Display Panel Refractive Index Gradient for Black Performance
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Solution Overview
Problem
Current display panels suffer from visual greening and poor integrated black performance, necessitating a solution that reduces reflectivity and improves black color consistency.
Innovation Solution
Incorporating a first structure layer with a refractive index between that of the substrate structure and the second structure layer, positioned between them, to reduce reflectivity and enhance integrated black performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional display panel structure is used, then the manufacturing process is simple, but visual greening occurs and integrated black performance is poor
Solution Approach 1:
The substrate structure is segmented into multiple functional layers: first substrate, first sub-gate insulation layer, first structure layer, second sub-gate insulation layer, and second substrate. Each layer is designed with specific refractive index properties to control light propagation and reduce reflectivity, thereby improving integrated black performance without excessive complexity
Solution Approach 2:
The refractive indices of the structure layers are carefully selected and optimized. The first structure layer has a refractive index between that of the first sub-gate insulation layer and the second sub-gate insulation layer, creating a gradient that reduces optical reflection and improves black color consistency across the display panel
2Reliability
If reflectivity is reduced to improve integrated black performance, then chromatic aberration decreases, but manufacturing precision requirements increase
Solution Approach 1:
Instead of requiring extremely precise control of single-layer properties, the patent uses a multi-layer structure where each layer has moderately controlled refractive indices. The first structure layer's refractive index is positioned between the two sub-gate insulation layers, creating a gradient that naturally reduces reflectivity and chromatic aberration through cumulative optical effects
Solution Approach 2:
The patent employs a composite substrate structure combining multiple materials with different refractive indices. This composite approach allows for tailored optical properties where the combined effect of multiple layers achieves superior black performance while distributing manufacturing tolerance requirements across multiple layers rather than demanding extreme precision in a single layer
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 implementation effectively reduces visual greening by minimizing reflectivity and improves integrated black performance by reducing chromatic aberration between light-transmitting and light-shielding areas.
Implementation Method 1
a refractive index of the first structure layer is between a refractive index of the first sub-gate insulation layer and a refractive index of the second sub-gate insulation layer
Data Source
AI summary
A display panel and a method for forming a display panel and a display device are provided. The display panel includes a plurality of pixels, a pixel of the plurality of pixels including a light-transmitting area; a substrate structure, including a first substrate; a first sub-gate insulation layer, located on a side of the first substrate close to a light-emitting surface of the display panel; a second sub-gate insulation layer, located on a side of the first sub-gate insulation layer close to the light-emitting surface of the display panel; and a first structure layer, located between the first sub-gate insulation layer and the second sub-gate insulation layer, where a refractive index of the first structure layer is between a refractive index of the first sub-gate insulation layer and a refractive index of the second sub-gate insulation layer.