Stress relief for rigid components on flexible circuits
AssigneeMultek Technologies Limited
InventorsMark Bergman, Michael James Glickman
Life of this patent
Estimating the term…
Abstract
In order to limit the stress and strain applied to a printed circuit board while still maintaining flexibility, multiple small rigid mesas are formed on a flexible printed circuit, where the rigid mesas are physically isolated by trenches formed around their perimeters. Individual electronic components are attached to the multiple rigid mesas. These trenches form openings at which the printed circuit board is enabled to flex, bend or twist, thereby minimizing, if not eliminating, resulting stress applied to the interconnection between the electronic components and the rigid mesas.
Claims19
A circuit board comprising:
- a. a flexible printed circuit comprising a first exterior surface and a second exterior surface opposite the first exterior surface;
- b. a plurality of rigid sections coupled to the first exterior surface, wherein each rigid section is physically separated from each other rigid section, and each rigid section includes one or more electrical pads, further wherein each rigid section comprises a first rigid section surface and a second rigid section surface opposite the first rigid section surface, wherein an entire footprint of each first rigid section surface is coupled to the first exterior surface of the flexible printed circuit;
- and
- c. a plurality of electronic components, one electrical component coupled to a corresponding one rigid section at the second rigid section surface such that the one electrical component, the one rigid section and the flexible printed circuit form a stack.
A circuit board comprising:
- a. a flexible printed circuit comprising an exterior surface;
- b. a plurality of rigid sections coupled to the exterior surface, wherein each rigid section is physically separated from each other rigid section, and each rigid section includes an electrical pad;
- and
- c. a plurality of electronic components wherein each electronic component comprises a plurality of connection pads, one connection pad is coupled to the electrical pad of a corresponding one rigid section.
A circuit board comprising:
- a. a flexible printed circuit comprising an exterior surface having a plurality of electrical pads;
- b. a plurality of rigid sections positioned within the flexible printed circuit, wherein each rigid section is physically separated from each other rigid section;
- and
- c. a plurality of electronic components wherein each electronic component comprises a plurality of connection pads, wherein one connection pad is coupled to a corresponding electrical pad on the exterior surface of the flexible printed circuit.
Dependencies are inferred from the claim text.