Display Substrate Extended Outer Shape for Lead Wire Routing
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Solution Overview
Problem
Conventional display devices face challenges in securing sufficient space for lead wires due to the narrowing frame, leading to potential wire breaks or short circuits between wires.
Innovation Solution
A substrate configuration with an extended outer shape section for signal supply, where lead wires connect to the display area, and circuit units are arranged to interpose between the display area and the circuit section, including output transistors, capacitors, and control transistors, with varying extension dimensions and orientations to optimize space usage and prevent short circuits.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If the frame is narrowed to achieve a more compact display device, then the overall size is reduced, but sufficient space for lead wires cannot be secured, causing wire breaks or short circuits
Solution Approach 1:
The patent extends the substrate in the direction from the signal supply section toward the display area, creating an extended outer shape section. This dimensional extension provides additional space for routing lead wires without increasing the frame width perpendicular to the display area, thus resolving the contradiction between compact frame size and sufficient wire routing space.
Solution Approach 2:
The substrate is divided into distinct functional sections: a signal supply section, an extended outer shape section for wire routing, and a display area. This segmentation allows each section to be optimized independently - the extended section can be dedicated to lead wire placement while the display area maintains its compact dimensions.
2Area of stationary object
If lead wires are placed closer together to save space, then the frame can be narrower, but the risk of short circuits between wires increases
Solution Approach 1:
The extended outer shape section acts as an intermediary zone between the signal supply section and the display area. This intermediate region provides a dedicated pathway for lead wires with sufficient separation distance, preventing short circuits while still allowing compact overall device dimensions.
3Productivity
If circuit units are arranged densely to reduce device size, then productivity increases, but space for lead wires and circuit connections is insufficient
Solution Approach 1:
By extending the substrate in the direction from signal supply to display area, the patent creates additional routing dimension for wires. This allows circuit units to be arranged densely in the display area while wires can be routed through the extended section without increasing the footprint perpendicular to the display plane.
Data Source
AI summary
A substrate for a display device, the substrate includes a signal supply section that supplies a signal; a substrate section having an extended outer shape section and having a display area configured to display an image; a plurality of lead wires that extend along the extended outer shape section to the display area; and a circuit section that is placed so that the lead wires are interposed between the display area and the circuit section and that is composed of a plurality of unit circuits arranged along the extended outer shape section, wherein the plurality of unit circuits include a unit circuit having an extension section that extends away from the signal supply section so as to be interposed between a unit circuit that is adjacent to the unit circuit on a side opposite to the signal supply section and the lead wires.