Dual-Sided GOA Circuit for Display Panel Signal Reliability
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional gate-driver on array (GOA) circuits in LCDs face issues with panel bezel size and production costs, and when an abnormal signal is output by a GOA unit, it renders subsequent units ineffective, leading to circuit failure.
Innovation Solution
A driving circuit and display panel design that incorporates a dual-sided GOA unit configuration with primary and secondary scanning lines, where each GOA unit is cascaded with another unit on the same side, allowing signals to be transmitted from a normal side to an abnormal side to prevent cascading failures, and includes charging and pull-up/pull-down modules to manage pixel voltage levels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional single-side GOA unit configuration is used, then the circuit structure is simple, but once an abnormal signal is output by a GOA unit, all subsequent GOA units become ineffective
Solution Approach 1:
The patent divides the GOA circuit into two independent signal transmission paths (first side and second side), allowing signals to be transmitted through alternative routes when one path encounters abnormalities. This segmentation ensures that a failure in one GOA unit does not propagate through the entire circuit, thereby improving reliability while maintaining manageable complexity through modular design.
Solution Approach 2:
The patent changes the signal transmission parameter from single-side to dual-side configuration. By implementing GOA units on both sides of the scanning line set and enabling bidirectional signal transmission, the system transforms a unidirectional vulnerable path into a redundant bidirectional system, improving fault tolerance and signal transmission reliability.
2Reliability
If a dual-sided GOA unit configuration with cascaded connections is implemented, then signal transmission reliability is enhanced, but the width of the GOA zone increases
Solution Approach 1:
The patent merges the functions of multiple GOA units into shared circuit structures. The dual-sided GOA units share common scanning lines and control signals, allowing the system to achieve redundant signal transmission without proportionally increasing the overall circuit width. This merging approach reduces the incremental width penalty while maintaining reliability benefits.
Solution Approach 2:
The patent transitions from a single-dimensional linear GOA unit arrangement to a two-dimensional dual-sided configuration. By utilizing both sides of the scanning line set simultaneously, the system achieves improved reliability through spatial redundancy without linearly increasing the horizontal width of the GOA zone, effectively using vertical/dual-sided space to mitigate width expansion.
3Productivity
If the nth stage GOA unit is cascaded with the (n+k)th stage GOA unit on the same side, then signal transmission efficiency is improved, but the circuit becomes more complex
Solution Approach 1:
The patent implements preliminary cascaded connections between the nth stage and (n+k)th stage GOA units on the same side, establishing advance signal transmission pathways. This preliminary structuring allows signals to skip intermediate stages and reach their destinations more directly, improving transmission efficiency while the regular cascaded pattern keeps the added complexity manageable and predictable.
Data Source
AI summary
The present disclosure proposes a driving circuit. The driving circuit includes gate-driver on array (GOA) unit sets at n stages, an nth stage GOA unit set corresponding to an nth row of primary scanning line and an (n-k)th row of secondary scanning line. The GOA unit set includes two GOA units arranged at the corresponding sides of the scanning line set. The nth stage GOA unit arranged at a first side where the scanning line set is arranged is connected to the nth stage GOA unit arranged at a second side where the scanning line set is arranged.