Display Device Optical Structure Layer Anti-Glare
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Solution Overview
Problem
Display devices used outdoors face interference from ambient light, leading to decreased contrast and display quality due to reflected light and inadequate brightness adjustment.
Innovation Solution
A display device equipped with a photodetector, processor, and optical structure layer comprising an anti-glare and anti-reflection layer, which detects ambient light, adjusts image brightness accordingly, and reduces the impact of reflected light.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the display device is used outdoors, then the display device can be used in outdoor environments, but the ambient light from the outside irradiates the display device to generate reflected light, causing a decrease in contrast and display quality
Solution Approach 1:
The patent applies anti-glare and anti-reflection coatings that convert harmful reflected light into beneficial diffuse reflection. The anti-glare layer scatters incident ambient light to reduce glare, while the anti-reflection layer minimizes specular reflection through optical interference. This transforms the harmful reflected light into diffuse, non-distracting light that improves outdoor visibility without sacrificing indoor performance.
Solution Approach 2:
The patent employs a composite optical structure consisting of multiple layers with different optical properties: an anti-glare layer with specific refractive index and roughness, an anti-reflection layer with optimized thickness and composition, and the display panel itself. This multi-layer composite structure works synergistically to reduce reflected light interference while maintaining display quality across different lighting conditions.
2Device complexity
If the brightness of the image of the display device does not change according to the outside ambient light, then the display device structure remains simple, but the display quality of the display device will be reduced
Solution Approach 1:
The patent incorporates ambient light sensors that continuously detect the intensity of surrounding light and provide feedback to the display controller. The controller automatically adjusts the display brightness based on this feedback, ensuring optimal contrast and visibility in varying ambient conditions. This closed-loop feedback system maintains high display quality without requiring complex manual intervention.
Solution Approach 2:
The display device performs self-adjustment of brightness through integrated sensors and control algorithms. The ambient light sensors measure the surrounding illumination levels, and the system automatically modifies its output brightness accordingly, eliminating the need for external control or complex user interaction. This self-service capability simplifies the overall control architecture while maintaining adaptability.
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 effectively improves display quality by minimizing the effect of ambient light, maintaining high contrast, and optimizing image brightness for varying outdoor conditions.
Implementation Method 1
an anti-reflection layer... the reflectivity of specular component included (SCI) of the optical structure layer is between 3% and 6%
Implementation Method 2
The photodetector is electrically connected to the display module and is used for detecting brightness of an ambient light and outputs a sensing signal
Data Source
AI summary
A display device including a display module and an optical structure layer is provided. The display module is used for displaying an image. The optical structure layer is disposed on the display module, and comprises an anti-glare layer and an anti-reflection layer, wherein the anti-reflection layer is disposed on the anti-glare layer. A glossiness of the optical structure layer is between 4 GU and 35 GU, and a reflectivity of specular component included (SCI) of the optical structure layer is between 3% and 6%.