Simulation of Blur in Transmitted Image through Transparent Plastic for Transparent OLEDs

Kwon, Hyeokjun; Yang, Chang-Mo; Kim, Min‐Cheol; Kim, Choon-Woo; Ahn, Ji‐Young; Kim, Pu-Reum

doi:10.1109/jdt.2016.2528280

Cited by 10 publications

(7 citation statements)

References 14 publications

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“…Further, the visually and quantitatively evaluated results recorded by the digital camera and the WGW photoelectric haze meter are shown in Figure 2. Transparent plastic utilized in windows or goggles is required to have highly transparent and low haze characteristics to achieve a clear view of the objects behind it, 44 which is the first objective that shall be achieved before adopting TPS as a goggles material.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

“…Surface Morphology and Wettability during Water Absorption. Haze is defined as the percentage of light with its direction deviated from that of the incident light by more than 2.5°, 44 which is related to scattering during the light transmission process. Among the factors affecting light scattering, high surface roughness can increase the haze by refraction when incident light passes through material boundaries 46 and can change the contact angle of materials without changing the surface chemical state.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

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Adopting Intrinsic Hydrophilic Thermoplastic Starch Composites to Fabricate Antifogging Sustainable Films with High Antibiosis and Transparency

Zhong

Gao

Weng

et al. 2022

ACS Sustainable Chem. Eng.

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Fogging on transparent surfaces such as goggles causes a series of hazards to users. To fabricate antifogging and low-haze transparent renewable polymer materials, intrinsic hydrophilicity with high water adsorption capability of thermoplastic starch (TPS) had been adopted. Strikingly, when benzoic acid (BA) was blended with thermoplastic starch (TPS-BA), the haze of TPS-BA was only 7.8% when it suffered the cold and warm method of antifogging measurement with 87% transmittance. Simultaneously, TPS-BA achieved an 18 mm inhibition zone for Staphylococcus aureus. To reveal the antifogging mechanism of TPS-BA films, the surficial and interior structure features were evaluated by three-dimensional optical scanner, scanning electron microscopy (SEM), contact angle testing, small-angle X-ray scattering (SAXS), X-ray diffraction (XRD), temperature-dependent Fourier transform infrared (FTIR), dynamic mechanical analysis (DMA), and so on. The incorporation of BA resulted in the roughness (R q), water contact angle (WCA), and crystallinity of the TPS-BA film decreasing from 6.5 to 0.68 μm, 65.1 to 39.9°, and 13.6 to 6.3%, respectively. The amorphous matrix and smooth surface reduced the scattered light, allowing the TPS-BA film to achieve low haze performance and high transmittance. Importantly, the diversified and weakened hydrogen bonds formed among starch, BA, and glycerol could inhibit the formation of starch crystalline regions and allowed hydroxyl groups to quickly bond with water. Thus, when TPS-BA is placed in a high-humidity surrounding, an “expressway” is constructed for water molecules diffusing into the TPS-BA matrix. This novel low-haze, antifogging, sustainable, and facilely fabricated TPS with antibacterial properties is a promising candidate in disposable medical goggles to fight against COVID-19.

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Section: ■ Results and Discussionmentioning

confidence: 99%

Section: ■ Results and Discussionmentioning

confidence: 99%

Adopting Intrinsic Hydrophilic Thermoplastic Starch Composites to Fabricate Antifogging Sustainable Films with High Antibiosis and Transparency

Zhong

Gao

Weng

et al. 2022

ACS Sustainable Chem. Eng.

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“…[ 7–9 ] The lack of the backlighting system, used as a fundamental unit in LCDs, simplifies the design structure and reduces the bulkiness significantly. [ 10 ] In addition, unlike LCDs, which cannot show total black display due to the leakage of a small fraction of the light resulting from the filtered backlight emission, OLEDs can exhibit true black color as the pixels of OLEDs can be completely turned off leading to no light emission. Self‐emissive property of OLEDs also leads to comparably lower power consumption.…”

Section: Introductionmentioning

confidence: 99%

“…Moreover, in addition to superior flexibility and lightweight of OLED materials that enable foldable, bendable, stretchable, and wearable devices, the simpler design, ultrathin thickness, and high transparency of the OLED device layers enable the state‐of‐the‐art transparent display and lighting technologies. [ 10,19 ] Unlike traditional OLEDs, which are opaque at one end and integrate a reflective metal for the efficient redirection of the light toward the other end, where light is emitted through a transparent electrode, in transparent OLEDs (TOLEDs), light can travel and exit through the optically transparent medium in both directions, as these devices use transparent electrodes at both ends. [ 21,22 ] The other device elements, fabrication principles, and operation mechanism of TOLEDs are more of the same in opaque OLEDs.…”

Section: Introductionmentioning

confidence: 99%

Transparent Organic Light‐Emitting Diodes: Advances, Prospects, and Challenges

Huseynova

Lee

Kim

et al. 2021

Advanced Optical Materials

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Transparent organic light‐emitting diodes (TOLEDs) are exciting next‐generation electronic devices that can be embedded and integrated into walls, windows, head‐up panels in commercial and domestic buildings, cars, planes, and other segments of the consumer goods sector. TOLEDs are also fundamental components for the realization of the stacked OLEDs for various industrial and research applications. Furthermore, futuristic smart wearables for clothing as well as medical purposes will also benefit remarkably from the development of TOLEDs. However, the efficiency of TOLEDs is significantly lower than that of their opaque counterparts. The achievement of high‐performance TOLEDs is directly dependent on the properties of the chosen electrode materials as well as the used light extraction techniques. In this review, the reported perspectives of TOLEDs are discussed along with their types, design, and architectures, applied TOLED materials and properties, and the application fields of these transparent devices. The performance of the electrode materials and the commonly used light extraction methods are reviewed in detail as well. The main purpose is to shed light on some of the effective TOLED approaches and the underlying reasons for the frequently encountered issues in these diodes. Auspicious novel fabrication techniques as well as device structures are also highlighted.

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“…The haze of transparent display and/or transparent plastic affects the perceived sharpness or blurriness of the background. The lower the haze, the more clearly the object behind the screen is perceived [10]. In addition, illuminance and the distance from the screen to an object also affect the brightness and sharpness of the object behind the screen.…”

Section: Introductionmentioning

confidence: 99%

P‐35: Evaluation of Perceived See‐through Level for Transparent OLED Displays

Yang

Kim

Kwon³

et al. 2017

Symp Digest of Tech Papers

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See-through capability is an important performance indicator of transparent display. The visibility of the background is affected by the transmittance factor, haze, distance between the transparent display and an object in the background, and the illuminance . In this paper, the perceived see-through level (PSL) is proposed to represent the degree of visibility of the background. The PSL is determined by considering both transmittance factor and haze. Experimental results indicate that the proposed PSL effectively describes the visibility of the background behind the transparent displays.

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Simulation of Blur in Transmitted Image through Transparent Plastic for Transparent OLEDs

Cited by 10 publications

References 14 publications

Adopting Intrinsic Hydrophilic Thermoplastic Starch Composites to Fabricate Antifogging Sustainable Films with High Antibiosis and Transparency

Adopting Intrinsic Hydrophilic Thermoplastic Starch Composites to Fabricate Antifogging Sustainable Films with High Antibiosis and Transparency

Transparent Organic Light‐Emitting Diodes: Advances, Prospects, and Challenges

P‐35: Evaluation of Perceived See‐through Level for Transparent OLED Displays

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