GOA Circuit Overlapping Cycles for High-Frequency Display Writing
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Solution Overview
Problem
Traditional display panels fail to meet the writing requirements for high-frequency and ultra-high-frequency drive displays due to limitations in data signal writing capabilities.
Innovation Solution
The display panel incorporates a GOA circuit with cascaded GOA units and a multiplexing circuit, where the GOA units' working cycles overlap, providing additional cycles for data signal writing, and includes specific transistor configurations to enhance data signal transmission and processing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional display panel structure is used, then device complexity is low, but data signal writing capability cannot meet high-frequency drive requirements
Solution Approach 1:
The display panel is divided into multiple independent GOA units (first GOA unit, second GOA unit, third GOA unit, etc.) that can operate independently with different working cycles. This segmentation allows each unit to handle specific data signal writing tasks, thereby improving overall data signal writing capability while maintaining manageable system complexity through modular design.
Solution Approach 2:
Adjacent GOA units are configured with overlapping working cycles where the first GOA unit's working cycle overlaps with the second GOA unit's working cycle, and the second overlaps with the third, creating a dynamic pipeline structure. This dynamic operation enables continuous data signal processing and writing, significantly enhancing productivity for high-frequency drive displays.
2Speed
If high-frequency drive display is implemented, then display refresh rate increases, but data signal writing requirements cannot be met
Solution Approach 1:
Each GOA unit operates with a defined working cycle that includes specific phases for data signal reception, processing, and writing. The periodic nature of these cycles, combined with overlapping between adjacent units, creates a rhythmic flow of data signal processing that supports high refresh rates while ensuring reliable data writing at each stage.
Solution Approach 2:
The first GOA unit receives and prepares data signals in advance during its working cycle, performing preliminary processing before passing to the second GOA unit. This preliminary action allows subsequent units to immediately continue processing without waiting, thereby supporting high display refresh rates through preemptive data signal preparation.
3Productivity
If multiple GOA units with overlapping working cycles are used, then data signal writing capability improves, but device complexity increases
Solution Approach 1:
Multiple GOA units are merged into a unified GOA circuit structure where adjacent units share overlapping working cycles and coordinated operation. This merging approach consolidates the functionality of multiple units into an integrated system, improving data signal writing capability while managing complexity through unified control and shared operational framework.
Data Source
AI summary
The present application discloses a display panel and a display device. The display panel includes a GOA circuit, a source driving chip, a multiplexing circuit, and a plurality of pixels distributed in an array; through improvement of the cascade connection between GOA units and the at least partially overlapping between working cycles of adjacent ones of the GOA units, more working cycles can be provided for the writing of the data signals to meet the writing requirements of the data signals during high-frequency drive display or ultra-high frequency drive display.