brightness of the first characteristic dot and the brightness of the second characteristic dot does not exceed the maximum brightness difference value of the light guide plate, the basic light guide plate is qualified.

[0155] In this solution, by obtaining the dot position information within each row area of the basic light guide plate and calculating the dot density information, the uniformity of the dot distribution on the light guide plate can be intuitively reflected. Dot density is one of the key factors affecting the optical performance of the light guide plate. When the energy of the light entering the light guide plate is constant, the dots on the light guide plate will follow the principle that the light energy gradually attenuates as the distance becomes farther. Therefore, the dots on the light guide plate near the light incident side are sparse, the dots in the middle area of the light guide plate gradually become denser, and the dots in the tail area of the light guide plate are the densest. Only such a dot arrangement can ensure the overall brightness and uniformity of the light guide plate;

[0156] It can be understood that near the light incident side, the increase in dot density is relatively slow. As the distance increases, the speed of the increase in dot density will gradually accelerate to compensate for the attenuation of light. This non-linear dot density distribution can make more effective use of light, improve the optical performance of the light guide plate, and make the light output of the entire light guide plate more uniform. Therefore, through the dot density model, evaluate the dot density of each row area, and compare the evaluation result with the actual dot density to accurately locate the areas and dots with problems or representativeness on the light guide plate. This enables focusing on these key parts during quality inspection and problem troubleshooting, improving the efficiency and accuracy of problem discovery, avoiding a comprehensive and non-targeted inspection of the entire light guide plate, and saving time and cost.

[0157] In this embodiment, number the row areas of the basic light guide plate starting from the light incident side, that is, the first basic light guide plate row area, the second basic light guide plate row area, the third basic light guide plate row area... the nth basic light guide plate row area. Fit the model with the dot density of each basic light guide plate row area to obtain the dot density model:

[0158]

[0159] In the formula, ρ(y) represents the standard dot density of the yth basic light guide plate row area, ρ min represents the minimum dot density, ρ max represents the maximum dot density, and k is the density change coefficient obtained through data fitting.

[0160] Refer to Figure 5As shown in the figure, further, in combination with the above-mentioned intelligent control method for the production of a light guide plate based on information collaboration, an intelligent control system for the production of a light guide plate based on information collaboration is proposed, including:

[0161] A main control module, which is used to conduct a light guide test on the first characteristic dot and the second characteristic dot based on the light incident side, obtain the brightness of the first characteristic dot and the brightness of the second characteristic dot, compare the difference between the brightness of the first characteristic dot and the brightness of the second characteristic dot with the maximum brightness difference value of the light guide plate, judge whether the basic light guide plate is qualified, divide the basic light guide plate into regions according to the maximum thickness of the light guide plate, the minimum thickness of the light guide plate and the light incident side information, obtain the row region information of the basic light guide plate, obtain the maximum brightness difference value of the light guide plate based on the light guide plate brightness difference standard, and adjust the dots according to the difference between the brightness of the first characteristic dot and the brightness of the second characteristic dot;

[0162] An information acquisition module, which is used to acquire the light guide plate substrate material information, substrate material type information and substrate material parameter information, obtain the light guide plate forming process parameters based on the light guide plate forming process, obtain the historical production data of the light guide plate, obtain the qualification rate information and cost information corresponding to each light guide plate forming process according to the historical production data of the light guide plate, obtain the light guide plate dot position information and the light incident side information according to the basic light guide plate, detect the thickness of the basic light guide plate, obtain the maximum thickness and the minimum thickness of the light guide plate, and obtain the material characteristic temperature information according to the light guide plate substrate material information;

[0163] An evaluation module, which is used to obtain the light guide plate forming process quality index according to the qualification rate information, process coefficient and light transmittance corresponding to each light guide plate forming process, take the light guide plate forming process with the largest light guide plate forming process quality index as the light guide plate processing process, obtain the light guide plate processing process information, fit the model based on the dot processing process according to the dot density information of the basic light guide plate row region, obtain the dot density model, obtain the standard dot density corresponding to each basic light guide plate row region according to the dot density model, and obtain the difference between the dot density of each basic light guide plate row region and the standard dot density;

[0164] A display module, which interacts with the main control module and is used to output and display the light guide plate processing process information, the light guide plate dot position information, the light incident side information, the basic light guide plate row region information and the dot density model.

