Display Device Light Conversion Layers Lenses Spacers
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Solution Overview
Problem
Current display devices face challenges in achieving optimal light efficiency due to limitations in the arrangement and functionality of light conversion layers and light transmission layers, which affect color purity and light distribution.
Innovation Solution
The proposed display device incorporates a specific arrangement of light conversion layers, a light transmission layer, bank layers, spacers, and lenses on a display panel, where the lenses and spacers are formed in the same layer to refract light efficiently, enhancing light-emitting efficiency and color purity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If light conversion layers and light transmission layer are disposed directly on pixels without additional structures, then device complexity is reduced, but light efficiency and color purity deteriorate
Solution Approach 1:
The patent divides the light management function into multiple components: bank layers that separate light paths, lenses that focus light, and spacers that maintain optical path distance. This segmentation allows each component to optimize light efficiency independently while maintaining overall structural organization.
Solution Approach 2:
The patent introduces bank layers as intermediary structures between the pixels and light conversion layers. These bank layers act as mediators that guide and organize light paths, improving light efficiency and color purity without requiring direct contact between all components.
2Area of stationary object
If light conversion layers and light transmission layer are arranged closely without spacing, then area is reduced, but color purity and light distribution deteriorate
Solution Approach 1:
The patent utilizes the vertical dimension by stacking light conversion layers and light transmission layers at different heights, separated by spacers. This dimensional arrangement allows close packing in the planar area while maintaining vertical separation for optimal optical performance and color purity.
Solution Approach 2:
The patent applies different properties to different regions: spacers provide localized spacing in critical areas to maintain color purity, while bank layers provide localized light guidance. This local differentiation allows area optimization without sacrificing overall color purity.
3Manufacturing precision
If multiple light conversion layers and light transmission layer are added to improve color purity, then device complexity increases, but manufacturing precision requirements worsen
Solution Approach 1:
The patent designs bank layers and spacers as multi-functional components that simultaneously perform spacing, light guidance, and structural support functions. This universality reduces the need for separate dedicated components, thereby managing device complexity while achieving precise color purity through multiple light conversion layers.
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 improves light-emitting efficiency by refracting light effectively and maintaining color purity, resulting in enhanced display performance with improved light distribution and viewing angles.
Implementation Method 1
a plurality of lenses which are disposed below the first light conversion layer, the second light conversion layer, and the light transmission layer, and face the display panel
Data Source
AI summary
A display device includes a display panel, a first light conversion layer, a second light conversion layer, and a light transmission layer, which are disposed on the display panel and spaced apart from each other, a plurality of bank layers, each of which is disposed on the display panel and which are disposed between the first light conversion layer and the second light conversion layer and between the light transmission layer and each of the first and second light conversion layers, a spacer, which is disposed below a bank layer of the bank layers and faces the display panel, and a plurality of lenses which are disposed below the first light conversion layer, the second light conversion layer, and the light transmission layer, and face the display panel. The spacer and the plurality of lenses may be disposed in a same layer.