Liquid Crystal Lens Planarization Layer Electric Field Control
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Solution Overview
Problem
Conventional liquid crystal lenses with oblique electrodes suffer from phase deviations due to large lateral electric fields, leading to uneven refractivity and a compromised stereoscopic display effect.
Innovation Solution
Incorporating a planarization layer between the transparent electrode and alignment layers in the liquid crystal lens, which reduces the strength of the lateral electric field and minimizes phase deviations, thereby enhancing the refractive effect.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If oblique electrodes are used in the liquid crystal lens, then the stereoscopic display function is achieved, but lateral electric fields cause liquid crystal phase deviations and uneven refractivity
Solution Approach 1:
An alignment layer is introduced as an intermediary component between the transparent electrode and the liquid crystal layer. This alignment layer mediates the interaction by providing a controlled anchoring effect that overrides the disruptive lateral electric field from the oblique electrode, ensuring uniform liquid crystal orientation and refractivity while preserving the stereoscopic display function.
2Ease of manufacture
If a pre-tilt direction of liquid crystal is not parallel to the direction of the lateral electric field, then the liquid crystal lens can be formed with oblique electrodes, but phase deviation occurs and refractive effect is reduced
Solution Approach 1:
The alignment layer is configured with specific local properties - its alignment direction is set to be parallel to the lateral electric field direction at critical positions. This local quality control ensures that in regions where lateral electric fields are strongest, the liquid crystal orientation is precisely controlled to prevent phase deviation, while maintaining overall lens functionality.
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 addition of a planarization layer between the transparent electrode and alignment layers reduces liquid crystal phase deviations, resulting in a more continuous and improved refractive effect, enhancing the stereoscopic display performance.
Implementation Method 1
a liquid crystal layer 3 between the first substrate 1 and the second substrate 2
Implementation Method 2
a relatively large voltage difference is formed between the first transparent electrode layer 5 of the first substrate 1 and the second transparent electrode layer 7 of the second substrate 2
Implementation Method 3
an alignment direction of the first alignment layer 4 is not parallel to a direction of the lateral electric field, which thereby generates a liquid crystal phase deviation
Data Source
AI summary
A liquid crystal lens, a fabrication method thereof and a display device are provided, the liquid crystal lens comprises: a first substrate (1); a second substrate (2), opposed to the first substrate (1); a liquid crystal layer (3), interposed between the first substrate (1) and the second substrate (2); a first transparent electrode layer (5), located on a side of the first substrate (1) close to the liquid crystal layer (3); a planarization layer (6), located on a side of the first transparent electrode layer (5) close to the liquid crystal layer (3); a first alignment layer (4), located on a side of the planarization layer (6) close to the liquid crystal layer (3); a second transparent electrode layer (7), disposed on a side of the second substrate (2) close to the liquid crystal layer; a second alignment layer (8), disposed on a side of the second transparent electrode layer (7) close to the liquid crystal layer (3). The first alignment layer (4) is moved to a position where an lateral electric field is weaker, by forming the planarization layer (6) between the first transparent electrode layer (5) and the first alignment layer (4), which thus reduces a liquid crystal phase deviation and improves a refractive effect of the liquid crystal lens.