LCD display screen material screening guidance system

Abstract

The invention discloses the technical field of LCD liquid crystal display screens, and is used to solve the problems that the existing inspection and screening methods for the quality of discharged materials of LCD liquid crystal display screens are still in a semi-automatic mode, the discharge efficiency is low, and screening errors and unclear discharge paths are prone to occur. In particular, an discharge screening guidance system for LCD liquid crystal display screens is disclosed, comprising a data acquisition module, a prejudgment analysis module, a magnitude discrimination module, an inspection and correction module, a discharge guidance module, a data statistics module and a display terminal; the invention performs a preliminary screening of the quality of LCD liquid crystal display screens through signal calibration, formulaic processing and magnitude discrimination, and then verifies and corrects fuzzy signals and non-definite signals, generates different path signals, and outputs discharge guidance, thereby optimizing the inspection and screening work efficiency of LCD liquid crystal display screens, effectively monitoring the discharge quality, and realizing the effect of integrated discharge screening guidance of LCD liquid crystal display screens.

Description

Technical Field

[0001] The invention relates to the technical field of LCD liquid crystal display screens, in particular to a material discharging screening and guiding system for LCD liquid crystal display screens. Background Art

[0002] LCD screens are flat and thin display devices with low power consumption and a wide range of applications. Transportation, entertainment venues, and education are all inseparable from the application of LCD screens. Therefore, the control of the factory quality inspection of LCD screens is extremely important. However, the existing inspection and screening methods for the quality of LCD screens are still semi-automatic, with a high proportion of manual visual inspection and screening, resulting in low efficiency of LCD screens, easy screening errors, and difficulty in forming an efficient discharge guidance plan;

[0003] In order to solve the above defects, a technical solution is now provided. Summary of the invention

[0004] The purpose of the present invention is to propose an LCD liquid crystal display screen discharge screening guidance system in order to solve the problems that the existing inspection and screening methods for the discharge quality of LCD liquid crystal display screens are still semi-automatic, the discharge efficiency is low, and there are easy screening errors and unclear discharge paths.

[0005] The purpose of the present invention can be achieved by the following technical solutions:

[0006] The material discharging screening and guiding system of the LCD display screen includes a data acquisition module, a prejudgment analysis module, a magnitude discrimination module, a test and correction module, a material discharging guiding module, a data statistics module and a display terminal;

[0007] The data acquisition module is used to collect basic data and appearance data of each LCD display screen at the discharging point, and send it to the pre-judgment analysis module;

[0008] The prejudgment analysis module is used to perform a preliminary data analysis operation on the collected basic data and appearance data of each LCD liquid crystal display screen, and obtain a first preliminary judgment value A based on the data. i , the second initial judgment value B i and quality evaluation value P, and send the quality evaluation value P to the magnitude determination module, and the first initial judgment value A i and the second initial judgment value B i Send to the inspection and correction module;

[0009] The magnitude discrimination module is used to perform magnitude discrimination analysis on the received quality evaluation value P and its preset range K′, and obtain a positive signal, a fuzzy signal and an indefinite signal accordingly, and send the positive signal to the material discharging guidance module, and send the fuzzy signal and the indefinite signal to the inspection and correction module;

[0010] The inspection and correction module is used to identify and correct the acquired fuzzy signals and the LCD display screen of the non-fixed signal. The specific operation steps are as follows:

[0011] Xz1: When a fuzzy signal or an uncertain signal is received, the first initial judgment value A obtained by the prediction analysis module is retrieved accordingly. i and the second initial judgment value B i ;

[0012] Xz2: The first predicted value A i and the second prediction value B i Performing comparison and analysis operations on the corresponding preset ranges K1 and K2 respectively, and obtaining the basic level signal and the appearance level signal accordingly;

[0013] Xz3: perform collective calibration processing on the base level signal and the appearance level signal to obtain an A+ signal, an A- signal or an A+- signal, and send it to the discharge guidance module;

[0014] The material discharging guidance module is used to perform material discharging guidance operations on the received affirmative signal, A+ signal, A- signal and A+- signal, thereby generating a factory-outgoing path guidance signal, a factory-returning path guidance signal and a to-be-detected path guidance signal, and sending them to the data statistics module;

[0015] The data statistics module is used to count the material discharging conditions of the LCD display screen within a unit time, and send the statistics to the display terminal in the form of charts and texts for reference by the staff.

