Display Panel Haptics With Shielded Localized Vibration
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Solution Overview
Problem
Existing display devices struggle to provide effective haptic feedback by generating vibration only at the specific location of user touch or pressure on the display panel.
Innovation Solution
A display device comprising a display panel, a first force sensor, a first vibration generator, and a first electromagnetic wave shielding member, where the vibration generator is positioned under the display panel and adjacent to the force sensor, and the electromagnetic wave shielding member surrounds the side surfaces of the vibration generator to confine the vibration to the touch or pressure area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a vibration generator is incorporated into a touch panel or force sensor to provide haptic feedback, then the user experience is improved through tactile feedback, but the vibration may spread to areas beyond the touch point, reducing the precision of haptic feedback
Solution Approach 1:
The patent introduces an electromagnetic wave shielding member as an intermediary element positioned between the vibration generator and the display panel. This shielding member selectively blocks electromagnetic waves and vibration transmission, allowing the vibration generator to produce haptic feedback while preventing the vibration from spreading to unintended areas. The shielding member acts as a mediator that enables controlled vibration transmission only at the specific touch location, thereby resolving the contradiction between providing effective haptic feedback and maintaining vibration localization precision.
2Ease of operation
If the vibration generator is disposed under the display panel adjacent to the force sensor, then the haptic feedback is provided at the touch location, but the electromagnetic waves from the vibration generator may interfere with the force sensor detection
Solution Approach 1:
The electromagnetic wave shielding member serves as a protective intermediary that filters electromagnetic waves generated by the vibration generator, preventing them from interfering with the force sensor's detection capabilities. This shielding member allows mechanical vibration transmission for haptic feedback while blocking electromagnetic interference, thus enabling the vibration generator to be positioned adjacent to the force sensor without compromising sensor accuracy.
3Adaptability or versatility
If multiple vibration generators are used to provide haptic feedback at different locations, then the haptic feedback coverage is improved, but the device complexity and space requirement increase
Solution Approach 1:
The patent divides the haptic feedback system into multiple independent vibration generators, each positioned adjacent to specific force sensors at different locations on the display panel. Each vibration generator is equipped with its own electromagnetic wave shielding member, creating modular units that can be independently controlled. This segmentation allows haptic feedback to be provided at multiple specific locations simultaneously, improving coverage while maintaining manageable device complexity through standardized modular components.
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
The solution allows for precise haptic feedback by ensuring that vibration is felt only at the point of user input, enhancing the user experience by providing localized and effective tactile feedback.
Implementation Method 1
a first vibration generator disposed under the display panel and adjacent to the first force sensor... The first vibration generator vibrates when the first force sensor detects a force
Implementation Method 2
a first electromagnetic wave shielding member surrounding side surfaces of the first vibration generator... the vibration caused by a vibration generator is blocked by an electromagnetic wave shielding member
Data Source
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AI summary
A display device includes a display panel, a first force sensor, a first vibration generator, and a first electromagnetic wave shielding member. The first force sensor is disposed under the display panel. The first vibration generator is disposed under the display panel and adjacent to the first force sensor. The first electromagnetic wave shielding member surrounds side surfaces of the first vibration generator.