Printed electronic substrate havine photochromic barrier layer

Details Printed electronic substrate havine photochromic barrier layer Printed electronic substrate havine photochromic barrier layer

2006-12-14

2010-02-23

Dang, Trung (Department: 2892)

Active solid-state devices (e.g., transistors, solid-state diode

Responsive to non-electrical signal

Electromagnetic or particle radiation

C257SE31001

Reexamination Certificate

active

07667285

ABSTRACT:
A protective photochromic barrier film for a light-sensitive printed electronic substrate. Light-sensitive semiconductor devices on a dielectric substrate are electrically connected by conductors. A barrier layer containing photochromic dyes covers some or all of the light-sensitive semiconductor devices. Upon exposure to visible, infrared, or ultraviolet light, the photochromic dyes change chemical structure and decrease the amount of visible or non-visible light that can impinge upon the light-sensitive electronic devices. Upon removal of the visible or non-visible light, the photochromic dyes either revert to their original structure or maintain their altered state.

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