[0016] Furthermore, the basic data and appearance data are subjected to preliminary data analysis. The specific operation steps are as follows:

[0017] S1: Real-time acquisition of basic data of each LCD display screen at the discharging point within a unit time, and the basic data includes environmental calibration value, straightness, size and power consumption rate, and calibrates them as L i , Q i , C i and H i , quantify the environmental standard value, straightness, size and power consumption rate, extract the values ​​of environmental standard value, straightness, size and power consumption rate, and substitute them into the formula. Obtain the first predicted value A of each LCD display screen per unit time i, where a1, a2, a3 and a4 are the environmental standard values ​​L i , straightness Q i , Size C i and power consumption rate H i The discriminant factor coefficient of , and a4>a3>a1>a2>0;

[0018] S2: Real-time acquisition of the appearance data of each LCD display screen at the discharging point within a unit time, and the appearance data includes the number of bad pixels, color resolution and softness rate, and calibrates them as V i , Z i and U i , quantify the number of bad pixels, color resolution and softness rate, extract the values ​​of the number of bad pixels, color resolution and softness rate, and substitute them into the formula. Obtain the second prediction value B of each LCD display screen per unit time i , where b1, b2 and b3 are the number of bad pixels V i , color resolution Z i and soft rate U i The error factor coefficient is b1>b2>b3>0;

[0019] S3: Quantify the first prediction value and the second prediction value, extract the values ​​of the first prediction value and the second prediction value, and substitute them into the formula. The quality evaluation value P of the LCD display screen per unit time is obtained, where p1 and p2 are the first prediction value A i and the second prediction value B i Correction factor coefficient, and p2>p1>0.

[0020] Furthermore, the quality safety value P and its preset range K′ are subjected to discriminant analysis. The specific operation steps are as follows:

[0021] When the quality safety value P is greater than the maximum value of the preset range K′, a positive signal is generated; when the quality safety value P is within the preset range K′, a fuzzy signal is generated; when the quality safety value P is less than the minimum value of the preset range K′, a non-definite signal is generated.

[0022] Furthermore, the specific operation steps of the comparison analysis operation are as follows:

[0023] Bd1: The first predicted value A i Compare with the preset value K1, when the first predicted value A i When the first prediction value A is greater than or equal to the preset value K1, a performance superiority signal is generated. iWhen it is less than the preset value K1, a performance deficiency signal is generated, and the superior performance signal and the performance deficiency signal are calibrated as basic level signals;

[0024] Bd2: The second predicted value B i Compare with the preset value K2, when the second predicted value B i When the second prediction value B is greater than the preset value K2, an appearance defect signal is generated. i When it is less than or equal to the preset value K2, an appearance excellent signal is generated, and the appearance defect signal and the appearance excellent signal are calibrated as the appearance level signal;

[0025] Bd3: The generated base level signal and appearance level signal are collectively calibrated.

[0026] Furthermore, the specific operation steps of the set calibration process are as follows:

[0027] The basic level signal and the appearance level signal are collectively cross-processed. When both the excellent performance signal and the excellent appearance signal are obtained at the same time, they are calibrated as A+ signals. When both the poor performance signal and the poor appearance signal are obtained at the same time, they are calibrated as A- signals. Other cross-situations are calibrated as A+- signals. The A+ signals, A- signals and A+- signals obtained after the collective cross-processing are sent to the discharge guidance module.

