Optical Film with Arcuate Microstructures for Display Brightness
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Solution Overview
Problem
Traditional display modules are complex and costly, with limited optical performance, especially in high brightness and large viewing angle applications, due to the challenges in manufacturing microstructures and achieving optimal light path control.
Innovation Solution
An optical film design incorporating protruding arcuate microstructures and an opaque layer with strategically positioned apertures, where the microstructures and apertures have specific proportional relationships and arrangements, to produce collimated light and improve brightness uniformity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If traditional display modules use multiple optical components (diffuser plates, light guide plates, reflector plates), then brightness uniformity can be achieved, but device complexity and manufacturing cost increase
Solution Approach 1:
The patent combines multiple optical functions (diffusion, light guidance, reflection) into a single optical film with integrated microstructures. The film includes diffuser microstructures, light guide channels, and reflective elements all in one component, replacing traditional separate diffuser plates, light guide plates, and reflector plates, thereby reducing device complexity while maintaining brightness uniformity
Solution Approach 2:
The optical film is designed to perform multiple functions simultaneously: it diffuses light, guides light, reflects light, and controls light distribution. This multi-functional design eliminates the need for separate specialized components for each function, reducing overall device complexity while achieving uniform brightness
2Illumination intensity
If microstructure technology is used to control light path, then brightness uniformity improves, but manufacturing precision requirements and cost increase
Solution Approach 1:
The patent optimizes key parameters of the microstructures including size (50-200 micrometers), shape (arcuate), and spacing to achieve effective light control. By carefully selecting these parameters, the design achieves good optical performance while remaining compatible with standard manufacturing capabilities, reducing the precision requirements compared to more complex microstructure designs
3Ease of operation
If existing microstructure designs are used, then light path control is improved, but optical performance is limited in high brightness and large viewing angle applications
Solution Approach 1:
The patent employs arcuate (curved) microstructures instead of flat or angular ones. These curved microstructures effectively redirect and distribute light rays, improving light path control while maintaining performance in high brightness and large viewing angle applications. The curvature enables better light scattering and directional control
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 optical film effectively controls light distribution, enhancing brightness uniformity and reducing manufacturing complexity and costs, while providing improved optical performance for display modules, including privacy protection and better image quality in various applications.
Implementation Method 1
The microstructures are protruding arcuate structures... achieving the purpose of controlling the light path
Implementation Method 2
An opaque layer is affixed to the main body... the opaque layer includes multiple apertures
Data Source
AI summary
An optical film, display module, and display screen, wherein the optical film comprises a main body, multiple microstructures, and an opaque layer. The microstructures are positioned on one side of the main body, and these microstructures are protruding arcuate structures. The opaque layer is affixed to the main body and is set opposite the microstructures on the other side of the main body, the opaque layer includes multiple apertures. Wherein, the center point of the apertures overlaps with the center point of the microstructures on a projection plane. Wherein, the equivalent diameter of the apertures divided by the equivalent diameter of the microstructures is less than or equal to 0.3, the equivalent diameter of the microstructures divided by the thickness of the main body is less than or equal to 1.3, and greater than or equal to 0.7. Wherein, the opaque layer is oriented towards the light source. The beneficial effect is that it can produce better collimated light, further improving the performance of the display module.