Liquid Crystal Display Panel with Polarization Adjusting Layer
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Solution Overview
Problem
Conventional liquid crystal display panels using linear or circular polarized light cause eye fatigue due to the consistent polarization direction, which is not alleviated by existing technologies.
Innovation Solution
A liquid crystal display panel with a polarization adjusting layer comprising a base body and optical anisotropic crystal grains is used to modify the polarization direction of emitted light, allowing for the emission of linear polarized light with varying directions and various types of elliptical polarized light, mimicking natural light.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If linear or circular polarized light is used in liquid crystal display, then the display can control light intensity and show images, but the consistent polarization direction causes eye fatigue
Solution Approach 1:
The patent changes the polarization parameter from a single fixed direction to multiple varying directions by introducing optical anisotropic crystal grains with different orientation angles (0° to 90°) dispersed in the polarization adjusting layer, transforming the output from consistent polarized light to light with diverse polarization directions
Solution Approach 2:
The patent uses a composite structure consisting of a base material (polyester resin) and dispersed optical anisotropic crystal grains (quartz, calcite, or titanium oxide) with different refractive indices and orientation angles, creating a polarization adjusting layer that modifies the polarization state of transmitted light
2Manufacturing precision
If a single polarization direction is used, then the liquid crystal display can achieve good image quality, but the eye fatigue cannot be eliminated
Solution Approach 1:
The patent introduces dynamic variation in polarization direction by dispersing optical anisotropic crystal grains with different orientation angles throughout the polarization adjusting layer, making the polarization state dynamic and varied rather than static and uniform, thereby reducing eye fatigue while maintaining image quality
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 solution reduces eye fatigue by emitting light with diverse polarization directions, making the display more comfortable to view without the fatigue associated with single-direction polarized light.
Implementation Method 1
a polarization adjusting layer disposed on an outer side of the liquid crystal cell and used to adjust the polarization direction of linear polarized light emitted out from the liquid crystal cell and passing through the polarization adjusting layer, wherein the polarization adjusting layer comprises a base body and optical anisotropic crystal grains dispersed within the base body
Data Source
AI summary
A liquid crystal display panel according to an embodiment of the present invention comprises: a backlight source; a liquid crystal cell; and a polarization adjusting layer disposed outside the liquid crystal cell and used to adjust the polarization direction of the linear polarized light emitted from the liquid crystal cell and transmitted through the polarization adjusting layer, wherein the polarization adjusting layer comprises a base body and optical anisotropic crystal grains dispersed within the base body. Also a liquid crystal display device is provided.