PATENT CLAIM ANALYSIS

Application Number: 15944830
Application Type: Utility
Filing Date: 2018-04
Publication Date: 2018-08
Patent Classification: ["438", "005000"]

Abstract:
The present disclosure generally relates to a method for performing semiconductor device fabrication, and more particularly, to improvements in lithographic overlay techniques. The method for improved overlay includes depositing a material on a substrate, heating a substrate in a chamber using thermal energy, measuring a local stress pattern of each substrate, wherein measuring the local stress pattern measures an amount of change in a depth of the deposited material on the substrate, plotting a plurality of points on a k map to determine a local stress pattern of the substrate, adjusting the thermal energy applied to the points on the k map, determining a sensitivity value for each of the points on the k map, and applying a correction factor to the applied thermal energy to adjust the local stress pattern.

Claim (Index 11):
A method for improved overlay in a processing system, comprising:\n heating a substrate in each chamber of the processing system using thermal energy; measuring a local stress pattern for each substrate, the measuring a local stress pattern including plotting a plurality of points on a k map; determining a thermal adjustment recipe based on the local stress pattern of each substrate; and applying a correction factor to the thermal energy provided in each chamber of the processing system to adjust the local stress pattern for subsequent substrates processed in each chamber, the correction factor for each chamber selected such that subsequent substrates processed in the first chamber having a local stress pattern that matches subsequent substrates processed in the second chamber.

Metadata:
- Claim Count in Document: 31.0
- Percentile: 91.0
- Lexical Diversity: 2.25397
- Patent Class: 438.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['15492428', '15829809', '14879043', '14874353', '10743272']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.8428792306899681
- 35 USC 102 Novelty (BERT): 0.4959356863468757
- Combined Prediction Score: 0.8081848762556588
- Mean Citation Score: 165.01060800000005
- Max Citation Score: 277.625
- Similarity Product: 245.1815019249916

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

Dataset: test