[0028] Furthermore, the specific operation steps of the discharge guidance operation are as follows:

[0029] When an affirmative signal and an A+ signal are received, a factory path guidance signal is generated; when an A- signal is received, a return path guidance signal is generated; and when an A+- signal is received, a to-be-detected path guidance signal is generated.

[0030] Compared with the prior art, the present invention has the following beneficial effects:

[0031] 1. Through signal calibration, formulaic calculation processing and magnitude discrimination analysis operations, the guidance signal for judging the quality of LCD screens can be quickly obtained, and qualified LCD screens can be preliminarily and quickly screened out, and the guidance signal for the factory path can be output. While realizing the rapid inspection and screening of the output quality of LCD screens, the screening efficiency is also improved and the error rate is reduced;

[0032] 2. Verify and correct the LCD screen containing fuzzy signals and non-definite signals obtained in the magnitude discrimination analysis operation. Through parameter calling, value comparison, signal calibration and set calibration and other processing operations, the fuzzy signal and non-definite signal are further verified and corrected. The corrected LCD screen is recalibrated for the discharge guide signal, and the discharge of the LCD screen is guided and output according to different path signals. The quality of the discharge of the LCD screen is effectively monitored and corrected. While improving the inspection and screening efficiency of the LCD screen, the integrated discharge screening guide effect of the LCD screen is also achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to facilitate understanding by those skilled in the art, the present invention is further described below in conjunction with the accompanying drawings;

[0034] Figure 1 It is the overall block diagram of the system of the present invention;

[0035] Figure 2 This is a processing path block diagram of the first embodiment of the present invention;

[0036] Figure 3 This is a processing path block diagram of the second embodiment of the present invention. DETAILED DESCRIPTION

[0037] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] Embodiment 1:

[0039] like Figure 1 and Figure 2 As shown, the material discharging screening and guiding system of the LCD display screen includes a data acquisition module, a prejudgment analysis module, a magnitude discrimination module, a test and correction module, a material discharging guiding module, a data statistics module and a display terminal;

[0040] The data acquisition module is used to collect the basic data and appearance data of each LCD screen at the discharging point, and send it to the prejudgment analysis module, wherein the basic data is used to represent the basic performance data of the LCD screen. The larger the performance value of the basic data is, the better the performance of the LCD screen is. The appearance data is used to represent the fault data of the LCD screen. The smaller the performance value of the appearance data is, the fewer faults there are in the LCD screen.

[0041] The prejudgment analysis module is used to perform preliminary data analysis on the collected basic data and appearance data of each LCD display screen. The specific preliminary analysis operations are as follows:

[0042] S1: Real-time acquisition of basic data of each LCD display screen at the discharging point within a unit time, and the basic data includes environmental calibration value, straightness, size and power consumption rate, and calibrates them as L i , Q i , C i and H i , quantify the environmental standard value, straightness, size and power consumption rate, extract the values ​​of environmental standard value, straightness, size and power consumption rate, and substitute them into the formula. Obtain the first predicted value A of each LCD display screen per unit time i , where a1, a2, a3 and a4 are the environmental standard values ​​L i , straightness Q i , Size C i and power consumption rate H i The discriminant factor coefficient of , and a4>a3>a1>a2>0, a1+a2+a3+a4=4.263;

[0043] Among them, the pre-judgment analysis module can quickly prioritize and output LCD screens with qualified quality, and screen and guide LCD screens with questionable quality. The unit time represents a time period of one day, and the discrimination factor coefficient is convenient for the environmental standard value L i , straightness Q i , Size C i and power consumption rate H i The relationship between is converted, and the first prediction value A is obtained by calculation i , and through the first predicted value A i The performance value of the LCD display is used to predict the performance of the LCD display. When the first prediction value A i The larger it is, the better the performance of the LCD display.

