Array Substrate Power Grid Around Light-Transmitting Areas

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Solution Overview

Problem

The presence of openings in the display area for structures like cameras leads to poor display uniformity due to blocked power signal lines, causing uneven voltage drops and mura phenomena around the light-transmitting areas in full-screen displays.

Innovation Solution

The array substrate design includes first and second power signal lines extending in different directions, intersecting to form a grid structure in the non-display area, with electrical connections at overlapping positions to shunt power signals uniformly across the display area, ensuring consistent voltage distribution.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If openings are provided in the display area for camera structures, then the display area can accommodate additional functional components, but the power signal lines are blocked causing poor display uniformity and mura phenomena

Engineering Contradiction:

Improvefunctional component integrationVSAvoiddisplay uniformity

Core Design Contradiction:

Adaptability or versatilityVSManufacturing precision

Solution Approach 1:

The power signal lines are segmented into first power signal lines extending in a first direction and second power signal lines extending in a second direction, allowing the power supply network to be divided into multiple paths that can bypass openings and maintain uniform power distribution across the display area

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent transitions from traditional single-direction power signal lines to a two-dimensional grid structure where power signal lines extend in both horizontal and vertical directions, enabling power supply from multiple directions and improving uniformity around openings

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

2Device complexity

If traditional single-direction power signal lines are used, then the circuit design is simple, but the power signal distribution is uneven around openings causing mura phenomena

Engineering Contradiction:

Improvecircuit design simplicityVSAvoidpower signal uniformity

Core Design Contradiction:

Device complexityVSManufacturing precision

Solution Approach 1:

The first power signal lines and second power signal lines are merged to form a grid structure where both sets of lines coexist and work together, combining the benefits of multiple power supply paths while maintaining systematic design organization

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The grid structure of power signal lines creates multiple equipotential paths that ensure uniform voltage distribution across the display area, reducing voltage drops and eliminating mura phenomena caused by uneven power supply

Inventive Principle:

Principle #12Equipotentiality

Data Source

PatentUS12550434B2Array substrate, display panel and display device including non-display area electrically connected power signal lines

Publication Date: 2026.02.10 KUNSHAN GO VISIONOX OPTO ELECTRONICS CO LTD

AI summary

An array substrate includes a light-transmitting area, a non-display area around the light-transmitting area, and a display area around the non-display area. The display area includes power signal lines. The power signal lines include first power signal lines and second power signal lines. The first power signal lines extend to the non-display area, and the second power signal lines are disposed around the light-transmitting area through the non-display area, and are electrically connected to the first power signal lines in the non-display area.