Array Substrate Aperture Ratio via Segmented Electrodes
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Solution Overview
Problem
Liquid crystal display panels face challenges in increasing pixel aperture ratio as image resolution increases, due to the arrangement and design of elements on the array substrate, which affects light-shielding patterns and display functionality.
Innovation Solution
The array substrate design includes three first conductive lines and three second conductive lines intersecting each other, with four switches connected to these lines, allowing for a light-shielding structure with alternating first and second portions of different widths, and pixel electrodes positioned to optimize aperture ratio without compromising display functionality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If image resolution is increased, then display quality is improved, but pixel aperture ratio decreases
Solution Approach 1:
The pixel electrode is divided into multiple segments (first pixel electrode and second pixel electrode) that are arranged in different regions. This segmentation allows each electrode to be optimized independently for its specific function, enabling higher resolution while maintaining adequate aperture ratio by distributing the electrode area across multiple smaller units rather than requiring one large continuous electrode per pixel
Solution Approach 2:
Different regions of the pixel unit are assigned different functions with locally optimized characteristics. The first pixel electrode region is optimized for one function while the second pixel electrode region is optimized for another function, allowing each region to have the appropriate electrode size and shape for its specific purpose, thereby maintaining overall aperture ratio while supporting high resolution
2Reliability
If light-shielding patterns are increased to improve display function, then display performance is improved, but aperture ratio decreases
Solution Approach 1:
The light-shielding function is extracted from the pixel electrode structure itself and implemented through separate black matrix patterns and conductive line designs. This allows the pixel electrode to be minimized for high resolution while the extracted light-shielding elements are strategically positioned to provide necessary optical isolation without consuming pixel electrode area, thereby maintaining aperture ratio
3Measurement precision
If pixel unit size is reduced, then image resolution is improved, but aperture ratio decreases
Solution Approach 1:
The electrode arrangement utilizes both horizontal and vertical dimensions efficiently by positioning the first and second pixel electrodes in different spatial regions within the pixel unit. This two-dimensional optimization allows the electrodes to be compact enough for high resolution while their combined area across different dimensions maintains the aperture ratio
Data Source
AI summary
An array substrate includes three first conductive lines, three second conductive lines, and four switches. The three first conductive lines are sequentially and consecutively arranged along a direction, and the three second conductive lines are sequentially and consecutively arranged along another direction and intersect the first conductive lines. The four switches are respectively connected to the corresponding first conductive lines and the corresponding second conductive lines. Two of the switches are connected to the second one of the first conductive lines and are substantially located between two adjacent second conductive lines, and the other two of the switches are not connected to the second one of the first conductive lines and are substantially located between the other two adjacent second conductive lines.