Curved Display Panel Porous Alignment Layer Black Cluster Prevention
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Solution Overview
Problem
Curved LCD screens suffer from displacement deviations between substrates, leading to display issues such as black clusters due to poor coordination of liquid crystal molecules, affecting the display effect.
Innovation Solution
A curved display panel with a porous structure layer and alignment materials on the first substrate, maintaining a pre-tilt angle of 90° for liquid crystal molecules, ensuring light passes through both layers, thereby preventing black clusters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a curved LCD screen is manufactured with conventional alignment layers, then the manufacturing process is simple, but displacement deviations between substrates cause black clusters and poor display effect
Solution Approach 1:
The patent employs a porous alignment layer with vertically distributed pores that penetrate through the layer thickness. This porous structure enables liquid crystal molecules to align properly at 90° pre-tilt angle, ensuring consistent light transmission and eliminating black clusters in curved displays while maintaining manufacturing feasibility
Solution Approach 2:
The alignment layer is segmented into multiple functional zones: a porous structure layer with vertical pores for molecular alignment, and alignment material regions filling the pores. This segmentation allows independent optimization of each zone's function to achieve both proper liquid crystal orientation and manufacturing simplicity
2Illumination intensity
If the pre-tilt angle of liquid crystal molecules is not maintained at 90°, then the alignment layer structure can be simpler, but light cannot pass through the liquid crystal layer consistently, causing black clusters
Solution Approach 1:
The patent applies local quality by creating regions with different properties within the alignment layer. The porous structure provides vertical channels that locally guide liquid crystal molecules to achieve 90° pre-tilt angle, while other regions provide structural support. This localized functional differentiation ensures proper light transmission without requiring complex overall structure control
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 black clusters and improves the display effect by maintaining the pre-tilt angle of liquid crystal molecules, ensuring consistent light transmission through the liquid crystal layer.
Implementation Method 1
The alignment materials in each filling hole of the first alignment layer are set perpendicular to a surface of the first substrate; when a voltage is applied on both sides of the liquid crystal layer, the pre-tilt angle of the liquid crystal molecules close to the first alignment layer will be maintained at 90°
Data Source
AI summary
The present disclosure provides a curved display panel and a manufacturing method thereof and a display device. The curved display panel includes a first substrate, a second substrate, a liquid crystal layer, a first alignment layer and a second alignment layer. The first substrate and the second substrate are opposite to each other. The first alignment layer is located on a surface of the first substrate facing the second substrate. The second alignment layer is located on a surface of second substrate facing the first substrate. The liquid crystal layer is located between the first alignment layer and the second alignment layer. The first alignment layer includes a porous structure layer and alignment materials. The porous structure layer defines a plurality of spaced filling holes. The plurality of filling holes are perpendicular to the surface of the first substrate. The alignment materials are filled within the plurality of filling holes.