Display Scan-Line Backup Switching for Driver Failure Tolerance
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Solution Overview
Problem
In multi-panel displays, when a driving circuit on one side malfunctions, it fails to properly control the electronic elements (e.g., pixels) in the corresponding region, causing visual disturbances for the user, and the electronic elements (e.g., pixels) in the corresponding active region, thus causing visual disturbances for the user.
Innovation Solution
The electronic device includes a substrate with an active area and a peripheral area, featuring a first scan driving element and a first scan line connected to a first switch element. The first scan driving element provides a first scan signal under a first condition, and the first switch element is turned on to transmit a second scan signal under a second condition, ensuring that even if one driving element fails, the other can continue to operate and transmit necessary signals to maintain display functionality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a driving circuit is located on one side to control electronic elements in the corresponding active region, then the device complexity is reduced, but the reliability deteriorates when the driving circuit malfunctions
Solution Approach 1:
The display device is divided into first and second regions with separate driving circuits (first scan driving element and second scan driving element) positioned on opposite sides. Each driving circuit independently controls its corresponding region, allowing the other region to take over if one driving circuit fails, thus improving reliability while maintaining manageable complexity through functional segmentation.
Solution Approach 2:
The patent changes the operational parameters of the driving circuits by enabling bidirectional signal transmission. The first scan driving element can output scan signals to the first scan line, and the second scan driving element can output scan signals to the second scan line. Additionally, switch elements can redirect scan signals between opposite sides, allowing dynamic parameter changes in signal routing to maintain display functionality under failure conditions.
2Reliability
If driving circuits are positioned on opposite sides to improve reliability, then the device complexity increases
Solution Approach 1:
Each driving circuit is designed with multi-functionality: the first scan driving element can drive the first scan line directly, receive scan signals from the second scan driving element, and control switch elements to redirect signals. The second scan driving element has analogous capabilities. This universal design allows either driving circuit to compensate for the other's failure, improving reliability while the integrated multi-functional design prevents excessive complexity increase.
Solution Approach 2:
Switch elements are introduced as intermediary components between the driving circuits and scan lines. These switch elements mediate signal routing, allowing scan signals to be redirected from one side to the other when needed. This intermediary mechanism enables flexible signal paths without requiring complete redesign of the driving circuit architecture, thus managing complexity while achieving reliability improvement.
3Reliability
If a driving circuit malfunctions, then the reliability deteriorates, but adding backup signal transmission capability increases device complexity
Solution Approach 1:
The patent merges the primary and backup signal transmission paths into a unified architecture. The first and second scan driving elements share common functional capabilities, and the scan lines are designed to accept signals from either side. Switch elements are integrated into the existing signal paths rather than adding separate backup systems. This merging approach provides redundancy without duplicating entire signal transmission systems, thus improving reliability while controlling complexity.
Data Source
AI summary
An electronic device has a substrate, a first scan driving element, a first scan line, and a first switch element. The substrate has an active area and a peripheral area adjacent to the active area. The first scan driving element is arranged in a first region of the peripheral area. The first scan line is electrically connected to the first scan driving element. The first switch element is arranged in the peripheral area and electrically connected to the first scan line. When the electronic device is under a first condition, the first scan driving element provides a first scan signal to the first scan line. When the electronic device is under a second condition, the first switch element is turned on to transmit a second scan signal to the first scan line.