scholarly journals Upgrading Die Attach Epoxy Dispensing Mechanism

2021 ◽  
pp. 141-148
Author(s):  
Michael D. Capili
Keyword(s):  
Time Pressure ◽  
Detection System ◽  
Research Paper ◽  
Volume Reduction ◽  
Suitable Method ◽  
Statistical Validation ◽  
Die Attach ◽  
Sigma Function ◽  
Residual Material ◽  
Epoxy Dispensing

This research paper addressed how to improve the Die Attach Pneumatic Time-Pressure Dispensing Valve. Different assessment and statistical validation comparing the efficiency of the Pneumatic Time-Pressure Dispensing Valve and Dispensing Volume Reduction. The Musashi Super Ʃ CMIII Dispenser with Sigma function controller provides more choices for regulating the volume of dispensing, since the residual material in the syringe decreases, and can be a more suitable method for dispensing glue. The consistency of the glue volume will be more consistent after the implementation of this update. This controller has the option to compensate for pressure and vacuum as the remaining fluid in the syringe decreases. The Musashi dispenser controller is equipped with an empty syringe detection system. As the remaining adhesive, this will avoid variations in dispensed volume.

Managing Epoxy Tailing in Die Attach thru Design of Experiment

2020 ◽  
pp. 44-50
Author(s):  
Michael D. Capili
Keyword(s):  
Production Process ◽  
Design Of Experiment ◽  
Conductive Adhesive ◽  
Fluid State ◽  
Die Attach ◽  
Epoxy Dispensing ◽  
Common Problems ◽  
Adhesive Epoxy

Die attach epoxy dispensing is an automated factory environment that creates some special challenges. A robust production process begins with an understanding of the adhesives in their fluid state and which important parameters must be controlled. One of the most common problems encountered with adhesives in Die attach process is epoxy tailing. Tailing in this sense means the peak of the dispensed material falls away from the center of the dot when the nozzle finishes dispensing. Dispensing requirements, techniques, and equipment resulting from this experience are discussed. Guidelines for optimizing quality is given. In this research, epoxy-associated defects are eliminated by optimizing the Break tail parameter using the Design of Experiment (DOE) methodology. The DOE prediction profile result shows that the tailing parameters recommended is Broken tail delay: 200 ms and Break tail offset is 350 counts. This study is applicable for silver filled conductive adhesive epoxy with greater than 9K Viscosity and greater than 4 Thixotropic Index.

scholarly journals Upgrading Die Attach Machine Capability for Micro Electromechanical Systems Package

2020 ◽  
pp. 10-15
Author(s):  
Michael D. Capili
Keyword(s):  
Product Structure ◽  
Statistical Validation ◽  
Machine Model ◽  
Electromechanical Systems ◽  
Die Attach ◽  
Placement Accuracy ◽  
Critical Characteristics ◽  
And Performance

The paper discussed the study and challenges of the Die Attach process, the critical characteristics of the product structure and the demand for the MEMS product. Upgrading the current machine mechanical and software to improve the machine's capabilities and overcome the criticality of the product structure, such as; 30 microns Die Placement accuracy, can process Wafer with dual Die Orientation 0 and 180 degrees, capable of detecting incorrect die orientation and finally can process thin substrate with 130 microns thickness. After machine upgrades, statistical validation using Two Proportion tests was used to help validate the machine's performance efficiently. The new upgraded machine has the same capability and performance as the new die attach machine model, therefore the upgrade and enhancement on the old model Die Attach machine are effective and efficient.

scholarly journals A Result Analysis of Mask Detection based Notification System

2021 ◽  
Vol 9 (VI) ◽  
pp. 15-17
Author(s):  
Gaurav Kumar D. K. Singh
Keyword(s):  
Neural Networks ◽  
Convolutional Neural Networks ◽  
Detection System ◽  
Face Mask ◽  
Research Paper ◽  
Public Places ◽  
Notification System ◽  
Full Face ◽  
Result Analysis

