Display Apparatus Connecting Line Routing Reduces Dead Space
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Solution Overview
Problem
Conventional display apparatuses have a large non-display area, also known as dead space, which reduces the effective display area and affects image quality due to the significant presence of driving portions and peripheral areas.
Innovation Solution
The display apparatus is designed with a substrate that includes a display area, first and second peripheral areas, and data lines extending from these areas into the display area. Connecting lines with the same material and layer structure as the pixel electrode are used to connect input lines to data lines without contacting them, reducing the dead space by optimizing the layout and material usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If a conventional display apparatus layout is used with separate driving portions and peripheral areas, then the structural integrity and functionality are maintained, but the non-display area becomes excessively large
Solution Approach 1:
The patent merges the driving portion and peripheral area into a more compact integrated layout. The data lines extend directly from the display area into the peripheral area without requiring separate large regions, combining multiple functions into a smaller space. This integration reduces the overall non-display area while maintaining all necessary driving and peripheral functions.
Solution Approach 2:
The patent utilizes multi-layer routing where data lines and connecting lines are arranged across different layers. The first connecting line extends over the first data line on different layers, allowing spatial optimization in the vertical dimension. This layered approach enables more compact in-plane layout by utilizing the third dimension for routing complexity.
2Area of stationary object
If data lines extend from peripheral areas into the display area, then the display area utilization is improved, but the risk of contact interference between lines increases
Solution Approach 1:
The patent resolves potential contact interference by routing the first connecting line over the first data line on different layers. This vertical separation in the layered structure eliminates parasitic contact while maintaining the electrical connection function. The multi-layer approach allows lines to cross spatially without electrical interference, enabling better display area utilization.
Solution Approach 2:
The insulating layer acts as an intermediary between the first connecting line and the first data line. This intermediate layer prevents direct contact and electrical interference between the lines while allowing the connecting line to extend over the data line. The insulating mediator enables close proximity routing without compromising reliability.
3Ease of manufacture
If connecting lines are made with the same material as pixel electrodes, then the manufacturing process is simplified, but the material consumption increases
Solution Approach 1:
The patent combines the material used for connecting lines with the material used for pixel electrodes into a single unified material system. This merging of material types simplifies the manufacturing process by reducing the number of different material deposition steps. Although it increases overall material consumption, the trade-off favors manufacturing simplicity and process integration.
Solution Approach 2:
The same material serves multiple functions: it is used both for the pixel electrodes that emit light and for the connecting lines that provide electrical connections. This universal material approach eliminates the need for separate material systems, simplifying the manufacturing process. The material is deposited once and then patterned into different functional structures, reducing process complexity.
Data Source
AI summary
A display apparatus includes a first data line extending from a first peripheral area into a display area, a second data line extending from a second peripheral area into the display area, a pixel electrode, a second input line disposed in the first peripheral area, and a connecting line having a first end electrically connected to the second data line in the second peripheral area and a second end electrically connected to the second input line in the first peripheral area. The connecting line passes through the display area by extending over the first data line while not contacting the first data line, and at least a portion of the connecting line and the pixel electrode include a same material.