Micro-LED Display Module With Infrared Temperature Feedback
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Solution Overview
Problem
The luminous efficiency of Micro-LED display devices is significantly affected by temperature, leading to inaccurate compensation and reduced performance due to signal distortion in conventional temperature sensing methods.
Innovation Solution
A display module with a radiation component that radiates heat as a radiation signal, detected by a detection unit, eliminating signal distortion through wireless transmission and using a light absorbing film to isolate interfering infrared rays, thereby improving temperature detection accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional temperature sensing methods are used, then temperature detection is implemented, but signal distortion occurs leading to inaccurate temperature detection
Solution Approach 1:
The patent replaces conventional wired temperature sensing with infrared radiation detection. The light emitting device itself acts as a temperature sensor by emitting infrared radiation proportional to its temperature, eliminating the need for separate temperature sensors and wired connections that cause signal distortion. This substitution of mechanical/electrical sensing with optical detection resolves the signal distortion problem while maintaining temperature detection capability.
Solution Approach 2:
The patent introduces a light absorbing film as an intermediary between the light emitting device and the detection unit. This film selectively absorbs infrared radiation emitted by the light emitting device while blocking other wavelengths, serving as a spectral filter that isolates the temperature-related thermal radiation signal from other electromagnetic interference, thereby improving temperature detection accuracy.
2Illumination intensity
If Micro-LED operates at high brightness, then display performance is improved, but temperature increases affecting luminous efficiency
Solution Approach 1:
The patent implements a feedback mechanism where the detection unit continuously monitors the infrared radiation emitted by the light emitting device, determining its real-time temperature. This temperature information is fed back to the control system, which adjusts the driving current or operating parameters of the light emitting device to maintain optimal luminous efficiency and prevent excessive temperature rise, thus resolving the contradiction between high brightness operation and temperature control.
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
Accurate temperature detection and compensation of Micro-LED devices, enhancing display quality and user experience by minimizing signal interference and ensuring uniform luminance across different regions.
Implementation Method 1
the radiation component being configured to radiate heat of the light-emitting device in the form of radiation signal
Implementation Method 2
a detection unit for detecting the radiation signal
Implementation Method 3
using a light absorbing film to isolate interfering infrared rays
Data Source
AI summary
The present application discloses a display module and a display device. The display module comprises a substrate, a light emitting device, a radiation component and a detection unit. The light emitting device is on one side of the substrate, and the radiation component is on one side of the light-emitting device close to the substrate. An orthographic projection of the radiation component on the substrate overlapping at least in part with an orthographic projection of the light-emitting device on the substrate.