WIRELESS COMMUNICATION DEVICE USING VOLTAGE SWITCHABLE DIELECTRIC MATERIAL

• US 20100264225A1
• Filed: 06/22/2010
• Published: 10/21/2010
• Est. Priority Date: 11/22/2005
• Status: Abandoned Application

• Current Assignee: Littelfuse Incorporated
• Original Assignee: Littelfuse Incorporated
• Inventors: Kosowsky, Lex
• Application Number:
  US12/820,956
• Publication Number:
  US 20100264225A1
• Time in Patent Office: Days
• US Class Current: 235/488
• CPC Class Codes: G06K 19/02 characterised by the selection of materials, e.g. to avoid wear during transport through the machine
• CPC Class Codes: G06K 19/0701 at least one of the integrated circuit chips comprising an arrangement for power management
• CPC Class Codes: G06K 19/0715 the arrangement including means to regulate power transfer to the integrated circuit
• CPC Class Codes: G06K 19/07735 the record carrier comprising means for protecting against electrostatic discharge
• CPC Class Codes: G06K 19/07749 the record carrier being capable of non-contact communication, e.g. constructional details of the antenna of a non-contact smart card
• CPC Class Codes: H01L 2223/6677 for antenna, e.g. antenna included within housing of semiconductor device antennas per se H01Q
• CPC Class Codes: H01L 23/60 Protection against electrostatic charges or discharges, e.g. Faraday shields
• CPC Class Codes: H01L 23/66 High-frequency adaptations
• CPC Class Codes: H01L 2924/00 Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
• CPC Class Codes: H01L 2924/0002 Not covered by any one of groups H01L24/00, H01L24/00 and H01L2224/00
• CPC Class Codes: H01L 2924/12044 OLED
• CPC Class Codes: H01L 2924/14 Integrated circuits
• CPC Class Codes: H01Q 1/2225 used in active tags, i.e. provided with its own power source or in passive tags, i.e. deriving power from RF signal
• CPC Class Codes: H01Q 7/00 Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop
• CPC Class Codes: H05K 1/0254 High voltage adaptations; Electrical insulation details; Overvoltage or electrostatic discharge protection electrostatic discharge protection for electric apparatus in general H05K9/0067, H05K9/0079; Arrangements for regulating voltages or for using plural voltages
• CPC Class Codes: H05K 1/0373 containing additives, e.g. fillers H05K1/036 takes precedence
• CPC Class Codes: H05K 2201/0738 Use of voltage responsive materials, e.g. voltage switchable dielectric or varistor materials
• CPC Class Codes: Y10T 29/49016 Antenna or wave energy "plumbing" making

Abstract

A wireless communication device, such as an RFID tag, is provided material that is dielectric, unless a voltage is applied that exceeds the materials characteristic voltage level. In the presence of such voltage, the material becomes conductive. The integration of such material into the device may be mechanical and/or electrical.

Claims

1. A wireless communication device comprising:

a package;

a substrate provided within the package;

wherein the substrate is formed by;

including a layer of material with the substrate, wherein the material has a characteristic of switching from being dielectric to being conductive when a voltage is applied to the material that exceeds a characteristic voltage level;

forming a layer of resistive material over the layer of material;

removing resistive material to form a pattern on the layer of resistive material;

applying the voltage that exceeds the characteristic voltage to the material with the layer of resistive material and the pattern;

while the voltage is applied, applying ionic media to at least a portion of the substrate to form conductive elements on the substrate where at least a portion of the pattern is provided;

one or more logic elements provided on the substrate, wherein the one or more logic elements generate data, including identification data;

a transmission component provided on the substrate that generates a signal that carries the identification information;

one or more interconnect elements to extend conductivity between the one or more logic elements and the transmission component;

wherein at least one of the logic elements, the transmission component, or one of the interconnect elements use the conductive elements formed on the substrate.

2. The device of claim 1, further comprising a power source and one or more power connect elements that extend conductivity between the power source and at least one of the transmission component or the one or more logic elements.

3. The device of claim 1, wherein at least one of the power source or the power connect elements use the conductive elements formed on the substrate.

4. The device of claim 3, wherein the power source is a receiver for receiving an applied external power signal.