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DETECTION OF DEFECT OF TFT SUBSTRATE AND DEFECT INSPECTION APPARATUS
DETECTION OF DEFECT OF TFT SUBSTRATE AND DEFECT INSPECTION APPARATUS
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机译:TFT基板的缺陷的检测和缺陷检查装置
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摘要
PURPOSE: To provide a method for rapidly and surely detecting the defect elements of a TFT substrate and its defect inspection apparatus. ;CONSTITUTION: The rear surface of a TFT substrate 12 is irradiated with illuminating light L. A liquid crystal cell part 5 consisting of a liquid crystal plate 51 having polarizing films 512, 513 facing directions orthogonal with each other on its both surfaces and a grounded transparent electrode plate 52 is disposed in proximity on the front surface thereof and is provided with a line sensor 62 having photodetectors 21 and a defect detecting section 8 for the output signals S of the respective photodetectors 621. Driving voltage Vs is applied on the respective TFT elements 12a and the TFT substrate 12 is moved in the perpendicular direction of the line sensor 62. The illuminating light L is transmitted through the polarizing film 513 and is received in the photodetectors 621 by lowering or eliminating of the electric field intensity of the defective elements 12a. The output signals thereof are inputted to the defect detecting section 8, by which the respective defective elements 12a' are detected. The respective defective elements 12a' are specified by the addresses of the photodetectors 621.;COPYRIGHT: (C)1996,JPO
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机译:目的:提供一种用于快速且可靠地检测TFT基板的缺陷元素的方法及其缺陷检查设备。 ;组成:用照明光L照射TFT基板12的背面。液晶单元部分5由液晶板51组成,该液晶板51的两个表面上具有彼此垂直的偏振膜512、513,并且偏振膜512、513彼此接地。透明电极板52靠近其前表面设置,并且设有线传感器62,该线传感器62具有光电检测器21和用于各个光电检测器621的输出信号S的缺陷检测部8。驱动电压V s Sub>被施加在各个TFT元件12a上,并且TFT基板12在线传感器62的垂直方向上移动。照明光L通过偏振膜513透射并且通过降低或消除偏振而被接收在光电检测器621中。缺陷元件12a的电场强度。其输出信号输入到缺陷检测部分8,由此检测相应的缺陷元件12a′。各个缺陷元件12a′由光电检测器621的地址指定。版权所有:(C)1996,JPO
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