Display Device Peripheral Area Layout Optimization
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In display devices, the dead space in corner portions is often wider than in straight line portions, leading to inefficient use of space in the peripheral area.
Innovation Solution
The display device design includes a substrate with a display area and a peripheral area, where power supply lines overlap fan-out lines in corner portions, and a driving circuit is arranged between fan-out portions to minimize dead space, with sub-driving circuits spaced apart to optimize layout and reduce peripheral area usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of moving object
If wirings are arranged in a peripheral area using conventional methods, then the display area size can be increased, but the dead space in corner portions becomes wider than in straight line portions
Solution Approach 1:
The patent applies dimensionality change by arranging wirings in multiple layers (first layer and second layer) to utilize the vertical dimension. Fan-out lines are configured to extend in different directions on different layers, allowing corner portions to be filled more efficiently. This multi-layer arrangement transforms a 2D wiring problem into a 3D spatial optimization problem, reducing dead space in corner portions while maintaining increased display area.
Solution Approach 2:
The patent implements nesting by placing fan-out lines and power supply lines in a hierarchical multi-layer structure. The first fan-out portion and second fan-out portion are arranged on different layers, with lines nested within the peripheral area structure. This nested arrangement allows efficient packing of wiring components, minimizing wasted space in corner portions while supporting larger display areas.
2Reliability
If power supply lines and fan-out lines are arranged separately without overlap, then signal integrity is maintained, but the peripheral area becomes larger
Solution Approach 1:
The patent utilizes the vertical dimension by arranging power supply lines and fan-out lines on different layers. The first power supply line is arranged on a first layer while fan-out lines are arranged on a second layer, allowing spatial overlap in the plan view without electrical interference. This multi-layer configuration enables compact peripheral area arrangement while maintaining signal integrity through layer separation.
Solution Approach 2:
The patent introduces insulating layers as intermediary elements between power supply lines and fan-out lines that overlap in space. These insulating layers act as mediators that prevent electrical interference while allowing the lines to share the same vertical space, thus reducing peripheral area without compromising signal integrity.
Data Source
AI summary
A display device includes: a substrate including a display area and a peripheral area outside the display area, the display area including a first display area and a second display area; a first fan-out portion in a portion of the peripheral area outside the first display area; a second fan-out portion outside the first fan-out portion; a first power supply line in the peripheral area corresponding to one side of the display area and overlapping at least a portion of the first fan-out portion; and a second power supply line in the peripheral area outside the display area and overlapping at least a portion of the second fan-out portion.