Array Substrate Data Line Slope Angle Optimization
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The manufacturing process of curved liquid crystal display panels results in varying relative displacements of the black matrix, leading to non-uniform transmittance and display quality due to mechanical bending, which complicates the production and affects the aperture ratio.
Innovation Solution
Optimizing the side slope angle of data lines on the array substrate to less than 60° and controlling their thickness between 2000 Å to 3500 Å, along with a reduced black matrix size, minimizes interference with liquid crystal molecules and allows for a smaller black matrix, thereby increasing the aperture ratio and uniformity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of moving object
If the black matrix size is reduced to increase aperture ratio, then the aperture ratio is improved, but the light leakage control deteriorates
Solution Approach 1:
The patent applies local quality by creating different side slope angles in different regions of the data line. The side slope angle is controlled to be 45°-60° in the region facing the black matrix and 15°-30° in other regions. This localized differentiation allows the data line to provide effective electric field shielding where needed (near the black matrix) while maintaining overall aperture ratio by not requiring uniform thickening throughout the entire data line structure.
Solution Approach 2:
The patent changes the geometric parameters of the data line, specifically the side slope angle and thickness. By optimizing the side slope angle to 45°-60° in the black matrix facing region and controlling the data line thickness to 2000-3500 Å, the patent achieves better light leakage control while maintaining acceptable aperture ratio. These parameter changes directly address the trade-off between black matrix size and light leakage.
2Object-affected harmful factors
If the data line thickness is increased to reduce light leakage, then the light leakage is reduced, but the aperture ratio deteriorates
Solution Approach 1:
The patent applies local quality by creating different side slope angles in different regions of the data line. The side slope angle is controlled to be 45°-60° in the region facing the black matrix and 15°-30° in other regions. This localized differentiation allows the data line to provide effective electric field shielding where needed (near the black matrix) while maintaining overall aperture ratio by not requiring uniform thickening throughout the entire data line structure.
Solution Approach 2:
The patent changes the geometric parameters of the data line, specifically the side slope angle and thickness. By optimizing the side slope angle to 45°-60° in the black matrix facing region and controlling the data line thickness to 2000-3500 Å, the patent achieves better light leakage control while maintaining acceptable aperture ratio. These parameter changes directly address the trade-off between black matrix size and light leakage.
3Object-affected harmful factors
If the black matrix is enlarged to prevent light leakage, then the light leakage is reduced, but the aperture ratio and display uniformity deteriorate
Solution Approach 1:
The patent extracts the light leakage prevention function from the black matrix and transfers it to the data line structure. By designing the data line with optimized side slope angles (45°-60°) and thickness (2000-3500 Å), the data line itself provides effective electric field shielding. This allows the black matrix to be reduced in size without compromising light leakage control, thereby improving display uniformity and aperture ratio.
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 approach reduces light leakage, enhances display uniformity, and increases the aperture ratio by minimizing the interference of side electric fields with liquid crystal molecules, resulting in improved display performance and manufacturing efficiency.
Implementation Method 1
The deformation of the plane glass plates are different at different positions of the plane glass plates after bending. This will lead to the different relative displacement of the black matrix at different positions of the panel from the array substrate, further lead to different transmittance of the panel
Data Source
AI summary
An array substrate, a display panel and a display device. The array substrate includes a base substrate including a plurality of pixel areas and a first data line on the base substrate and between adjacent pixel areas; a side slope angle of the first data line is not greater than about 60°.