OLED Display Panel Grid-Like Auxiliary Trace Routing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
OLED display panels face poor display uniformity due to underutilization of metal traces in the display area near the lower border, where only some metal traces are used for fanout routing, leaving others idle.
Innovation Solution
The implementation of a grid-like connection between auxiliary traces and signal lines, where unused metal traces are repurposed as vertical and horizontal auxiliary lines, connected in parallel with power and reset signal lines to reduce impedance and improve display uniformity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If only some metal traces are used for fanout routing in the display area near the lower border, then the lower border can be narrowed, but the remaining metal traces are left idle and display uniformity deteriorates
Solution Approach 1:
The patent applies multi-functionality by repurposing the idle metal traces (originally intended for fanout routing) as auxiliary traces that serve dual purposes: they function as both routing traces and as impedance reduction elements. These auxiliary traces are connected in parallel with power signal lines and reset signal lines, allowing them to serve multiple functions simultaneously - maintaining the narrow lower border design while also improving display uniformity through impedance reduction.
Solution Approach 2:
The patent changes the functional parameter of idle metal traces from purely routing functions to additional impedance reduction functions. By connecting auxiliary traces in parallel with power and reset signal lines, the electrical resistance/impedance parameter is reduced, thereby improving signal quality and display uniformity without compromising the geometric optimization for narrow borders.
2Device complexity
If idle metal traces are left unused for fanout routing, then the routing design is simplified, but display uniformity and signal quality deteriorate
Solution Approach 1:
The patent applies self-service by having the idle metal traces serve themselves through a new function. Instead of being wasted resources, these traces automatically become auxiliary traces that provide impedance reduction benefits. The system utilizes existing structural elements (the idle traces) to achieve additional performance goals without requiring separate dedicated components, thereby maintaining simplicity while improving reliability.
3Length of moving object
If metal traces are added for fanout routing in the display area, then the lower border is narrowed, but impedance in power and reset signal lines increases
Solution Approach 1:
The patent merges the function of impedance reduction with the existing fanout routing structure. By combining auxiliary traces (formed from idle metal traces) with power signal lines and reset signal lines through parallel connections, the system achieves both narrow border design and impedance reduction. This merging allows the routing structure to simultaneously serve signal distribution and impedance control functions.
Data Source
AI summary
Embodiments of the present disclosure disclose an OLED display panel and a terminal device. The OLED display panel includes power signal lines and vertical auxiliary lines extending along a first direction, and horizontal auxiliary lines and reset signal lines extending along a second direction. The horizontal auxiliary lines are electrically connected to the power signal lines at intersections therebetween to form a grid-like connection, and/or the vertical auxiliary lines are electrically connected to the reset signal lines at intersections therebetween to form grid-like connection.