Nanolithography system

Details Nanolithography system Nanolithography system

2011-08-02

2011-08-02

Nguyen, Kiet T (Department: 2881)

Radiant energy

Irradiation of objects or material

Irradiation of semiconductor devices

C355S067000

Reexamination Certificate

active

07989783

ABSTRACT:
A nanolithography system comprising a novel optical printing head suitable for high throughput nanolithography. This optical head enables a super-resolution lithographic exposure tool that is otherwise compatible with the optical lithographic process infrastructure. The exposing light is transmitted through specially designed super-resolution apertures, of which the “C-aperture” is one example, that create small but bright images in the near-field transmission pattern. A printing head comprising an array of these apertures is held in close proximity to the wafer to be exposed. In one embodiment, an illumination source is divided into parallel channels that illuminate each of the apertures. Each of these channels can be individually modulated to provide the appropriate exposure for the particular location on the wafer corresponding to the current position of the aperture. A data processing system is provided to re-interpret the layout data into a modulation pattern used to drive the individual channels. In one embodiment of the invention, the exposure head remains stationary while the material to be exposed rotates beneath the head. Such an embodiment comprises a circular data fracturing system to process the layout data to determine the correct modulation pattern.

REFERENCES:
patent: 5770856 (1998-06-01), Fillard et al.

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