[0165] The main control module specifically includes:

[0166] A control unit, the control unit is used to divide the basic light guide plate into regions according to the maximum thickness of the light guide plate, the minimum thickness of the light guide plate and the light incident side information, obtain the basic light guide plate row region information, obtain the maximum brightness difference value of the light guide plate based on the light guide plate brightness difference standard, and adjust the dots according to the difference between the first characteristic dot brightness and the second characteristic dot brightness;

[0167] An information receiving unit, which interacts with the information acquisition module and the evaluation module to receive data and transmit it to the judgment unit;

[0168] A judgment unit is used to perform a light guiding test on the first characteristic dot and the second characteristic dot based on the light incident side, obtain the brightness of the first characteristic dot and the second characteristic dot, compare the difference between the brightness of the first characteristic dot and the brightness of the second characteristic dot with the maximum brightness difference value of the light guide plate, and judge whether the basic light guide plate is qualified.

[0169] Information acquisition module, specifically including:

[0170] a first acquisition unit, the first acquisition unit being used to acquire light guide plate substrate material information, substrate material type information and substrate material parameter information, acquire light guide plate molding process parameters based on the light guide plate molding process, acquire light guide plate historical production data, and acquire qualified rate information and cost information corresponding to each light guide plate molding process according to the light guide plate historical production data;

[0171] The second acquisition unit is used to obtain the light guide plate dot position information and light incident side information according to the basic light guide plate, detect the thickness of the basic light guide plate, obtain the maximum thickness and the minimum thickness of the light guide plate, and obtain the material characteristic temperature information according to the light guide plate substrate material information.

[0172] Assessment modules include:

[0173] a first evaluation unit, the first evaluation unit being used to obtain a light guide plate forming process quality index according to the qualified rate information, process coefficient and transmittance corresponding to each light guide plate forming process, and taking the light guide plate forming process with the largest light guide plate forming process quality index as the light guide plate processing process to obtain light guide plate processing process information;

[0174] A second evaluation unit is used to fit a model based on the dot processing technology according to the dot density information of the basic light guide plate row area to obtain a dot density model, obtain the standard dot density corresponding to each basic light guide plate row area according to the dot density model, and obtain the difference between the dot density of each basic light guide plate row area and the standard dot density according to the dot density information of the basic light guide plate row area.

[0175] In summary, the advantages of the present invention are as follows: by the qualification rate information, process coefficient, and light transmittance corresponding to each light guide plate forming process, the quality index of the light guide plate forming process is obtained. Through the quality index of the light guide plate forming process, the light guide plate forming process is screened, improving the production efficiency of the light guide plate and ensuring the stability and reliability of the light guide plate. By dividing the basic light guide plate into regions, the row region information of the basic light guide plate is obtained. Through the row region information of the basic light guide plate, the quality of the light guide plate is detected, improving the detection efficiency of the light guide plate while ensuring the detection accuracy.

[0176] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification is only the principle of the present invention. Without departing from the spirit and scope of the present invention, various changes and improvements will occur to the present invention, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. An intelligent control method for the production of light guide plates based on information collaboration, characterized in that, Including: Obtain the light guide plate substrate material information, where the light guide plate substrate material information includes substrate material type information and substrate material parameter information; Based on the light guide plate forming process, obtain the light guide plate forming process parameters, where the light guide plate forming process includes injection molding process, compression process, and hot pressing process; Taking the light guide plate forming process parameters as a reference, according to the light guide plate substrate material information, obtain the light guide plate processing process information; Based on the light guide plate processing process information, form the light guide plate substrate material to obtain a basic light guide plate; According to the basic light guide plate, obtain the light guide plate dot position information and the light incident side information; Detect the thickness of the basic light guide plate to obtain the maximum thickness and the minimum thickness of the light guide plate; According to the maximum thickness of the light guide plate, the minimum thickness of the light guide plate, and the light incident side information, divide the basic light guide plate into regions to obtain the basic light guide plate row region information; According to the light guide plate dot position information and the basic light guide plate row region information, determine whether the basic light guide plate is qualified. If not, adjust the light guide plate according to the basic light guide plate row region information. If so, the basic light guide plate is qualified.

