A Monitor Bezel having the Meta-Material EMI Shield which has the capability of varying blocking frequcy spectrum by tunable electromagnet

摘要

The EMI electromagnetic waves generated by the LED and LCD monitor electronic device panels and related internal electronic circuits, which are widely used today, are to be prevented from being radiated to the outside by manufacturing and installing a shielding film that does not affect the monitor appearance and screen. This shielding film is composed of meta-materials using electromagnetic wave absorption properties, and this shielding film alone Active for the characteristics of the radiated electromagnetic wave frequency band of EMI that is variable depending on the physical properties of the display (OLED, LDE, LCD, PDP) and the physical size, structure shape, and frequency of use of the monitor. Blocking is difficult to respond. In the present invention, an electromagnetic wave shielding film using a super scattering material meta-material is applied to an electronic device, and an electromagnet for applying a magnetic field capable of adjusting the frequency characteristic of the electromagnetic wave shielding film is attached, It has a HW/SW system that electrically controls the strength of this electromagnet that generates a magnetic field. In addition, the present invention proposes a structure that blocks electromagnetic waves reaching the user without covering the monitor screen by using a meta-material super scatterer as a shielding film in the monitor bezel area. It is a structure in which a flat electromagnet that makes the material bandgap characteristics tunable is arranged, and a circuit/SW system that controls this electromagnet is a separate circuit. We propose an electromagnetic wave shielding system as a structure that is not manufactured and is implemented by being added to the circuit/SW of the existing monitor itself.