Tactile Display Structure With Adjustable Height and Clear Light Paths
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Solution Overview
Problem
Existing tactile display apparatuses struggle to express tactile information without degrading image quality, as they often use technologies that interfere with the displayed images.
Innovation Solution
A tactile display apparatus with height-adjustable tactile transfer devices and light-emitting devices, where the tactile transfer devices are designed not to block light from the light-emitting devices, using origami structures and lenses to maintain image clarity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If tactile transfer devices are added to express tactile information, then tactile feedback capability is improved, but image quality deteriorates due to light blocking
Solution Approach 1:
The tactile transfer devices utilize the vertical dimension (height adjustment) rather than occupying horizontal space on the display substrate. By folding and unfolding in the vertical direction, the devices can change height without blocking light horizontally, thus maintaining image quality while providing tactile feedback.
Solution Approach 2:
The tactile transfer devices are designed with adjustable height through folding and unfolding mechanisms. This dynamic structure allows the devices to change their vertical position based on operational needs, enabling tactile feedback when required while maintaining a flat profile during image display to avoid light blocking.
2Adaptability or versatility
If tactile transfer devices are positioned on the display substrate, then tactile feedback is enabled, but light from light-emitting devices is blocked
Solution Approach 1:
Instead of positioning tactile devices in the horizontal plane where they would block light, the invention places them in the vertical dimension with adjustable height. The devices can be folded down flat during image display or folded up to provide tactile feedback, eliminating light blocking while maintaining functionality.
Solution Approach 2:
The display substrate is functionally segmented into light-emitting device regions and tactile transfer device regions. The tactile devices are positioned in specific areas that do not overlap with light-emitting devices, and their height is adjusted to avoid blocking light paths during image display.
3Measurement precision
If tactile transfer devices are made height-adjustable, then tactile expression precision is improved, but device complexity increases
Solution Approach 1:
The tactile transfer devices incorporate folding and unfolding mechanisms that enable height adjustment. These dynamic structures allow precise tactile expression by changing vertical position while using relatively simple mechanical designs rather than complex actuation systems.
Solution Approach 2:
The devices change their vertical position parameter through folding and unfolding actions. This parameter change enables precise tactile feedback without requiring complex multi-degree-of-freedom mechanisms, as the primary adjustment is along a single vertical axis.
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 apparatus achieves precise tactile sensation expression while minimizing image distortion, allowing for realistic tactile feedback without compromising image quality.
Implementation Method 1
at least one lens mounted on the light-emitting device regions, wherein the plurality of tactile transfer devices are arranged not to block light from the light-emitting device in a state in which the plurality of tactile transfer devices are controlled to a maximum height
Data Source
AI summary
A tactile display apparatus includes a display substrate with a plurality of pixels, each having a light-emitting device region with at least one light-emitting device operating based on image information; a plurality of tactile transfer devices positioned on the display substrate with adjustable height based on control signals; and at least one lens mounted on the light-emitting device region. The tactile transfer devices are arranged not to block light from the light-emitting device when controlled to maximum height. The tactile transfer devices may have origami structures for height adjustment through folding or unfolding. Optical conditions are satisfied to ensure proper light transmission, with lens positioning based on focal length relationships. The apparatus may include red, green, and blue light-emitting devices with corresponding lenses, and meta lenses based on nanostructures.