PATENT CLAIM ANALYSIS

Application Number: 15880374
Application Type: Utility
Filing Date: 2018-01
Publication Date: 2018-08
Patent Classification: ["250", "39600R"]

Abstract:
In a charged-particle multi-beam writing method a desired pattern is written on a target using a beam of energetic electrically charged particles, by imaging apertures of a pattern definition device onto the target, as a pattern image which is moved over the target. Thus, exposure stripes are formed which cover the region to be exposed in sequential exposures, and the exposure stripes are mutually overlapping, such that each area of said region is exposed by at least two different areas of the pattern image at different transversal offsets (Y 1 ). For each pixel, a corrected dose amount is calculated by dividing the value of the nominal dose amount by a correction factor (q), wherein the same correction factor (q) is used with pixels located at positions which differ only by said transversal offsets (Y 1 ) of overlapping stripes.

Claim (Index 1):
A method for writing a desired pattern on a target, comprising:\n providing a pattern definition device having a plurality of apertures transparent to a source of radiation, directing an illuminating wide beam through the apertures of the pattern definition device to form a patterned beam consisting of a corresponding plurality of beamlets, illuminating a target with the patterned beam during a sequence of exposure intervals to form a pattern image on the target, wherein the pattern image is configured to form a plurality of pattern pixels on the target wherein the plurality of pattern pixels correspond to at least a portion of the plurality of apertures, and wherein during the sequence of exposure intervals, at least a portion of the plurality of apertures are selectively controlled such that the plurality of pattern pixels are exposed to a respective dose amount, generating a relative movement between the target and the pattern definition device to produce a stepwise movement of the pattern image on the target along a path over an exposure region, said path comprising a plurality sections which extend along a scanning direction, wherein the plurality of sections correspond to a plurality of exposure stripes that collectively cover the entirety of said exposure region over sequential exposures, wherein the exposure stripes are mutually overlapping and offset from each other in a direction transverse to the scanning direction, such that exposure region is exposed by at least two different exposure stripes at different transversal offsets, and calculating, for each pixel, a corrected dose amount by dividing the value of the nominal dose amount by a correction factor, wherein the same correction factor is used with pixels written by beamlets located at positions which differ only by said transversal offsets of overlapping stripes.

Metadata:
- Claim Count in Document: 18.0
- Percentile: 86.0
- Lexical Diversity: 1.81395
- Patent Class: 250.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['14795547', '14795535', '14726243', '14631690', '15073200']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7662497457980397
- 35 USC 102 Novelty (BERT): 0.5385242076041183
- Combined Prediction Score: 0.7434771919786476
- Mean Citation Score: 375.153118
- Max Citation Score: 393.4646
- Similarity Product: 378.2287783443333

Labels:
- Claim Label 101: 1
- Claim Label 102: 1
- Claim Label 103: 1
- Claim Label 112: 1
- Combined Label: 1
- Label 101 Adjusted: 1

Dataset: test