Display Peripheral Routing With Overlapped Signal and Power Lines
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Solution Overview
Problem
Existing display apparatuses face challenges in optimizing the design of sub-pixel structures to improve display quality and reduce dead space, particularly in the integration of power supply lines and signal lines, which can lead to inefficiencies and reduced performance.
Innovation Solution
The display apparatus incorporates a design where power supply lines and signal lines are arranged in the peripheral area, overlapping in a plan view, with shared materials and configurations to enhance integration and reduce dead space, and includes a transistor and capacitor structure with overlapping electrodes for improved functionality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If power supply lines and signal lines are arranged separately in the peripheral area, then signal transmission reliability is improved, but dead space increases and area utilization decreases
Solution Approach 1:
The patent merges power supply lines and signal lines into a unified routing structure in the peripheral area. The signal lines are arranged to overlap with power supply lines in plan view, utilizing the same spatial region for both functions. This merging approach eliminates dead space while maintaining signal transmission reliability through proper electrical isolation and routing design.
Solution Approach 2:
The patent employs vertical stacking by arranging signal lines and power supply lines at different heights (z-dimension) while maintaining overlap in the plan view (x-y dimension). The signal lines are positioned between the substrate and power supply lines, creating a three-dimensional arrangement that maximizes area utilization without compromising electrical performance.
2Reliability
If more lines are added to improve display quality, then display performance is improved, but device complexity increases
Solution Approach 1:
The patent implements multi-functional routing where the peripheral area serves multiple purposes: power supply delivery, signal transmission, and dead space elimination. The same spatial region accommodates both power supply lines and signal lines, reducing the total number of separate routing paths needed while maintaining display quality through proper signal and power distribution.
Data Source
AI summary
A display apparatus includes a substrate including a display area and a peripheral area outside the display area, a power supply line arranged in the peripheral area, a gate driving circuit arranged between the power supply line and the display area and including a plurality of stages arranged in a direction, and a signal line arranged in the peripheral area, electrically connected to a first stage from among the plurality of stages of the gate driving circuit, and configured to transmit a start signal, wherein the signal line overlaps the power supply line in a plan view and is arranged between the substrate and the power supply line.