ELECTRONIC DEVICE CONTACT STRUCTURES

Electronic devices involving contact structures, and related components, systems and methods associated therewith are described. Contact structures (also referred to as electrical contact structures or electrodes) are features on a device that are electrically connected to a power source. The power...

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Bibliographische Detailangaben
Hauptverfasser: ERCHAK, ALEXEI, A, LIDORIKIS, ELEFTERIOS, GRAFF, JOHN, W, MINSKY, MILAN, SINGH, DUNCAN, SCOTT, W
Format: Patent
Sprache:eng ; fre
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Zusammenfassung:Electronic devices involving contact structures, and related components, systems and methods associated therewith are described. Contact structures (also referred to as electrical contact structures or electrodes) are features on a device that are electrically connected to a power source. The power source can provide current to the device via the contact structures. The contact structures can be designed to improve current distribution in electronic devices. For example, the contact resistance of the contacts may be modified to improve current distribution (e.g., by controlling the shape and/or structure and/or composition of the contacts). The contact structures may include an intervening layer (e.g., a non-ohmic layer) positioned between a surface of the device and a conductive portion extending from a conductive pad. The intervening layer and/or conductive portions may be designed to have certain shapes (e.g., non-linear shapes) that promote current flow from the conductive pad towards the ends of the contacts to increase current spreading. The intervening layer can also reduce light generation underneath the light absorbing contacts to allow a greater percentage of the generated light to emerge from the surface of the device. Advantageously, devices including contact structures of the invention can increase uniformity of light emission and/or otherwise improve performance. As such, these contact structures are particularly suitable for use in a variety of light-emitting devices, including LEDs. La présente invention concerne des dispositifs électroniques qui impliquent des structures de contact et des composants, systèmes et procédés connexes qui leur sont associés. Les structures de contact (aussi appelées structures de contact électriques ou électrodes) sont installées sur un dispositif et électriquement raccordées à une source d'alimentation. La source électrique peut apporter du courant au dispositif via les structures de contact. Ces structures peuvent être conçues pour améliorer la distribution de courant des dispositifs électroniques. Ainsi, par exemple, la résistance des contacts peut être modifiée pour améliorer la distribution de courant, par exemple en contrôlant la forme et/ou la structure et/ou la composition des contacts. Les structures de contact peuvent comprendre une couche intermédiaire (comme une couche non ohmique) placée entre une surface du dispositif et une partie conductrice se prolongeant à partir d'un tampon conducteur. La cou