Combining different types of moisture-resistant materials

Patent metadata

Field	Value
Publication number	US-9795989-B2
Application number	US-201514864644-A
Country	US
Kind code	B2
Filing date	Sep 24, 2015
Priority date	Mar 15, 2013
Publication date	Oct 24, 2017
Grant date	Oct 24, 2017

Abstract

Protective coatings, including moisture-resistant coatings, that include two or more different types of moisture-resistant materials are disclosed, as are moisture-sensitive substrates that include such protective coatings. Moisture-sensitive substrates that include different types of moisture-resistant coatings on different elements are also disclosed.

First claim

What is claimed:

1. A film for imparting a substrate with moisture resistance, comprising:
a base portion, which provides moisture resistance, the base portion comprising poly(chloro-p-xylylene);
an outer portion, which provides protection, the portion comprising poly(α,α,α′,α′-tetrafluoro-p-xylylene); and
a transition between the base portion and the outer portion, wherein the transition comprises a gradient between a material of the base portion and a material of the outer portion.

2. The film of claim 1 , wherein the base portion is moisture-impermeable.

3. The film of claim 2 , wherein the outer portion is impermeable to ultraviolet light.

4. The film of claim 2 , wherein the outer portion is configured to prevent degradation of the base portion.

5. The film of claim 1 , wherein the outer portion is superimposed with respect to the base portion.

6. The film of claim 1 , further including regions where the base portion and the outer portion are not superimposed.

7. The film of claim 1 , wherein the gradient comprises a gradient between superimposed portions of the base portion and the outer portion.

8. The film of claim 1 , further comprising: an adhesion promoter on an opposite side of the base portion from the outer portion.

Assignees

• Hzo Inc

Inventors

• Stevens Blake
• Yun Yang
• Clancy Sean O

Classifications

• H05K2203/1322

  Encapsulation comprising more than one layer · CPC title

• B05D1/60 Primary

  Deposition of organic layers from vapour phase (vapour phase deposition in general C23C14/00, C23C16/00) · CPC title

• Y10T428/24802

  Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.] · CPC title

• H05K3/284 Primary

  for encapsulating mounted components (H05K1/185 takes precedence) · CPC title

• Y10T428/31504

  Composite [nonstructural laminate] · CPC title