Display Panel Air-Filled Opening for Light Control
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Solution Overview
Problem
Display panels face challenges in light output efficiency due to uncontrolled light leakage between the light control layer and adjacent layers, which affects the overall color implementation and brightness.
Innovation Solution
The display panel design includes a first substrate with a pixel area, a color filter layer, a light control layer, and a first opening between the color filter layer and the light control layer, filled with air, to optimize light refraction and minimize light loss.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the color filter layer and light control layer are disposed in direct contact, then the manufacturing process is simpler, but light output efficiency deteriorates due to uncontrolled light leakage
Solution Approach 1:
The patent introduces a first opening that segments the interface between the color filter layer and light control layer, creating a discontinuous structure. This segmentation prevents uncontrolled light leakage while maintaining manufacturing simplicity by using a straightforward opening formation process.
Solution Approach 2:
The first opening acts as an intermediary structure between the color filter layer and light control layer. By introducing this intermediate element filled with air, the patent controls light propagation and prevents direct contact between the layers, thereby improving light output efficiency without significantly complicating the manufacturing process.
2Loss of energy
If a first opening is introduced between the color filter layer and light control layer, then light output efficiency is improved through better light control, but device complexity increases
Solution Approach 1:
The first opening segments the layer structure, creating discrete regions for light control. This segmentation approach improves light output efficiency by preventing light leakage while adding minimal structural complexity, as the opening follows the pixel pattern already present in display panels.
Solution Approach 2:
The first opening is strategically positioned only in specific regions where light control is needed, rather than uniformly across the entire panel. This localized approach improves light output efficiency where required while minimizing overall device complexity by leaving other regions unchanged.
3Loss of energy
If the first opening is filled with air having low refractive index, then light refraction is optimized and light output efficiency improves, but manufacturing precision requirements increase
Solution Approach 1:
The first opening is designed to be self-forming through the existing manufacturing process steps, utilizing the pixel definition layers already present in the display panel. This self-service approach allows air to naturally fill the opening without requiring additional precision in opening formation, as the boundaries are defined by the pixel structure itself.
Solution Approach 2:
The patent utilizes the natural refractive index difference between air and the surrounding layers to achieve light control. By changing the filling material parameter to air (with its inherent low refractive index), the patent optimizes light refraction and output efficiency without requiring precise control over the opening dimensions, as the refractive effect occurs at the interface regardless of exact geometry.
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 enhances light output efficiency by ensuring that light is effectively directed and controlled, resulting in improved color accuracy and brightness compared to traditional designs.
Implementation Method 1
Air may be disposed in the first opening. A refractive index inside the first opening may be about 1 to about 1.1. a refractive index inside the first opening may be lower than a refractive index of the light control layer and a refractive index of the color filter layer.
Data Source
AI summary
A display panel comprises a first substrate including a pixel area defined, and a second substrate disposed under the first substrate and including a light emitting element that emits first light to the first substrate. The first substrate includes a base layer, a color filter layer disposed under the base layer and disposed in the pixel area, a light control layer disposed under the color filter layer, and a first opening between the color filter layer and the light control layer.