Display Haptic Assembly With Vibration Shielding at Touch Points

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Solution Overview

Problem

Existing display devices lack effective haptic feedback mechanisms that allow vibration to be felt only at the specific location of touch or pressure input, as vibrations often propagate beyond the intended area due to the absence of efficient shielding solutions.

Innovation Solution

Incorporating a vibration generator under the display panel, adjacent to a force sensor, and surrounding it with an electromagnetic wave shielding member to contain vibrations within the desired area, while also using adhesive layers for secure positioning and waterproofing to prevent moisture and dust ingress.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If a vibration generator is incorporated into the display device to provide haptic feedback, then user interaction is enhanced, but vibrations propagate beyond the intended area reducing precision

Engineering Contradiction:

Improvehaptic feedbackVSAvoidvibration location precision

Core Design Contradiction:

Ease of operationVSManufacturing precision

Solution Approach 1:

An electromagnetic wave shielding member is introduced as an intermediary component between the vibration generator and the display panel. This shielding member selectively blocks vibration propagation in specific directions while allowing vibration transmission at the intended touch location, thereby resolving the contradiction between providing haptic feedback and maintaining vibration location precision

Inventive Principle:

Principle #24Intermediary (Mediator)

2Stability of the object's composition

If adhesive layers are used to secure the vibration generator and shielding member, then positioning is stabilized, but device complexity increases

Engineering Contradiction:

Improvecomponent positioningVSAvoidassembly structure

Core Design Contradiction:

Stability of the object's compositionVSDevice complexity

Solution Approach 1:

The adhesive layer is designed to perform multiple functions simultaneously: it secures the vibration generator to the shielding member, attaches the shielding member to the display panel, and provides waterproofing. This multi-functionality reduces the need for separate components for each function, thereby stabilizing component positioning without significantly increasing device complexity

Inventive Principle:

Principle #6Universality (Multi-functionality)

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

This configuration enables precise haptic feedback by ensuring vibrations are felt only at the touch location, enhancing user interaction and maintaining the device's waterproof and dustproof capabilities.

Implementation Method 1

a vibration generator may be employed by a display device... to realize haptic feedback

Methodology Applied

Scientific EffectVibration: Vibration

Implementation Method 2

an electromagnetic wave shielding member to contain vibrations within the desired area

Methodology Applied

Scientific EffectElectromagnetic shielding: Faraday Cage

Implementation Method 3

using adhesive layers for secure positioning

Methodology Applied

Scientific EffectAdhesion: Adhesive

Implementation Method 4

waterproofing to prevent moisture and dust ingress

Methodology Applied

Scientific EffectWaterproofing:

Data Source

PatentUS12135844B2Display device including force sensor and vibration generator

Publication Date: 2024.11.05 SAMSUNG DISPLAY CO LTD

AI summary

A display device includes: a display panel; a frame disposed on one surface of the display panel; a vibration generator disposed on one surface of the frame opposite to the one surface of the display panel; and a shielding member which protrudes from the one surface of the middle frame.