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相关概念视频

Arc Length Function01:22

Arc Length Function

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The arc length function represents the total distance traveled along a smooth curve measured from a fixed starting point to a variable endpoint. For curves that are continuous and differentiable, arc length provides a precise way to quantify distance when straight-line approximations are insufficient.To derive arc length, the curve is divided into many small segments. Each segment is approximated by a straight line whose length depends on the horizontal and vertical changes over that interval.
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A high-voltage power line spans a 40-meter horizontal distance between two transmission towers, resulting in a 10-meter vertical sag due to the effects of gravity and thermal expansion. The curve formed by the suspended cable is a catenary, which accurately models the behavior of a uniform, flexible cable under its own weight. Unlike a parabolic shape, the catenary is described by the hyperbolic cosine function and offers a precise representation of the cable's form.In this setup, engineers...
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Passive filters are utilized to shape the frequency spectrum of signals across a diverse array of applications. These filters, using only passive elements like resistors (R), inductors (L), and capacitors (C), are capable of selectively allowing or blocking certain frequency ranges without the need for external power sources.
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过的阴极真空弧沉积用于喷墨印刷的OLED封装.

Zhuo Gao1,2, Songju Li2, Lei Wang1

  • 1State Key Laboratory of Luminescent Materials and Devices, Institute of Polymer Optoelectronic Materials and Devices, South China University of Technology, Guangzhou 510640, China.

Materials (Basel, Switzerland)
|February 13, 2026
PubMed
概括

过式正极真空弧 (FCVA) 技术显著提高了灵活电子产品的Al2O3沉积率. 这种高速,无的工艺增强了氧化物薄膜晶体管的稳定性和OLED设备的寿命.

关键词:
过的正极真空电弧沉积.喷墨印刷是一种喷墨印刷.可靠性的可靠性薄膜封装的封装方法

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科学领域:

  • 材料科学 材料科学 材料科学
  • 薄膜技术 薄膜技术
  • 电子 包装 电子 包装

背景情况:

  • 原子层沉积 (ALD) 沉积率低,限制了其在高通量制造中的应用.
  • 传统的ALD过程可能会引入,可能会损害氧化物薄膜晶体管 (TFT) 的稳定性.
  • 有效的封装对于灵活的电子设备,特别是OLED的性能和寿命至关重要.

研究的目的:

  • 开发一种使用过阴极真空弧 (FCVA) 技术的Al2O3膜的高速沉积方法.
  • 评估FCVA-Al2O3薄膜对于OLED混合薄膜封装 (TFE) 的适用性.
  • 评估基于FCVA的TFE对氧化物TFT和OLED设备的性能和可靠性的影响.

主要方法:

  • 引入了高速 Al2O3 沉积的 FCVA 技术,达到 15 nm/min.
  • 通过将FCVA-Al2O3与喷墨印刷的有机层集成而制造的混合TFE结构.
  • 评估了屏障特性 (WVTR,表面粗度,残余应力) 和设备性能 (TFT电气特性,OLED效率,寿命).

主要成果:

  • FCVA-Al2O3的沉积率大约是传统ALD的十倍.
  • 无FCVA工艺确保了氧化物TFT背景图的高稳定性.
  • 混合TFE表现出优异的水蒸气屏障特性 (WVTR为1.2 × 10^-4 g/m^2/day).
  • 氧化物TFT电气性能在封装后没有显著的退化.
  • 用FCVA-Al2O3封装的OLED设备在加速老化下显示寿命为300小时,几乎是未封装设备的两倍.

结论:

  • FCVA技术为Al2O3薄膜沉积提供了高通量,高性能的解决方案.
  • 基于FCVA的混合TFE提供了优良的屏障特性,适合灵活的电子产品.
  • FCVA技术提高了OLED设备的可靠性和寿命,而不会影响TFT性能.