Abstract
In high power TEA CO <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> laser system, liquid crystal display (LCD) module is a key device for display and control functions. Because of laser's harsh electromagnetic environment, LCD module coupled to the electromagnetic interference easily, leading to not work normally. This paper analyzed the interference coupling mechanism. On the basis of the analysis results, LCD module's field-line coupling is calculated by Taylor form's BLT equation. The calculation result is verified by experiment. The results show that, due to the field-line coupling, the data line of LCD module existed interference voltage, interference voltage value is 1V. The interference voltage is larger than the LCD module's noise margin. LCD module must shield the interference.
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