Segmented Metal-Oxide Connection Lines for ESD-Resistant Displays
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Solution Overview
Problem
Existing display devices are vulnerable to static electricity during the manufacturing process, which can damage the panel and affect reliability, and they also have issues with reflectivity and power consumption.
Innovation Solution
The display device incorporates a connection line made of metal oxide, disposed on the same layer as the semiconductor layer, which is partially removed between neighboring gate lines to disperse static electricity, and is designed to minimize reflectivity and simplify the manufacturing process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a continuous connection line is used to conduct electricity, then electrical connectivity is improved, but static electricity damage risk increases
Solution Approach 1:
The connection line is divided into multiple disconnected segments between neighboring gate lines, allowing electrical connectivity to be maintained where needed while preventing continuous static electricity discharge paths through the display panel
Solution Approach 2:
The connection line is selectively removed in specific regions (between neighboring gate lines) while maintaining connectivity in other areas, creating local variations in electrical properties to prevent static electricity damage while preserving necessary electrical pathways
2Reliability
If a metal connection line is used for conductivity, then electrical performance is improved, but reflectivity increases
Solution Approach 1:
The connection line is made of transparent metal oxide material that combines the electrical conductivity of metals with the optical transparency of non-metallic materials, achieving both good electrical performance and reduced reflectivity
3Reliability
If connection lines are fully connected for electrical performance, then device functionality is improved, but manufacturing complexity increases
Solution Approach 1:
The connection line is segmented into disconnected portions between gate lines, which simplifies the manufacturing process by eliminating the need for complex alignment and connection procedures while maintaining necessary electrical functionality
Data Source
AI summary
A display device includes a substrate including a display area and a non-display area, a semiconductor layer disposed on the substrate in the display area, a connection line disposed on the substrate in the non-display area, a gate insulating layer disposed on the semiconductor layer and the connection line; a gate line disposed on the gate insulating layer and connected to the connection line, at least one insulating layer disposed on the gate line and a light emitting element disposed on the at least one insulating layer. Herein, the connection line is made of a metal oxide and disposed on the same layer as the semiconductor layer, and the connection line between neighboring gate lines is partially removed and thus disconnected. Thus, it is possible to suppress damage to a display panel by dispersing static electricity generated during a process.