[0044] It should be noted that the environmental value L i Used to represent the conversion parameter value of the application environment of the LCD display screen, the environmental standard value L i The larger the performance value, the better, and the environmental standard value L i Including brightness and temperature width, and calibrated as Ld i and Wk i , quantify the brightness and temperature width, extract the values ​​of brightness and temperature width, and substitute them into the formula. Obtain the environmental rating value L of the LCD display i, where e1 and e2 are the conversion factors of brightness and temperature width respectively, and e1>e2>0, e1+e2=1.3, and brightness is used to reflect the clarity of the LCD screen, and temperature width indicates the range of ambient temperature that the LCD screen can adapt to;

[0045] The straightness Q i Used to indicate the curvature of the LCD screen, size C i Including the size and weight of the LCD display, power consumption rate H i Used to measure the power consumption of LCD display screen, power consumption rate H i The higher the performance value, the greater the power consumption of the LCD display.

[0046] S2: Real-time acquisition of the appearance data of each LCD display screen at the discharging point within a unit time, and the appearance data includes the number of bad pixels, color resolution and softness rate, and calibrates them as V i , Z i and U i , quantify the number of bad pixels, color resolution and softness rate, extract the values ​​of the number of bad pixels, color resolution and softness rate, and substitute them into the formula. Obtain the second prediction value B of each LCD display screen per unit time i , where b1, b2 and b3 are the number of bad pixels V i , color resolution Z i and soft rate U i The error factor coefficient is used to reduce the number of bad pixels V. i , color resolution Z i and soft rate U i The error between the calculations and the second prediction value B i Used to measure the magnitude of the appearance fault value of the LCD display. When the second prediction value B i The closer it is to zero, the higher the integrity of the LCD screen appearance.

[0047] It should be noted that the number of bad pixels V i It is used to indicate the pixels on the LCD screen that are continuously lit and do not receive the extinguishing signal. i The larger the value, the more bad pixels there are on the LCD screen, and the color resolution is i Used to indicate the precision of LCD display images. When the color resolution is Z i The higher the performance value, the finer the image is displayed, and the softer the U iUsed to indicate the softness of the LCD display screen, the softness rate U i The higher it is, the better the LCD display effect is.

[0048] S3: Quantify the first prediction value and the second prediction value, extract the values ​​of the first prediction value and the second prediction value, and substitute them into the formula. The quality evaluation value P of the LCD display screen per unit time is obtained, where p1 and p2 are the first prediction value A i and the second prediction value B i The correction factor coefficient, and p2>p1>0, p1+p2=4.19, it should be noted that the quality evaluation value P is used to measure and judge the qualified value of the output of the LCD liquid crystal display screen, and the performance value of the quality evaluation value P is proportional to the quality rating of the LCD liquid crystal display screen, that is, the higher the performance value of the quality evaluation value P, the higher the quality rating of the LCD liquid crystal display screen, and the correction factor coefficient is used to adjust the first prejudgment value A in the calculation process. i and the second prediction value B i The value of is corrected to further improve the accuracy of the quality assessment value P;

[0049] S4: Send the obtained quality evaluation value P to the magnitude determination module;

[0050] The magnitude discrimination module is used to perform magnitude discrimination analysis on the received quality evaluation value P and its preset range K′. The specific operation steps are as follows:

[0051] When the quality safety value P is greater than the maximum value of the preset range K', a positive signal is generated; when the quality safety value P is within the preset range K', a fuzzy signal is generated; when the quality safety value P is less than the minimum value of the preset range K', an indeterminate signal is generated, and the generated positive signal is sent to the discharge guidance module;

[0052] It should be noted that the positive signal indicates that the quality of the LCD screen is qualified and meets the operation signal for subsequent discharging, the fuzzy signal indicates that the quality of the LCD screen may or may not have problems, so further screening is required, and the indefinite signal indicates that the quality of the LCD screen is unqualified, but further screening is still required;

