Blue Phase Liquid Crystal Module With Slant Field
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Solution Overview
Problem
Blue phase liquid crystal panels face challenges with high driving voltage requirements and inability to achieve a bright state when using a vertical electrical field, limiting their display capabilities.
Innovation Solution
A blue phase liquid crystal module is designed with a wave-shaped insulation layer and V-shaped or inverse-V-shaped electrodes on a substrate, generating a slant electrical field to reduce driving voltage and enable bright state display, featuring a reflective layer that divides the substrate into transmission and reflective areas with different angles and heights to manage light phase delay.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a vertical electrical field is applied to the blue phase liquid crystal panel, then the liquid crystal molecules are aligned vertically, but the polarized light phase is not changed and the panel cannot display a bright state
Solution Approach 1:
The patent introduces a wave-shaped insulation layer that creates asymmetric electrode positioning, transforming the symmetric vertical electrical field into an asymmetric slant electrical field. This asymmetry enables the liquid crystal molecules to tilt at specific angles, thereby changing the polarization state of light and achieving bright state display while maintaining reliable display functionality.
Solution Approach 2:
The patent adds a spatial dimension by using a wave-shaped insulation layer with varying heights, which positions electrodes at different vertical levels. This dimensional change creates a slant electrical field that combines vertical and horizontal components, enabling both vertical alignment and light phase modulation to occur simultaneously.
2Ease of manufacture
If the blue phase liquid crystal panel uses conventional electrode structures, then the manufacturing process is simple, but the driving voltage is excessively high
Solution Approach 1:
The patent employs a wave-shaped (curved) insulation layer instead of a flat structure, which creates varying electrode gaps and enables more efficient electric field distribution. This curved geometry allows for reduced driving voltage while maintaining ease of manufacture through standard photolithography and etching processes.
3Ease of manufacture
If the IPS structure is adopted for blue phase liquid crystal, then the manufacturing process is simplified, but the transmission depth of the lateral electrical field is limited and large driving voltage is needed
Solution Approach 1:
The patent transitions from a purely lateral IPS structure to a three-dimensional slant field structure by positioning electrodes at different vertical heights using the wave-shaped insulation layer. This dimensional enhancement extends the effective transmission depth of the electrical field while preserving the manufacturing simplicity of the IPS approach.
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 allows for a bright state display when using a vertical electrical field, ensuring consistent optical delay across the panel.
Implementation Method 1
the response time of the blue phase liquid crystal is within sub-millisecond, and may be driven in a high speed, such as 240 Hz without adopting the Over Drive technology
Implementation Method 2
Pixel electrodes and common electrodes are arranged alternately at valleys and at peaks of the wave-shaped insulation layer, and the blue phase liquid crystals are driven by at least one slant electrical field generated between the pixel electrode and the common electrode
Implementation Method 3
The reflective layer is arranged in a portion of the down substrate. Pixel electrodes and common electrodes are arranged alternately at valleys and at peaks of the wave-shaped insulation layer
Implementation Method 4
ensuring consistent optical delay across the panel
Data Source
AI summary
A blue phase liquid crystal module, a blue phase LCD and the manufacturing are disclosed. The blue phase liquid crystal module includes an up substrate; a down substrate opposite to the up substrate; and blue phase liquid crystals between the up substrate and the down substrate. The down substrate includes at least one wave-shaped insulation layer being arranged with respect to the up substrate and the down substrate. The reflective layer is arranged in a portion of the down substrate. Pixel electrodes and common electrodes are arranged alternately at valleys and at peaks of the wave-shaped insulation layer, and the blue phase liquid crystals are driven by at least one slant electrical field generated between the pixel electrode and the common electrode.