Face mask detection system will be the best option for preventing covid-19 spread at public places. Those models are mainly required for ensuring safety and hygiene in a public premises .The research paper consist of full face scan using a pre-trained model such that all the facial characters can be imprinted on the pixel basis by the pre-trained model that takes input from the camera associated with the program. The whole of the program is based on convolutional neural networks which extract features and associate them in the form of neurons

scholarly journals Trust based Intrusion Detection System Architecture for WSN

2020 ◽  
Vol 8 (6) ◽  
pp. 700-703
Keyword(s):  
New Species ◽  
Wireless Communication ◽  
Intrusion Detection ◽  
Significant Role ◽  
System Architecture ◽  
Intrusion Detection System ◽  
Detection System ◽  
Research Paper ◽  
Software Application ◽  
Security Scheme

Today there are extraordinary attacks on all kind of networks. Security for Payload is considered one of the biggest agenda for all kind of organizations. To deal with new species if attacks like threat, which are blended in nature, no security platform can take guarantee for their intrusion protection. Among all security platforms, intrusion detection system (IDS) are being used to do the inspection of all the packets or data being transferred between two nodes, A software application , that is responsible doing the monitoring of any kind of unwanted or to monitor the activity which is malicious in nature. This research acquaints about handling unknown attacks through Intrusion Detection System. For improving security in wireless communication, Intrusion Detection System (IDS) plays significant role, which includes information about network and security scheme. Hence, this research paper focused on development of appropriate system architecture for IDS system

scholarly journals Necrosis volume and Choi criteria predict the response to endoscopic ultrasonography-guided HybridTherm ablation of locally advanced pancreatic cancer

2020 ◽  
Vol 08 (10) ◽  
pp. E1511-E1519
Author(s):  
Sabrina Gloria Giulia Testoni ◽  
Gabriele Capurso ◽  
Maria Chiara Petrone ◽  
Maurizio Barbera ◽  
Walter Linzenbold ◽  
...  
Keyword(s):  
Tumor Volume ◽  
Detection System ◽  
Locally Advanced ◽  
Reduction Rate ◽  
Advanced Pancreatic Cancer ◽  
Volume Reduction ◽  
Ductal Adenocarcinoma ◽  
Choi Criteria ◽  
Radiological Response ◽  
Tumor Volume Reduction

Abstract Background and study aims Endoscopic ultrasound (EUS)-guided ablation of pancreatic ductal adenocarcinoma (PDAC) with HybridTherm-Probe (EUS-HTP) is feasible and safe, but the radiological response and ideal tool to measure it have not been investigated yet. The aims of this study were to: 1) assess the radiological response to EUS-HTP evaluating the vital tumor volume reduction rate, Response Evaluation Criteria in Solid Tumors (RECIST1.1) and Choi criteria; 2) determine the prognostic predictive yield of these criteria. Patients and methods A retrospective analysis was performed of patients with locally advanced PDAC after primary treatment or unfit for chemotherapy prospectively treated by EUS-HTP. Computed tomography scan was performed 1 month after EUS-HTP to evaluate: 1) vital tumor volume reduction rate (VTVRR) by measuring necrosis and tumor volumes through a computer-aided detection system; and 2) RECIST1.1 and Choi criteria. Results EUS-HTP was feasible in 22 of 31 patients (71 %), with no severe adverse events. Median post-HTP survival was 7 months (1 – 35). Compared to pre-HTP tumor volume, a significant 1-month VTVRR (mean 21.4 %) was observed after EUS-HTP (P = 0.005). We identified through ROC analysis a VTVRR > 11.46 % as the best cut-off to determine post-HTP 6-month survival outcome (AUC = 0.733; sensitivity = 70.0 %, specificity = 83.3 %). This cut-off was significantly associated with longer overall survival (HR = 0.372; P = 0.039). According to RECIST1.1 and Choi criteria, good responders to EUS-HTP were 60 % and 46.7 %, respectively. Good responders according to Choi, but not to RECIST1.1, had longer survival (HR = 0.407; P = 0.04). Conclusions EUS-HTP induces a significant 1-month VTVRR. This effect is assessed accurately by evaluation of necrosis and tumor volumes. Use of VTVRR and Choi criteria, but not RECIST 1.1 criteria, might identify patients who could benefit clinically from EUS-HTP.

