OLED Connecting Member Insulation Assistant Layer
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Solution Overview
Problem
The existing OLED display devices face issues with shorting of driving voltage lines due to conductor connections, which can lead to electrical failures and affect the reliability and longevity of the displays.
Innovation Solution
Incorporating an assistant member made of insulating material, potentially the same as the organic light emitting member, between the connecting member and the second electrode, with a thickness ranging from 500 to 3000 angstroms, to prevent shorting with the common electrode, and using a photosensitive insulating layer to further isolate the connecting member.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conductor connections are used to connect driving voltage lines and driving voltage connections, then electrical connectivity is achieved, but shorting risk increases
Solution Approach 1:
An assistant member made of insulating material is introduced as an intermediary between the connecting member and the second electrode. This assistant member prevents direct contact between conductive elements, thereby eliminating the shorting risk while maintaining electrical connectivity through the intended paths.
Solution Approach 2:
The harmful conductive property is extracted from the assistant member by using insulating material. This removes the shorting risk from the system while preserving the necessary electrical connections through separately designed conductive paths.
2Reliability
If insulating layers are added to prevent shorting, then reliability improves, but device complexity increases
Solution Approach 1:
The assistant member serves multiple functions: it provides electrical insulation to prevent shorting, maintains structural integrity of the device, and can be integrated with existing manufacturing processes. This multi-functionality prevents complexity increase despite the addition of the insulating element.
Solution Approach 2:
The assistant member is combined with the organic light emitting member or made from the same material, merging two functions into a single component. This integration reduces the number of separate layers and simplifies the overall device structure while maintaining shorting prevention.
Data Source
AI summary
A display includes a substrate, a plurality of first and second signal lines formed on the substrate and insulated from each other, a plurality of driving voltage lines formed with a same layer as the first signal lines, at least one driving voltage connection formed with a same layer as the second signal lines, at least one connecting member electrically connecting the driving voltage lines and the driving voltage connection, at least one first thin film transistor connected to the first and second signal lines, at least one second thin film transistor connected to the first thin film transistor and the driving voltage lines, at least one first electrode connected to the second thin film transistors, at least one second electrode opposing the first electrode, at least one organic light emitting member formed between the first electrode and the second electrode, and at least one assistant member formed between the connecting member and the second electrode.