Display Apparatus Non-Display Area Reduction via Layer Stacking
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Solution Overview
Problem
The increasing demand for compact and high-resolution display apparatuses has led to a need for an efficient space layout between the driving circuit and power lines in the non-display area, as the relative space occupied by these components has grown, necessitating a reduction in the non-display area.
Innovation Solution
The display apparatus incorporates a driving circuit on a layer over a first power line, with a second power line electrically connected to the first power line and positioned on the same layer as one electrode of the driving circuit, allowing for overlapping and efficient use of space, and includes a shielding layer and organic/inorganic layers to optimize the layout.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of moving object
If the driving circuit and power lines are arranged in the non-display area, then the display apparatus can be compact and high-resolution, but the non-display area occupies increasing relative space
Solution Approach 1:
The patent applies multi-layer stacking to arrange power lines and driving circuits in different layers within the non-display area. Specifically, power lines are placed in lower layers while driving circuits are positioned in upper layers, utilizing the vertical dimension to reduce horizontal space occupation and minimize the non-display area footprint.
Solution Approach 2:
The patent implements nested arrangement where the driving circuit is positioned over the power lines in a stacked configuration. The power lines are embedded in lower layers, and the driving circuit is placed in upper layers, creating a nested structure that maximizes space utilization and reduces the overall non-display area.
2Area of stationary object
If power lines are arranged under the driving circuit, then space is efficiently utilized, but electrical connection and signal integrity may be compromised
Solution Approach 1:
The patent introduces intermediate connection structures, specifically contact holes and conductive layers, to establish reliable electrical connections between the power lines in lower layers and the driving circuits in upper layers. These intermediary elements ensure signal integrity while maintaining the stacked space-efficient arrangement.
Solution Approach 2:
The patent divides the electrical connection path into multiple segments across different layers. Power lines are segmented into different layer levels, with connection points established through controlled openings and conductive fill, allowing efficient routing while maintaining connection reliability through distributed connection points rather than single-point connections.
Data Source
AI summary
A display apparatus has a display area and a non-display area around the display area, the display apparatus includes, in the non-display area, a first power line, a driving circuit on a layer over the first power line, and a second power line electrically connected to the first power line and on a same layer on which one electrode of the driving circuit is arranged.