Title:
COMPOSITE SHEET MATERIAL SELECTION METHOD FOR USE IN ULTRA-FAST LASER PATTERNING
Document Type and Number:
WIPO Patent Application WO2005111728
Kind Code:
A3
Abstract:
The present invention is a method of selecting composite sheet materials for use in ultra-fast laser patterning of layers of organic thin film material such as OLEDs. The material is selected to accomplish patterning of upper layers without damaging underlying layers by using an ultra-fast laser programmed with the appropriate laser processing parameters. These parameters are derived by examining each layer's absorption spectra, thermal, and chemical characteristics. The method of the present invention includes measuring each layer's absorption spectrum, examining each layer's thermal and chemical characteristics, determining if the layer is ablatable, determining the laser setup, patterning the layer through laser ablation processing, and determining if more layers need to be ablated. Further, the method includes a sub-method of selecting an alternate material if a layer's material characteristics are not favorable for ablation without damaging underlying layers.
Inventors:
CHENG CHEN-HSIUNG (US)
LIU XINBING (US)
LIU XINBING (US)
Application Number:
PCT/US2005/016224
Publication Date:
May 18, 2006
Filing Date:
May 10, 2005
Export Citation:
Assignee:
MATSUSHITA ELECTRIC IND CO LTD (JP)
CHENG CHEN-HSIUNG (US)
LIU XINBING (US)
CHENG CHEN-HSIUNG (US)
LIU XINBING (US)
International Classes:
B23K26/03; B23K26/40; B32B38/10; G03G5/02; (IPC1-7): H01J1/62; H01J1/68; B23K26/36; B23K26/40
Foreign References:
| US6146715A | 2000-11-14 | |||
| US4756765A | 1988-07-12 | |||
| US20030143326A1 | 2003-07-31 | |||
| US5688551A | 1997-11-18 | |||
| US4208437A | 1980-06-17 | |||
| US20040161695A1 | 2004-08-19 | |||
| US4684437A | 1987-08-04 | |||
| US6522066B2 | 2003-02-18 |
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