Array Substrate Multilayer Power Lines for Stable OLED Drive Voltage

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Excessive resistance in power lines of OLED display panels leads to insufficient drive voltage, affecting the display effect.

Innovation Solution

The array substrate design includes a first conductive layer with a first power line and a second conductive layer with signal and power lines connected through via holes, increasing the distribution area of power lines and reducing resistance, while the second conductive layer also includes signal lines alongside power lines to enrich functionality.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If power lines are designed with conventional single-layer structure, then device complexity is reduced, but resistance increases leading to insufficient drive voltage

Engineering Contradiction:

Improvedrive voltage sufficiencyVSAvoidconductive layer structure

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent transitions from a conventional single-layer power line structure to a multi-layer conductive structure. The first power line is disposed in the first conductive layer, while the second power line is disposed in the second conductive layer, utilizing the vertical dimension to increase distribution area and reduce resistance without significantly increasing horizontal device complexity.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

Solution Approach 2:

The power line function is segmented across multiple conductive layers. The first conductive layer contains the first power line, while the second conductive layer contains the second power line, allowing the power distribution function to be divided and distributed across different layers to reduce overall resistance.

Inventive Principle:

Principle #1Segmentation

2Adaptability or versatility

If the second conductive layer includes only power lines, then manufacturing process is simplified, but functionality is limited

Engineering Contradiction:

Improveconductive layer functionalityVSAvoidconductive layer configuration

Core Design Contradiction:

Adaptability or versatilityVSEase of manufacture

Solution Approach 1:

The second conductive layer is designed to serve multiple functions simultaneously. It contains the second power line for power transmission and the first signal line for signal transmission, making the second conductive layer a multi-functional layer that handles both power and signal functions.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The patent merges the power transmission function and signal transmission function into the same second conductive layer. The second power line and first signal line are both disposed in the second conductive layer, combining multiple functions in a single layer to enhance versatility.

Inventive Principle:

Principle #5Merging (Combining)

Data Source

PatentUS20250255129A1Array substrate and display panel

Publication Date: 2025.08.07 HEFEI VISIONOX TECH CO LTD

AI summary

Provided are an array substrate and a display panel. The array substrate includes: a substrate (01); a first conductive layer (02), the first conductive layer (02) including a first power line (210); and a second conductive layer (03), the second conductive layer (03) including at least one first signal line (310) and at least one second signal line (320) spaced apart in a first direction (X) and at least one second power line (330) between the first signal line (310) and the second signal line (320), where the first power line (210), the first signal line (310), the second signal line (320) and the second power line (330) are each formed as extending in a second direction (Y), and the first power line (210) and the second power line (330) are connected through via holes.