PATENT CLAIM ANALYSIS

Application Number: 15769017
Application Type: Utility
Filing Date: 2018-04
Publication Date: 2018-10
Patent Classification: ["438", "706000"]

Abstract:
Described herein are structures and methods for preparing photobuckets for lithography, e.g. photolithography or electron-beam lithography. One method includes arranging photobuckets on a material to be etched using lithography and providing a layer of a first material at least on inner side walls of the photobuckets, followed by filling the photobuckets with a second material. The second material is more lithosensitive than the first material and the first material could be not lithosensitive at all. Layering each photobucket from the inner side wall(s) of the photobucket towards the center of the photobucket with materials that are increasingly more lithosensitive results in an improved control of lithographic patterning by reducing or eliminating edge placement errors of accidentally exposing photobuckets that should not have been exposed.

Claim (Index 14):
A method for forming interconnects, the method comprising:\n providing a non-lithosensitive structure over a dielectric layer, the structure comprising a top surface and a bottom surface, the bottom surface being closest to the dielectric layer, and further comprising a plurality of openings extending from the top surface to the bottom surface; providing a layer of a first material at least on side walls of the plurality of openings; filling the plurality of openings layered with the first material with a second material, wherein:\n the first material is not lithosensitive while the second material is lithosensitive, or \n the first material comprises a first lithosensitive material, the second material comprises a second lithosensitive material, and the second lithosensitive material is more lithosensitive than the first lithosensitive material; \n selectively exposing the non-lithosensitive structure with the plurality of openings filled with the second material to extreme ultra-violet irradiation or a charged-particle beam; developing the exposed non-lithosensitive structure; removing at least the second material in one or more of the plurality of openings of the developed non-lithosensitive structure to form one or more interconnect location openings; etching the dielectric layer through the one or more interconnect location openings to form one or more interconnect openings; and filling the one or more interconnect openings with an electrically conductive material to form one or more interconnects.

Metadata:
- Claim Count in Document: 5.0
- Percentile: 91.0
- Lexical Diversity: 1.65432
- Patent Class: 438.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['14133385', '14965734', '14720821', '14133344', '14137588']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.8325436302900321
- 35 USC 102 Novelty (BERT): 0.4933617063913497
- Combined Prediction Score: 0.7986254379001638
- Mean Citation Score: 207.990906
- Max Citation Score: 217.7994
- Similarity Product: 163.82837277188298

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