LCD Array Substrate Layout for Liquid Crystal Alignment and Transmittance
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The challenge in the liquid crystal display (LCD) industry is to improve transmittance while addressing the limitations of raw materials and equipment precision, which hinders the development of new display technologies like Mini LEDs, OLEDs, and QLEDs, leading to LCD maintaining a dominant position due to its mature technology and low cost.
Innovation Solution
The proposed solution involves an array substrate with a specific configuration including transparent common electrode lines and pixel electrodes, where the orthographic projection of gaps between these electrodes overlaps with pixel electrodes, allowing for improved light transmittance and aperture ratio, and an alignment method using different voltages applied to these electrodes to control liquid crystal molecules.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a continuous transparent common electrode layer is used, then the alignment of liquid crystal molecules is effective, but the light transmittance is reduced due to the continuous electrode structure
Solution Approach 1:
The continuous transparent common electrode layer is divided into multiple disconnected transparent common electrode lines. These segmented lines are arranged in a specific pattern where they do not form a continuous path, thereby reducing light blocking while still providing sufficient alignment function through their distributed structure
Solution Approach 2:
Different regions of the display panel have different electrode line arrangements. The transparent common electrode lines are positioned to provide localized alignment control where needed while leaving other regions more open for light transmission, creating spatial variation in electrode density and connectivity
2Area of stationary object
If transparent common electrode lines are disconnected and arranged to overlap with pixel electrodes, then the aperture ratio is increased, but the alignment control of liquid crystal molecules becomes more difficult
Solution Approach 1:
The electrode lines are arranged in multiple layers or patterns that extend in different directions. By using electrode lines that extend in the first direction (intersecting the second direction), the patent creates a two-dimensional distribution pattern that provides alignment control across different spatial dimensions while maintaining high aperture ratio
Solution Approach 2:
The transparent common electrode lines serve as intermediary structures between the pixel electrodes and the liquid crystal molecules. They provide the necessary electric field for alignment without directly contacting the pixel electrodes, acting as a mediating element that enables alignment control while preserving 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 configuration enhances light transmittance and reduces dark fringes, improving the display effect and maintaining low power consumption, while simplifying the manufacturing process and accommodating different capacitance requirements.
Implementation Method 1
applying different alignment voltages to these lines to control liquid crystal molecules
Implementation Method 2
alignment method of liquid crystal molecules
Data Source
AI summary
An array substrate includes a first substrate, data lines, a pixel electrode layer, first transparent common electrode lines, and second transparent common electrode lines disposed on the first substrate. The data lines extend in a first direction and are arranged at intervals in a second direction intersecting the first direction. The pixel electrode layer includes a plurality of pixel electrodes. Both the first transparent common electrode lines and the second transparent common electrode lines extend in the first direction and are disposed insulated from the pixel electrode layer, and the second transparent common electrode lines are disposed disconnected from the first transparent common electrode lines. An orthographic projection of a gap between a first and a second transparent common electrode line adjacent to each other in the second direction on the first substrate overlaps with an orthographic projection of at least one pixel electrode on the first substrate.