LCD Column Spacer Asymmetry for Pressure Endurance
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Solution Overview
Problem
Liquid crystal displays (LCDs) face issues with external pressure, as existing column spacers have low elasticity intensity and can collapse, leading to light leakage and spots, while increasing their density and scale to improve endurance reduces elasticity.
Innovation Solution
The design incorporates column spacers with a pillar and a base, where the pillar is narrower than the base, and the base has radial or cross-shaped branches, providing enhanced structural support to absorb external impacts without reducing elasticity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the density and scale of column spacers are improved to endure increased pressure, then the endurance quality is improved, but the elasticity intensity is reduced
Solution Approach 1:
The column spacer is divided into two functional parts: a base portion for承受ing external pressure and a pillar portion for maintaining cell gap elasticity. The base has a larger cross-sectional area to absorb impact forces, while the pillar maintains a narrower profile to preserve elastic properties and prevent curvature.
Solution Approach 2:
Different portions of the column spacer are designed with different geometric properties suited to their specific functions. The base portion has increased density and scale to handle pressure, while the pillar portion maintains smaller dimensions to preserve elasticity intensity, creating local optimization throughout the structure.
2Reliability
If column spacers are made with larger scale to withstand external pressure, then pressure endurance is improved, but light leakage occurs due to panel curvature
Solution Approach 1:
The column spacer structure separates the pressure-bearing function (base portion) from the elasticity-maintaining function (pillar portion). This segmentation allows the base to be enlarged for pressure endurance while the pillar remains narrow enough to prevent panel curvature and light leakage.
Solution Approach 2:
The column spacer features an asymmetric structure where the base portion has a larger cross-sectional area than the pillar portion. This asymmetric design optimizes both pressure endurance (through the wider base) and elasticity intensity (through the narrower pillar), preventing the panel from curving under pressure.
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 allows the LCD to withstand external pressure without collapsing the underlayers, maintaining elasticity and preventing light leakage and spot formation.
Implementation Method 1
the base has a plurality of branches extended to the center with a radial shape... The branches may be extended in upper and lower directions with a line shape... The branches may be extended to upper, lower, left, and right directions with a cross shape
Implementation Method 2
the width of the pillar is less than that of the base portion... maintaining elasticity and preventing light leakage and spot formation
Data Source
AI summary
A liquid crystal display is provided, which includes a first panel and a second panel facing each other, a liquid crystal layer formed between the first and second panels, and a plurality of column spacers each having a pillar and a base supporting the pillar. The width of the pillar is less than that of the base portion.