We present a 350°C self‐aligned dual‐gate a‐IGZO backplane technology with a monolithically integrated multi‐layer high‐temperature thin‐film barrier for flexible AMOLED. Thin‐film barrier properties and TFT technology are optimized on 320 x 352mm substrates, and demonstrated in a flexible QQVGA 100 ppi AMOLED display prototype.
The transparent conductive
electrode (TCE) is a key component of
organic light-emitting diodes (OLEDs). High-resolution printed metal
grids are a promising alternative to indium tin oxide (ITO). We present
results for evaporated OLEDs with a printed copper (Cu) grid with
line width below 3 μm. The use of a thick doped hole injection
layer (HIL) prevented electrical shorts and resulted in good quality
OLEDs with acceptable leakage current. We report a detailed analysis
of the microscopic uniformity of light emission and compare the measured
data with simulations based on finite element modeling (FEM) to investigate
various factors that contribute to differences between the Cu grid
OLED and ITO reference device. This insight resulted in design rules
that enable a luminance of the Cu grid OLED that can potentially equal
that of an ITO-based equivalent OLED by using a very fine pitch and
narrow line width of 5 μm and 250 nm, respectively, within the
capabilities of state-of-the-art printing technology.
We present a thin‐film dual‐layer bottom barrier on polyimide that is compatible with 350°C backplane processing for organic light‐emitting diode displays and that can facilitate foldable active‐matrix organic light‐emitting diode devices with a bending radius of <2 mm. We demonstrate organic light‐emitting diodes that survive bending over 0.5 mm radius for 10.000× based on the high‐temperature bottom barrier. Furthermore, we show compatibility of the bottom barrier with the backplane process by fabricating active‐matrix organic light‐emitting diode displays on GEN1‐sized substrates.
Cardiovascular diseases (CVD) represent a serious health problem worldwide, of which atrial fibrillation (AF) is one of the most common conditions. Early and timely diagnosis of CVD is essential for successful treatment. When implemented in the healthcare system this can ease the existing socio-economic burden on health institutions and government. Therefore, developing technologies and tools to diagnose CVD in a timely way and detect AF is an important research topic. ECG monitoring patches allowing ambulatory patient monitoring over several days represent a novel technology, while we witness a significant proliferation of ECG monitoring patches on the market and in the research labs, their performance over a long period of time is not fully characterized. This paper analyzes the signal quality of ECG signals obtained using a single-lead ECG patch featuring self-adhesive dry electrode technology collected from six cardiac patients for 5 days. In particular, we provide insights into signal quality degradation over time, while changes in the average ECG quality per day were present, these changes were not statistically significant. It was observed that the quality was higher during the nights, confirming the link with motion artifacts. These results can improve CVD diagnosis and AF detection in real-world scenarios.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.