Cost competitiveness is a major driving force in the semiconductor industry. The processing cost of an individual die is directly proportional to its size. Advances in processing technology have shrunk the device sizes in wire-bonded chips, resulting in a smaller die core size. However, the space below wire-bond pads remains relatively underutilized because of the reliability concern that electrical loads transmitted during bonding can cause failures in the underlying devices. Recently, studies have attempted to improve the use of space below wire-bond pads. Hence, the circuits under pads (CUP) structure modified layout rules to include circuits structure under pads, was developed, and extensive qualification work is required to meet reliability standards. The main purpose of this paper is to investigate the damage caused by the wirebonding process of CUP devices on the in-line assembly packaging manufacture. The root cause of wirebonding failures analyzed were based on the CUP structure and several wire bond parameters; such as bonding force, ultrasonic current, bonding time period, capillary type, machine, and wafer source, which were also confirmed with the DOE/JMP engineer technique. Finally, results were also used to implement the corrective action and the assembly yield of CUP Device has been improved, successfully.

Master of Science / Industrial & Manufacturing Systems Engineering / Shing I. Chang / The process capability is a measurable property of a process related to the specification of a product. Traditionally, process capability analysis (PCA) measurements are expressed by a process capability ratio (PCR). When using a typical PCR to measure process capability, there are certain assumptions, and critics have been made towards PCR, that some the assumptions are violated. Much research has been conducted to ratify the situations when some of the assumptions are violated. This thesis, is going to demonstrate a research towards process capability using Sample Entropy method. The desirable outcome would be that this method can avoid violating the assumptions.

The springboard perspective argues that emerging market multinational enterprises (EMNEs) can overcome their latecomer disadvantages via aggressive and risk-taking capability-upgrading measures in developed economies. However, extant research is mainly designed to study cross-sectional data sets rather than longitudinal process research. Therefore, the former contributes little to explaining the evolution of EMNEs’ springboard strategy in a consideration of firm-specific capability-upgrading. Building on these main tenets and echoing scholars’ appeal for further research into EMNE’s capability-upgrading and qualitative process perspective, this thesis opens the way for two new avenues of research in the springboard literature: the initial springboard assumption, the springboard advantages of specific host locations – most notably small and open developed economies, and the relationship between different ownership structures and springboard strategy. By default of process research these avenues have been poorly explored. In order to address these avenues and further uncover the evolutionary motivations and processes of springboard behavior, this study uses Chinese multinational enterprise (CMNE) cases to investigate how they achieve firm-specific capability-upgrading through a process perspective.While CMNE strategies in large European markets such as Germany, the UK, and France have received considerable attention, there is a lack of in-depth research on the locational advantages of most notably small and open economies such as Belgium, the Netherlands or Luxemburg. Given the demand for the extension of the aforementioned springboard perspective and the specificity of the research object and setting, I follow a grounded approach as part of inductive research. Grounded theorizing is especially plausible in research contexts calling for theoretical elucidation grounded in the practitioners’ own experiences. This theory can provide a more complete and convincing argument through creative interpretation and systematic rigor. In this study, our major sources of data are collected by interviews. On the basis of a grounded analysis, five aggregate dimensions emerged which relate to the process of CMNE’ capability-upgrading through overseas investment: (I) Capability-upgrading intent, (II) Initial learning challenge, (III) Learning mechanism, (IV) Subsidiary bound evolution, (V) Capability evolution. Furthermore, we developed a three-phase model of springboard capability-upgrading starting from i) headquarter managers’ initial intent, ii) Subsidiary learning challenge, and iii) consequent renegotiation with headquarter managers with regard to the subsidiary’s capability-upgrading role. This result shows that the subsidiary mandates of CMNEs have evolved along with different stages of internationalization.This study makes two main contributions to the springboard literature. First, it challenges assumptions of the springboard perspective through a process perspective. Second, this study contributes to qualitative process research and proposes a grounded model of CMNE evolutionary springboard process based on a three-stage typology. It suggests that CMNEs’ learning through subsidiaries in small and open economies has extended the scope of the springboard perspective through insights into the evolutionary process. / Doctorat en Sciences économiques et de gestion / info:eu-repo/semantics/nonPublished

This graduation thesis is concerned with implementing the SPC (Statistical process control) to the process plan. The aim of this thesis is an analysis of present status of manufacture laths bending and a selection of useful methods, which is possible to apply in a company processes. The main reason for SPC implementation is continual improvement of quality in manufacturing concern. The theoretical part of thesis consist of bending description, control of process quality, quality control instruments and errors in measurement. In practical part is described an actual status of manufacture and a solution of query.

