PATENT CLAIM ANALYSIS

Application Number: 16009327
Application Type: Utility
Filing Date: 2018-06
Publication Date: 2018-10
Patent Classification: ["257", "004000"]

Abstract:
The present disclosure relates to a resistive random access memory (RRAM) device architecture, that includes a thin single layer of a conductive etch-stop layer between a lower metal interconnect and a bottom electrode of an RRAM cell. The conductive etch-stop layer provides simplicity in structure and the etch-selectivity of this layer provides protection to the underlying layers. The conductive etch stop layer can be etched using a dry or wet etch to land on the lower metal interconnect. In instances where the lower metal interconnect is copper, etching the conductive etch stop layer to expose the copper does not produce as much non-volatile copper etching by-products as in traditional methods. Compared to traditional methods, some embodiments of the disclosed techniques reduce the number of mask step and also reduce chemical mechanical polishing during the formation of the bottom electrode.

Claim (Index 15):
A resistive random access memory (RRAM) device, comprising:\n a semiconductor body having a source region and a drain region horizontally separated by a channel region; a gate structure disposed over the channel region; a first contact and a second contact disposed above the source region and drain region, respectively; a metal interconnect structure disposed over the first contact; a resistive random-access memory (RRAM) stack disposed above the metal interconnect, wherein the RRAM stack comprises: a conductive etch-stop layer (CESL) contacting a top surface of the metal interconnect structure; a bottom electrode structure over the CESL; a variable resistance dielectric structure over the bottom electrode structure; and a top electrode structure over the variable resistance dielectric structure; wherein outer sidewalls of the bottom electrode structure are spaced apart by a first distance, and outer sidewalls of the top electrode structure are spaced apart by a second distance which is less than the first distance.

Metadata:
- Claim Count in Document: 51.0
- Percentile: 94.0
- Lexical Diversity: 1.73256
- Patent Class: 257.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['14196361', '14196416', '15233028', '16099173', '15403399']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.9215550719149136
- 35 USC 102 Novelty (BERT): 0.523569598529168
- Combined Prediction Score: 0.8817565245763389
- Mean Citation Score: 248.950878
- Max Citation Score: 347.4014
- Similarity Product: 301.0737616688967

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

Dataset: test