Light-emitting Device with Dual Stimulation Reaction Layers
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Solution Overview
Problem
Conventional light-emitting devices require additional equipment to measure stimulation intensity and cannot specifically identify multiple types of stimuli simultaneously.
Innovation Solution
A light-emitting device with an electrode unit, first and second stimulation units, and electroluminescence phosphor particles in a polymer matrix layer, capable of detecting pressure and temperature changes without external equipment, using AC electrical signals and separate reaction layers to visualize different stimuli.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional display technology is used to observe changes in luminance intensity, then luminance changes can be detected, but additional equipment is required to measure luminance intensity
Solution Approach 1:
The patent combines the display function and measurement function into a single device. The light-emitting device displays stimuli through luminance changes while simultaneously serving as the measurement tool, eliminating the need for separate measurement equipment. The stimulation reaction layer directly converts physical stimuli into visible luminance variations that can be observed without external instruments.
Solution Approach 2:
The light-emitting device performs self-measurement by generating visible luminance changes in response to stimuli. The device serves itself as both the test object and the measurement instrument, detecting stimuli through its own luminance responses without requiring external measurement systems.
2Adaptability or versatility
If conventional display technology detects various stimuli from a single device, then multiple stimuli can be sensed, but it is not possible to specifically identify what kind of stimulation
Solution Approach 1:
The patent divides the stimulation detection into separate functional layers, each responsive to specific types of stimuli. The first stimulation reaction layer detects one type of stimulus while the second stimulation reaction layer detects another type, allowing the system to identify specific stimulus types rather than just detecting that some stimulus occurred.
Solution Approach 2:
Different regions or layers of the device have specialized properties for detecting specific stimulus types. Each stimulation reaction layer is designed with local characteristics that make it selectively responsive to particular stimuli, enabling the system to distinguish between different kinds of stimulations based on which layer responds.
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 direct visualization of stimulation types and intensities within a visible light wavelength band without additional measurement devices, allowing for continuous detection of multiple stimuli independently.
Implementation Method 1
the first and second stimulation reaction layers include electroluminescence phosphor particles that express different colors
Implementation Method 2
the first stimulation is pressure, the first stimulation reaction layer senses the intensity of the pressure
Implementation Method 3
the second stimulation is temperature, and the second stimulation reaction layer senses the resistance change according to the temperature change
Data Source
AI summary
A light-emitting device according to the present invention comprises, an electrode unit including a first electrode and a second electrode spaced apart from each other, with electrical signals having different polarity applying the first and second electrode, respectively; a first stimulation unit disposed on one surface of the electrode unit and having a first stimulation reaction layer expressing variable luminance according to a first stimulation; and a second stimulation unit disposed on the other surface facing the one surface of the electrode unit, and having a second stimulation reaction layer expressing a variable luminance according to a second stimulation different from the first stimulation.