GOA Circuit Reset Module for Foldable Display Panel
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Solution Overview
Problem
Flexible display panels suffer damage to the gate driver on array (GOA) circuit during folding, leading to pixel deformation, color shift, and reduced lifespan, which affects the display quality and increases losses in the folding area.
Innovation Solution
A GOA circuit with cascaded units and a reset module that shuts down pixels in the folding area during folding, using a switch module to connect the last cascaded GOA unit in the first active area to the first cascaded GOA unit in the second active area, allowing for controlled activation and deactivation of pixels to prevent damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the foldable display panel is folded, then the display can be compacted and transported, but the GOA circuit in the folding area suffers damage and pixel deformation occurs
Solution Approach 1:
The patent applies preliminary action by shutting down pixels in the folding area before the folding operation occurs. The reset module receives a reset signal and activates before folding, pulling down the gate driving signal voltage to turn off pixels in advance, preventing damage to the GOA circuit and pixel deformation during the folding process
Solution Approach 2:
The patent applies preliminary anti-action by using the reset module to counteract the harmful effects of folding before they occur. The reset signal activates the reset module to pull down gate driving signals and shut down pixels in the folding area, creating a protective state that prevents the damage that would otherwise occur during folding
2Productivity
If pixels in the folding area remain active during folding, then continuous display function is maintained, but pixel deformation and color shift occur reducing display quality
Solution Approach 1:
The reset module shuts down pixels in the folding area before folding occurs by pulling down the gate driving signal voltage, preventing pixel deformation and color shift that would degrade display quality, while allowing display to resume quickly after folding
3Productivity
If the GOA circuit operates continuously during folding, then no display interruption occurs, but energy consumption increases and damage risk rises
Solution Approach 1:
The patent implements periodic action by temporarily shutting down pixels in the folding area during the folding process through the reset module, then resuming normal operation after folding. This periodic on-off cycle reduces energy consumption during the folding operation while maintaining overall display functionality
Solution Approach 2:
The reset module is activated before folding to shut down pixels in advance, preventing damage to the GOA circuit and reducing energy consumption during the vulnerable folding period, while allowing quick resumption of display after folding
Data Source
AI summary
The invention provides a GOA circuit and driving method for foldable display panel and a foldable display panel. The GOA circuit comprises a plurality of cascaded GOA units and a switch module, the GOA units in folding area comprising a reset module; the reset module being for controlling GOA units in folding area to shut down pixels; the switch module having two ends connected respectively to last cascaded GOA unit in first active area and first cascaded GOA unit in second active area, for connecting an output end of the last cascaded GOA unit in the first active area to an input end of the first cascaded GOA unit in the second active area during folding, by using the last cascaded GOA unit in the first active area to output a gate control signal to control activation of the first cascaded GOA unit in the second active area.