Display Substrate Terminal Overlap for Residue-Induced Shorts

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Solution Overview

Problem

The existing display technologies face issues with horizontal stripe defects due to residue accumulation in the channel of transfer terminals, leading to short-circuits and reduced product yield, increased production pressure, and changes in product characteristics.

Innovation Solution

A display substrate design with directly overlapped jumper and transfer terminals, utilizing multiple insulating layers to enhance electrical connection stability, allowing for smaller terminal sizes and reduced residue-induced defects, without increasing exposure amounts.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If transfer terminals are used to connect jumper terminals, then electrical connection is established, but residue accumulation in the channel causes short-circuits and horizontal stripe defects

Engineering Contradiction:

Improveelectrical connection stabilityVSAvoidresidue accumulation causing short-circuits

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent extracts and removes the channel structure from the design by directly overlapping jumper terminals with transfer terminals. This eliminates the channel where residue accumulation occurs, thereby removing the source of short-circuit defects while maintaining electrical connection functionality.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

Instead of having transfer terminals connect to jumper terminals through a channel (conventional approach), the patent inverts the connection method by directly overlapping the terminals. This reversal of the connection architecture eliminates the problematic channel structure and prevents residue accumulation.

Inventive Principle:

Principle #13The other way round (Inversion)

2Manufacturing precision

If exposure amount is increased to reduce residue defects, then product characteristics change, but production pressure increases

Engineering Contradiction:

Improveresidue defect reductionVSAvoidexposure amount

Core Design Contradiction:

Manufacturing precisionVSUse of energy by moving object

Solution Approach 1:

The patent performs preliminary action by redesigning the terminal connection structure before the exposure process. By eliminating the channel structure in advance, the design prevents residue accumulation from the outset, making additional exposure energy unnecessary and avoiding changes to product characteristics.

Inventive Principle:

Principle #10Preliminary action

3Reliability

If multiple insulating layers are added to enhance electrical connection stability, then device complexity increases, but manufacturing precision improves

Engineering Contradiction:

Improveelectrical connection stabilityVSAvoidnumber of insulating layers

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent merges the jumper terminal and transfer terminal into a single overlapping structure, eliminating the need for separate channel structures. This consolidation maintains electrical connection stability while reducing device complexity by removing unnecessary insulating layers and channel formations.

Inventive Principle:

Principle #5Merging (Combining)

Data Source

PatentUS12436436B2Display substrate and manufacturing method therefor, and display device

Publication Date: 2025.10.07 FUZHOU BOE OPTOELECTRONICS TECH CO LTD

AI summary

Provided are a display substrate and a manufacturing method therefor, and a display device. The display substrate includes: a base substrate including a display area and a frame area located on at least one side of the display area; a plurality of shift registers arranged in cascade in the frame area; a plurality of jumper terminals located between the shift registers and the display area and including first jumper terminals and second jumper terminals; a plurality of transfer terminals located between the shift registers and the display area, and located on a side of the layer where the first jumper terminals are located away from the base substrate; and an insulating layer located in the display area and the frame area, located between a layer where the second jumper terminals are located and a layer where the plurality of transfer terminals are located, and including a channel.