Microcavity carrier with image enhancement for laser ablation

摘要

A carrier belt for fabricating a device or component such as an anisotropic conductive film. The carrier belt includes a substrate having a sacrificial image enhancing layer. Microcavities are formed in the carrier by laser ablation through the image enhancing layer. After the image enhancement layer is removed, a plurality of conductive particles are distributed into an array of microcavities formed by laser ablation on a surface of a carrier belt and transferred to an adhesive layer. The image enhancing layer enables one to form microcavities with a fine pitch and spacing and partitions having a high aspect ratio.

主权项

1. A carrier sheet, web or belt comprising a substrate and an image enhancement layer, each of the layers being laser ablatable, the image enhancement layer being deposited directly on the substrate or being deposited on a microcavity forming layer interposed between the IEL and the substrate, and an array of microcavities laser ablated into the IEL and the substrate or the microcavity forming layer, wherein the microcavities are spaced less than about 15 μm apart, and the microcavities are formed with partition walls having an aspect ratio greater than about 0.5.