Optical Component Angle Design for Display Light Efficiency
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Solution Overview
Problem
Current display devices with active light-emitting technologies, such as Mini LED, suffer from low external luminance efficiency due to light reflection and absorption, resulting in only 10% or less of emitted light reaching the receiver, and exhibit high reflectivity issues that affect visibility.
Innovation Solution
A display device design featuring a substrate with a light source array and optical components, where each optical component has a light receiving surface and a light emitting surface connected by a side surface forming an included angle between 100 to 130 degrees, enhancing light transmission and reducing reflectivity through the use of a high-transmittance material and an optical adhesive layer with specific refractive indices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If traditional light-emitting structures are used, then the device structure is simple, but the external luminance efficiency is low (only 10% or less of light reaches the receiver)
Solution Approach 1:
The patent introduces an optical component as an intermediary element between the light source and the display panel. This optical component includes a light receiving surface, a light emitting surface, and side surfaces that guide light transmission. The intermediary structure redirects light that would otherwise be reflected or absorbed, channeling it effectively to the display panel and improving external luminance efficiency without significantly complicating the manufacturing process.
Solution Approach 2:
The patent optimizes the geometric parameters of the optical component, specifically the included angles between side surfaces and the light receiving surface (set between 45-60 degrees). By changing these angular parameters, the light transmission efficiency is improved, allowing more light to reach the display panel while maintaining a relatively simple device structure.
2Object-generated harmful factors
If multiple layers of metals are overlapped to increase reflectivity, then the reflectivity increases, but the visibility deteriorates
Solution Approach 1:
The patent converts the harmful effect of light reflection (which causes visibility problems) into a beneficial effect. The optical component is designed to capture reflected light through its side surfaces and redirect it toward the display panel. This transforms what was previously waste light (reflection loss) into useful light that enhances display visibility and luminance efficiency.
3Illumination intensity
If light is reflected by the surface and absorbed by the material, then the light emission is intense, but the light reaching the receiver is low (10% or less)
Solution Approach 1:
The patent addresses light loss by introducing a three-dimensional optical component structure with multiple surfaces (light receiving surface, light emitting surface, and side surfaces). This dimensional approach allows light to be captured, guided, and redirected through spatial pathways, transforming the two-dimensional light emission problem into a three-dimensional light management solution that improves transmission efficiency.
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
This configuration increases light output by 37% to 70% compared to traditional designs, significantly enhancing luminance efficiency and reducing reflection, thereby improving display quality.
Implementation Method 1
The optical component has a light receiving surface and a light emitting surface, and the light receiving surface is connected to the light source luminous surface
Implementation Method 2
decrease light loss issues such as light reflection or refraction
Data Source
AI summary
A display device including a substrate and a light source array disposed on the substrate is provide. The light source array includes a plurality of light-emitting units disposed on the substrate, and each light-emitting unit has a light source and an optical component. Each light source is disposed on the substrate and has a light emitting surface. Each optical component has a light receiving surface and a light exit surface, and each optical component is disposed on the light source with the light receiving surface connected to the light emitting surface. The optical component also has a side surface connecting the light receiving surface and the light exit surface. The side surface and the light receiving surface have an included angle between 100 and 130 degrees within the optical component.