Polarizer Whisker Orientation for LCD Viewing Angle
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Solution Overview
Problem
Liquid crystal display panels suffer from uneven light transmittance due to liquid crystal molecule distribution, leading to distorted display colors and significant color deviation when viewed from different angles, limiting their viewing angle and display quality.
Innovation Solution
A polarizer with a polarizing functional layer and whiskers arranged within it, where the whiskers are oriented at an angle between −5 degrees and 5 degrees relative to the absorption axis of the polarizing functional layer, enhancing light scattering and improving chromaticity and hue consistency across a wider viewing angle.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a diffusion film and light intensity compensation film are attached to the LCD panel, then the light transmittance is evenly diffused and light intensity is compensated at certain angles, but the improvement effect on chromaticity perspective is relatively limited
Solution Approach 1:
The patent uses a composite structure consisting of a polarizing film containing oriented whiskers integrated within the polarizer assembly. This composite material approach combines the polarizing function with light scattering control through whisker orientation, achieving both uniform light transmittance and improved chromaticity perspective simultaneously, overcoming the limitation of separate diffusion films and compensation films
Solution Approach 2:
The patent applies local quality control by precisely controlling the orientation of whiskers within the polarizing film at specific angles relative to the absorption axis. This localized structural arrangement creates direction-dependent optical properties that improve chromaticity consistency in specific viewing directions without compromising overall light transmittance uniformity
2Adaptability or versatility
If the viewing angle of liquid crystal display panels is expanded to adapt to large-sized screens, then the display coverage is improved, but the chromaticity and hue consistency across different viewing angles deteriorates
Solution Approach 1:
The patent changes the structural parameters of the polarizer by incorporating whiskers with specific orientation angles (within ±5 degrees of perpendicular to the absorption axis). This parameter modification alters the light scattering characteristics to expand the viewing angle range while maintaining chromaticity consistency across different viewing directions
Solution Approach 2:
The patent introduces a new dimensional control mechanism by orienting whiskers at specific angles relative to the absorption axis, adding an angular dimension to the polarizer structure. This dimensional approach enables simultaneous achievement of wide viewing angle and consistent chromaticity by controlling light interaction in multiple directional dimensions
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 polarizer effectively expands the viewing angle of liquid crystal display panels, improves chromaticity consistency, and enhances display quality by reducing color deviation and improving brightness and contrast across a larger viewing range.
Implementation Method 1
The polarized functional layer after dyeing and stretching converts natural light into polarized light
Implementation Method 2
the whiskers are arranged in a directional manner within the polarized functional layer... enhancing light scattering
Data Source
AI summary
A polarizer includes a polarizing functional layer and a whisker arranged within the polarizing functional layer. After dyeing and stretching, the polarizing functional layer converts natural light into polarized light, and the whiskers are directionally arranged within the polarizing functional layer. The whisker has a long axis, and the extension direction of the long axis has an angle of −5 degrees to 5 degrees with the absorption axis of the polarizing functional layer. The present disclosure also provides a method for preparing a polarizer, and a display panel having a polarizer.