P‐111: A Thin Film Encapsulation Stack for PLED and OLED Displays

Assche, F.J.H. van; Vangheluwe, Rik; Maes, Jochen; Mischke, W; Bijker, M.D.; Dings, F. C.; Evers, Mfj; Kessels, W.M.M.; Sanden, M.C.M. van de

doi:10.1889/1.1831072

Cited by 23 publications

(6 citation statements)

References 3 publications

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“…In addition to their use as gate and interlayer dielectrics, silicon oxides and nitrides can be considered as transient passivation/encapsulation layers. These materials are well known to be good barrier materials for permeation of water vapor in conventional electronics . Previous research on encapsulation with PECVD oxide and nitride in organic light‐emitting diode (OLED) devices indicates that defects, such as pinholes, are a primary cause of leakage of vapors or fluids.…”

Section: Encapsulation Strategy With Inorganic Layersmentioning

confidence: 99%

Dissolution Behaviors and Applications of Silicon Oxides and Nitrides in Transient Electronics

Kang

Hwang

Cheng

et al. 2014

Adv Funct Materials

222

293

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Silicon oxides and nitrides are key materials for dielectrics and encapsulation layers in a class of silicon-based high performance electronics that has ability to completely dissolve in a controlled fashion with programmable rates, when submerged in bio-fl uids and/or relevant solutions. This type of technology, referred to as "transient electronics", has potential applications in biomedical implants, environmental sensors, and other envisioned areas. The results presented here provide comprehensive studies of transient behaviors of thin fi lms of silicon oxides and nitrides in diverse aqueous solutions at different pH scales and temperatures. The kinetics of hydrolysis of these materials depends not only on pH levels/ion concentrations of solutions and temperatures, but also on the morphology and chemistry of the fi lms, as determined by the deposition methods and conditions. Encapsulation strategies with a combination of layers demonstrate enhancement of the lifetime of transient electronic devices, by reducing water/vapor permeation through the defects.

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Section: Encapsulation Strategy With Inorganic Layersmentioning

confidence: 99%

Dissolution Behaviors and Applications of Silicon Oxides and Nitrides in Transient Electronics

Kang

Hwang

Cheng

et al. 2014

Adv Funct Materials

222

293

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“…The pretty straightforward structure of the LC device had better advantages than the mainly studied devices nowadays in the deformable display area such as OLED, PLED, and PDLC . Firstly, the LC device only containing one display layer and two electrode layers was much more simply than OLED and PLED devices which were composed of three different and complex layers .…”

Section: Resultsmentioning

confidence: 99%

“…Firstly, the LC device only containing one display layer and two electrode layers was much more simply than OLED and PLED devices which were composed of three different and complex layers . Secondly, LC device could be prepared conventionally in air with water and oxygen, but it did not work for OLED and PLED because of their great sensitivity for water and oxygen, so it put forward higher demand for package technology and encapsulation materials for OLED and PLED, especially the flexible devices bending for many times. Meanwhile PDLC also had the weaknesses of complicated preparation technology, poor controllability, using organic solvents, narrow selection for solvents and polymers, and lots of unstable affecting factors in the process of polymerization .…”

Section: Resultsmentioning

confidence: 99%

Electroresponsive Stretchable Liquid‐Crystal Device with Deformable Gel Network

Tong

Shan

et al. 2019

Adv Elect Materials

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meet the requirement of bend or fold in most situations. But some devices like biomimetic epidermal electronics or implantable electronic devices need to adapt the large complex deformation of skins or biological tissues, which cause the idea that stretch ability is regarded as a key factor of designing devices. [10] And in the area of liquid display, traditional liquid crystal (LC) materials have been used in our life for so long time, but they could not be universally used in the deformable devices owing to their natural properties of flow and orderliness, and they are far more likely to flow to everywhere with no fixed shape and show cluttered arrangement mode influenced by external force, much less the application in stretchable devices.To overcome this weakness of LC mole cules, gelators are added to firm the LC molecules' shapes through 3D gel net work, finally developing a new special kind of soft materials which exhibit both LC materials' advantages and gels' unique natures including flowability, mechanical behavior, heat stability, and so on. Considering LC materials have diverse stim uliresponsive properties [11][12][13] and many device applications such as LC gratings, [14] polymerstabilized blue phase (PSBP) I film, [15] or multiresponsive composite films, [16] the combina tion of LC materials and gels will help create more possibili ties to prepare multifunctional materials and devices. Previous study results [17] have shown that LC gel would produce vast transmittance differences through the transformation between light scattering and light transmission by LC molecules' stim uliresponsive properties such as photoresponse, electrore sponse, temperature response, and magnetic response. [14,[18][19][20][21][22] And this method could greatly simplify the LC devices' struc ture by abandoning the use of Polaroid. For example, Jang and coworkers [23] reported a light scattering display using dendritic physical gel. Kato and coworkers [24][25][26] had prepared various rigid light scattering cells. Levy and coworkers [27] made a huge and rigid electrooptical window based on liquidcrystal disper sions in sol-gel matrices. Xie and coworkers [28] prepared LC gels through the selfassembly of sorbitol derivatives as gela tors in 5CB, showing its potential application in selfsupporting lightscattering electrooptical displays. Zhao and coworkers [29,30] reported a fluorescent LC gels and shown a high contrast of photoluminescence. In general, these light scattering LC devices all present rigid condition and have the features of A stretchable, flexible electroresponsive liquid-crystal (LC) device with extremely simple structure is reported. It exhibits excellent light-transmission control even during successive 45% stretching, which is due to the combination of a super-strong LC gel network (5CB/POSS-G1-BOC) and transparent conductive electrodes composed of silver nanowires (AgNWs) embedded in polyurethane (PU). The uniaxial tensile deformation mechanism of the gel network is also explained by the uniform distributi...

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“…And we propose a mechanism to explain the advantage of multilayer SiNx process. Low RF power for first lamination could reduce the plasme damage to OLED devices, and the rest of lamintion was precisely tuned by mechanical and optical models, besides, multilayer process could reduce the internal deffects [6,7,8] . All these results in better barrier performance.…”

Section: Tfe Performance On Oled Devices With New Multilayer Sinx Strmentioning

confidence: 99%

P‐10.2: The Influences of PECVD Deposition SiNx on the Thin Film Encapsulation Performance

Liu

Zhu

et al. 2018

Symp Digest of Tech Papers

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Low‐temperature PECVD technology was used to fabricated inorganic layer in thin film encapsulation for AMOLED display. We systematically obtained SiNx films in different RF power. Stress and refractive index was characterized and analyzed to study the film performance. The results shows that different RF power leads to different film stress, and well‐designed stress‐matched multilayer SiNx will highly improve the TFE reliability. Furthermore, the RA life time (60 °C, 90% RH) of OLED displays with new multilayer SiNx inorganic layer TFE structure has been sharply increased from 240hours to 480hours.

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P‐111: A Thin Film Encapsulation Stack for PLED and OLED Displays

Cited by 23 publications

References 3 publications

Dissolution Behaviors and Applications of Silicon Oxides and Nitrides in Transient Electronics

Dissolution Behaviors and Applications of Silicon Oxides and Nitrides in Transient Electronics

Electroresponsive Stretchable Liquid‐Crystal Device with Deformable Gel Network

P‐10.2: The Influences of PECVD Deposition SiNx on the Thin Film Encapsulation Performance

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