Patent ID: 11929267
Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H  B  F | IPC B  H

Claim 0:
1. An ultraviolet (UV) lamp assembly of a UV curing tool for curing a low dielectric constant (low-k) material layer of a semiconductor wafer, said UV lamp assembly comprising:
a UV lamp which emits UV light;
a first reflector arranged proximate to a first side of said UV lamp, said first reflector including a first surface facing said UV lamp from which UV light emitted by said UV lamp is at least partially reflected; and
a UV reflective coating partially coating said first surface of the first reflector;
wherein a plurality of areas of the first surface of the first reflector remain uncoated with the UV reflective coating, the plurality of areas uncoated are located within a first zone encompassing the first surface, and the plurality of areas uncoated are each separated by said UV reflective coating partially coating said first surface of the first reflector.