Gate Bypass Auxiliary Lines for Narrow-Bezel Display Panels
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Solution Overview
Problem
The limitation of reducing the non-display area width in display devices is constrained by the arrangement of the gate driving circuit, which is typically disposed in a portion of the non-display area facing one side of the display area, and this configuration makes it difficult to stably supply signals to the gate lines as the display area expands.
Innovation Solution
The display device incorporates gate bypass auxiliary lines and data supply lines that allow the gate driving circuit to be disposed in various portions of the non-display area, including those facing sides of the display area, thereby stabilizing signal supply and reducing the non-display area width.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the gate driving circuit is disposed in a portion of the non-display area facing one side of the display area, then the structure is simpler, but the non-display area width cannot be reduced and signal supply stability deteriorates as display area expands
Solution Approach 1:
The gate driving circuit is divided into multiple stages arranged in the first direction (row direction), with each stage connected to corresponding gate lines. This segmentation allows the circuit to be distributed across the non-display area, improving signal supply stability to the central portion of the display area while maintaining structural simplicity through modular design.
Solution Approach 2:
The stages of the gate driving circuit are arranged in the first direction (horizontal arrangement) rather than the conventional vertical arrangement along one side. This dimensional change in circuit layout enables better signal distribution across the expanded display area while maintaining a compact non-display area width.
2Measurement precision
If the display area width in the first direction increases, then the display resolution is enhanced, but the central portion moves further from the gate driving circuit making signal supply unstable
Solution Approach 1:
The gate driving circuit is segmented into multiple stages distributed along the first direction, with each stage positioned to serve specific regions of the display area. This segmentation ensures that even as the display area expands, no central portion becomes too distant from its corresponding driving stage, maintaining signal stability while supporting higher resolution.
3Area of stationary object
If the non-display area width is reduced, then the overall device size is minimized, but the gate driving circuit cannot be properly arranged
Solution Approach 1:
The gate driving circuit stages are arranged horizontally in the first direction rather than vertically along the side, utilizing the width of the non-display area more efficiently. This dimensional rearrangement allows the circuit to be properly configured within a reduced non-display area width while maintaining manufacturability.
Data Source
AI summary
A display device includes: a substrate including a display area and a non-display area; a circuit layer disposed on the substrate; and an element layer disposed on the circuit layer. The circuit layer includes light emitting pixel drivers; gate lines extending in a first direction, and arranged in a second direction in the display area; a gate driving circuit including stages disposed in a portion of the non-display area, arranged in the first direction, and electrically connected to the gate lines; data lines extending in the second direction; first auxiliary lines extending in the first direction; and second auxiliary lines extending in the second direction and adjacent to the data lines in the first direction. The second auxiliary lines include gate bypass auxiliary lines electrically connected between the gate lines and the stages.