Display Panel Protection Layers for UV and IR Blocking
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Solution Overview
Problem
Display panels emit harmful radiant energy, such as infrared and ultraviolet rays, which cause discomfort and damage, and lack protection against external contact, potentially leading to skin burns and device damage.
Innovation Solution
A display panel design featuring a first protection layer with diffuse reflection, a second protection layer with anti-reflection properties, and a transparent layer that absorbs or reflects ultraviolet and infrared rays, while allowing visible light to pass through, along with a method for manufacturing this configuration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a light emitting device (LED) is used to generate light, then visible light is emitted for display purposes, but harmful radiant energy (infrared and ultraviolet rays) is also emitted causing discomfort and damage
Solution Approach 1:
The protection layer is divided into multiple functional layers with different properties: a first protection layer with diffuse reflection, a second protection layer with anti-reflection properties, and a transparent layer containing transparent materials that absorb or reflect specific wavelengths. This segmentation allows each layer to address specific aspects of the radiation problem while maintaining visible light transmission.
Solution Approach 2:
Different regions and layers of the protection structure are given different optical properties tailored to specific functions: diffuse reflection at the first layer to scatter harmful rays, anti-reflection at the second layer to reduce glare while maintaining transmission, and selective absorption/reflection in the transparent layer for specific wavelength blocks. This local quality differentiation enables simultaneous achievement of visible light transmission and harmful radiation blocking.
2Device complexity
If no separate protection layer is provided in the LED light emitting device, then the device structure remains simple, but the light emitting device may be damaged by external contact or cause skin burn
Solution Approach 1:
The protection layer structure serves multiple functions simultaneously: it protects the LED device from external contact and damage, blocks harmful radiant energy (UV and IR rays), prevents skin burn, and maintains display quality by managing light transmission. This multi-functionality resolves the contradiction by making the added structural complexity worthwhile through comprehensive protection and safety benefits.
3Object-affected harmful factors
If a protection layer is added to block harmful rays, then user safety is improved, but the display panel structure becomes more complex
Solution Approach 1:
The protection layer utilizes composite material structures combining different materials with complementary properties: materials with diffuse reflection characteristics, anti-reflection coatings, and transparent materials with selective absorption and reflection properties. This composite approach enables comprehensive radiation blocking while maintaining optical performance, justifying the increased structural complexity through superior protective functionality.
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 blocks ultraviolet and infrared rays, protecting users from radiation and the light emitting device from external contact, while managing heat distribution to prevent burns and maintain display quality.
Implementation Method 1
a first protection layer which is disposed on an upper portion of the light emitting device, and surface is treated with diffuse reflection
Implementation Method 2
a second protection layer which is disposed on an upper portion of the first protection layer, and surface is treated with at least one of diffuse reflection or anti-reflection
Implementation Method 3
a transparent layer which includes transparent materials that transmit visible rays, and absorb or reflect ultraviolet rays and infrared rays
Implementation Method 4
a transparent layer which includes transparent materials that transmit visible rays, and absorb or reflect ultraviolet rays and infrared rays
Data Source
AI summary
Disclosed is a display panel. The display panel comprises: a light-emitting device; a first protection layer disposed on the light-emitting device and having an anti-glare-treated surface; a second protection layer disposed on the first protection layer and having a surface having been subjected to at least one of an anti-glare treating and an anti-reflection treating; and a transparent layer containing a transparent material that allows visible lights to penetrate there through and absorbs or reflects ultraviolet rays and infrared rays.