Substrate carrier for electroplating solar cells

Details Substrate carrier for electroplating solar cells Substrate carrier for electroplating solar cells

2007-02-06

2007-02-06

Bell, Bruce F. (Department: 1746)

Work holders

Plural holders to hold workpieces relative to each other

C269S040000, C269S041000, C269S042000, C269S043000, C269S044000, C269S095000, C269S287000, C269S303000, C269S900000, C204S297060, C204S297070, C204S297090, C204S297100

Reexamination Certificate

active

10912348

ABSTRACT:
A carrier for use in processing of a plurality of wafers or other substrates includes a support frame on which the wafers are mounted and in one embodiment at least one auxiliary frame for holding the substrates on the support frame. A plurality of clips extend from the auxiliary frame and engage the substrates in pressure engagement, and fasteners retain the auxiliary frame in position with respect to the support frame. In one embodiment two auxiliary frames can be employed for holding wafers on opposing surfaces of the support frame. The support frame has electrically non-conducting surfaces whereby the processing does not affect the support frame, and the auxiliary frame is made of electrically non-conductive material. The clips are electrically conductive and bridge current from the support frame to the wafers during plating operations. In another embodiment, auxiliary frame are not used and the wafer retention clips are mounted on the support frame. In use, the carrier can support a high number of units for processing with no significant mechanical stress being transferred to the wafers during loading and unloading from the carrier. The carriers and wafers can be transferred easily for different chemical baths and can be handled safely during rinsing and drying steps.

REFERENCES:
patent: 3612243 (1971-10-01), Marion et al.
patent: 4752371 (1988-06-01), Kreisel et al.
patent: 4986778 (1991-01-01), Liken et al.
patent: 5580432 (1996-12-01), Shibata et al.
patent: 6553644 (2003-04-01), Karmaniolas et al.
patent: 2004/0200520 (2004-10-01), Diamond

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