[0053] The discharge guidance module is used to perform a discharge guidance operation on the received affirmative signal. The specific operation steps are as follows: when the affirmative signal is received, a discharge path guidance signal is generated accordingly, and the LCD display screen is guided to perform a discharge operation, thereby realizing a fast discharge guidance of the LCD display screen, wherein the discharge path guidance signal represents a path signal for guiding the fast discharge of the LCD display screen that meets the quality standards;

[0054] The data statistics module is used to make statistics on the number of factory route guidance signals, return route guidance signals and to-be-detected route guidance signals of several LCD screens within a unit time, and send them to the display terminal in the form of charts and texts for reference by the staff;

[0055] It should be noted that the chart method can use bar charts and pie charts to count the number of factory-exit path guidance signals, the number of return-to-factory path guidance signals, and the number of to-be-detected path guidance signals per unit time, and analyze the proportion of the number of factory-exit path guidance signals, the number of return-to-factory path guidance signals, and the number of to-be-detected path guidance signals to obtain the quality evaluation text of the LCD display screen per unit time, and generate text words such as "the factory-exit plan of the LCD display screen within the specified time is relatively good", "the factory-exit plan of the LCD display screen within the specified time is average", and "the factory-exit plan of the LCD display screen within the specified time is relatively poor";

[0056] The basic data and appearance data of each LCD screen at the discharging point are collected through the data acquisition module, and then the first initial judgment value A to measure the performance of the LCD screen is obtained through signal calibration and formula calculation processing. i , and the second prediction value B for evaluating the appearance integrity of the LCD display screen i , and a quality assessment value P for judging the eligibility of the output material of the LCD liquid crystal display screen, and a magnitude discrimination analysis operation is performed on the quality assessment value P and the preset range K′, and the qualified LCD liquid crystal display screens are preliminarily and quickly screened out, and the factory path guidance signal is output, and the output signal is statistically analyzed, which can realize the rapid inspection and screening of the output quality of the LCD liquid crystal display screen, and also improve the screening efficiency and reduce the error rate.

[0057] Embodiment 2:

[0058] like Figure 1 and Figure 3 As shown, after the magnitude discrimination module performs magnitude discrimination analysis on the quality assessment value P and its preset range K′, when a fuzzy signal and an indefinite signal are generated, the fuzzy signal and the indefinite signal are sent to the inspection and correction module. It should be noted that the inspection and correction module is used to re-verify and correct the uncertain signal generated after the magnitude judgment;

[0059] The inspection and correction module is used to identify and correct the quality of the LCD display screen with fuzzy signals and non-fixed signals. The specific operation steps are as follows:

[0060] Xz1: When a fuzzy signal or an uncertain signal is received, the first initial judgment value A obtained in the prediction analysis module is retrieved accordingly. iand the second initial judgment value B i ;

[0061] Xz2: The first predicted value A i and the second prediction value B i The corresponding preset ranges K1 and K2 are compared and analyzed respectively. The specific operation steps are as follows:

[0062] Bd1: The first predicted value A i Compare with the preset value K1, when the first predicted value A i When the first prediction value A is greater than or equal to the preset value K1, a performance superiority signal is generated. i When it is less than the preset value K1, a performance deficiency signal is generated, and the superior performance signal and the performance deficiency signal are calibrated as basic level signals;

[0063] Bd2: The second predicted value B i Compare with the preset value K2, when the second predicted value B i When the second prediction value B is greater than the preset value K2, an appearance defect signal is generated. i When it is less than or equal to the preset value K2, an appearance excellent signal is generated, and the appearance defect signal and the appearance excellent signal are calibrated as the appearance level signal;

[0064] Bd3: Perform collective calibration on the generated base level signal and appearance level signal. The specific steps are as follows:

[0065] When both excellent performance and excellent appearance signals are obtained, they are calibrated as A+ signals. When both poor performance and poor appearance signals are obtained, they are calibrated as A- signals. In other cases, they are all calibrated as A+- signals.

