PATENT CLAIM ANALYSIS

Application Number: 16044190
Application Type: Utility
Filing Date: 2018-07
Publication Date: 2019-01
Patent Classification: ["257", "774000"]

Abstract:
An integrated device includes a semiconductor body and a dielectric layer bounded by a surface. A conductive region of a first metal material forms a via region extending into a hole passing through the dielectric layer, and an overlaid redistribution region which extends over the surface. At least one barrier region of a second metal material extends into the hole and surrounds the via region, and the barrier region furthermore extending over the surface. A first coating layer of a third metal material covers the top and the sides of an upper portion of the redistribution region at a distance from the surface. A second coating layer of a fourth metal material extends at a distance from the surface and covers the first coating layer, and covers laterally a lower portion of the redistribution region which is disposed on top of portions of the barrier region extending over the surface.

Claim (Index 20):
The fabrication process according to  claim 19 , wherein forming the first barrier region comprises:\n forming, on top of the frontal surface and inside of the hole, a first barrier layer, a second barrier layer and a third barrier layer; forming, on top of the third barrier layer, a seed layer; forming, on top of the seed layer, a dielectric sacrificial layer; forming, on top of the dielectric sacrificial layer, a mask defining a window exposing a portion of the dielectric sacrificial layer which overlies a part of the seed layer, the part of the seed layer including the portion of seed layer disposed inside of the hole and portions of the seed layer which protrude laterally with respect to the hole over the frontal surface; through the mask, removing the exposed portion of the dielectric sacrificial layer to expose the part of the seed layer; wherein forming the via region and the redistribution region includes forming, through the mask and by means of electrochemical growth starting from the exposed part of the seed layer, a conductive via extending into the hole and a redistribution layer which overlies the conductive via and said portions of the seed layer protruding laterally with respect to the hole; wherein the fabrication process further includes removing the mask; wherein forming the first coating layer includes forming the first coating layer covering the top and the sides of an upper portion of the redistribution layer until the first coating layer makes contact with residual portions of the dielectric sacrificial layer adjacent to the redistribution layer; wherein the fabrication process further includes, after the formation of the redistribution layer, the operations of:\n partially removing the residual portions of the dielectric sacrificial layer to form a residual dielectric region interposed between the first coating layer and the seed layer and making lateral contact with the redistribution layer, and exposing portions of the seed layer; and subsequently \n selectively removing the exposed portions of the seed layer to expose underlying portions of the third barrier layer; and subsequently \n carrying out a first etch for removing the exposed portions of the third barrier layer to expose underlying portions of the second barrier layer, and then carrying out a second etch for removing the exposed portions of the second barrier layer to expose underlying portions of the first barrier layer, and then carrying out a third etch for removing the exposed portions of the first barrier layer and portions of the first barrier layer disposed on top of the frontal surface and underneath the portions of the second barrier layer that remain after the second etch, an etch rate of the second barrier layer being lower than an etch rate of the first barrier layer; and subsequently \n selectively removing the residual dielectric region to expose sides of the lower portion of the redistribution layer and to expose a top of peripheral portions of the seed layer; and subsequently \n selectively removing said peripheral portions of the seed layer; and subsequently \n forming, by means of selective growth of the fourth material starting from the first coating layer, the second coating layer covering laterally the lower portion of the redistribution layer, remaining portions of the seed layer and of the third barrier layer.

Metadata:
- Claim Count in Document: 9.0
- Percentile: 95.0
- Lexical Diversity: 2.63333
- Patent Class: 257.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['12845065', '11203883', '11608500', '15296286', '13830279']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.9040454611471894
- 35 USC 102 Novelty (BERT): 0.5054999466996211
- Combined Prediction Score: 0.8641909097024326
- Mean Citation Score: 179.26025599999997
- Max Citation Score: 199.6956
- Similarity Product: 127.0671608435154

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