Unlock instant, AI-driven research and patent intelligence for your innovation.

Direct application voltage variable material, components thereof and devices employing

A device and composite technology, applied in the field of piezo-change materials, can solve problems such as leaving no space, and achieve the effect of eliminating need and low cost

Inactive Publication Date: 2005-07-13
LITTELFUSE INC
View PDF3 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] Second, adding components to an existing PCB may require a board redesign or other type of incorporation into the currently pending design
If the application is already in production, considerable time may have been spent optimizing board space which may or may not have left room for integrating the VVM device

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Direct application voltage variable material, components thereof and devices employing
  • Direct application voltage variable material, components thereof and devices employing
  • Direct application voltage variable material, components thereof and devices employing

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0054] refer to figure 2 , the voltage variable material (“VVM”) 100 of the present invention includes an insulating adhesive 50 . Binder 50 secures one or more or all of certain different types of particles, such as insulating particles 60, semiconducting particles 70, doped semiconducting particles 80, conducting particles 90, and various combinations thereof. The insulating adhesive 50 has substantially adhesive properties and self-bonds to a surface such as a conductive metal surface or a non-conductive insulating surface. The insulating adhesive 50 has self-curing properties such that the VVM 100 can be applied to a circuit or application and can be used without heating to cure the VVM 100 and the insulating adhesive 50 . However, it should be appreciated that circuits or applications employing VVM 100 with adhesive 50 may be heated or cured to speed up the curing process.

[0055] In one embodiment, the insulating adhesive 50 of the VVM 100 includes a polymer or therm...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The present invention provides a voltage variable material (VVM) comprising an insulating adhesive formulated to substantially bond to conductive and non-conductive surfaces. The adhesive and thus the VVM are self-curing and can be applied in an easily spreadable form which dries before use. The adhesive eliminates the need to place the VVM in a separate device and the need for a separate printed circuit board pad that electrically connects the VVM. Adhesives and VVMs can be applied directly to many different types of substrates, such as rigid (FR-4) laminates, polyimides or polymers. VVM can also be directly applied to different types of substrates placed within the device. In one embodiment, the VVM includes doped semiconducting particles with a core, which may be silicon, and an inert coating, which may be an oxide. The particles are mixed in the binder together with the conductive particles.

Description

[0001] priority claim [0002] This application claims the benefit of U.S. Patent Application Serial No. 10 / 410,393, filed April 8, 2003, entitled "Directly Applied Pressure Changeable Materials and Devices Using Same," the entire contents of which are incorporated herein by reference and incorporated by reference. rely. [0003] Related Application Cross Reference [0004] This application is related to the following commonly owned, pending patent applications: "Polymeric Composite Materials for Electrostatic Discharge Protection," Serial No. 09 / 232,387, Attorney Docket No. 0112690-020; "Voltage-Stable Substrate Materials," Serial No. 09 / 976,964, attorney file number 0112690-098. Background of the invention [0005] The present invention relates generally to circuit protection, and in particular to voltage changeable materials. [0006] Electrical Overstress ("EOS") transients generate high electric fields and often high peak powers that temporarily or permanently disable ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H01C7/12H01C17/065H01L23/62H02H9/04H05K1/02H05K1/16
CPCH01C17/06513H01C17/06553H01C17/0656H01L23/62H01L2924/09701H01L2924/12044H01L2924/3011H02H9/044H05K1/0257H05K1/0298H05K1/167H05K2201/0224H05K2201/0272H05K2201/0738H01L2924/0002H01L2924/00
Inventor 埃得温·詹姆士·哈里斯图沙尔·维亚斯史蒂文·J·惠特尼
Owner LITTELFUSE INC