Array Substrate Electrode Layout for Faster Liquid Crystal Response

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Solution Overview

Problem

Conventional fringe field switching technology in display panels fails to meet the requirement of high response rate for liquid crystal driving efficiency due to the arrangement of pixel and common electrodes on different layers, limiting the speed of liquid crystal rotation.

Innovation Solution

The array substrate employs a second electrode with branch electrodes featuring alternately arranged concave and convex portions to increase the edge region, distributing more liquid crystal for simultaneous rotation, thereby accelerating the overall response speed.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Speed

If conventional fringe field switching technology is used with pixel and common electrodes arranged on different layers, then the structure is simple to manufacture, but the response speed of liquid crystal is slow

Engineering Contradiction:
Improveresponse speed of liquid crystalVSAvoidelectrode structure complexity
Core Design Contradiction:
SpeedVSDevice complexity

Solution Approach 1:

The second electrode is divided into multiple branch electrodes with concave and convex portions, segmenting the electrode structure to increase the edge region area. This segmentation allows more liquid crystal molecules to be positioned at the edges where the electric field is strongest, thereby accelerating the response speed without requiring complex multi-layer electrode arrangements

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The invention transitions from a simple planar electrode structure to a three-dimensional structure with concave and convex portions by adding vertical dimensionality. This dimensional change increases the effective edge region area of the electrode, enabling faster liquid crystal response while maintaining a relatively simple manufacturing process

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

2Productivity

If the edge region of the second electrode is increased to allow more liquid crystal to rotate simultaneously, then the response speed improves, but the manufacturing precision requirements increase

Engineering Contradiction:
Improveliquid crystal rotation efficiencyVSAvoidelectrode pattern precision
Core Design Contradiction:
ProductivityVSManufacturing precision

Solution Approach 1:

By segmenting the electrode into branch structures with concave and convex portions, the design increases the edge region perimeter without requiring extremely precise control over the absolute dimensions. The segmented structure naturally creates more edge regions where liquid crystal rotation occurs, improving productivity while keeping manufacturing precision requirements at achievable levels

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The concave and convex portions create local variations in the electrode structure that concentrate the electric field at specific locations. This local quality enhancement ensures that liquid crystal molecules at these edge regions experience stronger fields and rotate faster, improving overall productivity without requiring high precision across the entire electrode structure

Inventive Principle:
Principle #3Local quality

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 enhances the response speed of liquid crystal by increasing the area of the edge region of the second electrode, allowing more liquid crystal to rotate simultaneously, thus improving the overall response rate.

Implementation Method 1

the first electrode and the second electrode are configured to drive liquid crystal to deflect

Methodology Applied
Scientific EffectElectric field: Electric Field

Implementation Method 2

drive liquid crystal to deflect

Methodology Applied
Scientific EffectLiquid crystal deflection: Liquid Crystals

Data Source

PatentUS20260082698A1Array substrate and a display panel
Publication Date: 2026.03.19 GUANGZHOU CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD
  • US20260082698A1 patent drawing
  • US20260082698A1 patent drawing
  • US20260082698A1 patent drawing

AI summary

The present disclosure relates to an array substrate and a display panel. The array substrate includes a first electrode and a second electrode. The second electrode includes an edge electrode and a plurality of branch electrodes, with the branch electrodes connected to one side of the edge electrode and extending along a first direction. The plurality of branch electrodes are arranged at intervals along a second direction, forming slits between two adjacent branch electrodes. In a top view of the array substrate, the side of the branch electrodes close to the slit is featured with concave portions and convex portions that are alternately arranged in the first direction.