PATENT CLAIM ANALYSIS

Application Number: 15898813
Application Type: Utility
Filing Date: 2018-02
Publication Date: 2019-04
Patent Classification: ["355", "077000"]

Abstract:
Embodiments described herein provide a method for cleaning contamination from sensors in a lithography tool without requiring recalibrating the lithography tool. More particularly, embodiments described herein teach cleaning the sensors using hydrogen radicals for a short period while the performance drifting is still above the drift tolerance. After a cleaning process described herein, the lithography tool can resume production without recalibration.

Claim (Index 19):
A lithography tool, comprising:\n a housing defining an inner volume; a substrate stage configured to secure and move a substrate in the inner volume; a sensor mounted on the substrate stage, wherein the sensor includes an outer surface configured to receive radiation; a radical generator configured to deliver radicals to the inner volume; and a controller communicatively coupled to the sensor and the radical generator, the controller being configured to:\n monitor a sensor measurement from the sensor indicative of an amount of contamination formed on the outer surface of the sensor; and \n cause the radical generator to perform a cleaning session when the sensor measurement reaches a threshold value, the cleaning session comprising providing radicals from the radical generator to the outer surface of the sensor, the sensor being operable to provide the sensor measurement after the cleaning without recalibration.

Metadata:
- Claim Count in Document: 7.0
- Percentile: 88.0
- Lexical Diversity: 1.53488
- Patent Class: 355.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['12398403', '11384824', '12289884', '13365758', '12937498']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.6660238704226136
- 35 USC 102 Novelty (BERT): 0.4558422780192649
- Combined Prediction Score: 0.6450057111822788
- Mean Citation Score: 134.671346
- Max Citation Score: 145.21602
- Similarity Product: 105.02719674645422

Labels:
- Claim Label 101: 1
- Claim Label 102: 1
- Claim Label 103: 0
- Claim Label 112: 0
- Combined Label: 1
- Label 101 Adjusted: 1

Dataset: test