Variable spacer dots for touch screen

Details Variable spacer dots for touch screen Variable spacer dots for touch screen

2007-04-03

2007-04-03

Lee, K. (Department: 2832)

Electricity: circuit makers and breakers

Solid contact

Membrane type

C200S600000, C345S173000, C029S607000

Reexamination Certificate

active

10988340

ABSTRACT:
A touch screen comprising: a) a substrate; b) a first conductive layer located on the substrate; c) a flexible sheet comprising a substantially planar surface and integral compressible spacer dots formed thereon, each integral compressible spacer dot having a base closest to the substantially planar surface and a peak furthest from the substantially planar surface; and d) a second conductive layer located on the substantially planar surface of the flexible sheet, the peaks of the integral compressible spacer dots extending beyond the second conductive layer located on the substantially planar surface; wherein the first and second conductive layers are positioned towards each other and separated by the integral compressible spacer dots. The integral compressible spacer dots are sized and positioned in a pattern that establishes at least one of differentiated minimum required activation forces and differentiated durability for selected areas of the touch screen.

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patent: 1 471 415 (2004-10-01), None

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