Real RGB printing AMOLED with high pixel per inch value

Huo, Sitao; Shao, Li‐Qin; Dong, Ting; Liang, Jisheng; Bi, Ze-Tong; He, Min; Li, Zhe; Gao, Zhuo; Song, Jiaxin

doi:10.1002/jsid.867

Cited by 11 publications

(6 citation statements)

References 13 publications

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“…4d). Thanks to this superior patterning capability of the SI-OLES, furthermore, the full-color SI-OLED array corresponding to 949 ppi was successfully achieved, exhibiting the highest resolution compared to the reported full-color OLED arrays via various OLED patterning methods [45][46][47][48][49][50][51][52][53][54][55] (Fig. 4e, f and Supplementary Fig.…”

Section: Demonstration Of High-resolution Full-color Si-oledsmentioning

confidence: 88%

Silicone engineered anisotropic lithography for ultrahigh-density OLEDs

et al. 2022

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Ultrahigh-resolution patterning with high-throughput and high-fidelity is highly in demand for expanding the potential of organic light-emitting diodes (OLEDs) from mobile and TV displays into near-to-eye microdisplays. However, current patterning techniques so far suffer from low resolution, consecutive pattern for RGB pixelation, low pattern fidelity, and throughput issue. Here, we present a silicone engineered anisotropic lithography of the organic light-emitting semiconductor (OLES) that in-situ forms a non-volatile etch-blocking layer during reactive ion etching. This unique feature not only slows the etch rate but also enhances the anisotropy of etch direction, leading to gain delicate control in forming ultrahigh-density multicolor OLES patterns (up to 4500 pixels per inch) through photolithography. This patterning strategy inspired by silicon etching chemistry is expected to provide new insights into ultrahigh-density OLED microdisplays.

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Section: Demonstration Of High-resolution Full-color Si-oledsmentioning

confidence: 88%

Silicone engineered anisotropic lithography for ultrahigh-density OLEDs

et al. 2022

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“…This is particularly surprising given the ubiquity of square/rectangular (Mai & Richerzhagen 2007) and hexagonal (Huo et al. 2020) droplets in contexts such as the printing of active matrix organic light-emitting diode (AMOLED) screens.…”

Section: Introductionmentioning

confidence: 99%

“…However, a critical avenue is the behaviour of non-circular droplets, with the only existing studies being numerical (Freed-Brown 2015;Sáenz et al 2017) or considering the early stages of deposit formation (Moore et al 2022). This is particularly surprising given the ubiquity of square/rectangular (Mai & Richerzhagen 2007) and hexagonal (Huo et al 2020) droplets in contexts such as the printing of active matrix organic light-emitting diode (AMOLED) screens.…”

Section: Introductionmentioning

confidence: 99%

Evaporation of non-circular droplets

Wray

Moore

2023

J. Fluid Mech.

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The dynamics of thin, non-circular droplets evaporating in the diffusion-limited regime is examined. The challenging non-rectilinear mixed boundary problem this poses is solved using a novel asymptotic approach and an asymptotic expansion for the evaporative flux from the free surface of the droplet is found. While theoretically valid only for droplets that are close to circular, it is demonstrated that the methodology can successfully be applied to droplets with a wide variety of footprint shapes, including polygons and highly non-convex domains. As our solution for the flux fundamentally represents a novel result in potential theory, the applications are numerous, as the mixed boundary value problem arises in fields as diverse as electrostatics and contact mechanics. Here, we demonstrate the practicality of our result by considering the analytically tractable case of deposition of solute from large droplets in detail, including a matched asymptotic analysis to resolve the pressure, streamlines and deposition up to second order.

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“…Furthermore, an OLED display panel area is limited by the size of the vacuum deposition chamber. On the other hand, solution processed roll-to-roll (R2R) printing can offer inexpensive and high throughput fabrication for large-area OLEDs [4][5][6][7][8][9] . To this end, current research and development have seen the use of inkjet printing 10,11 , gravure printing 12,13 , flexography printing 14,15 , screen printing 16,17 , slot-die coating 18 , blade coating 19,20 and spray coating 21,22 to fabricate OLEDs.…”

Section: Introductionmentioning

confidence: 99%