GOA Circuit Segmentation for Narrow Bezel Displays
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Solution Overview
Problem
Existing GOA circuits require both all-on and all-off modules at both sides of the display panel, leading to a complex structure, increased area, and widened bezels, making it difficult to achieve a display panel with a narrow bezel.
Innovation Solution
A GOA circuit design where one GOA sub-circuit includes only all-on modules and the other sub-circuit includes only all-off modules, with both sub-circuits jointly driving a scan line, reducing the number of modules and area occupied while maintaining all-gate-on and all-gate-off functions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If both all-on modules and all-off modules are deployed at both sides of the display panel, then the all-gate-on and all-gate-off functions are achieved, but the structure becomes complicated and the occupied area increases
Solution Approach 1:
The GOA circuit is divided into two separate sub-circuits: a first GOA sub-circuit containing only all-on modules and a second GOA sub-circuit containing only all-off modules. This segmentation allows each sub-circuit to be optimized independently, reducing the complexity within each unit while maintaining the complete functionality when both sub-circuits work together.
Solution Approach 2:
The all-on modules and all-off modules are extracted and separated into different sub-circuits. By taking out the all-off modules from the first GOA sub-circuit and placing them only in the second sub-circuit, the patent simplifies the structure of the first sub-circuit while ensuring the second sub-circuit handles the all-off functionality for both sides of the display panel.
2Reliability
If both all-on modules and all-off modules are deployed at both sides of the display panel, then the all-gate-on and all-gate-off functions are achieved, but the occupied area increases and bezel width enlarges
Solution Approach 1:
By segmenting the GOA circuit into two specialized sub-circuits, the patent reduces the area required for each sub-circuit. The first sub-circuit only needs to accommodate all-on modules while the second sub-circuit accommodates all-off modules, eliminating redundant module placements and reducing the total occupied area on the display panel.
Solution Approach 2:
The patent merges the functionality of handling all-off operations for both sides of the display panel into a single second GOA sub-circuit. This combining of functions reduces the total number of modules needed and consolidates the circuit layout, thereby reducing the occupied area and enabling narrower bezels.
3Reliability
If both all-on modules and all-off modules are deployed at both sides of the display panel, then the all-gate-on and all-gate-off functions are achieved, but the bezel width is enlarged
Solution Approach 1:
The segmentation of GOA circuit functionality into specialized sub-circuits reduces the horizontal space required for circuit placement. By having the first sub-circuit handle all-on operations and the second sub-circuit handle all-off operations, the overall circuit width is reduced, enabling narrower bezel design while maintaining complete functionality.
Solution Approach 2:
The patent optimizes the spatial arrangement by organizing modules in a vertical stacking configuration rather than horizontal placement. The first and second GOA sub-circuits are arranged to utilize vertical space on the display panel, which reduces the horizontal dimension (bezel width) while maintaining all required functions.
Data Source
AI summary
The present application provides a GOA circuit and a display panel. In the GOA circuit, one of two GOA units of a same stage in GOA sub circuits at left and right sides of the display panel is deployed only with an all-on module and the other one of the two GOA units is deployed only with an all-off module. In such a way, both the number of the all-on modules and the number of the all-off modules required in the GOA unit are halved, thereby reducing the area occupied by the GOA circuit. It is beneficial for realizing a display panel with a narrow bezel.