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Related Concept Videos

Design Example: Resistive Touchscreen01:14

Design Example: Resistive Touchscreen

391
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...
391

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Supreme-black levels enabled by touchproof microcavity surface texture on anti-backscatter matrix.

Kuniaki Amemiya1, Yuhei Shimizu1, Hiroshi Koshikawa2

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Researchers developed a new touchproof "supreme black" material with record-low reflectance (below 0.0002). This breakthrough enables unprecedented black levels for advanced display technologies and immersive visual experiences.

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Area of Science:

  • Materials Science
  • Optics
  • Display Technology

Background:

  • High-dynamic range (HDR) displays require true black levels (reflectance < 0.1%) for optimal performance.
  • Existing ultra-black materials are often fragile and not touchproof.
  • Achieving supreme black necessitates anti-reflection, low scattering, and optical thickness.

Purpose of the Study:

  • To develop a durable, touchproof material with record-low hemispherical reflectance.
  • To meet the stringent black level requirements for next-generation immersive displays.
  • To advance display technology for applications like virtual healthcare and remote collaboration.

Main Methods:

  • Fabrication of a novel material using superwavelength surface microtexturing with nanoscale details.
  • Incorporation of a composition engineered for low Mie backscattering.
  • Utilizing an optional underlayer to enhance optical thickness and reduce reflectance.

Main Results:

  • Achieved a record-low hemispherical reflectance below 0.0002 (absorptance > 0.9998).
  • Developed a touchproof material that is 10-100 times blacker than previous super-black materials.
  • Demonstrated potential for ambient contrast ratios exceeding 10^4 in display devices.

Conclusions:

  • The developed supreme black material satisfies key requirements for advanced displays.
  • This innovation paves the way for enhanced visual experiences in immersive technologies.
  • The material offers a robust solution for achieving unprecedented black levels in commercial displays.