Array Substrate Asymmetric Electrode Strips Color Cast
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Solution Overview
Problem
Liquid Crystal Display (LCD) panels experience a color cast phenomenon due to inconsistent liquid crystal molecule orientation, leading to poor picture quality when viewed from certain angles, especially under lower gray scale conditions without additional voltage, caused by asymmetry in pixel design and friction processes.
Innovation Solution
An array substrate design featuring gate lines and data lines on a base substrate with sub-pixels defined by these lines, including a pixel electrode and a common electrode with electrically connected electrode strips, and a metal wire located between the pixel electrode and the data line, which helps to align liquid crystal molecules uniformly, reducing electrical field coupling and light leakage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If traditional pixel design with symmetric electrode arrangement is used, then manufacturing process is simple, but color cast phenomenon occurs due to inconsistent liquid crystal molecule orientation
Solution Approach 1:
The patent applies asymmetry by designing the pixel electrode and common electrode with non-symmetric patterns. Specifically, the pixel electrode includes a first electrode strip and a second electrode strip with different configurations, and the common electrode has an asymmetric electrode strip arrangement. This asymmetric design creates uniform electric field distribution that aligns liquid crystal molecules consistently, eliminating the color cast phenomenon caused by asymmetric friction processes in traditional symmetric designs.
2Reliability
If additional voltage is applied to compensate for color cast, then picture quality improves, but power consumption increases
Solution Approach 1:
The patent applies preliminary action by pre-configuring the electrode strips in specific asymmetric patterns during manufacturing. The first and second electrode strips of the pixel electrode, along with the common electrode strips, are designed with predetermined orientations and positions that create uniform electric fields from the outset. This preliminary structural arrangement ensures consistent liquid crystal molecule alignment without requiring additional compensatory voltage, thereby maintaining picture quality while reducing power consumption.
3Reliability
If electrode strips are arranged with larger pitch, then liquid crystal alignment improves, but aperture ratio decreases
Solution Approach 1:
The patent applies local quality by optimizing the electrode strip configuration in different regions of the pixel. The first electrode strip and second electrode strip have different local arrangements, with varying pitches and orientations tailored to specific areas. The common electrode also has region-specific strip configurations. This localized optimization achieves uniform liquid crystal alignment across the entire pixel while minimizing the impact on aperture ratio, as the electrode strips are strategically positioned to cover only the necessary areas.
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 transfers the color cast phenomenon from the left-right viewing direction to the up-down direction, eliminating it, and addresses light leakage issues by ensuring consistent liquid crystal orientation, thereby improving display quality and reducing power consumption.
Implementation Method 1
reducing electrical field coupling and light leakage
Data Source
AI summary
The present disclosure provides an array substrate and a method of manufacturing the same, and a display panel. In an embodiment, an array substrate includes: gate lines and data lines on a base substrate; and sub-pixels defined by the gate lines and the data lines and each including a pixel electrode and a common electrode. One of the pixel electrode and the common electrode, which is away from the base substrate, includes a plurality of electrically connected electrode strips, and there is a pitch between any adjacent two of the electrode strips in a horizontal direction. The array substrate further comprises a metal wire in the sub-pixel, and the metal wire is located in a region between the pixel electrode and the data line.