Display Device Diagonal Gate Lines Single-Side Driver Bezel Reduction
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Solution Overview
Problem
The existing display device architecture often requires a larger bezel area due to the separate placement of gate and data drivers along different sides of the display panel, which limits the miniaturization of display devices and increases the area required for driver connections.
Innovation Solution
The display device incorporates a substrate with diagonal gate lines extending between sides, where redundancy lines connect to the gate driver, allowing for a single-side driving structure and direct contact between redundancy and gate pad parts to reduce contact resistance and voltage drop, thereby minimizing the bezel area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If gate driver and data driver are placed along different sides of the display panel, then driver connection is simplified, but bezel area increases
Solution Approach 1:
The patent merges the gate driver and data driver into a single integrated driver IC, placing both drivers along one side of the display panel. This consolidation eliminates the need for separate driver placements on different sides, thereby reducing the bezel area while maintaining simplified driver connection structure.
2Area of stationary object
If diagonal gate lines are used with single-side driving structure, then bezel area is reduced, but contact resistance and voltage drop increase
Solution Approach 1:
The patent introduces redundancy gate lines that are pre-configured alongside the normal gate lines. These redundancy lines are prepared in advance and can be activated through insulation layer openings to provide alternative conduction paths, thereby preliminarily addressing potential contact resistance and voltage drop issues before they affect display performance.
Solution Approach 2:
The patent changes the gate line configuration from traditional orthogonal arrangements to diagonal gate lines extending from corner to corner. This parameter change in line orientation and routing path optimizes the conduction path length and distribution, reducing overall contact resistance and voltage drop while enabling the single-side driving structure.
3Reliability
If redundancy lines are added to reduce voltage drop, then reliability improves, but device complexity increases
Solution Approach 1:
The redundancy gate lines serve multiple functions: they act as backup conduction paths during normal operation to reduce voltage drop, and can be selectively activated through insulation layer openings when contact issues occur. This multi-functionality allows the same structure to provide both reliability improvement and fault tolerance without requiring entirely separate systems.
Data Source
AI summary
A display device including: a substrate including first and second sides which face and are parallel to each other, and third and fourth sides which are orthogonal to the first and second sides, and face each other; a gate driver and a data driver disposed along the first side of the substrate; a first diagonal gate line, which is extended in a first direction crossing directions in which the first to fourth sides are extended, and has both ends heading the second and fourth sides of the substrate; a gate pad part extended from one end of the first diagonal gate line adjacent to the second side; an insulation layer including an opening for exposing at least a partial area of the gate pad part and formed on the substrate; a redundancy line extended in a second direction parallel to a direction in which the third and fourth sides are extended, and connected to the gate driver; and a redundancy pad part extended from the redundancy line to be in direct contact with the gate pad part exposed through the opening.