Interconnection for organic devices
View Patent ↗A device having bond pads within a bond pad region, the bond pads comprising a conductive material that is stable when exposed to atmospheric constituents. The bond pads can be formed from conductive oxide materials such as indium tin oxide. A contact layer is provided to enhance the conductivity between the bond pads and the active component of the device.
1. A device comprising:
a substrate having an active region defined thereon, the active region comprising at least one active component;
a cap bonding region surrounding the active region;
a bond pad region adjacent to the active region, wherein the bond pad region comprises bond pads which are electrically coupled to the active component through an electrical connection formed of a conductive film;
a contact conductor that is electrically coupled to at least one of the bond pads and to the active component, wherein the contact conductor does not directly contact the bond pads, and the contact conductor enhances conductance between said at least one of the bond pads and the active component beyond the conductance along the electrical connection;
a cap bonded so the substrate in the cap bonding region with the contact conductor being disposed between thc cap and the cap bonding region, the cap encapsulating the active region, wherein a portion of the contact conductor extends outside the cap; and
an insulating protective layer in direct contact with at least a portion of the contact conductor that extends outside the cap, wherein the insulating protective layer has no direct contact with the bonding pads;
wherein the active component comprises at least one OLED cell; and
wherein the active component, the bonding pads and that contact conductor are formed on the conductive film.
2. The device of claim 1 wherein the bond pads comprise a stable conductive oxide material.
3. The device of claim 2 wherein the contact conductor comprises a conductive metal.
4. The device of claim 1 wherein the bond pads comprise a conductive oxide material.
5. The device of claim 4 wherein the contact conductor comprises a conductive metal.
6. The device of claim 1 wherein the contact conductor comprises a conductive metal.
7. The device of claim 1 wherein the protective layer protects the portion of the contact conductor that extends outside the cap bonding region from damage or corrosion due to exposure to atmospheric constituents.
8. The device of claim 7 wherein the protective layer comprises photoresist, novolak resin, polyimide or polybenzoxazole.
9. The device of claim 1 , wherein the insulating protective layer encapsulates the portions of the contact conductor that extend outside the cap.
10. The device of claim 1 , wherein the conductive film is transparent.
11. A device comprising:
a substrate having an active region defined thereon, the active region comprising at least one active component;
a cap bonding region surrounding the active region;
a bond pad region adjacent to the cap bonding region, wherein the bond pad region comprises bond pads electrically coupled to the active component through an electrical connection formed of a conductive film;
a contact conductor that is electrically coupled to the bond pads and the active component, wherein the contact conductor does not directly contact the bond pads, and the contact conductor enhances conductance between the bond pads and the active component beyond the conductance along the electrical connection;
a cap bonded to the substrate in the cap bonding region to encapsulate the active region with the contact conductor being disposed between the cap and the cap bonding region, wherein a portion of the contact conductor extends outside the cap bonding region; and
a protection layer directly contacting at least a portion of the contact conductor extending outside the cap bonding region, the contact conductor spaced a distance less than about 0.25 mm from the bond pads, wherein the protective layer has no direct contact with the bonding pads;
wherein the active component comprises at least one OLED cell; and
wherein the active component, the bonding pads and the contact conductor are formed on tho conductive film.
12. The device of claim 11 wherein the bond pads comprise a conductive oxide material.
13. The device of claim 11 wherein the bond pads comprise a stable conductive oxide material.
14. The device of claim 11 wherein the protection layer protects the portion of the contact conductor that extends outside the cap bonding region from damage or corrosion due to exposure to atmospheric constituents.
15. The device of claim 14 wherein the protection layer comprises an insulating material.
16. The device of claim 15 wherein the protection layer comprises photoresist, novolak resin, polyimide or polybenzoxazole.
17. The device of claim 14 wherein the protection layer comprises photoresist, novolak resin, polyimide or polybenzoxazole.
18. The device of claim 11 wherein the protection layer encapsulates the portions of the contact conductor extending outside the cap bonding region.
19. The device of claim 11 wherein the contact conductor does not extend ever the bond pad region.
20. The device of claim 11 wherein the conductive film is transparent.