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14915 本文在现有资源基础上从 AOI 检测原理出发，结合量产检测的实际情况，分析在线产品的灰阶特性的影响因素发现 Mask Defect 检出率低的主要原因有以下三点 ：一是正常产品刻蚀后再做 PHT 图形，无衬底，开口区透光性高，很多Defect 特征减弱，隐藏于信号噪声中 ； Based on existing resources from AOI detection principle, combined with the actual situationof production testing, analysis the influence factors of online product characteristics of grayscale and found Mask Defect detection rate of the main causes of low has the following three points:one is the normal product etching after redo PHT graphics, no substrate, opening area transmissionof light is high, a lot of Defect characteristics is abate, hidden in the signal to noise.
14916 二是多道 Mask 图形叠加后，TFT 图形复杂，灰阶图上信号噪音的区域会变宽，当算法进行降噪滤波处理时容易将真实缺陷过滤 ； Second, after the overlay of multiple Mask patterns, the TFT pattern is complex and the signal noise area onthe gray-scale diagram will become wider. The real defects will be easily filtered when the algorithmperforms noise reduction filtering.
14917 三是 AOI 3um 检测的图形清晰度不够，导致较多缺陷未被识别出来而造成漏检。 Third, the graphics clarity detected by AOI 3UM is not enough,leading to many defects not being identified and resulting in missed detection.
14918 由此，针对 Mask Defect 检测在量产监控中存在的问题，提出了 SiO 衬底，单层曝光，1um AOI 精度检测。 Therefore, in viewof the problems existing in the mass production monitoring of Mask Defect detection, an independentMask Defect detection process with SiO, SiO substrate, single layer exposure and 1um AOI precisionwas proposed.
14919 该方案大大提升了 Mask Defect 的在线检出率，对 Mask 的日常监控管理具有重大意义。 The online defection rate of Mask defect has been greatly improved, which is of greatly significance to the daily monitoring and management of mask.
14920 南京产 MF47 型指针式万用表功能强大、灵敏度高、皮实耐用、性价比高，受到广泛好评。 Nanjing MF47 type pointer multimeter is powerful, sensitive, durable, cost-effective andwidely praised .
14921 MF47 型万用表分辨三极管的类型和三个电极（集电极 C、基极 B、发射极 E），早期产的有标志，好分辨，但近年产的除大功率三极管个别有标志外，大部分三极管、特别是小功率三极管标志缺失，给装配和维修带来一定困难。 The early products were easy to identify the three electrodes of the triode(collectorC , base B, emitter E), because they were marked. But in recent years,very few high power triodesare marked and most triodes are unmarked especially for low power triodes . And that brings somedifficulties to assembly and maintenance.
14922 特别是初学者，感到无从下手，有时集电极和发射极很难分辩。 It’s difficult to identify the collector and the emitterespecially for beginners which makes they feel at a loss.
14923 下面就 MF47 型指针式万用表分辨三极管三个电极和类型，介绍三种方法。 Here are three methods to identify the typeof the triode and the three electrodes of the triode.
14924 本文主要研究风光互补发电技术在路灯照明中的应用。 This article mainly investigate the application of wind-solar hybrid power generationtechnology in street lighting.