Brightness Enhancement Film with Convex-Concave Diffusion Layer
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Solution Overview
Problem
Conventional brightness enhancement films for LCDs suffer from poor light uniformity due to a lack of effective diffusion and condensation on both surfaces, leading to increased manufacturing costs and complexity when using additional diffusion films.
Innovation Solution
A brightness enhancement film with a convex-concave structure on one side, incorporating a coating layer with organic particles and a bonding agent, which diffuses and then condenses light uniformly, enhancing luminance while maintaining the functionality of a conventional brightness enhancement film.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a conventional brightness enhancement film with a condensing prism structure on only one surface is used, then the film structure is simple, but the light uniformity is poor due to ineffective diffusion and condensation
Solution Approach 1:
The patent combines the diffusion function and condensing function into a single brightness enhancement film by integrating a convex-concave diffusion structure with a prism condensing structure on the same film substrate, eliminating the need for separate diffusion and condensing films while achieving uniform light distribution
Solution Approach 2:
The brightness enhancement film performs multiple functions simultaneously: it diffuses incident light through the convex-concave structure on its first surface, condenses light through the prism structure on its second surface, and directs light at specific angles, making a single film component serve what previously required multiple separate components
2Manufacturing precision
If a diffusion film is placed under the brightness enhancement film to improve light uniformity, then the light uniformity is improved, but the manufacturing cost increases and the backlight module becomes more complex
Solution Approach 1:
The patent merges the functions of separate diffusion film and brightness enhancement film into a single integrated film structure, where the first surface provides diffusion through convex-concave structures and the second surface provides condensation through prism structures, eliminating the need for multiple separate film layers
Solution Approach 2:
The integrated brightness enhancement film serves as both a diffusion element and a condensing element simultaneously, performing the work of what would traditionally require separate diffusion film and brightness enhancement film components, thereby simplifying the overall backlight module structure
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 film achieves improved light uniformity by diffusing and condensing light uniformly, eliminating bright and dark stripes, thus enhancing display luminance without increasing manufacturing complexity or energy consumption.
Implementation Method 1
a light diffusion layer having a convex-concave structure on one side of the substrate
Implementation Method 2
The main function of the brightness enhancement film is to collect the disordered light emitted from a light guide to various directions by refraction and total internal reflection
Implementation Method 3
The main function of the brightness enhancement film is to collect the disordered light emitted from a light guide to various directions by refraction and total internal reflection
Data Source
AI summary
A brightness enhancement film is provided, which comprises a substrate with a light diffusion layer having a convex-concave structure on one side of the substrate. The brightness enhancement film of the present invention can be used in liquid crystal displays (LCDs) as a light diffusion brightness enhancement film.