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 18):
The fabrication process according to  claim 17 , wherein forming the first barrier region further comprises:\n forming, on top of the frontal surface and inside of the hole, a first barrier layer and a second barrier layer; forming, on top of the second 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 that 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 that protrude laterally with respect to the hole over the frontal surface; and through the mask, removing the exposed portion of the dielectric sacrificial layer to expose the part of the seed layer; and wherein forming the via region and 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 which extends into the hole and a redistribution layer that overlies the conductive via and the portions of the seed layer that protrude laterally with respect to the hole; and 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; and 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 lower portion of the redistribution layer and exposing underlying portions of the seed layer; and subsequently \n selectively removing the exposed portions of the seed layer to expose underlying portions of the second barrier layer; and subsequently \n carrying out a first etch for removing the exposed portions of the second barrier layer, exposing underlying portions of the first barrier layer, and then carrying out a second 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 first etch, the 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 the peripheral portions of the seed layer; and \n forming, by means of selective growth starting from the first coating layer, the second coating layer covering laterally the lower portion of the redistribution layer and remaining portions of the seed 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): 0.9045940317716262
- 35 USC 102 Novelty (BERT): 0.4991886639510499
- Combined Prediction Score: 0.8640534949895686
- Mean Citation Score: 179.26025599999997
- Max Citation Score: 199.6956
- Similarity Product: 136.48737031166556

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