2. The intelligent control method for the production of a light guide plate based on information collaboration according to claim 1, wherein, The step of taking the light guide plate forming process parameters as a reference and obtaining the light guide plate processing process information according to the light guide plate substrate material information specifically includes: According to the light guide plate forming process parameters, obtain the light transmittance and the material limit light transmittance corresponding to each light guide plate forming process; Obtain the light guide plate historical production data, where the light guide plate historical production data includes the light guide plate historical data corresponding to each light guide plate forming process; According to the light guide plate historical production data, obtain the qualification rate information and cost information corresponding to each light guide plate forming process; Take the ratio of the cost information corresponding to each light guide plate forming process as the process coefficient of the light guide plate forming process; According to the qualification rate information, process coefficient, and light transmittance corresponding to each light guide plate forming process, obtain the light guide plate forming process quality index; Take the light guide plate forming process with the largest light guide plate forming process quality index as the light guide plate processing process to obtain the light guide plate processing process information; Among them, the calculation formula of the light guide plate forming process quality index is: Wherein, Q(x) is the quality index of the light guide plate forming process for the x-th light guide plate forming process, L(x) represents the light transmittance of the x-th light guide plate forming process, and P x represents the qualified rate of the x-th light guide plate forming process, represents the process coefficient of the x-th light guide plate forming process, and L max represents the ultimate light transmittance of the material.

3. The intelligent control method for the production of a light guide plate based on information collaboration according to claim 2, wherein, The step of obtaining the light transmittance and the material limit light transmittance corresponding to each light guide plate forming process according to the light guide plate forming process parameters specifically includes: According to the light guide plate substrate material information, obtain the material characteristic temperature information, where the material characteristic temperature information includes the Vicat softening temperature and the heat distortion temperature; Based on the requirements of the light guide plate forming process parameters, take the Vicat softening temperature as the hot pressing process temperature and the heat distortion temperature as the injection molding process temperature; According to the substrate material parameter information in the light guide plate substrate material information, obtain the substrate material light transmittance temperature change curve; Taking the hot pressing process temperature and the injection molding process temperature as a reference, according to the substrate material light transmittance temperature change curve, obtain the hot pressing process light transmittance and the injection molding process light transmittance; According to the light guide plate substrate material information, obtain the substrate material light transmittance and the material limit light transmittance; Take the substrate material light transmittance as the compression process light transmittance; According to the hot pressing process light transmittance, the injection molding process light transmittance, and the compression process light transmittance, obtain the light transmittance corresponding to each light guide plate forming process.

4. A smart control method for the production of a light guide plate based on information collaboration according to claim 1, characterized in that, Based on the processing technology information of the light guide plate, the light guide plate substrate material is formed to obtain a basic light guide plate, which specifically includes: Obtain the processing parameters of the light guide plate according to the processing technology information of the light guide plate; Form the light guide plate substrate material based on the processing parameters of the light guide plate to obtain a basic light guide plate; Among them, if the processing technology of the light guide plate is an injection molding process, the light guide plate substrate material is injection molded at the injection molding process temperature to obtain a light guide plate substrate; If the processing technology of the light guide plate is a compression process, the light guide plate substrate material is compression molded at the injection molding process temperature to obtain a light guide plate substrate; Based on the dot processing technology, perform dot processing on the light guide plate substrate to obtain a basic light guide plate; If the processing technology of the light guide plate is a hot pressing process, the light guide plate substrate material is hot pressed at the hot pressing process temperature to obtain a basic light guide plate.

