Haptic Touch Panel Display Rigid Body Vibration Distribution
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Solution Overview
Problem
Existing haptic touch panel displays face challenges in providing a satisfactory haptic sensation with fewer actuators, as the vibration caused by actuators disposed on the back surface is easily attenuated due to the thinness of the display and its internal structure.
Innovation Solution
The implementation of a haptic touch panel display that includes a display panel, a touch panel, a back bezel, a plurality of actuators, and rigid bodies disposed between the back bezel and the actuators. This configuration allows for the propagation of vibration from the actuators to a wider area, enhancing the haptic sensation while reducing the number of actuators needed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If actuators are disposed on the back surface of the display panel, then the haptic touch panel display can generate vibration, but the vibration is easily attenuated due to the thinness of the display and internal structure
Solution Approach 1:
A rigid body is introduced as an intermediary component between the actuator and the back bezel. The actuator is disposed on the back surface of the rigid body, which then transmits vibration to the back bezel. This intermediary structure prevents direct attachment of the actuator to the thin display panel, reducing vibration attenuation and improving haptic sensation quality.
2Reliability
If more actuators are used to compensate for vibration attenuation, then haptic sensation quality improves, but manufacturing cost and system complexity increase
Solution Approach 1:
The rigid body acts as a vibration amplification and distribution medium. By attaching fewer actuators to the rigid body and allowing the rigid body to transmit and distribute vibrations across the back bezel, the system achieves satisfactory haptic sensation quality without requiring a large number of actuators, thus reducing device complexity and manufacturing cost.
3Reliability
If more actuators are used to compensate for vibration attenuation, then haptic sensation quality improves, but manufacturing cost increases
Solution Approach 1:
The rigid body serves as a cost-effective intermediary that amplifies and distributes vibrations from fewer actuators across the entire back bezel surface. This approach maintains haptic sensation quality while significantly reducing the number of actuators required, thereby lowering manufacturing costs.
4Length of moving object
If the display panel is made thinner to reduce device thickness, then device portability improves, but vibration transmission capability deteriorates
Solution Approach 1:
The rigid body is positioned between the actuator and the thin display panel, serving as a vibration transmission bridge. This allows the display panel to remain thin for portability while the rigid body compensates for the reduced vibration transmission capability by providing a more robust vibration pathway through the back bezel.
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 solution effectively presents a satisfactory haptic sensation over a wider area with fewer actuators, reducing manufacturing costs and system complexity while maintaining the intensity and distribution of vibration.
Implementation Method 1
the vibration caused by actuators disposed on the back surface is easily attenuated
Data Source
AI summary
A haptic touch panel display includes: a display panel; a touch panel disposed on an upper surface of the display panel or in the display panel; a back bezel configured to support a lower surface of the display panel; a plurality of actuators; and a plurality of rigid bodies disposed between the back bezel and the plurality of actuators, each of the plurality of rigid bodies being positioned between one of the plurality of actuators and the back bezel.