Array Substrate Gate Line Segmentation for Display Uniformity
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Solution Overview
Problem
Conventional liquid crystal display devices face issues with light leakage in the dark state, leading to poor contrast ratios and brightness unevenness, as well as color unevenness and signal delay due to the geometry of gate lines and their alignment with display pixels.
Innovation Solution
The array substrate design includes gate lines with polygonal-line shaped traces and grid parts arranged along specific angles to reduce Moire problems, improve shading effects, and optimize signal transmission, while the light control panel and display device incorporate these substrates to enhance display uniformity and contrast.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional gate lines are used with standard geometry, then manufacturing is simple, but brightness unevenness and color unevenness occur due to alignment with display pixels
Solution Approach 1:
The gate line is divided into multiple segments along its length, with each segment having a different geometric shape (first shape, second shape, third shape). This segmentation allows each portion to be optimized for reducing Moire patterns and improving brightness uniformity across different pixel regions, thereby enhancing overall display uniformity without requiring complete redesign of the entire gate line structure
Solution Approach 2:
Different portions of the gate line are assigned different local geometric characteristics. Specifically, first, second, and third portions have different shapes that are locally optimized for their respective positions relative to display pixels. This local optimization reduces brightness unevenness and color unevenness in specific regions while maintaining overall manufacturing feasibility
2Reliability
If gate lines are aligned with display pixels, then signal transmission is straightforward, but Moire patterns and brightness unevenness are caused
Solution Approach 1:
The gate line employs asymmetric geometric shapes at different portions, where first, second, and third shapes differ from each other. This asymmetry disrupts the periodic alignment that causes Moire patterns when conventional uniform gate lines are aligned with pixel structures, thereby eliminating Moire artifacts while maintaining effective signal transmission to pixels
Solution Approach 2:
The gate line incorporates curved or non-linear geometric shapes (first shape, second shape, third shape) instead of straight lines. These curved geometries reduce the regular periodic alignment between gate lines and display pixels, thereby suppressing Moire pattern formation while preserving electrical connection and signal transmission functionality
3Illumination intensity
If conventional light control is used, then device structure is simple, but contrast ratio and brightness uniformity are insufficient
Solution Approach 1:
The light control panel incorporates a light control layer with multiple light control regions corresponding to different pixel types (first pixel, second pixel, third pixel). Each light control region has distinct geometric characteristics that enable precise control of light transmission for different pixel regions, thereby achieving uniform brightness and high contrast ratio across the display while maintaining reasonable structural complexity through regional differentiation
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 suppresses brightness and color unevenness, mitigates signal delay, and improves the overall display effect by reducing the difference in shading effects across sub-pixels and optimizing the geometry of the light control panel and display device.
Implementation Method 1
The liquid crystal display device rotates the liquid crystal molecules in the liquid crystal molecular layer by forming an electric field between the array substrate and the opposite substrate
Implementation Method 2
The liquid crystal panel includes a polarizer, an array substrate, an opposite substrate and a liquid crystal molecular layer filled between the two substrates
Data Source
AI summary
An array substrate, a light control panel and a display device are provided. The array substrate includes a plurality of gate lines respectively extending along a first direction, a plurality of data lines respectively extending along a second direction intersected with the first direction, and a plurality of light control pixel units. Each of the plurality of gate lines includes a plurality of grid parts arranged side by side along the first direction and connected in sequence, and each of the plurality of grid parts includes a grid line and an opening area surrounded by the grid line.