In-Panel Gate Driver Repair for Seamless Multi-Screen Displays
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Solution Overview
Problem
Display apparatuses with gate-in panel (GIP) structures can experience abnormal operation or non-driving due to manufacturing errors, and multi-screen display systems suffer from image discontinuity due to bezel seams, reducing viewer immersion.
Innovation Solution
A display apparatus with a gate driving circuit that includes stage circuit units and a circuit repair portion to repair abnormal stage circuits, and a multi-screen display apparatus with a bezel-free design to minimize image discontinuity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a gate driving circuit is embedded into the display panel during TFT manufacturing (GIP structure), then the manufacturing cost is decreased and bezel width is reduced, but the gate driving circuit may abnormally operate or fail to drive due to manufacturing errors
Solution Approach 1:
The patent applies preliminary action by incorporating a repair portion into the gate driving circuit during the same manufacturing process. This repair portion includes repair transistors and repair lines that are pre-configured to detect and correct manufacturing defects before the product is deployed, thus preventing future failures while maintaining the cost benefits of the GIP structure.
Solution Approach 2:
The patent implements beforehand cushioning by building in redundancy through the repair portion. The repair transistors and repair lines act as a protective buffer that can compensate for manufacturing errors, ensuring continuous operation even when defects occur during the embedding process.
2Area of moving object
If multiple display apparatuses are arranged in a lattice type to create a multi-screen display, then a large screen is implemented, but boundary portions such as seams are formed causing image discontinuity
Solution Approach 1:
The patent applies the taking out principle by removing the bezel structure from the display apparatus. By eliminating the physical border between display modules, the seams that cause image discontinuity in multi-screen arrangements are removed, allowing multiple displays to be arranged in a lattice configuration while maintaining visual continuity across the entire display area.
3Device complexity
If the gate driving circuit is manufactured simultaneously with TFT pixels, then manufacturing complexity is reduced, but manufacturing precision may be compromised due to errors or particles
Solution Approach 1:
The patent applies preliminary action by pre-configuring the repair portion alongside the gate driving circuit during the same manufacturing process. This allows the system to maintain simple device architecture while compensating for potential precision issues through built-in repair capabilities that are activated only when needed.
Data Source
AI summary
Discussed is a display apparatus including a substrate including a display portion, a plurality of pixels connected to a gate line and a data line disposed in the display portion, and a gate driving circuit disposed in the display portion to drive the gate line. The gate driving circuit includes a stage circuit unit including a plurality of stage circuits respectively disposed in a plurality of division regions defined in the display portion, and a circuit repair portion configured to repair at least one of the plurality of stage circuits and including a plurality of repair patterns. Further, at least one of the plurality of repair patterns is configured to be electrically disconnected from the at least one of the plurality of stage circuits.