Amorphous Boron Nitride Anti-Reflection Coating for Low Reflectivity
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Solution Overview
Problem
Display devices such as LCDs and OLEDs face issues with contrast decrease and image overlap due to external light reflection, requiring effective anti-reflection solutions.
Innovation Solution
An amorphous boron nitride film with a specific structure and properties, including a low refractive index, high density, and a combination of sp3 and sp2 hybrid bonds, is used as an anti-reflection coating to reduce reflectivity and improve image clarity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a conventional anti-reflection film is applied to display devices, then light reflection is reduced, but the film may exhibit high dielectric constant and poor mechanical stability
Solution Approach 1:
The patent changes the chemical composition parameters of the anti-reflection film by incorporating boron nitride with specific sp3/sp2 hybrid bond ratios and controlling hydrogen content, thereby achieving both low dielectric constant and high mechanical stability simultaneously
Solution Approach 2:
The patent creates a composite amorphous boron nitride film with specific hybrid bond structures that combines the low dielectric constant property with high mechanical strength, overcoming the limitations of conventional single-material anti-reflection coatings
2Object-affected harmful factors
If the refractive index of the anti-reflection film is reduced to minimize light reflection, then image clarity improves, but the film density and mechanical strength may deteriorate
Solution Approach 1:
The patent optimizes the refractive index parameter to a specific range (1.3-1.6) while simultaneously adjusting the sp3 hybrid bond ratio and hydrogen content to maintain high mechanical strength, achieving a balance between optical performance and mechanical properties
3Use of energy by moving object
If the dielectric constant of the anti-reflection film is reduced to improve electrical performance, then signal interference decreases, but the film may become more susceptible to mechanical damage
Solution Approach 1:
The patent develops a composite amorphous boron nitride structure that achieves low dielectric constant (2.5 or less) while maintaining high mechanical durability through specific hybrid bond configurations and controlled hydrogen content, eliminating the trade-off between electrical and mechanical performance
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 amorphous boron nitride film effectively reduces reflectivity and enhances image quality by minimizing light interference, offering excellent thermal, mechanical, and chemical stability for various devices including image sensors, solar cells, and display panels.
Implementation Method 1
a problem of contrast decrease or image overlap may occur due to the reflection of external light
Implementation Method 2
the refractive index of the amorphous boron nitride film with respect to light in a wavelength range of about 100 nm to about 1000 nm may be about 1.0 to about 1.5
Data Source
AI summary
Provided are an amorphous boron nitride film and an anti-reflection coating structure including the amorphous boron nitride film. The amorphous boron nitride film has an amorphous structure including an sp3 hybrid bond and an sp2 hybrid bond, in which a ratio of the sp3 hybrid bond in the amorphous boron nitride film is less than about 20%.