Patent ID: 8497421
Filing Date: 2013-07-30
Classification: H01L,Y02E

Abstract:
1. A lift-off structure for manufacturing a photoelectric device, comprises: a substrate; a buffer layer disposed on said substrate; an etch stop layer disposed on said buffer layer; a protective layer disposed on said etch stop layer; a sacrificial layer disposed on said protective layer; a photoelectric element disposed on said sacrificial layer; and a metal layer disposed on said photoelectric element, comprising a first etched channel, a second etched channel, and a third etched channel, wherein said first etched channel, said second etched channel, and said third etched channel are etched to expose said photoelectric element, said first etched channel and said second etched channel are intersected to define a plurality of regions on said metal layer, and said third etched channel is within one of said regions and connected to said first etched channel; wherein said first etched channel, said second etched channel, and said third etched channel facilitate a etching solution for etching said photoelectric element and for further deepening said first etched channel said second etched channel, and said third etched channel to define said photoelectric element into a plurality of chips and to expose said sacrificial layer, and to further facilitate a hydrofluoric acid solution to etch said sacrificial layer.