
Comparative Analysis of Emitted Magnetic Fields from Liquid Crystal Display (LCD) and Light Emitting Diode (LED) System
Author(s) -
Bodunrin Isa Bakare,
Victor T. Taol,
Sunny Orike
Publication year - 2020
Publication title -
european journal of electrical engineering and computer science
Language(s) - English
Resource type - Journals
ISSN - 2736-5751
DOI - 10.24018/ejece.2020.4.2.203
Subject(s) - liquid crystal display , light emitting diode , magnetic field , diode , liquid crystal , materials science , optoelectronics , perpendicular , metre , optics , physics , geometry , mathematics , quantum mechanics , astronomy
This paper present the Comparative analysis of emitted magnetic fields from Liquid Crystal Display(LCD) and that of Light Emitting Diode (LED) system. A total of eighteen Liquid Crystal Display and Light Emitting Diode Monitors from different manufacturers were used. The magnetic field was measured using a trifield guass meter. The trifield guass meter was placed perpendicularly to the monitors at 5cm steps from the monitor up to 70cm and the magnetic field from each monitor was recorded in milligauss. The result showed that the magnetic field of the liquid crystal display monitors is almost 2 times greater than that of the light-emitting diode monitors. The obtained results were compared with international occupational and general public recommended exposure limit and The result was found to be below the permissible dose limit according to the IEEE( Institute of Electrical and Electronics Engineering) standard. Although there is minimal evidence of the health risk associated with the use of Visual Display Units (VDUs) and it is inconclusive.”