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Orientador: Mario Jino / Tese (doutorado) - Universidade Estadual de Campinas, Faculdade de Engenharia Eletrica e de Computação / Made available in DSpace on 2018-08-06T08:05:26Z (GMT). No. of bitstreams: 1 Salviano_ClenioFigueiredo_D.pdf: 2111618 bytes, checksum: 1da963de455fd0587fbfd55071cd1d0f (MD5) Previous issue date: 2006 / Resumo: Melhoria de processo de software baseada nos níveis de maturidade fixos da arquitetura estagiada dos modelos SW-CMM e CMMI não atendem à diversidade de contextos e objetivos estratégicos das organizações intensivas em software. Esta pesquisa evoluí a área de melhoria de processo com a utilização da flexibilidade da arquitetura contínua da ISO/IEC 15504 para um melhor alinhamento da melhoria com o contexto e objetivos estratégicos específicos de cada organização, principalmente as micro e pequenas. São identificadas três gerações de arquiteturas de modelos de capacidade de processo (estagiada fixa, contínua fechada e contínua aberta). É proposta uma engenharia de processo, de software e de qualquer outro trabalho humano intensivo em conhecimento, dirigida por perfis de capacidade de processo. É desenvolvida uma abordagem exemplo dessa engenharia com um conjunto de propriedades, um modelo unificado, um ciclo de melhoria e um conjunto de medições, bem como um método para o estabelecimento de perfis de capacidade de processo. As propostas são validadas com análises, aplicações práticas e uma agenda de pesquisa / Abstract: Software process improvement based on the staged architecture¿s fixed maturity levels of SWCMM and CMMI models do not support the diversity of software intensive organizations context and strategic objectives. This research evolves the current process improvement area taking advantage of the flexibility of ISO/IEC 15504 continuous architecture towards a better alignment between an improvement with each organization¿s specific context and strategic objectives, especially of micro and small ones. Three generations of architectures for process capability models (fixed staged, closed continuous, open continuous) are identified. A process capability profile driven, software and any other knowledge intensive human work, process engineering is proposed. An exemplar approach for this engineering is developed, with a set of properties, a unified model, an improvement cycle and a measurement set, as well as a method for establishing process capability profile. These proposals are validated by analyses, practical applications and a research agenda / Doutorado / Engenharia de Computação / Doutor em Engenharia Elétrica

Process planning is a task comprising a broad range of activities to design and develop an appropriate manufacturing process for producing a part. Interpretation of the part design, selection of manufacturing processes, definition of operations, operation sequences, machining datums, geometrical dimensions and tolerances are some common activities associated with the task. Process planning is also “the link between product design and manufacturing” with the supplementary commission to support design of competitive products. Process planning is of a complex and dynamic nature, often managed by a skilled person with few, or no, explicit methods to solve the task. The work is heuristic and the result is depending on personal experiences and decisions. Since decades, there have been plenty of attempts to develop systems for computer-aided process planning (CAPP). CAPP is still awaiting its breakthrough and one reason is the gap between the functionality of the CAPP systems and the industrial process planning practice. This thesis has an all-embracing aim of finding methods that cover essential activities for process planning, including abilities to predict the outcome of a proposed manufacturing process. This is realised by gathering supporting methods suitable to manage both qualitative and quantitative characterisation and analyses of a manufacturing process. The production research community has requested systematisation and deeper understanding of industrial process planning. This thesis contributes with a flow chart describing the process planning process (PPP), in consequence of the methodological studies. The flow chart includes process planning activities and information flows between these activities. The research has been performed in an industrial environment for high volume manufacturing of gear parts. Though gear manufacturing has many distinctive features, the methods and results presented in this thesis are generally applicable to precision manufacturing of many kinds of mechanical parts. / <p>QC 20140522</p>

Assessments are fundamental to the process improvement program of any organization in the software industry. Assessments provide a view of the state, capability, and maturity of processes in an organization relative to a reference model. Formal assessments are the most recognized, and are comprehensive in nature. Although the depth of their evaluation often results in significant process improvement opportunities, formal assessments are too costly for frequent use by many organizations. The interim between assessments typically leaves these organizations without the currency of process state information necessary to effectively drive continuous process improvement. Mini-assessments have emerged as a solution. This paper presents a mini-assessment approach that offers a substantial cost reduction compared to formal assessments and satisfies the process state currency requirement. A specification of the approach is given, followed by discussions on the process improvement possible with its use, comparisons to other assessment methods, and an example implementation.

This thesis aims at securing the quality of components from AP&amp;T’s suppliers and to get a picture of different suppliers’ processes. In this thesis, samples supplied by various AP&amp;T suppliers where measured at AP&amp;T to gather data on how well the parts met design specifications. The collected data were analyzed using histogram and stratification. Further analysis was done using pareto chart and capability indices. Only the critical dimensions identified from the pareto chart together with discussions with experts on the shop floor were further analyzed using capability indices. This was done to focus more on the critical dimensions which needed more attention. The findings were critically studied and suggestions were made which served as a fundamental base for supplier product quality improvement plan at AP&amp;T. However, there was no direct contact with the supplier process to ascertain its being in control; therefore, product characterization was carried out. In this case, all the results obtained from the analyses only gave a momentary picture of the process. Therefore, the results can not be used for future predictions.In the analysis, special attention was laid on the shape, spread and centering of the histogram. Studies were also done on the significant few; got from the pareto chart. Use was made of capability indices to get the momentary fall-outs of ppm and the percentage of the specification band used up by the process. / Uppsatsnivå: D