OLED Gate Link Line Curvature for Uniform Driving Signals
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Solution Overview
Problem
The gate driving unit in organic light-emitting diode (OLED) displays experiences non-uniform input signals, leading to variations in output signals and reduced image quality.
Innovation Solution
A display apparatus with a gate driving unit provided in the non-display area, connected via link lines with first, second, and third link portions, including a substantially curved shape, to ensure uniform potential distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the gate driving unit is provided as a gate in panel (GIP) type in the non-display area, then manufacturing costs and processes are reduced, but non-uniform input signals occur resulting in gate dim and lowered image quality
Solution Approach 1:
The link line is designed with a substantially curved shape instead of a straight configuration. This curvature allows the link line to maintain a substantially constant distance from the gate driving unit along its entire length, ensuring uniform electrical characteristics and signal transmission to all gates, thereby preventing gate dim while maintaining the GIP manufacturing approach
2Device complexity
If a straight link line is used to connect the gate driving unit, then the structure is simple, but non-uniform potential distribution occurs leading to signal variations
Solution Approach 1:
The link line employs a curved configuration that maintains a substantially constant distance from the gate driving unit, ensuring uniform electrical characteristics throughout the connection. This curvature design equalizes the potential distribution along the link line, preventing signal variations while keeping the overall structure relatively simple
3Ease of operation
If the link line is positioned at a varying distance from the gate driving unit, then routing is easier, but signal uniformity deteriorates causing gate dim
Solution Approach 1:
The curved link line design maintains a substantially constant distance from the gate driving unit along its entire length. This uniform spacing ensures consistent electrical characteristics and signal transmission to all gates, preventing gate dim while providing a practical routing solution that can be easily implemented in the non-display area
Data Source
AI summary
A display apparatus includes a substrate including a display area having a subpixel and a non-display area surrounding the display area, a driving transistor and a light emitting diode provided at the subpixel, a gate driving unit provided in the non-display area, and a link line provided in the non-display area and connected to the gate driving unit, wherein the link line includes a first link portion of a first direction, a second link portion of a second direction, and a third link portion connecting the first link portion and the second link portion and having a substantially curved shape.