OLED Repair Line Layer Layout to Prevent Static Electricity Damage
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Solution Overview
Problem
Static electricity between repair lines in organic light emitting diode displays can cause damage, which is not effectively addressed by existing technologies.
Innovation Solution
The display device includes first and second repair lines on different layers with insulating layers in between, and end portions of these lines are positioned to avoid facing each other, with one line closer to the substrate and more insulating layers beneath it, preventing static electricity buildup.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If repair lines are disposed on the same layer, then the manufacturing process is simpler, but static electricity is generated between the repair lines causing damage
Solution Approach 1:
The patent applies dimensionality change by moving repair lines from the same layer to different layers (first repair line on first layer, second repair line on second layer). This spatial redistribution in the vertical dimension eliminates static electricity generation between repair lines while maintaining manufacturing feasibility through sequential layer formation processes.
Solution Approach 2:
The patent introduces an insulating layer as an intermediary between the first repair line and the second repair line on different layers. This insulating layer acts as a mediator that prevents static electricity discharge between the conductive repair lines, solving the harmful effect while allowing close proximity positioning.
2Area of stationary object
If repair lines are positioned close to each other, then the device area is reduced, but static electricity is generated causing damage
Solution Approach 1:
The patent resolves the area-static electricity contradiction by positioning repair lines close in the horizontal plane but on different vertical layers. This three-dimensional arrangement minimizes the horizontal area occupied by repair lines while preventing static electricity generation through vertical separation, achieving both compactness and safety.
Solution Approach 2:
The insulating layer serves as a mediator that enables close positioning of repair lines in the horizontal plane while preventing static electricity discharge. It allows the repair lines to be adjacent in plan view without direct electrical interaction, thus reducing device area without compromising safety.
3Object-affected harmful factors
If insulating layers are added between repair lines on different layers, then static electricity is prevented, but the device complexity increases
Solution Approach 1:
The patent applies universality by using the insulating layer for multiple functions: it serves as both the separation layer between different repair line layers and as the protective barrier against static electricity. This multi-functional design prevents static electricity damage without adding extra dedicated components, thus limiting the increase in device complexity.
Solution Approach 2:
The patent merges the insulating layer function with the existing multi-layer structure of the display device. The insulating layer is integrated into the sequential layer formation process (first layer with first repair line, second layer with second repair line), combining structural separation and electrical protection functions within the existing manufacturing framework.
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
This configuration prevents static electricity from generating between the repair lines, thereby protecting them from damage.
Implementation Method 1
The display device may further include an insulating layer between the first repair line and the second repair line
Data Source
AI summary
A display device includes a first anode electrode and a second anode electrode on a substrate, a first light emitting layer on the first anode electrode and a second light emitting layer on the second anode electrode, a common electrode on the first light emitting layer and the second light emitting layer, a first connection electrode connected to the first anode electrode, a second connection electrode connected to the second anode electrode, a first repair line overlapping the first connection electrode in a plan view, and a second repair line overlapping the second connection electrode in a plan view. The first repair line and the second repair line are disposed on different layers.