Display Device Side Visibility via Polarizing Layer Segmentation
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Solution Overview
Problem
Liquid crystal display (LCD) devices face challenges in improving side visibility due to limitations in light management and color filtering technologies, which affect the overall display quality and user experience.
Innovation Solution
The implementation of a display device configuration that includes a first and second substrate with a first polarizing layer featuring line grid patterns, a light scattering layer, and color filter layers strategically positioned to enhance side visibility by scattering light and managing color transmission effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a conventional LCD structure is used, then the device achieves basic display function, but side visibility is poor
Solution Approach 1:
The polarizing layer is segmented into a first polarizing layer and a second polarizing layer with different orientations. The first polarizing layer has a first transmission axis and the second polarizing layer has a second transmission axis that is not parallel to the first, creating distinct polarization zones that improve light control from different viewing angles, thereby enhancing side visibility without requiring a completely new structure
Solution Approach 2:
A compensation film is introduced as an intermediary element between the polarizing layers and the liquid crystal layer. This compensation film has specific optical compensation properties that adjust the polarization state of light passing through the liquid crystal layer, enabling better control of light transmission from side viewing angles while maintaining the existing LCD structure
2Adaptability or versatility
If light scattering layer is added to improve side visibility, then side viewing angle increases, but front luminance may decrease
Solution Approach 1:
Different regions of the display structure are assigned different optical properties. The first and second polarizing layers are positioned and oriented differently to handle light from different directions - the first polarizing layer optimizes for front viewing while the second polarizing layer and compensation film work together to optimize for side viewing angles, allowing each region to specialize in its function without compromising overall performance
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 significantly improves side visibility by scattering light and controlling color transmission, leading to enhanced display quality and user experience while maintaining front luminance and contrast ratio.
Implementation Method 1
a light scattering layer disposed between the first polarizing layer and the second substrate
Implementation Method 2
a first polarizing layer disposed between the first substrate and the second substrate and including first line grid patterns
Implementation Method 3
color filter layers disposed between the light scattering layer and the second substrate
Data Source
AI summary
A display device is provided. The display device comprises a first substrate, a second substrate facing the first substrate, a first polarizing layer disposed between the first substrate and the second substrate and including first line grid patterns, a light scattering layer disposed between the first polarizing layer and the second substrate, and color filter layers disposed between the light scattering layer and the second substrate.