Full-color quantum dots active matrix display fabricated by ink-jet printing

Jiang, Changyun; Mu, Lan; Zou, Jianhua; He, Zhiwei; Zhong, Zhenji; Wang, Lei; Xu, Miao; Wang, Jian; Peng, Junbiao; Cao, Yong

doi:10.1007/s11426-017-9087-y

Cited by 72 publications

(53 citation statements)

References 39 publications

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“…We measured luminous intensities of up to 2.8 cd A −1 at a luminance of 3000 cd m −2 , which corresponds to a maximal external quantum efficiency (EQE) of 2.4% (Figure d). This shows that high‐resolution inkjet printing is a feasible route to efficient QD displays (a comparison to existing devices can be found in Table S3, Supporting Information) . As a digital patterning technology, inkjet printing gives rapid access to a wide range of geometries (Figure e) as required for rapid prototyping, personalized devices, or 3D architectures with integrated displays.…”

Section: Resultsmentioning

confidence: 90%

“…Inkjet printing is a widely available, comparatively straightforward technique that is material‐effective and can form individual pixels and is very flexible in the design of the printed device . Jiang et al printed a full‐color QLED display with a pixel density of 120 pixels per inch (ppi) using a commercial piezo print head and reported a maximum brightness of 400 cd m −2 . The main challenge in high‐resolution inkjet printing is to generate single ultra‐small and stable droplets that dry into uniform pixels.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

High‐Resolution Inkjet Printing of Quantum Dot Light‐Emitting Microdiode Arrays

Yang

Zhang

Kang

et al. 2019

Advanced Optical Materials

158

122

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The direct printing of microscale quantum dot light‐emitting diodes (QLEDs) is a cost‐effective alternative to the placement of pre‐formed LEDs. The quality of printed QLEDs currently is limited by nonuniformities in droplet formation, wetting, and drying during inkjet printing. Here, optimal ink formulation which can suppress nonuniformities at the pixel and array levels is demonstrated. A solvent mixture is used to tune the ejected droplet size, ensure wetting, and provoke Marangoni flows that prevent coffee stain rings. Arrays of green QLED devices are printed at a resolution of 500 pixels in.−1 with a maximum luminance of ≈3000 cd m−2 and a peak current efficiency of 2.8 cd A−1. The resulting array quality is sufficient to print displays at state‐of‐the‐art resolutions.

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Section: Resultsmentioning

confidence: 90%

Section: Introductionmentioning

confidence: 99%

High‐Resolution Inkjet Printing of Quantum Dot Light‐Emitting Microdiode Arrays

Yang

Zhang

Kang

et al. 2019

Advanced Optical Materials

158

122

View full text Add to dashboard Cite

show abstract

“…The implementation of active-matrix QLEDs (AMQLEDs) is highly meaningful for the realization of QLED displays. A few companies and research groups have demonstrated monochromic or full-color AMQLEDs [67][68][69][70][71][72][73], as shown in Figure 2. For the monochromatic AMQLEDs, the QD layer can be formed through spin-coating.…”

Section: Demonstration Of Active-matrix Qled Displaysmentioning

confidence: 99%

Progress of display performances: AR, VR, QLED, and OLED

Jang

Lee

Kim

et al. 2020

Journal of Information Display

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In 2019, the device performances of the display technologies were largely advanced by the development of new materials and of the device architecture and driving scheme. The recent progress in the areas of virtual reality (VR), augmented reality (AR), quantum dot light-emitting diode (QLED), and organic light-emitting diode (OLED) is comprehensively summarized and discussed in this paper. ARTICLE HISTORY

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“…In 2016, a research team from South China University of Technology demonstrated a 2-in., 120-ppi full-color active-matrix-QLED panel that contained some inkjet-printed layers and some evaporated layers. 13 one year later, big panel makers such as TCL and BoE showed their own demo of a full-color active-matrix-QLED (AMQLED) panel with all layers inkjet printed except for the electrodes. In term of mass production, inkjet-printing technology is also making fast progress.…”

Section: Solution Processingmentioning

confidence: 99%