Infrared Cutoff Layer for Display Panel Water Ripple Flicker
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Solution Overview
Problem
Infrared light sources adjacent to organic electroluminescence display panels in mobile devices cause water ripples to flicker, affecting display quality due to reflection, refraction, and scattering of infrared light.
Innovation Solution
An infrared cutoff layer is attached to the side and back surfaces of the display panel, covering the overlapping region and an extension region adjacent to the infrared light source, effectively absorbing most of the infrared light emitted, thereby preventing its impact on the display panel.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the infrared light source is disposed adjacent to the display panel, then the infrared ranging function is achieved, but the display quality deteriorates due to water ripple flicker
Solution Approach 1:
An infrared cutoff layer is introduced as an intermediary component between the infrared light source and the display panel. This layer selectively blocks infrared light while allowing visible light to pass through, preventing the harmful infrared radiation from causing water ripple flicker on the display panel while maintaining the infrared ranging functionality.
Solution Approach 2:
The harmful infrared radiation is extracted and blocked from reaching the display panel by using the infrared cutoff layer. This layer specifically removes the infrared component from the light path while preserving the visible light needed for display, thus separating the useful infrared function from the harmful infrared radiation.
2Object-affected harmful factors
If the infrared cutoff layer is added to block infrared light, then the display quality is improved, but the device complexity increases
Solution Approach 1:
The infrared cutoff layer is implemented as a thin film or flexible coating applied to the display panel surface. This approach adds minimal structural complexity while effectively blocking infrared light. The thin film nature allows it to be integrated into existing display structures without requiring substantial additional components or complex assembly processes.
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 solution significantly improves display quality by reducing the impact of infrared light on the display panel, ensuring better performance and image stability.
Implementation Method 1
effectively absorbing most of the infrared light emitted
Implementation Method 2
reflection, refraction, and scattering of infrared light
Implementation Method 3
reflection, refraction, and scattering of infrared light
Implementation Method 4
reflection, refraction, and scattering of infrared light
Data Source
AI summary
The disclosure provides an electronic device, including a display panel, an infrared light source, and an infrared cutoff layer. The display panel includes a display surface, a back surface opposite to the display surface, and a side surface connecting the display surface and the back surface. The infrared light source is disposed adjacent to the side surface of the display panel and is configured to emit infrared light. The display panel includes an overlapping region in which the infrared light source overlaps with the side surface as viewed from a side view. The infrared cutoff layer is attached to the side surface and the back surface of the display panel, and covers at least the overlapping region and an extension region in which the overlapping region extends respectively in a transverse direction and toward the back surface by a preset distance.