Thermosensitive Braille Dot Matrix Panel for Reusable Tactile Display
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Solution Overview
Problem
Traditional Braille information display devices have complex mechanical structures and are cumbersome, making it difficult to achieve precise control of Braille dots, and they are not reusable, leading to resource waste.
Innovation Solution
A display panel with a matrix arrangement of scan lines, data lines, and display circuits, using thermosensitive layers and thin film transistors to independently control dot elements, allowing for precise protrusion of Braille dots based on electrical signals, and a display device that recognizes input information to generate drive signals for the panel.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional mechanical control mode (piezoelectric patches) is used to display Braille information, then the Braille dots can be controlled, but the structure becomes complicated and the control process becomes cumbersome
Solution Approach 1:
The patent replaces the traditional mechanical piezoelectric control system with a thermal field-based control system. Instead of using piezoelectric patches that require complex mechanical structures and multi-step control processes, the invention uses a thermosensitive layer that responds directly to electrical signals through thermal effects, significantly simplifying both the device structure and control process while maintaining precise control capability
Solution Approach 2:
The patent changes the control parameter from mechanical/electrical direct coupling (piezoelectric) to thermal response (thermosensitive material phase change). By utilizing the phase transition temperature characteristics of thermosensitive materials, the system achieves precise control of Braille dot protrusion through temperature control, which is more easily achieved through simple electrical heating elements
2Ease of operation
If traditional protruded dots on paper are used for Braille information, then blind people can touch and read the information, but the paper cannot be reused causing resource waste
Solution Approach 1:
The patent transforms the static, disposable paper Braille dots into a dynamic, reusable electronic display system. The Braille dots can be dynamically controlled to protrude or retract based on electrical signals, allowing the same display device to repeatedly present different Braille information without consumable materials, thereby eliminating resource waste while maintaining tactile readability
Solution Approach 2:
The patent creates a reusable electronic copy of the traditional paper Braille system. Instead of physically embossing dots on paper that cannot be reused, the invention uses a display panel with controllable dot elements that replicate the tactile Braille experience electronically, allowing infinite reuse and reconfiguration of the same physical device
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
Enables accurate and efficient display of Braille information with reduced area occupation, allowing for more characters per unit area and easier handling, while being reusable, thus addressing the complexity and waste issues of traditional methods.
Implementation Method 1
the thermosensitive layer is configured to be heated by the electrode to protrude the dot key
Data Source
AI summary
The embodiments of the present disclosure provide a display panel, a display device, and a method for displaying Braille information. The display panel includes a plurality of scan lines, data lines, and display circuits arranged at intersections of the plurality of scan lines and the plurality of data lines. The display circuit includes a switch configured to be turned on or off according to a scan signal from the scan line, and a dot element coupled to the switch. The dot element includes a substrate, an electrode provided on the substrate, a thermosensitive layer provided on the electrode, and a dot key arranged on the thermosensitive layer. The electrode is coupled to the switch, and configured to be applied with a data signal from the data line when the switch is turned on. The thermosensitive layer is configured to be heated by the electrode to protrude the dot.