scholarly journals Optimization of Dispensing Parameter to Eliminate the Excessive Epoxy Dispense in Die Attach

2021 ◽  
pp. 1-5
Author(s):  
Michael D. Capili
Keyword(s):  
Design Of Experiment ◽  
Research Study ◽  
Die Attach ◽  
Main Effect ◽  
Epoxy Dispensing

Excessive epoxy flow on the dispensing nozzle may result in epoxy tailings due to unoptimized dispensing parameters.  This may cause various problems related to epoxy dispensing, such as epoxy splatter, epoxy on lead, and epoxy bridging. This research study is conducted to eliminate the cause of epoxy related defects. Optimization of dispensing parameter using Design of Experiment as a methodology to reduce the excessive epoxy PPM rate. And base on the DOE main effect plot, excessive epoxy dispense PPM reduces as Snuffback time increases or faster.

scholarly journals Optimization of Dispensing Parameter to Speed up the Die Attach Throughput

2020 ◽  
pp. 39-44
Author(s):  
Michael D. Capili
Keyword(s):  
Integrated Circuits ◽  
Capital Investment ◽  
Writing Process ◽  
High Volume ◽  
Process Unit ◽  
Manufacturing Line ◽  
Die Attach ◽  
Epoxy Dispensing ◽  
Speed Up ◽  
Area Optimization

Driven by the company vision to become a high-volume manufacturing (HVM), increasing throughput in the manufacturing line is critical to meeting market demands. The ever-growing demand for integrated circuits in part requires additional capital investment to purchase new equipment such as die bonders to support the new requirement. Making the best of existing resources is often the most common approach to deal with this challenge. Defining the correct method and making the most of the secondary parameters necessary to increase the bonding speed by means of a creative analysis that made this article interesting. The objective of this project is to boost productivity by maximizing UPH to improve the epoxy writing process at Attach, which is a bottleneck area. Optimization of the dispensing sequence and the dispensing direction to improve and speed up the epoxy dispensing process unit per hour.

scholarly journals Statistical validation of physiological indicators for non-invasive and hybrid driver drowsiness detection system

2009 ◽  
Vol 5 (2) ◽  
Author(s):  
Eugene Zilberg ◽  
Zheng Ming Xu ◽  
David Burton ◽  
Murad Karrar ◽  
Saroj Lal
Keyword(s):  
Detection System ◽  
Seat Belt ◽  
Alpha Band ◽  
Statistical Validation ◽  
Physiological Indicators ◽  
Car Seat ◽  
Non Invasive ◽  
Driver Drowsiness ◽  
Band Power ◽  
Eeg Alpha

A hybrid system for detecting driver drowsiness was examined by using piezofilm movement sensors integrated into the car seat, seat belt and steering wheel. Statistical associations between increase in the driver drowsiness and the non-invasive and conventional physiological indicators were investigated. Statistically significant associations were established for the analysed physiological indicators – car seat movement magnitude and (electroencephalogram) EEG alpha band power percentage. All of the associastions were physiologically plausible with increase in probability of drowsiness associated with increases in the EEG alpha band power percentage and reduction in the seat movement magnitude. Adding a non-invasive measure such as seat movement magnitude to any combination of the EEG derived physiological predictors always resulted in improvement of associations. These findings can serve as a foundation for designing the vehicle-based fatigue countermeasure device as well as highlight potential difficulties and limitations of detection algorithm for such devices.

Sign in / Sign up

Export Citation Format

Share Document