Display Peripheral Line Stacking for Compact Gate Driver Routing
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Solution Overview
Problem
Existing display apparatuses face challenges in optimizing the design of sub-pixels and peripheral areas to improve display quality and efficiency, particularly in integrating power supply lines and signal lines effectively.
Innovation Solution
The display apparatus incorporates a design where power supply lines and signal lines overlap in a plan view, with shared materials and strategic placement to enhance connectivity and efficiency, and includes a substrate with overlapping electrodes and capacitors to optimize sub-pixel circuits.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If power supply lines and signal lines are arranged separately in the peripheral area, then routing and manufacturing are simpler, but the layout occupies more space and reduces display area
Solution Approach 1:
The patent merges the power supply line and signal line into a single integrated line structure in the peripheral area. The power supply line is positioned at a lower layer while the signal line is positioned at an upper layer, allowing both functions to share the same spatial routing path. This merging approach maximizes the display area by minimizing the space occupied by separate line arrangements while maintaining distinct electrical functions through vertical layer separation.
Solution Approach 2:
The patent resolves the routing conflict between power supply lines and signal lines by transitioning from a two-dimensional planar arrangement to a three-dimensional layered structure. The power supply line is placed in a lower layer and the signal line in an upper layer, allowing them to overlap in the plan view without electrical interference. This dimensional transition enables compact layout while maintaining functional separation.
2Productivity
If multiple lines are routed through the peripheral area, then connectivity is improved, but manufacturing precision requirements increase due to overlapping structures
Solution Approach 1:
The patent uses vertical layering to resolve manufacturing precision challenges. By positioning the power supply line in a lower layer and the signal line in an upper layer, the design allows both lines to occupy the same planar routing path without requiring precise lateral positioning. The vertical separation provides inherent protection against short circuits and interference, reducing the stringency of lateral positioning requirements while maintaining high connectivity efficiency.
3Reliability
If the gate driving circuit includes multiple stages, then gate signal control is improved, but the circuit occupies more space in the peripheral area
Solution Approach 1:
The patent integrates multiple gate driving stages into a compact configuration where subsequent stages are positioned adjacent to or overlapping with previous stages in the vertical direction. The gate driving circuit stages are arranged to share common routing paths and utilize overlapping line structures, significantly reducing the peripheral area space required while maintaining the multi-stage functionality needed for accurate gate signal control.
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.