Method and device for auxiliarily proceeding statistic process control in Liquid crystal screen production

Abstract

The invention provides a method for the auxiliary statistical process control in the course of the production of a liquid crystal box. The steps of the method are as follows: the process data of one or a plurality of process equipment in the course of production are obtained; the process data are resolved according to preset rules and the process data after resolved are obtained; the resolved process data are sent to a statistical process control device. The step of resolution also comprises the preprocessing operation which can be one or a plurality of the following processes: the sequencing process, the classification process, the calculation process, the accuracy process and the offset correction process. The preset rules includes: the determination of rules of particular devices, the determination of rules of particular data fields and the determination of rules of particular forms of the process data. Besides, the invention provides a device for the auxiliary statistical process control in the course of production of a liquid crystal box. The invention can effectively raise the work efficiency of monitoring the course of production of the liquid crystal box, reduce the error possibility and realize the real time monitoring of the course really and truly.

Description

technical field [0001] The invention relates to a real-time statistical process control (SPC) system, in particular to a method and device for assisting statistical process control in liquid crystal screen production. Background technique [0002] The LCD screen industry is an industry with strong demand. Correspondingly, the production and management of LCD screens is also relatively difficult. On the one hand, the manufacturing steps of LCD screens are quite complicated, and many varieties are produced at the same time and the production volume is large. On the other hand, the processing equipment and raw materials related to the production of LCD screens are expensive. Therefore, it is necessary to effectively manage the production of LCD screens to reduce Error rate, reduce scrap rate, improve production efficiency. [0003] Currently, Manufacturing Execution System (MES, Manufacturing Execution System) is commonly used in the LCD screen manufacturing industry to assist...

AI Technical Summary

Problems solved by technology

[0005] However, the existing SPC system cannot meet the requirements of the above-mentioned real-time monitoring of the LCD screen production process.

The shortcomings of the existing SPC technology are mainly as follows: all or part of the original data needs to be input or imported into the SPC software through manual input or non-automatic import, and then analyzed by the SPC software. On the one hand, it may lead to low data accuracy and poor reliability. On the other hand, in some cases, part of the process data (Process Data) has to be obtained from the equipment in the production workshop (clean room), and returned to the office system for data analysis. Such work efficiency is low, making it impossible to Really realize the demand for real-time monitoring of the LCD screen production process

In addition, technicians and managers cannot monitor the production status of all equipment in real time through the office automation system in the office, and perform real-time SPC analysis and report making

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