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Design Example: Resistive Touchscreen

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...

Tactile and Chemical Senses

Tactile and Chemical Senses

Tactile senses encompass touch, temperature, and pain, each mediated by specific receptors. Touch receptors detect mechanical energy or pressure against the skin. Sensory fibers from these receptors enter the spinal cord and relay information to the brain stem. Here, most fibers cross over to the opposite side of the brain. The touch information then moves to the thalamus, which projects a map of the body's surface onto the somatosensory areas of the parietal lobes in the cerebral cortex.

Somatosensation

Somatosensation

The somatosensory system relays sensory information from the skin, mucous membranes, limbs, and joints. Somatosensation is more familiarly known as the sense of touch. A typical somatosensory pathway includes three types of long neurons: primary, secondary, and tertiary. Primary neurons have cell bodies located near the spinal cord in groups of neurons called dorsal root ganglia. The sensory neurons of ganglia innervate designated areas of skin called dermatomes.

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Updated: Sep 9, 2025

Measurement of Vibration Detection Threshold and Tactile Spatial Acuity in Human Subjects

Measurement of Vibration Detection Threshold and Tactile Spatial Acuity in Human Subjects

Published on: September 1, 2016

サブミリメートルの質感認識のための高密度タクティルセンサ配列

Chengran Cao¹, Guocheng Wang^1,2, Yixin Liu¹

¹Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, China.

Sensors (Basel, Switzerland)

|August 28, 2025

まとめ

この要約は機械生成です。

研究者は10μmのピラミッドチップを持つ高密度タクティルセンサを開発し,超高感度と500μmの解像度を達成しました. この触覚センサー技術は麻痺した人の質感を再生できます

キーワード:

炭素ナノチューブ高密度配列マイクロ構造タクティルセンサーテクスチャー認識

さらに関連する動画

A Tactile Automated Passive-Finger Stimulator TAPS

A Tactile Automated Passive-Finger Stimulator TAPS

Published on: June 3, 2009

Tactile Semiautomatic Passive-Finger Angle Stimulator TSPAS

Tactile Semiautomatic Passive-Finger Angle Stimulator TSPAS

Published on: July 30, 2020

関連する実験動画

Last Updated: Sep 9, 2025

Measurement of Vibration Detection Threshold and Tactile Spatial Acuity in Human Subjects

Measurement of Vibration Detection Threshold and Tactile Spatial Acuity in Human Subjects

Published on: September 1, 2016

A Tactile Automated Passive-Finger Stimulator TAPS

A Tactile Automated Passive-Finger Stimulator TAPS

Published on: June 3, 2009

Tactile Semiautomatic Passive-Finger Angle Stimulator TSPAS

Tactile Semiautomatic Passive-Finger Angle Stimulator TSPAS

Published on: July 30, 2020

科学分野:

生物医学工学
材料科学
神経科学

背景:

従来のタクティルのセンサーは解像度や感度やクロスストークに限界があります
麻痺の患者にとって触覚の感覚を回復することが極めて重要です

研究の目的:

現在の技術の限界を克服する高密度のタクティルセンサ配列を開発する.
高い空間解像度と触覚フィードバックの感度を実現します.

主な方法:

10ミクロンスケールのピラミッドの尖端を持つ触覚センサーの製造.
256x256のアクティブマトリックス薄膜トランジスタ (TFT) の読み取りと柔軟なレジスティヴセンシング層の統合.
感度,応答時間,安定性,質感の再構築を含むセンサーの性能をテストする.

主要な成果:

超高感度 (0. 2〜0. 5kPaの範囲で8. 082kPa−1) を達成した.
500μmの空間解像度に達し人間の指先の識別を上回りました
迅速な応答 (125 ms),高い安定性 (> 1000 サイクル),および500 μmのテクスチャとブレイルのパターンの再構築が成功しました.

結論:

開発されたタクティルセンサは,高精度タクティル知覚のためのスケーラブルなプラットフォームを提供します.
この技術は麻痺した人の感覚フィードバックを回復させるのに応用できます
先進的な触覚センサーは繊細なテクスチャの認識と人間と機械のインターフェースの改善を可能にします