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 1):
A method for improved overlay between two or more chambers, comprising:\n heating a first substrate within a first chamber of the two or more chambers and a second substrate within a second chamber of the two or more chambers using thermal energy; measuring a local stress pattern of the first substrate in the first chamber and the local stress pattern of the second substrate in the second chamber; adjusting the thermal energy provided to the first chamber and the second chamber; determining a sensitivity value in response to adjusting the thermal energy provided in the first chamber and the second chamber; and applying a correction factor to the thermal energy provided in the first chamber and the second chamber to adjust the local stress pattern between the first substrate in the first chamber and the second substrate in the second chamber such that the local stress pattern of subsequent substrates processed in the first chamber matches the local stress pattern of 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): 0.843152364389945
- 35 USC 102 Novelty (BERT): 0.4932260427673632
- Combined Prediction Score: 0.8081597322276868
- Mean Citation Score: 165.01060800000005
- Max Citation Score: 277.625
- Similarity Product: 255.4523363336921

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