[0066] It should be noted that the A+ signal, A- signal and A+- signal are all auxiliary determination signals, which are used to assist in the quality assessment of the LCD display screen. Specifically, the A+ signal is used to indicate that the quality of the LCD display screen is qualified, the A- signal is used to indicate that the quality of the LCD display screen is unqualified, and the A+- signal is used to indicate that the quality of the LCD display screen needs more in-depth testing.

[0067] Xz3: Send A+ signal or A- signal or A+- signal to the discharge guidance module;

[0068] The discharge guidance module performs discharge guidance operations according to the received A+ signal, A- signal and A+- signal. The specific operation steps are as follows:

[0069] When an A+ signal is received, a factory route guidance signal is generated; when an A- signal is received, a return route guidance signal is generated; and when an A+- signal is received, a to-be-detected route guidance signal is generated;

[0070] Verify and correct the LCD display screen containing fuzzy signals and non-determined signals obtained by the magnitude discrimination module, and call the pre-judgment analysis module to obtain the first initial judgment value A. i and the second initial judgment value B i , and through numerical comparison, signal calibration and set calibration processing, further verification and correction of suspicious fuzzy signals and non-determined signals are carried out, and A+ signal, A- signal and A+- signal are auxiliary judged, and the discharge guidance operation signal of the corrected LCD display is calibrated, and the discharge guidance output of the LCD display is carried out according to different path signals, and the output signal is statistically analyzed, so as to effectively monitor the discharge quality of the LCD display, improve the inspection and screening efficiency of the LCD display, and realize the effect of integrated discharge screening guidance of the LCD display.

[0071] Embodiment three:

[0072] like Figure 1 As shown, the basic data and appearance data of each LCD display screen at the discharging point are first collected through the data collection module, and then sent to the pre-judgment analysis module;

[0073] The prejudgment analysis module performs preliminary data analysis on the collected basic data and appearance data of each LCD display screen, and obtains the first preliminary judgment value A accordingly. i , the second initial judgment value B i and quality evaluation value P, and send the quality evaluation value P to the magnitude determination module, and the first initial judgment value A i and the second initial judgment value B i Send to the inspection and correction module;

[0074] The magnitude discrimination module is used to perform magnitude discrimination analysis on the received quality evaluation value P and its preset range K′, and obtain a positive signal, a fuzzy signal and an indefinite signal accordingly, and send the positive signal to the material discharging guidance module, and send the fuzzy signal and the indefinite signal to the inspection and correction module;

[0075] The inspection and correction module is used to identify and correct the acquired fuzzy signals and non-fixed signals of the LCD display. The specific operation steps are as follows:

[0076] Xz1: When a fuzzy signal or an uncertain signal is received, the first initial judgment value A obtained by the prediction analysis module is retrieved accordingly. i and the second initial judgment value B i;

[0077] Xz2: The first predicted value A i and the second prediction value B i Performing comparison and analysis operations on the corresponding preset ranges K1 and K2 respectively, and obtaining the basic level signal and the appearance level signal accordingly;

[0078] Xz3: perform collective calibration processing on the base level signal and the appearance level signal to obtain an A+ signal, an A- signal or an A+- signal, and send it to the discharge guidance module;

[0079] The material discharging guidance module is used to perform material discharging guidance operations on the received affirmative signal, A+ signal, A- signal and A+- signal, thereby generating a factory-outgoing path guidance signal, a return-to-factory path guidance signal and a to-be-detected path guidance signal, and sending them to the data statistics module;

[0080] The data statistics module is used to count the material discharging situation of the LCD display screen within a unit time, and send it to the display terminal in the form of charts and texts for reference by the staff;