5. The intelligent control method for the production of a light guide plate based on information collaboration according to claim 1, wherein, The basic light guide plate is regionally divided according to the maximum thickness, minimum thickness and light incident side information of the light guide plate to obtain the row region information of the basic light guide plate, which specifically includes: Obtain the width threshold of the light guide plate row region based on the detection requirements of the light guide plate; Use the light incident side as the bottom edge to obtain the width value of the basic light guide plate; Obtain the initial width of the light guide plate row region according to the width value of the basic light guide plate and the width threshold of the light guide plate row region; Obtain the standard thickness of the light guide plate based on the production standard of the light guide plate; Obtain the thickness deviation coefficient of the light guide plate according to the maximum thickness, minimum thickness and standard thickness of the light guide plate; Obtain the width of the light guide plate row region according to the initial width of the light guide plate row region and the thickness deviation coefficient of the light guide plate; Use the light incident side as the initial boundary of the row region, and divide the basic light guide plate based on the width of the light guide tube row region to obtain the row region information of the basic light guide plate; Among them, the initial width of the light guide plate row region is specifically: In the formula, D1 represents the initial width of the light guide plate row region, D0 represents the width value of the basic light guide plate, n is a constant, and n is gradually increased until D1 ∈ [d1, d2]; The width of the light guide tube row region is specifically: Where D is the width of the light guide tube row area, μ is the deviation coefficient of the light guide plate thickness, H min is the minimum thickness of the light guide plate, H max is the maximum thickness of the light guide plate, and H0 is the standard thickness of the light guide plate.

6. The intelligent control method for the production of a light guide plate based on information collaboration according to claim 4, wherein Judging whether the basic light guide plate is qualified according to the dot position information of the light guide plate and the row region information of the basic light guide plate specifically includes: Obtain the dot position information in each basic light guide plate row region according to the dot position information of the light guide plate and the row region information of the basic light guide plate; Use the light incident side as the bottom edge to obtain the length value of the basic light guide plate, that is, the length of the basic light guide plate row region; Obtain the dot density information of the basic light guide plate row region according to the dot position information, length value and width value of the basic light guide plate in each basic light guide plate row region; Based on the dot density information of the basic light guide plate row region, fit the model based on the dot processing technology to obtain a dot density model; Obtain the standard dot density corresponding to each basic light guide plate row region according to the dot density model; Obtain the difference between the dot density and the standard dot density in each basic light guide plate row region according to the dot density information of the basic light guide plate row region; Take the basic light guide plate row region with the largest difference between the dot density and the standard dot density as the first characteristic region, and take the basic light guide plate row region with the smallest difference between the dot density and the standard dot density as the second characteristic region; According to the first characteristic region, the sum of the position distances between each grid point in the first characteristic region and the remaining grid points is used as the concentration coefficient of the grid point, and the grid point with the largest concentration coefficient is used as the first characteristic grid point; According to the second characteristic region, the sum of the position distances between each grid point in the second characteristic region and the remaining grid points is used as the concentration coefficient of the grid point, and the grid point with the largest concentration coefficient is used as the second characteristic grid point; Taking the light incident side as a reference, perform a light guiding test on the first characteristic grid point and the second characteristic grid point to obtain the brightness of the first characteristic grid point and the brightness of the second characteristic grid point; Based on the light guiding plate brightness difference standard, obtain the maximum brightness difference value of the light guiding plate; Compare the difference between the brightness of the first characteristic grid point and the brightness of the second characteristic grid point with the maximum brightness difference value of the light guiding plate. If the difference between the brightness of the first characteristic grid point and the brightness of the second characteristic grid point exceeds the maximum brightness difference value of the light guiding plate, then the basic light guiding plate is unqualified, and adjust the grid points according to the difference between the brightness of the first characteristic grid point and the brightness of the second characteristic grid point. If the difference between the brightness of the first characteristic grid point and the brightness of the second characteristic grid point does not exceed the maximum brightness difference value of the light guiding plate, then the basic light guiding plate is qualified.

