Planarization coating for polyimide substrates used in roll-to-roll fabrication of active matrix backplanes for flexible displays

Almanza-Workman, A. Marcia; Jeans, Albert; Braymen, S.; Elder, Richard; Garcia, Robert; Vornbrock, Alejandro de la Fuente; Hauschildt, Jason; Holland, E.R.; Jackson, Warren B.; Jam, Mehrban; Jeffrey, F. R.; Junge, Kelly; Kim, Hanjun; Kwon, O–Kyun; Larson, Don; Luo, Hao; Maltabes, John G.; Mei, Ping; Perlov, Craig; Smith, Mark D.; Stieler, Dan; Taussig, Carl; Trovinger, Steve; Zhao, Lihua

doi:10.1117/12.916748

Cited by 3 publications

(2 citation statements)

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“…This material has a good transparency and relatively low cost but it has a high density of "pits" from fillers and belt marks and other defects from dust and surface scratching. These features are believed to be a source of shunt defects in the dielectric [11]. Hence, the surface quality needs to be improved to reduce possible defects to an acceptable level.…”

Section: Barrier Film Fabrication Processmentioning

confidence: 99%

Further development of surface metrology methods for predicting the functional performance of flexible photovoltaic barrier films

Elrawemi

Blunt

Fleming

et al. 2013

Surf. Topogr.: Metrol. Prop.

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Abstract. Surface topography analysis plays a very significant role in determining the functional performance for many engineering surfaces. In this paper, feature characterisation techniques, based on the 'Wolf pruning' method are implemented to characterise micro and nano-scale features which have a dominant effect on the functional lifespan of flexible Photovoltaic (PV) modules. The densities and dimensions of the potential significant features are calculated by means of the feature "characterisation toolbox". The outcome of this study has shown the potential of areal feature segmentation for detecting functionally significant defects present in Atomic Layer Deposition (ALD) barrier coatings of Al 2 O 3 on polymer films. The analysis provides the basis for the development in process metrology for Roll-to-Roll (R2R) production of barrier coatings as applied to flexible PV arrays and is a first step in the demonstration of in-process use of feature parameters.

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Section: Barrier Film Fabrication Processmentioning

confidence: 99%

Further development of surface metrology methods for predicting the functional performance of flexible photovoltaic barrier films

Elrawemi

Blunt

Fleming

et al. 2013

Surf. Topogr.: Metrol. Prop.

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“…This could result in dramatically lower fabrication costs since rollto-roll processing is steady-state and avoids many of the handling complications that are associated with traditional batch processing, and thus enables a higher throughput. 3) This semi-finished material of copper-polyimide reduces the amount of residual NMP solvent produced during the heat treatment process. The construction of this material incorporates copper and polyimide film without any resin.…”

Section: Introductionmentioning

confidence: 99%

Thermal Effects on Lifetime Evaluation of Adhesiveless Copper–Polyimide

Huang

Duh

2015

Mater. Trans.

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Adhesiveless materials are commonly used for electric or portable products that require high flexibility during operation. This structure incorporates a copper substrate and polyimide film. For life-time studies, the key aspect to evaluate is the effect of the thermal factors. In general, techniques to measure the life-time of the materials involve storing samples over a long term period in order to monitor changes; however, this is time-consuming. The aging test is an alternative method to predict and evaluate the changes in the mechanic properties over a short term period; yet the test conditions influence the accuracy of the results. The temperature and relative humidity (RH) are the major parameters for the test, and the test conditions of 85°C/85% RH and 150°C will be discussed in this paper. It is observed that the lifetime of rolled-annealed copper foil with polyimide film is significantly higher than metal films produced by other common methods, and the results are explained using the analysis of the fracture mechanics. From comparing the test data with samples stored for three years, the best prediction was achieved with conditions of 85°C/85% RH; with errors of less than 5%. The best flexibility was achieved when the optimum thickness of the copper and polyimide was determined.

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Recent Progress in Materials and Devices toward Printable and Flexible Sensors

et al. 2016

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Printable electronics present a new era of wearable electronic technologies. Detailed technologies consisting of novel ink semiconductor materials, flexible substrates, and unique processing methods can be integrated to create flexible sensors. To detect various stimuli of the human body, as well as specific environments, unique electronic devices formed by "ink-based semiconductors" onto flexible and/or stretchable substrates have become a major research trend in recent years. Materials such as inorganic, organic, and hybrid semiconductors with various structures (i.e., 1D, 2D and 3D) with printing capabilities have been considered for bio and medical applications. In this review, we report recent progress in materials and devices for future wearable sensor technologies.

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Planarization coating for polyimide substrates used in roll-to-roll fabrication of active matrix backplanes for flexible displays

Cited by 3 publications

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Further development of surface metrology methods for predicting the functional performance of flexible photovoltaic barrier films

Further development of surface metrology methods for predicting the functional performance of flexible photovoltaic barrier films

Thermal Effects on Lifetime Evaluation of Adhesiveless Copper–Polyimide

Recent Progress in Materials and Devices toward Printable and Flexible Sensors

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Planarization coating for polyimide substrates used in roll-to-roll fabrication of active matrix backplanes for flexible displays

Cited by 3 publications

References 0 publications

Further development of surface metrology methods for predicting the functional performance of flexible photovoltaic barrier films

Further development of surface metrology methods for predicting the functional performance of flexible photovoltaic barrier films

Thermal Effects on Lifetime Evaluation of Adhesiveless Copper&ndash;Polyimide

Recent Progress in Materials and Devices toward Printable and Flexible Sensors

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Thermal Effects on Lifetime Evaluation of Adhesiveless Copper–Polyimide