[0081] First, by collecting the basic data and appearance data of the LCD display screen, and performing preliminary analysis operations, numerical calibration and formulaic calculation are used to obtain the predicted values ​​of the quality assessment of each level of the LCD display screen, and the predicted values ​​of the quality assessment of each level are further processed by magnitude discrimination analysis, and the LCD display screen with the positive signal obtained by the magnitude processing is directly sent to the discharging guidance module for discharging operation, and the fuzzy signal and the non-definite signal of the LCD display screen obtained by the magnitude processing are sent to the inspection and correction module for further verification and correction operations, and the LCD display screen is further verified by auxiliary judgment of A+ signal, A- signal and A+- signal, and the discharging guidance operation signal of the corrected LCD display screen is calibrated, and the discharging guidance output of the LCD display screen is performed according to different path signals, and the output signal is statistically analyzed, while effectively monitoring the quality of the discharging of the LCD display screen, and optimizing the work efficiency of the inspection and screening of the LCD display screen, and realizing the effect of the integrated discharging screening guidance of the LCD display screen.

[0082] The above formulas are all obtained by collecting a large amount of data and performing software simulation, and a formula close to the actual value is selected. The coefficients in the formula are set by technicians in this field according to actual conditions.

[0083] When the present invention is used, the basic data and appearance data of each LCD display screen at the discharging point are collected through the data collection module, and then the first initial judgment value A for measuring the performance of the LCD display screen is obtained through signal calibration and formulaic calculation processing.i , and the second prediction value B for evaluating the appearance integrity of the LCD display screen i , and a quality evaluation value P for judging the eligibility of the output material of the LCD liquid crystal display screen, and the quality evaluation value P and the preset range K′ are subjected to magnitude discrimination analysis operation, and the qualified LCD liquid crystal display screen is preliminarily and quickly screened out, and the outgoing path guidance signal is output, and the output signal is statistically analyzed, while realizing the rapid inspection and screening of the output quality of the LCD liquid crystal display screen, the screening efficiency is also improved and the error rate is reduced;

[0084] Verify and correct the LCD display screen containing fuzzy signals and non-determined signals obtained by the magnitude discrimination module, and call the pre-judgment analysis module to obtain the first initial judgment value A. i and the second initial judgment value B i , and through numerical comparison, signal calibration and set calibration processing, further verification and correction of suspicious fuzzy signals and non-determined signals are carried out, and A+ signal, A- signal and A+- signal are auxiliary judged, and the discharge guidance operation signal of the corrected LCD display is calibrated, and the discharge guidance output of the LCD display is carried out according to different path signals, and the output signal is statistically analyzed, so as to effectively monitor the discharge quality of the LCD display, improve the inspection and screening efficiency of the LCD display, and realize the effect of integrated discharge screening guidance of the LCD display.

