SE adjustment of planar mesh screen by fine-tuning metal thickness

The Journal of Engineering

Philippe Besnier¹  Cyril Dupeyrat³  Xavier Castel⁴  Yonathan Corredores⁵  Patrice Foutrel⁶ 

[1] &Defence, SAFRAN Group, 21 avenue du Gros Chêne, 95610 Eragny , France;INSA de Rennes, 20 avenue des Buttes de Coësmes, 35708 Rennes , France;Electronique et de Télécommunications de Rennes, IETR UMR-6164, IUT de Saint-Brieuc/Université de Rennes 1 , 18 rue Henri Wallon, 22004 SAINT-BRIEUC;Institut d'SAFRAN Electronics &

关键词: metal film thickness;    metal thickness values;    transparent screens;    fine-tuning metal thickness;    optical transparency;    SE adjustment;    mesh metal films;    glass substrate;    mesh screens;    planar mesh screen;    implementation techniques;    shielding effectiveness;   

DOI  :  10.1049/joe.2018.0070

学科分类：工程和技术（综合）

来源: IET

【 摘 要 】

The study presents the thickness effect of mesh metal films printed onto glass substrate on the shielding effectiveness (SE) of such transparent screens. Currently, standards in microelectronic technology use a metal film thickness of between ∼100 nm and few micrometres, depending on the available deposition and implementation techniques. This study demonstrates that the thickness of mesh metal films is a key parameter which needs to be adjusted precisely. A theoretical model based on SE, complex impedance and optical transparency has been developed for this purpose. At microwaves, a relevant selection of the metal thickness values from 0.1 to 2 µm changes the SE at low frequency (from 36 to 40 dB at 2 GHz, respectively) while maintaining it constantly at a higher frequency (close to 20 dB at 18 GHz). The optical transparency of such mesh screens is kept constant over the entire visible light spectrum (78%). Experimental data are in complete agreement with the theoretical values.

【 授权许可】

CC BY