Flexible Display Data Link Short Circuit Prevention
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Solution Overview
Problem
Flexible display apparatuses with curved portions are prone to short circuits due to residual metal films between data link lines, especially in narrow bezel designs where spacing is reduced, leading to potential electrical failures.
Innovation Solution
A display apparatus structure featuring a substrate with a display area and a non-display area, including gate lines, data lines, a gate driver, and pad parts, with a gate insulating layer, interlayer insulating layers, and a protective layer that exposes the interlayer insulating layer over data link lines to prevent short circuits by removing residual metal films during the formation of gate voltage supply lines.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If gate link lines are disposed on data link lines in the curved portion to reduce spacing and achieve narrow bezel, then the display area can be increased and volume reduced, but residual metal films may remain between data link lines causing short circuits
Solution Approach 1:
The patent divides the non-display area into distinct functional zones: a first non-display area for data link lines and a second non-display area for gate link lines. This spatial segmentation prevents the overlapping of conductive lines, eliminating the risk of short circuits while maintaining the narrow bezel design and maximizing display area.
2Volume of moving object
If spacing between data link lines is reduced to achieve narrow bezel, then volume and weight are reduced, but residual metal films cause short circuits between closely spaced lines
Solution Approach 1:
By segmenting the routing paths of data link lines and gate link lines into separate non-display areas, the patent enables closer spacing of lines within each zone without the risk of inter-line short circuits. This achieves compact device volume while maintaining electrical reliability.
3Device complexity
If gate link lines pass over data link lines in the curved portion, then wiring complexity is reduced, but metal residual films between lines cause short circuits
Solution Approach 1:
Instead of allowing gate link lines to pass over data link lines, the patent segments the wiring into separate horizontal zones. Data link lines are confined to the first non-display area while gate link lines are confined to the second non-display area, eliminating vertical crossings and the associated short circuit risks while maintaining manageable wiring complexity.
4Area of stationary object
If data link lines are disposed in the non-display area corresponding to the curved portion, then display area is maximized, but the spacing between lines is reduced increasing short circuit risk
Solution Approach 1:
The patent segments the non-display area to provide dedicated space for data link lines in the first non-display area and gate link lines in the second non-display area. This segmentation ensures adequate spacing between similar conductive lines, simplifying manufacturing precision requirements while maximizing display area.
Data Source
AI summary
A display apparatus includes a substrate including a display area, in which gate lines and data lines are disposed, and a non-display area, in which a gate driver and a pad part are disposed. A gate insulating layer is on the substrate. Data link lines are on the gate insulating layer to connect data pads of the pad part to the data lines, and an interlayer insulating layer is on the data link lines. Gate voltage supply lines are on the interlayer insulating layer to connect the gate driver with the gate lines. A protective layer is on the interlayer insulating layer to cover the gate voltage supply lines, the protective layer including an opening for exposing the interlayer insulating layer of an area overlapping the data link lines.