Display Panel Refractive Layers for Brightness and Color Purity
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Solution Overview
Problem
Existing display panels face challenges in achieving improved light efficiency and image quality, particularly in maintaining color purity and reducing color mixing between adjacent pixel areas.
Innovation Solution
The display panel incorporates a design with first, second, and third light emitting elements, color filters, optical patterns, and a refractive layer, along with a partition wall and optical patterns made of base resin and scattering particles, to manage light transmission and conversion efficiently.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a conventional display panel structure is used, then the device complexity is low, but the light emission efficiency and image quality are insufficient
Solution Approach 1:
The display panel is segmented into multiple functional layers including light emitting elements, color filters, optical patterns, and refractive layers. Each layer performs a specific function in light generation, filtering, and optimization, thereby improving light emission efficiency while maintaining manageable complexity through functional decomposition
Solution Approach 2:
Different regions of the display panel are assigned different optical patterns and color filters tailored to specific pixel areas. The refractive layer is selectively positioned between certain color filters and optical patterns to optimize light emission in specific regions, improving overall light efficiency without uniformly increasing complexity across the entire device
2Illumination intensity
If light transmission is increased to improve brightness, then illumination intensity improves, but color mixing between adjacent pixels increases
Solution Approach 1:
Partition walls are introduced as intermediary structures between adjacent pixel areas. These partition walls physically separate the light paths of neighboring pixels, preventing color mixing while allowing each pixel to maintain high brightness. The refractive layer acts as another intermediary that directs light transmission through optical patterns, further enhancing color separation accuracy
Solution Approach 2:
Color filters are selectively applied to different pixel areas with specific spectral transmission characteristics. Each color filter is optimized for its designated region, ensuring accurate color reproduction while preventing adjacent color leakage. This localized optimization maintains high brightness without compromising color separation
3Illumination intensity
If optical patterns are added to each pixel area, then color light output improves, but device complexity increases
Solution Approach 1:
The refractive layer serves multiple functions simultaneously: it enhances light extraction efficiency, directs light transmission through optical patterns, and contributes to color separation. By using a single multi-functional component instead of multiple separate elements, the patent improves color light output while minimizing the increase in device complexity
Solution Approach 2:
The refractive layer is integrated with the color filter structure, combining two optical functions into a single layered component. This merging reduces the total number of discrete optical elements while maintaining the benefits of both color filtering and light direction, thereby improving color light output without proportionally increasing device complexity
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 design enhances light emission efficiency and reduces color mixing, improving display quality by maintaining color purity and wide viewing angles.
Implementation Method 1
a refractive layer between the first color filter and the first optical pattern, between the second color filter and the second optical pattern, and between the third optical pattern and the third light emitting element
Implementation Method 2
each of the partition wall and the third optical pattern may include a base resin and scattering particles mixed with the base resin
Data Source
AI summary
A display panel may include first to third light emitting elements providing source light, first to third color filters, a first optical pattern between a first color filter and the first light emitting element, a second optical pattern between the second color filter and the second light emitting element, a third optical pattern between the third color filter and the third light emitting element, and a refractive layer between the first color filter and the first optical pattern, between the second color filter and the second optical pattern, and between the third optical pattern and the third light emitting element.