EMI shield filter and display apparatus having EMI shield filter
AssigneeNEC Corporation
InventorTakashi Yoshinaga
Life of this patent
Estimating the term…
Abstract
An EMI (ElectroMagnetic Interference) shield filter for a display unit has a conductive mesh in which a plurality of first and second conductors are arranged in horizontal and vertical directions. A gap in one of the first and second conductors is set larger than that in the other one of the first and second conductors that attenuate a field strength of higher one of horizontal and vertical polarized components of EMI of the display unit, so that the horizontal and vertical polarized components have substantially the same field strength after attenuation. A display apparatus having this EMI shield filter is also disclosed.
Claims11
An EMI (ElectroMagnetic Interference) shield filter for a display unit, having a conductive mesh in which a plurality of first and second conductors are arranged in horizontal and vertical directions, wherein
- a first gap between each two adjacent conductors of one of said first and second conductors is set larger than a second gap between each two adjacent conductors of the other one of said first and second conductors that attenuate a field strength of a higher one of horizontal and vertical polarized components of EMI of said display unit, said first gap and said second gap being selected so that the horizontal and vertical polarized components have substantially the same field strength after attenuation,
- the first gap being no greater than 50 mm.
A display apparatus comprising
- a housing incorporating said display unit and having an opening in a front surface thereof, and
- an EMI (ElectroMagentic Interference) shield filter attached to said opening and having a conductive mesh in which a plurality of first and second conductors are arranged in horizontal and vertical directions,
- wherein, in said EMI shield filter, a first gap between each two adjacent conductors of one of said first and second conductors is set larger than a second gap between each two adjacent conductors of the other one of said first and second conductors that attenuate a field strength of a higher one of horizontal and vertical polarized components of EMI of said display unit, said first gap and said second gap being selected so that the horizontal and vertical polarized components have substantially the same field strength after attenuation, the first gap being no greater than 50 mm.
Dependencies are inferred from the claim text.