[0085] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. The material screening and guiding system of LCD display screen is characterized by: It includes data collection module, pre-judgment analysis module, magnitude determination module, inspection and correction module, material discharging guidance module, data statistics module and display terminal; The data acquisition module is used to collect basic data and appearance data of each LCD display screen at the discharging point, and send it to the pre-judgment analysis module; The prejudgment analysis module is used to perform a preliminary data analysis operation on the collected basic data and appearance data of each LCD liquid crystal display screen, and obtain a first preliminary judgment value A based on the data. i , the second initial judgment value B i and quality evaluation value P, and send the quality evaluation value P to the magnitude determination module, and the first initial judgment value A i and the second initial judgment value B i Send to the inspection and correction module; The magnitude discrimination module is used to perform magnitude discrimination analysis on the received quality evaluation value P and its preset range K′, and obtain a positive signal, a fuzzy signal and an indefinite signal accordingly, and send the positive signal to the material discharging guidance module, and send the fuzzy signal and the indefinite signal to the inspection and correction module; The inspection and correction module is used to identify and correct the acquired fuzzy signals and the LCD display screen of the non-fixed signal. The specific operation steps are as follows: Xz1: When a fuzzy signal or an uncertain signal is received, the first initial judgment value A obtained by the prediction analysis module is retrieved accordingly. i and the second initial judgment value B i ; Xz2: The first predicted value A i and the second prediction value B i Performing comparison and analysis operations on the corresponding preset ranges K1 and K2 respectively, and obtaining the basic level signal and the appearance level signal accordingly; Xz3: perform collective calibration processing on the base level signal and the appearance level signal to obtain an A+ signal, an A- signal or an A+- signal, and send it to the discharge guidance module; The material discharging guidance module is used to perform material discharging guidance operations on the received affirmative signal, A+ signal, A- signal and A+- signal, thereby generating a factory-outgoing path guidance signal, a factory-returning path guidance signal and a to-be-detected path guidance signal, and sending them to the data statistics module; The data statistics module is used to count the material discharging situation of the LCD display screen within a unit time, and send it to the display terminal in the form of charts and texts for reference by the staff; The specific steps for performing preliminary analysis of basic data and appearance data are as follows: S1: Real-time acquisition of basic data of each LCD display screen at the discharging point within a unit time, and the basic data includes environmental calibration value, straightness, size and power consumption rate, and calibrates them as L i , Q i , C i and H i , according to the formula Obtain the first predicted value A of each LCD display screen per unit time i , where a1, a2, a3 and a4 are the environmental standard values ​​L i , straightness Q i , Size C i and power consumption rate H i The discriminant factor coefficient of , and a4>a3>a1>a2>0; S2: Real-time acquisition of the appearance data of each LCD display screen at the discharging point within a unit time, and the appearance data includes the number of bad pixels, color resolution and softness rate, and calibrates them as V i , Z i and U i , according to the formula Obtain the second prediction value B of each LCD display screen per unit time i , where b1, b2 and b3 are the number of bad pixels V i , color resolution Z i and soft rate U i The error factor coefficient is b1>b2>b3>0; S3: According to the formula The quality evaluation value P of the LCD display screen per unit time is obtained, where p1 and p2 are the first prediction value A i and the second prediction value B i The correction factor coefficient is p2>p1>0; The quality safety value P and its preset range K′ are subjected to discriminant analysis. The specific operation steps are as follows: When the quality safety value P is greater than the maximum value of the preset range K', a positive signal is generated; when the quality safety value P is within the preset range K', a fuzzy signal is generated; when the quality safety value P is less than the minimum value of the preset range K', an indeterminate signal is generated; The specific steps of the comparison analysis operation are as follows: Bd1: The first predicted value A i Compare with the preset value K1, when the first predicted value A i When the first prediction value A is greater than or equal to the preset value K1, a performance superiority signal is generated. i When it is less than the preset value K1, a performance deficiency signal is generated, and the superior performance signal and the performance deficiency signal are calibrated as basic level signals; Bd2: The second predicted value B i Compare with the preset value K2, when the second predicted value B i When the second prediction value B is greater than the preset value K2, an appearance defect signal is generated. i When it is less than or equal to the preset value K2, an appearance excellent signal is generated, and the appearance defect signal and the appearance excellent signal are calibrated as the appearance level signal; Bd3: The generated base level signal and appearance level signal are collectively calibrated to obtain A+ signal, A- signal and A+- signal; The specific steps of the collective calibration process are as follows: The basic level signal and the appearance level signal are collectively cross-processed. When both the excellent performance signal and the excellent appearance signal are obtained at the same time, they are calibrated as A+ signals. When both the poor performance signal and the poor appearance signal are obtained at the same time, they are calibrated as A- signals. Other cross-situations are calibrated as A+- signals. The A+ signals, A- signals and A+- signals obtained after the collective cross-processing are sent to the discharge guidance module.

2. The material discharging screening and guiding system of the LCD display screen according to claim 1, characterized in that: The specific steps of the discharge guidance operation are as follows: When an affirmative signal and an A+ signal are received, a factory path guidance signal is generated; when an A- signal is received, a return path guidance signal is generated; and when an A+- signal is received, a to-be-detected path guidance signal is generated.

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