OLED Substrate Wiring Layout for High-Resolution Displays
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current display technologies face challenges in optimizing the layout design of pixel circuits for high-resolution OLED displays, particularly in reducing wiring complexity and enhancing light-transmitting space while maintaining manufacturing simplicity and cost-effectiveness.
Innovation Solution
A display substrate design featuring a base substrate with sub-pixels, voltage lines, data lines, scan signal lines, and light-emitting control signal lines, where the pixel circuit includes a driving sub-circuit, light-emitting control sub-circuits, and data writing sub-circuits, with specific signal line arrangements to control the connection between components, reducing wiring complexity and increasing light-transmitting space.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If traditional pixel circuit layout is used, then manufacturing simplicity is maintained, but wiring complexity increases and light-transmitting space decreases
Solution Approach 1:
The pixel circuit is divided into multiple functional modules: driving sub-circuit, first light-emitting control sub-circuit, second light-emitting control sub-circuit, and data writing sub-circuit. Each module is independently laid out with dedicated signal lines, separating wiring paths for different functions (light-emitting control signals, scan signals, data signals, voltage lines) to reduce cross-interference and simplify the overall wiring structure.
Solution Approach 2:
Signal lines are arranged in specific spatial relationships: first light-emitting control signal line and second light-emitting control signal line are positioned on both sides of the storage capacitor in the second direction, while extending in the first direction. The scan signal line is positioned between these control signal lines. This multi-dimensional arrangement optimizes space utilization and reduces wiring complexity.
2Manufacturing precision
If more signal lines are added for precise control, then control precision improves, but device complexity increases
Solution Approach 1:
The storage capacitor serves multiple functions: it stores charge for the driving transistor and is also positioned as a reference point for organizing control signal lines. The first and second light-emitting control signal lines both control different aspects of the light-emitting element operation while sharing a symmetric layout pattern around the capacitor, reducing overall layout complexity.
Solution Approach 2:
While maintaining overall symmetry, the layout uses asymmetric positioning of specific components: the scan signal line is positioned between the two control signal lines in the second direction, creating an asymmetric yet organized structure that simplifies routing while maintaining precise control over the pixel circuit operations.
Data Source
AI summary
A display substrate and a display panel are provided. The display substrate includes: sub-pixels, a data line, a scan signal line, a first light-emitting control signal line, and a second light-emitting control signal line, each sub-pixel includes a pixel circuit that includes a first light-emitting control sub-circuit, a second light-emitting control sub-circuit, and a data writing sub-circuit, the first light-emitting control sub-circuit is connected to the first light-emitting control signal line; the second light-emitting control sub-circuit is connected to the second light-emitting control signal line; the data writing sub-circuit is connected to the scan signal line; the first light-emitting control signal line, the scan signal line, and the second light-emitting control signal line extend along a first direction and are arranged along a second direction, and the scan signal line is between the first light-emitting control signal line and the second light-emitting control signal line in the second direction.