Touch-Sensing LED Array for Integrated Input and Light Output
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Solution Overview
Problem
Existing LED systems require separate input and output devices, lacking an integrated solution for simultaneous input and output capabilities.
Innovation Solution
An integrated LED switch device and array that incorporates touch sensor functionality directly into the LED structure, allowing for direct user interaction with visual outputs through capacitive touch sensing, enabling both input and output operations on a single platform.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If conventional light sources (incandescent bulbs, fluorescent tubes) are used, then they provide sufficient illumination, but they generate excessive heat and consume high energy
Solution Approach 1:
The patent changes the fundamental operating parameters of light sources by using LEDs that operate at lower voltages and currents, converting electrical energy directly to light through electroluminescence rather than heating filaments or gas discharge, thereby reducing both energy consumption and heat generation
Solution Approach 2:
The patent replaces mechanical/thermal light generation systems (incandescent filaments, fluorescent gas discharge) with solid-state electroluminescent diodes, eliminating the need for heating elements and reducing energy loss to heat
2Volume of moving object
If LED modules are made smaller and more compact, then device size is reduced, but heat dissipation becomes more difficult
Solution Approach 1:
The patent nests the LED module within a compact housing that integrates the heat sink structure, allowing the heat dissipation system to be embedded within the device volume rather than requiring external space, thus achieving small size while maintaining effective heat dissipation
Solution Approach 2:
The patent introduces a thermally conductive interface material and integrated heat sink as intermediary structures between the LED chips and the external environment, facilitating efficient heat transfer from the compact LED module to the surrounding air
3Use of energy by moving object
If multiple LED modules are connected in series to increase voltage, then power consumption is reduced, but the system becomes more sensitive to voltage fluctuations and individual module failures
Solution Approach 1:
The patent segments the lighting system into multiple independent LED modules that can be connected in parallel, allowing each module to operate independently at lower voltages while maintaining overall system power consumption through increased current capacity, thereby improving reliability through modular independence
Solution Approach 2:
The patent designs universal LED modules with standardized electrical and mechanical interfaces that can be configured in various series or parallel arrangements, allowing the same module design to serve multiple voltage and power requirements while maintaining system reliability through interchangeability
4Ease of repair
If LED modules are designed to be modular and interchangeable, then ease of replacement is improved, but connection reliability and contact stability may be compromised
Solution Approach 1:
The patent merges the electrical connection contacts with the mechanical mounting structure into an integrated connector system, where the same components that secure the module mechanically also establish electrical contacts, ensuring that proper mechanical attachment automatically guarantees reliable electrical connection
Solution Approach 2:
The patent employs spring-loaded or elastic contact elements in the connector that provide continuous mechanical pressure to maintain stable electrical contact, compensating for any dimensional variations or wear that might occur during repeated insertion and removal cycles
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 seamless integration of input and output functions, enhancing user interaction and reducing the need for separate input devices, while maintaining the versatility of LED applications across various fields.
Implementation Method 1
Light emitting diodes have replaced conventional light sources, such as incandescent bulbs and fluorescent tubes, because they consume less energy and last longer
Implementation Method 2
Light emitting diodes have replaced conventional light sources
Data Source
Figure 1~2
Figure 3A~4B
Figure 5A~5C
AI summary
An LED switch device and a matrix thereof are disclosed. There is an electroluminescent semiconductor element with a first polarity contact and a second polarity contact. There is also a first polarity LED lead frame, to which the electroluminescent semiconductor element is mounted. The first polarity contact of the electroluminescent semiconductor element is electrically connected to the first polarity LED lead frame. The LED switch device has a second polarity LED lead frame electrically connected to the second polarity contact of the electroluminescent semiconductor element. The LED switch device also has a touch sensor lead frame that is electrically connected to a touch sensor lead.