Connection Pattern Penetration Holes for Gas Discharge in Display Devices
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Solution Overview
Problem
Display devices using organic insulating layers in the non-display area can suffer from pixel shrinkage defects due to gas discharge from these layers, which can deteriorate adjacent pixels.
Innovation Solution
A display device design that includes a connection pattern with specific penetration holes in the non-display area, allowing gas discharge perpendicular to the organic insulating layer, thereby preventing gas from reaching the pixel area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If organic insulating layers are used in the non-display area, then insulation performance is improved, but gas discharge occurs that deteriorates adjacent pixels
Solution Approach 1:
The harmful gas generated in the organic insulating layer is extracted and discharged through penetration holes formed in the connection pattern. The gas discharge path is directed toward the non-display area by positioning the penetration holes appropriately, preventing gas from reaching the pixel area and causing damage.
Solution Approach 2:
The connection pattern serves as an intermediary structure that contains the organic insulating layer and provides controlled gas discharge paths. The penetration holes in the connection pattern act as mediators to channel gas away from pixels, allowing the organic insulating layer to maintain its insulation function without causing pixel deterioration.
2Object-generated harmful factors
If penetration holes are formed in the connection pattern, then gas discharge path is created, but connection pattern structure becomes complex
Solution Approach 1:
The connection pattern is designed with penetration holes that create a porous structure, allowing gas to pass through. This porous design enables controlled gas discharge while maintaining the structural integrity and electrical connection functions of the connection pattern.
3Object-generated harmful factors
If second penetration holes with larger area are formed, then gas discharge efficiency is improved, but manufacturing precision requirements increase
Solution Approach 1:
The penetration holes are designed with different areas at different locations. The second penetration holes having larger areas are strategically positioned to optimize gas discharge efficiency in regions where gas generation is higher, while maintaining appropriate hole sizes in other regions to balance manufacturing feasibility.
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
The solution effectively prevents pixel shrinkage defects by ensuring that gas discharged from the organic insulating layer is directed away from the pixel area, maintaining pixel integrity.
Implementation Method 1
gas generated from the organic material is discharged from the insulating layers including the organic material
Data Source
AI summary
A display device comprises a pixel part including a plurality of pixels and disposed in a display area, a demultiplexing circuit part disposed in a non-display area surrounding the display area and transferring a data voltage to the pixel part, and a connection pattern disposed in the non-display area, transferring a constant voltage to the pixel part, and including a first portion overlapping the demultiplexing circuit part and a second portion disposed between the first portion and the pixel part. A plurality of first penetration holes vertically penetrating the first portion are formed in the first portion, and a plurality of second penetration holes vertically penetrating the second portion are formed in the second portion.