Blue-Phase Liquid Crystal Panel Sawtooth Electrode Structure
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Solution Overview
Problem
Blue-phase liquid crystal display panels are limited by high driving voltage and inability to utilize vertical electrical fields due to birefringence properties, which restrict grayscale display capabilities and increase manufacturing complexity and cost.
Innovation Solution
A blue-phase liquid crystal display panel design featuring a first and second substrate with electrode layers forming a sawtooth-shaped wave structure, including concave and convex units, and channels for reduced driving voltage and enhanced assembly precision, allowing for both horizontal and vertical electrical field operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional electrode structures are used for blue-phase liquid crystal display, then the display can operate with horizontal electrical field, but the driving voltage is too huge and grayscale display cannot be realized with vertical electrical field
Solution Approach 1:
The patent introduces a third dimension by creating a vertically stacked electrode structure with multiple electrode layers (first electrode layer, second electrode layer, third electrode layer) arranged at different heights. This three-dimensional electrode configuration enables the generation of vertical electrical field components while maintaining horizontal field components, allowing grayscale display through vertical field control without requiring excessively high driving voltages.
Solution Approach 2:
The electrode system is segmented into multiple independent electrode layers (first, second, and third electrode layers) that can be controlled separately. Each electrode layer can be independently addressed to create different electrical field configurations, enabling both horizontal and vertical field components to achieve grayscale control with reduced voltage requirements.
2Use of energy by moving object
If electrodes are formed on ripple-protrusion surfaces to reduce driving voltage, then the driving voltage is reduced, but the assembling precision requirement becomes extremely strict and yield rate decreases
Solution Approach 1:
Instead of relying on complex two-dimensional ripple-protrusion surface geometries that demand precise alignment, the patent transitions to a three-dimensional vertically stacked electrode configuration. This vertical stacking approach reduces the lateral alignment precision requirements between substrates while still achieving the voltage reduction benefit through the enhanced electrical field distribution in the vertical dimension.
Solution Approach 2:
The vertically stacked electrode structure serves multiple functions simultaneously: it reduces driving voltage through improved field distribution, enables grayscale control via vertical field components, and relaxes assembly precision requirements by distributing electrical interaction across multiple layers rather than requiring precise single-point contact on ripple surfaces.
3Use of energy by moving object
If enhanced blue-phase liquid crystal materials are adopted to reduce driving voltage, then the driving voltage is reduced, but the material cost and synthesis complexity increase significantly
Solution Approach 1:
The patent substitutes material-based solutions (enhanced blue-phase liquid crystal compositions requiring careful monomer, photo initiator, and synthesis condition optimization) with a structural/electrical solution (vertically stacked electrode configuration). This replaces complex material science optimization with a more straightforward electrical engineering approach, reducing both material cost and synthesis complexity while achieving the same voltage reduction goal.
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 effectively reduces driving voltage and enhances yield rate by deploying electrical fields deeply within the blue-phase liquid crystal layer, enabling grayscale display and simplifying assembly precision requirements.
Implementation Method 1
The first electrode layer cooperatively operates with the second electrode layer to form an electrical field within the first space
Implementation Method 2
the blue-phase liquid crystals react as one uniaxial crystal having birefringence when being affected by the electrical field
Implementation Method 3
The first electrode layer and the second electrode layer constitute a continuous or discontinuous wave structure having a plurality of ripple units
Data Source
AI summary
A blue-phase liquid crystal display panel includes a first substrate and a second substrate parallel to the first substrate. The first substrate is spaced apart from the second substrate. The first substrate includes a first base and a first electrode layer and a second electrode layer arranged close to one side of the second substrate. A first space is arranged between the first electrode layer and the second electrode layer, and a second space is arranged between the second electrode layer and the second substrate, and a channel is configured between the first space and the second space. The first electrode layer cooperatively operates with the second electrode layer to form an electrical field within the first space and a weight of the electrical field is parallel to the first substrate or the second substrate. In addition, a manufacturing method of the blue-phase liquid crystal display panel is disclosed.