Liquid Crystal Device Electrostatic Shielding Aperture
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Solution Overview
Problem
The existing liquid crystal devices face issues with variations in response speed due to varying thickness of the liquid crystal layer for different color filters, leading to deviations in hue and color balance when light passes through the transparent conductive film, resulting in suboptimal display performance.
Innovation Solution
A liquid crystal device configuration with a color filter on one substrate and an electrostatic shielding layer on the opposing substrate, featuring apertures corresponding to specific coloring layers, reduces static charge disruption and maintains original color hues, while an overcoating layer and light-shielding portions help in reducing longitudinal electric field intensity and preventing impurity diffusion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a color filter is disposed on one substrate and the electrode thickness is varied according to color, then the transmittance and color balance are improved, but the liquid crystal layer thickness varies resulting in response speed variations
Solution Approach 1:
The patent applies local quality by making the electrostatic shielding layer selectively transparent only in the blue wavelength region while maintaining opacity in other regions. This localized optical property allows blue light to pass through unaffected while blocking other wavelengths, resolving the contradiction between color optimization and response speed uniformity
Solution Approach 2:
The electrostatic shielding layer is segmented into regions with different optical properties - a transparent aperture region for blue light and opaque regions for other colors. This segmentation enables different parts of the same layer to serve different functions: static charge shielding for most wavelengths while allowing blue light transmission
2Reliability
If a transparent conductive film is applied to the outer surface of the substrate, then static charge buildup is reduced, but the hue and color balance deviate from optimal conditions
Solution Approach 1:
The electrostatic shielding layer exhibits local quality with wavelength-selective transparency. It is opaque in red and green regions to maintain color balance while transparent in the blue region, thus simultaneously achieving both static charge resistance and optimal color representation
Solution Approach 2:
The electrostatic shielding layer acts as an intermediary between the transparent conductive film and the color filter. It mediates the conflict between static charge shielding and color accuracy by selectively transmitting blue light while blocking other wavelengths, allowing the transparent conductive film to function without compromising color balance
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 enhances response speed consistency, maintains accurate color representation, and achieves aesthetically appealing images with improved white balance and reduced non-uniformity, effectively addressing sensitivity to static charge and optical property variations.
Implementation Method 1
an electrostatic shielding layer disposed on a side of the second substrate facing the liquid crystal layer
Implementation Method 2
liquid crystals sealed between the substrates; generate an electric field between a pixel electrode and a common electrode... so as to drive liquid crystals
Data Source
AI summary
A liquid crystal device includes: a first substrate; a second substrate; a liquid crystal layer sandwiched between the first substrate and the second substrate; a first electrode and a second electrode disposed on a side of the first substrate facing the liquid crystal layer; and a color filter and an electrostatic shielding layer disposed on a side of the second substrate facing the liquid crystal layer, the color filter including coloring layers of at least three different colors, the electrostatic shielding layer having an aperture formed therein corresponding to the coloring layer of at least one of the three different colors.