Stereoscopic Display Optical Filter Polarization Modulation
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Solution Overview
Problem
Conventional stereoscopic image display devices face challenges in minimizing crosstalk and achieving wide viewing angles and high contrast ratios, leading to degraded image quality.
Innovation Solution
A stereoscopic image display device is designed with a display element, a first polarizing plate, and an optical filter, where the optical filter includes polarization modulating regions with optical axes in different directions, aligned such that the bisector of the angle between these axes is perpendicular or parallel to the absorption axis of the polarizing plate, optimizing image signal polarization and reducing crosstalk.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If conventional stereoscopic image display devices are used, then the basic stereoscopic function is provided, but crosstalk is not minimized and viewing angles are limited
Solution Approach 1:
The optical filter is divided into multiple polarization modulating regions (first region and second region), each with different optical axis orientations. This segmentation allows different regions to modulate polarization differently, reducing crosstalk while maintaining wide viewing angles through the specific angular relationship between regions.
Solution Approach 2:
Different regions of the optical filter are assigned different local optical properties (optical axis directions). The first polarization modulating region has an optical axis in a first direction, while the second region has an optical axis in a second direction, creating local quality variations that minimize crosstalk and enhance viewing angle performance.
2Device complexity
If conventional polarizing configurations are used, then simple structure is maintained, but contrast ratio is degraded
Solution Approach 1:
The optical filter combines multiple polarization modulating regions with different optical axis orientations in a composite structure. This composite configuration, where the bisector of the angle between optical axes is perpendicular or parallel to the absorption axis of the first polarizing plate, achieves high contrast ratio while maintaining relatively simple overall structure.
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 effectively minimizes crosstalk, enhances viewing angles, and maintains excellent contrast ratios, resulting in improved stereoscopic image quality.
Implementation Method 1
The first polarizing plate may be arranged in the side toward which the image signal from the display device is transmitted in the driving state, and includes an absorption axis.
Implementation Method 2
The optical filter may include a first polarization modulating region (hereinafter simply referred to as a 'first region') that is disposed in the side toward which the image signal after passing through the first polarizing plate is transmitted and that has an optical axis in a first direction, and a second polarization modulating region (hereinafter simply referred to as a 'second region') that is also disposed in the side toward which the image signal after passing through the first polarizing plate is transmitted and that has an optical axis in a second direction that is different from the first direction.
Data Source
AI summary
Provided are a stereoscopic image display device and a method of manufacturing the same. The method of manufacturing a stereoscopic image display device and the stereoscopic image display device manufactured by the method may minimize a phenomenon capable of degrading a stereoscopic image quality such as crosstalk, have wide viewing angle and excellent contrast characteristics and realize excellent quality of the stereoscopic image.