Liquid Crystal Panel Polarizer Orthogonal Systems
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Solution Overview
Problem
Liquid crystal panels face limitations in achieving high contrast and wide view angles, which are essential for enhanced displaying performance, particularly in consumer devices like mobile phones and televisions.
Innovation Solution
A liquid crystal panel design featuring sequentially stacked components, including a glass cover plate, a first polarizer with alternating absorption axes, a liquid crystal layer, a second polarizer with orthogonal absorption axes, and a glass bottom plate, where the polarizers are arranged to form orthogonal systems that improve contrast ratio and view angle by alternating absorption axis series and sub-polarization layers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional single-orthogonal-system polarizers are used, then the structure is simple, but the view angle and contrast ratio are limited
Solution Approach 1:
The first polarizer is segmented into multiple absorption axis systems (first, second, third, and fourth orthogonal systems) with different absorption axis orientations. Each system contributes to light absorption from different viewing directions, thereby expanding the overall view angle range and maintaining contrast ratio across wider angles without requiring a completely different polarizer architecture
Solution Approach 2:
The polarizer structure combines multiple absorption axis systems within a single polarizer layer, creating a composite optical structure. This composite approach integrates the light-absorbing properties of different axis orientations to achieve both wide view angle and high contrast ratio simultaneously, resolving the contradiction between performance improvement and structural complexity
2Reliability
If conventional polarizer arrangements are used, then the manufacturing process is simple, but light leakage occurs at oblique angles reducing contrast
Solution Approach 1:
Different regions of the polarizer structure have different absorption axis orientations tailored to specific viewing directions. The first and second orthogonal systems address one set of viewing angles while the third and fourth systems address another set, creating local optical properties optimized for different spatial regions and viewing conditions, thereby eliminating oblique angle light leakage without complicating the overall manufacturing process
Solution Approach 2:
The invention transitions from a single orthogonal system (one-dimensional polarization control) to multiple orthogonal systems with different axis orientations (multi-dimensional polarization control). This dimensional expansion in the polarization space allows simultaneous control of light absorption across multiple viewing angles, maintaining high contrast ratio while preserving manufacturing simplicity through standardized polarizer fabrication processes
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 design significantly enhances the contrast ratio and view angle range, providing improved visual performance by minimizing light leakage at oblique angles while maintaining high contrast at standard viewing angles.
Implementation Method 1
The first polarizer comprises first absorption axes and second absorption axes. The second polarizer comprises third absorption axes and fourth absorption axes. The first absorption axes of the first polarizer and the third absorption axes of the second polarizer have axial directions that are orthogonal to each other and form a first orthogonal system.
Implementation Method 2
The first polarizer comprises first absorption axes and second absorption axes. The second polarizer comprises third absorption axes and fourth absorption axes.
Data Source
AI summary
A liquid crystal panel includes, sequentially stacked, a glass cover plate, a first polarizer, a liquid crystal layer, a second polarizer, and a glass bottom plate. The liquid crystal layer includes a plurality of pixels. Each of the pixels includes a plurality of liquid crystal molecules. The first polarizer includes first absorption axes and second absorption axes. The second polarizer includes third absorption axes and fourth absorption axes. The first absorption axes of the first polarizer and the third absorption axes of the second polarizer have axial directions that are orthogonal to each other and form a first orthogonal system. The second absorption axes of the second polarizer and the fourth absorption axes of the second polarizer have axial directions that are orthogonal to each other and form a second orthogonal system. The first orthogonal system and the second orthogonal system define therebetween an included angle of 45 degrees.