Manufacturing method of composite sheet material using ultrafast laser pulses
US7122489B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 12, 2004 |
| Grant date | Oct 17, 2006 |
| Priority date | — |
| Expiry date | Nov 25, 2024 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S438/94
Abstract
A patterned, multi-layered thin film structure is patterned using ultra-fast lasers and absorption spectroscopy without damaging underlying layers of the layered structure. The structure is made by selecting ablatable layers based on their thermal, strength and absorption spectra and by using an ultra-fast laser programmed with the appropriate wavelength (λ), pulse width (τ), spectral width (Δλ), spot size, bite size and fluence. The end structure may have features (such as vias, insulating areas, or inkjet printed areas) patterned in the last (top) layer applied or at deeper layers within the layered structure, and can be used as components of organic light emitting didoes (OLEDs) and organic thin film transistors (OTFTs). The method of the present invention includes determining the product's specifications, providing a substrate, selecting a layer, applying the layer, patterning the layer and determining if more layers need to be added to the multi-layered thin film structure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.