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    • 20. 发明授权
    • Electronic device contact structures
    • 电子设备接触结构
    • US07598531B2
    • 2009-10-06
    • US11357743
    • 2006-02-17
    • Alexei A. ErchakElefterios LidorikisJohn W. GraffMilan Singh MinskyScott W. Duncan
    • Alexei A. ErchakElefterios LidorikisJohn W. GraffMilan Singh MinskyScott W. Duncan
    • H01L29/205
    • H01L33/38H01L51/5203
    • 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.
    • 描述了涉及接触结构的电子设备以及与之相关的组件,系统和方法。 接触结构(也称为电接触结构或电极)是电连接到电源的器件上的特征。 电源可以通过接触结构向器件提供电流。 接触结构可以设计成改善电子设备中的电流分布。 例如,可以修改触点的接触电阻以改善电流分布(例如,通过控制触点的形状和/或结构和/或组成)。 接触结构可以包括位于器件的表面和从导电焊盘延伸的导电部分之间的中间层(例如,非欧姆层)。 中间层和/或导电部分可以被设计成具有促进电流从导电焊盘朝向接触端部的流动的某些形状(例如,非线性形状),以增加电流扩散。 中间层还可以减少光吸收触点下方的光产生,从而允许更大百分比的所产生的光从装置的表面露出。 有利地,包括本发明的接触结构的装置可以增加发光的均匀性和/或以其它方式提高性能。 因此,这些接触结构特别适用于包括LED在内的各种发光装置。