Thermally stable, flexible substrates for electronic devices
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United States of America Patent
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Jul 13, 2021
Grant Date -
Feb 6, 2014
app pub date -
May 10, 2013
filing date -
May 11, 2012
priority date (Note) -
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status (Latency Note)
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Abstract
A flexible substrate with a high optical transparency (>80% from 400 to 750 nm) that is retained after exposure to 300° C., near-zero birefringence (<±0.001), and a relatively low CTE (<60 ppm/° C.) is disclosed. The substrate may be manufactured as single layer, polyimide films and as a multi-layer laminate comprising a polyimide layer and a thin glass layer. The polyimides may include alicyclic dianhydrides and aromatic, cardo diamines. The films formed of the polyimides can serve as flexible substrates for optical displays and other applications that require their unique combination of properties.
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International Classification(s)
- C03C:CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREO....
- C08G:MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN B....
- C09D:COATING COMPOSITIONS, e.g. PAINTS, VARNISHES, LACQ....
- G06F:ELECTRIC DIGITAL DATA PROCESSING
- G02F:DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF ....
- B32B:LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA....
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