IPS Array Substrate with Segmented Common Electrodes
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing In-Plane Switching (IPS) mode liquid crystal display devices require high drive voltage and have low light transmission rates due to the marginal electric field effect.
Innovation Solution
The array substrate design includes first and second common electrodes in the same layer, non-overlapping and spaced apart from the pixel electrode, with specific voltage differences applied to create multiple superimposed electric fields, reducing drive voltage and enhancing light transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a conventional IPS mode liquid crystal display device uses a single common electrode and pixel electrode configuration, then the structure is simple, but the drive voltage is high and light transmission rate is low
Solution Approach 1:
The patent divides the single common electrode into two separate common electrodes (first common electrode and second common electrode) that are positioned on opposite sides of the pixel electrode. This segmentation creates multiple electric fields that work together to reduce the required drive voltage while maintaining the IPS mode operation and wide viewing angle characteristics.
2Device complexity
If a conventional IPS mode liquid crystal display device uses a single common electrode and pixel electrode configuration, then the structure is simple, but the light transmission rate is low
Solution Approach 1:
By segmenting the common electrode into two separate electrodes positioned on opposite sides of the pixel electrode, the patent creates a more efficient electric field distribution. This reduces the voltage required to achieve the same liquid crystal rotation effect, thereby increasing the light transmission rate through the display panel.
Solution Approach 2:
The patent changes the voltage parameters by applying different voltages to the first and second common electrodes relative to the pixel electrode. This creates multiple electric fields with optimized strength distributions that improve light transmission efficiency while maintaining wide viewing angles.
3Use of energy by moving object
If multiple common electrodes are introduced to reduce drive voltage, then the drive voltage is reduced, but the device complexity increases
Solution Approach 1:
The patent segments the common electrode into two parts positioned symmetrically on opposite sides of the pixel electrode. This segmentation reduces drive voltage by creating multiple cooperative electric fields while maintaining relative structural simplicity through the symmetric arrangement.
Solution Approach 2:
The first and second common electrodes work together in combination with the pixel electrode to create a unified electric field system. This merging of multiple electrodes into a cooperative system achieves voltage reduction while maintaining overall structural coherence and functional simplicity.
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 effectively reduces the drive voltage required and increases light transmission rates by creating multiple electric fields that facilitate liquid crystal molecule rotation, improving display performance.
Implementation Method 1
the first common electrodes, the pixel electrode and the second common electrodes are spaced apart from each other... creating multiple superimposed electric fields
Implementation Method 2
the crystal liquid molecules can be driven to rotate through the planar electric field generated between the pixel electrode and the common electrodes
Data Source
AI summary
The present invention discloses an array substrate, preparation and driving methods thereof, a liquid crystal display panel and a display device, for reducing the drive voltage required by a liquid crystal display device, and increasing the light transmission rate. The array substrate comprises data lines and gate lines intersecting transversely and longitudinally to form a plurality of pixel units, each pixel unit comprising a pixel electrode and common electrodes, wherein the common electrodes include first common electrodes and second common electrodes; the first common electrodes, the second common electrodes and the pixel electrode are located in a same layer and do not overlap with each other; and the first common electrodes and the second common electrodes are in strip patterns, and the first common electrodes, the pixel electrode and the second common electrode are spaced apart from each other.