PATENT CLAIM ANALYSIS

Application Number: 16015507
Application Type: Utility
Filing Date: 2018-06
Publication Date: 2019-12
Patent Classification: ["438", "014000"]

Abstract:
Various embodiments of the present application are directed towards a method for workpiece-level alignment with low alignment error and high throughput. In some embodiments, the method comprises aligning a first alignment mark on a first workpiece to a field of view (FOV) of an imaging device based on feedback from the imaging device, and further aligning a second alignment mark on a second workpiece to the first alignment mark based on feedback from the imaging device. The second workpiece is outside the FOV during the aligning of the first alignment mark. The aligning of the second alignment mark is performed without moving the first alignment mark out of the FOV. Further, the imaging device views the second alignment mark, and further views the first alignment mark through the second workpiece, during the aligning of the second alignment mark. The imaging device may, for example, perform imaging with reflected infrared radiation.

Claim (Index 10):
A process tool comprising:\n a first workpiece stage configured to support a first workpiece over the first workpiece stage, and further configured to move the first workpiece, wherein the first workpiece stage has a continuous portion devoid of openings; a second workpiece stage configured to support a second workpiece under the second workpiece stage, and further configured to move the second workpiece, wherein the second workpiece stage is elevated relative to the first workpiece stage and defines an opening extending completely through the second workpiece stage; a radiation source over the second workpiece stage and configured to emit radiation towards the first workpiece stage through the opening, and wherein the continuous portion of the first workpiece stage is configured to block the radiation from passing through the first workpiece stage; an imaging device over the second workpiece stage and configured to sense reflections of the radiation; and a controller configured to control the second workpiece stage to align a second alignment mark in the second workpiece to a first alignment mark in the first workpiece based on feedback from the imaging device, wherein the imaging device is configured to image the first alignment mark through both the second workpiece and the opening while aligning the second alignment mark to the first alignment mark and while the first alignment mark overlies the continuous portion of the first workpiece stage.

Metadata:
- Claim Count in Document: 50.0
- Percentile: 94.0
- Lexical Diversity: 2.70492
- Patent Class: 438.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['13457832', '15687908', '14244086', '15194631', '10665404']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.8266099487504562
- 35 USC 102 Novelty (BERT): 0.5037554455500031
- Combined Prediction Score: 0.7943244984304109
- Mean Citation Score: 173.59853800000005
- Max Citation Score: 203.71729
- Similarity Product: 130.27063019022464

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

Dataset: test