LCD having noise counteracting parallel resonant circuit

• US 5,990,625 A
• Filed: 09/30/1997
• Issued: 11/23/1999
• Est. Priority Date: 09/30/1996
• Status: Expired due to Term

• Current Assignee: Siemens Healthcare GMBH (Siemens AG)
• Original Assignee: Siemens AG
• Inventors: Kuth, Rainer, Meissner, Ralph, Pritzel, Wolfgang
• Primary Examiner(s): Bettendorf, Justin P.
• Application Number:
  US08/940,466
• Time in Patent Office: 784 Days
• Field of Search: 315/8, 315/85, 349/59, 348/819, 348/820
• US Class Current: 315/85
• CPC Class Codes: G01R 33/28 Details of apparatus provided for in groups G01R33/44 - G01R33/64
• CPC Class Codes: H04B 15/00 Suppression or limitation of noise or interference by means associated with receiver H04B1/10

Abstract

In an electrical assembly with an electrical or electronic component part that generates a noise signal with a disturbing frequency, a parallel resonant circuit tuned to the frequency is arranged in the immediate proximity of the component part.

Claims

1. In an electrical assembly with an LCD module with a display surface that generates noise signals with a disturbing frequency, the improvement comprising a parallel resonant circuit tuned to the frequency which is arranged in the immediate proximity of the LCD module, the parallel resonant circuit comprising a frame coil, the LCD module being surrounded by an electrical shielding, the electrical shielding comprises an opening, the opening being covered with an electrically conductive fabric which is electrically connected to the shielding, and the opening being founded by the frame coil.

2. In the electrical assembly according to claim 1, characterized in that the frame coil is rectangular.

3. In the electrical assembly of claim 1, the electrically conductive fabric is a platinum fabric.