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相关概念视频

Design Example: Resistive Touchscreen01:14

Design Example: Resistive Touchscreen

A device engineer plays a crucial role in designing user interfaces for mobile devices. One such interface is the resistive touchscreen, which fundamentally consists of two metallic layers: a flexible upper layer and a rigid lower layer, separated by a narrow gap. The high resistance between these two layers is a key characteristic of this design.
When a user touches the screen, the two layers make contact at a specific point known as the touchpoint. This contact reduces the resistance between...

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Orientational Transition in a Liquid Crystal Triggered by the Thermodynamic Growth of Interfacial Wetting Sheets
06:26

Orientational Transition in a Liquid Crystal Triggered by the Thermodynamic Growth of Interfacial Wetting Sheets

Published on: May 15, 2017

使用微型图案表面对齐的可变性阴性液晶装置.

Jong-Hyun Kim1, Makoto Yoneya, Hiroshi Yokoyama

  • 1Yokoyama Nano-structured Liquid Crystal Project, ERATO, Japan Science and Technology Corporation, TRC 5-9-9 Tokodai, Tsukuba, Ibaraki 300-2635, Japan. kimjh@nanolc.jst.go.jp

Nature
|November 15, 2002
PubMed
概括

研究人员开发了一种新的液晶 (LC) 显示技术,使用表面图案来创建三个稳定的分子方向. 这一突破有望降低先进电子显示器的功耗.

科学领域:

  • 材料科学 材料科学 材料科学
  • 物理 物理学 物理
  • 显示技术 显示技术

背景情况:

  • 液晶 (LC) 设备在高信息内容显示器中具有降低功耗的潜力.
  • 在常用的尼马特LC中实现多稳定方向一直是工业应用的重大挑战.
  • 之前的工作证明了使用象棋板图案诱导直角LC对齐的双相稳定性.

研究的目的:

  • 为了设计一个可靠的表面对齐的形LC装置.
  • 探索使用六倍对称来实现多个稳定的LC方向.
  • 开发一种与柔性显示器兼容的表面驱动开关模式.

主要方法:

  • 使用原子力显微镜在聚胺表面上刻出一个具有六倍对称性的微观图案.
  • 利用微观定向域的六角对称性.
  • 在稳定的LC方向之间切换时应用平面内电场.

主要成果:

  • 成功实现了一个可靠的表面对齐的阴性LC装置.
  • 证明了三种相互切换的宏观LC方向.
  • 开关机制是表面驱动的,使其与灵活的显示应用程序兼容.

结论:

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  • 六倍对称的表面图案可靠地产生了三个稳定的阴性LC方向.
  • 这种方法克服了对多稳定装置的单轴阴性LC的局限性.
  • 开发的技术适用于低功耗,高性能柔性显示器.