7. An intelligent control system for the production of a light guide plate based on information collaboration, which is used to implement the control method described in any one of claims 1-6, characterized in that, Including: A main control module, which is used to take the light incident side as a reference, perform a light guiding test on the first characteristic grid point and the second characteristic grid point to obtain the brightness of the first characteristic grid point and the brightness of the second characteristic grid point, compare the difference between the brightness of the first characteristic grid point and the brightness of the second characteristic grid point with the maximum brightness difference value of the light guiding plate to determine whether the basic light guiding plate is qualified, divide the basic light guiding plate into regions according to the maximum thickness of the light guiding plate, the minimum thickness of the light guiding plate and the light incident side information to obtain the row region information of the basic light guiding plate, based on the light guiding plate brightness difference standard, obtain the maximum brightness difference value of the light guiding plate, and adjust the grid points according to the difference between the brightness of the first characteristic grid point and the brightness of the second characteristic grid point; An information acquisition module, which is used to acquire the light guiding plate substrate material information, substrate material type information and substrate material parameter information, based on the light guiding plate forming process, obtain the light guiding plate forming process parameters, obtain the light guiding plate historical production data, according to the light guiding plate historical production data, obtain the qualification rate information and cost information corresponding to each light guiding plate forming process, according to the basic light guiding plate, obtain the light guiding plate grid point position information and light incident side information, detect the thickness of the basic light guiding plate to obtain the maximum thickness and the minimum thickness of the light guiding plate, and according to the light guiding plate substrate material information, obtain the material characteristic temperature information; An evaluation module, which is used to obtain the light guiding plate forming process quality index according to the qualification rate information, process coefficient and light transmittance corresponding to each light guiding plate forming process, take the light guiding plate forming process with the largest light guiding plate forming process quality index as the light guiding plate processing process, obtain the light guiding plate processing process information, based on the grid point density information of the basic light guiding plate row region, fit the model according to the grid point processing process to obtain the grid point density model, according to the grid point density model, obtain the standard grid point density corresponding to each basic light guiding plate row region, and according to the grid point density information of the basic light guiding plate row region, obtain the difference between the grid point density of each basic light guiding plate row region and the standard grid point density; A display module, which interacts with the main control module and is used to output and display the processing technology information of the light guide plate, the dot position information of the light guide plate, the light incident side information, the basic light guide plate row area information, and the dot density model.

8. An intelligent management and control system for light guide plate production based on information collaboration according to claim 7, characterized in that, The main control module specifically includes: A control unit, which is used to divide the area of the basic light guide plate according to the maximum thickness of the light guide plate, the minimum thickness of the light guide plate, and the light incident side information to obtain the basic light guide plate row area information, obtain the maximum brightness difference value of the light guide plate based on the light guide plate brightness difference standard, and adjust the dots according to the difference between the brightness of the first characteristic dot and the brightness of the second characteristic dot; An information receiving unit, which interacts with the information acquisition module and the evaluation module and is used to receive data and transmit it to the judgment unit; A judgment unit, which is used to conduct a light guide test on the first characteristic dot and the second characteristic dot with the light incident side as the reference to obtain the brightness of the first characteristic dot and the brightness of the second characteristic dot, compare the difference between the brightness of the first characteristic dot and the brightness of the second characteristic dot with the maximum brightness difference value of the light guide plate, and judge whether the basic light guide plate is qualified.

9. An intelligent control system for the production of a light guide plate based on information collaboration according to claim 7, characterized in that, The information acquisition module specifically includes: A first acquisition unit, which is used to acquire the light guide plate substrate material information, the substrate material type information, and the substrate material parameter information, acquire the light guide plate forming process parameters based on the light guide plate forming process, acquire the historical production data of the light guide plate, and obtain the qualification rate information and cost information corresponding to each light guide plate forming process according to the historical production data of the light guide plate; A second acquisition unit, which is used to acquire the dot position information of the light guide plate and the light incident side information according to the basic light guide plate, detect the thickness of the basic light guide plate to obtain the maximum thickness and the minimum thickness of the light guide plate, and obtain the material characteristic temperature information according to the light guide plate substrate material information.

10. An intelligent control system for the production of a light guide plate based on information collaboration according to claim 7, characterized in that, The evaluation module specifically includes: A first evaluation unit, which is used to obtain the light guide plate forming process quality index according to the qualification rate information, the process coefficient, and the light transmittance corresponding to each light guide plate forming process, use the light guide plate forming process with the largest light guide plate forming process quality index as the light guide plate processing technology, and obtain the light guide plate processing technology information; A second evaluation unit, which is used to fit the model based on the dot processing technology according to the dot density information of the basic light guide plate row area to obtain the dot density model, obtain the standard dot density corresponding to each basic light guide plate row area according to the dot density model, and obtain the difference between the dot density of each basic light guide plate row area and the standard dot density according to the dot density information of the basic light guide plate row area.

Images