Introduction

Luo, Fang-Chen; Souk, Jun H.; Morozumi, Shinji; Bita, Ion

doi:10.1002/9781119161387.ch1

Cited by 2 publications

(3 citation statements)

References 8 publications

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“…Among them, thin film encapsulation (TFE) technology has emerged as the most promising choice due to its excellent permeation rate and flexibility. Studies on TFE techniques involve sputter-coating, IJP, CVD and ALD [46,[200][201][202][203][204]. Recent studies on TFE have been predominantly focused on a hybrid approach that involves an inorganic/organic multiplayer stack.…”

Section: Encapsulation Layermentioning

confidence: 99%

“…Currently, AMOLED displays are manufactured on mid to large generation (Gen) glass and flexible substrates [43][44][45]. The enormous manufacturing volume reduces the cost by leveraging economies of scale; however, the highly complex manufacturing processes adopted from the semiconductor manufacturing process-photolithography patterning, vacuum deposition (including both PVD and chemical vapor deposition (CVD)) and etchingdrive up the capital costs required for AMOLED panel production [46]. As the returns from further scaleup either on larger substrate size or higher volume diminishes, the next step for cutting production costs will require manufacturing of AMOLED panels with less expensive processes.…”

Section: Introductionmentioning

confidence: 99%

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Opportunities for cost-effective manufacturing of fully printed high performance displays enabled by vertical light-emitting transistor pixels

Vasilyeva,

Chen,

Katsui

et al. 2023

Flex. Print. Electron.

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With the Vertical Organic Light-Emitting Transistor (VOLET), we introduce a promising solution that could significantly benefit the manufacturing of displays, accelerating the wide adoption of flexible and printed electronics. The VOLET – like conventional, lateral channel, organic thin film transistors (OTFTs) – is compatible with a variety of printing techniques as well as flexible substrates and low-temperature processing. In combination these devices will enable a more cost-effective approach to mass-production that can dramatically extend the market potential of active-matrix organic light-emitting diode (AMOLED) displays. In this paper we discuss the prospects that AMOLED presents for the future of the display market, with a focus on the innovative VOLET device architecture. We assess how the integration of this device into active-matrix displays can contribute to the long range sustained competitiveness of AMOLED technology. We review recent progress in mass production techniques for printed electronics, with a particular emphasis on large-scale carbon nanotube (CNT) material deposition. Finally, we explore the prospects for fully printed active-matrix light-emitting displays, including a review of high-performance printed components whose integration could facilitate the mass production of low-cost, high-performance, VOLET based AMOLEDs.

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Section: Encapsulation Layermentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Opportunities for cost-effective manufacturing of fully printed high performance displays enabled by vertical light-emitting transistor pixels

Vasilyeva,

Chen,

Katsui

et al. 2023

Flex. Print. Electron.

View full text Add to dashboard Cite

show abstract

“…Meanwhile, the United States Environmental Protection Agency identified the GHG emissions from semiconductor device manufacturing to be one of the foremost challenges for climate change . One sector of electronics that is of particular impact is flat panel displays, which rely on low-temperature polysilicon and metal-oxide (known as LTPO) semiconductor thin-film transistors (TFTs) for their backplane electronics. These TFTs require extensive use of polyfluorinated chemicals and vacuum-based processing in their manufacture, with energy requirements for operating the fabs that has increased by orders of magnitude in the last 30 years .…”

mentioning

confidence: 99%

All-Carbon Thin-Film Transistors Using Water-Only Printing

Smith

Meikle

et al. 2023

Nano Lett.

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Printing thin-film transistors (TFTs) using nanomaterials is a promising approach for future electronics. Yet, most inks rely on environmentally harmful solvents for solubilizing and postprint processing the nanomaterials. In this work, we demonstrate water-only TFTs printed from all-carbon inks of semiconducting carbon nanotubes (CNTs), conducting graphene, and insulating crystalline nanocellulose (CNC). While suspending these nanomaterials into aqueous inks is readily achieved, printing the inks into thin films of sufficient surface coverage and in multilayer stacks to form TFTs has proven elusive without high temperatures, hazardous chemicals, and/or lengthy postprocessing. Using aerosol jet printing, our approach involves a maximum temperature of 70 °C and no hazardous chemicals�all inks are aqueous and only water is used for processing. An intermittent rinsing technique was utilized to address the surface adhesion challenges that limit film density of printed aqueous CNTs. These findings provide promising steps toward an environmentally friendly realization of thin-film electronics.

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Introduction

Cited by 2 publications

References 8 publications

Opportunities for cost-effective manufacturing of fully printed high performance displays enabled by vertical light-emitting transistor pixels

Opportunities for cost-effective manufacturing of fully printed high performance displays enabled by vertical light-emitting transistor pixels

All-Carbon Thin-Film Transistors Using Water-Only Printing

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