摘要:
A stretchable electronic device is disclosed. In one aspect, the device has a stretchable interconnection electrically connecting two electronic components. The stretchable interconnection includes an electrically conductive channel having a predetermined first geometry by which the channel is stretchable up to a given elastic limit and a first flexible supporting layer provided for supporting the electrically conductive channel and having a predetermined second geometry by which the first supporting layer is stretchable. The predetermined second geometry has a predetermined deviation from the predetermined first geometry chosen for restricting stretchability of the electrically conductive channel below its elastic limit.
摘要:
A solution is described, in particular for electroless deposition of a metal on a polyimide substrate. The solution from which the metal is deposited, comprises a source of metal ions; a reducing agent; an additive to adjust the pH of said bath to a predetermined value; and an aromatic sulfonic acid. The solution is used in a method for electroless deposition of a metal onto a substrate wherein the substrate preferably comprises polyimide exposed at a surface thereof. The method of the present invention provides a metal layer which shows good adhesion towards the polyimide substrate and which is very smooth and does not need any additional smoothening treatment.
摘要:
The present invention is related to a method for electroless plating Nickel/Gold on aluminium bonding pads of single chips or wafer parts. This method result in uniformly plated singulated chips, single dice or wafer parts in a much more simple and cost-effective way. The proposed method comprises the steps of attaching to die or wafer part to a non-conductive adhesive or substrate.
摘要:
A semiconductor package is disclosed. In one aspect, the package includes a base frame and a wiring substrate mounted on the base frame. The base frame has two pieces made of a material with respectively a first and a second coefficient of thermal expansion and connected to each other via resilient connecting structures. The wiring substrate has electric wiring tracks providing the electric connection between first and second bond pads, provided for being electrically connected to bond pads on respectively a die and a printed wiring board. The electrical wiring tracks have flexible parts provided to expand and contract along with the resilient connecting structures.
摘要:
A composite substrate is disclosed. In one aspect, the substrate has a stretchable and/or flexible material. The substrate may further have patterned features embedded in the stretchable and/or flexible material. The patterned features have one or more patterned conducting layers.
摘要:
Methods of producing a composite substrate and devices made by the methods are disclosed. One of the methods comprises providing a flexible sacrificial layer, producing one or more patterned conducting layers on the flexible sacrificial layer, bending the sacrificial layer into a predetermined shape, providing a stretchable and/or flexible material on top of and in between features of the one or more patterned layers.
摘要:
Methods of producing a composite substrate and devices made by the methods are disclosed. One of the methods comprises providing a flexible sacrificial layer, producing one or more patterned conducting layers on the flexible sacrificial layer, bending the sacrificial layer into a predetermined shape, providing a stretchable and/or flexible material on top of and in between features of the one or more patterned layers.
摘要:
A method is provided for fabricating a porous elastomer, the method comprising the steps of: providing a predetermined amount of a liquid elastomer and a predetermined amount of a porogen; mixing the liquid elastomer and the porogen in vacuum until a homogenous emulsion without phase separation is formed; curing the homogenous emulsion until polymerizations of the emulsion is reached, thereby forming a cured emulsion; and removing the porogen from the cured emulsion. The method can advantageously be used for forming biocompatible porous elastomers and biocompatible porous membranes.
摘要:
A composite substrate is disclosed. In one aspect, the substrate has a stretchable and/or flexible material. The substrate may further have patterned features embedded in the stretchable and/or flexible material. The patterned features have one or more patterned conducting layers.
摘要:
A stretchable electronic device is disclosed. In one aspect, the device has a stretchable interconnection electrically connecting two electronic components. The stretchable interconnection includes an electrically conductive channel having a predetermined first geometry by which the channel is stretchable up to a given elastic limit and a first flexible supporting layer provided for supporting the electrically conductive channel and having a predetermined second geometry by which the first supporting layer is stretchable. The predetermined second geometry has a predetermined deviation from the predetermined first geometry chosen for restricting stretchability of the electrically conductive channel below its elastic limit.