Tiled Display Gate Driver Integration for Reduced Seam Visibility
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Solution Overview
Problem
Large-sized display devices with light emitting elements face increased defect rates due to the number of pixels, leading to reduced productivity and reliability, and the seams between tiled display devices cause a sense of disconnection in images, detracting from immersion.
Innovation Solution
A tiled display device design that minimizes the non-display area by integrating a gate driver and gate input line within the display area, ensuring the coupling area between devices is small enough to be unnoticeable, thus reducing the seam visibility and enhancing image immersion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If display devices are tiled to achieve large screen size, then the defect rate decreases and productivity improves, but boundary portions create a sense of disconnection reducing image immersion
Solution Approach 1:
The gate driver is extracted from the non-display area and relocated to the display area, specifically positioned in the pixel peripheral area. This extraction eliminates the need for a separate non-display area, thereby reducing the boundary portion between tiled display devices and removing the sense of disconnection that harms image immersion.
2Object-affected harmful factors
If non-display area is reduced to minimize seams, then image immersion improves, but space for driver circuits becomes limited
Solution Approach 1:
The gate driver is merged with the pixel circuit by positioning it within the pixel peripheral area on the same substrate. This merging allows the driver circuit to share the display area with the pixel circuits, eliminating the need for a separate non-display area and thereby minimizing seam visibility while accommodating driver circuit requirements.
Solution Approach 2:
The gate driver is positioned in the pixel peripheral area, utilizing the spatial dimension around the pixel circuit rather than occupying the central pixel area or requiring a separate non-display area. This dimensional repositioning allows efficient space utilization within the display area.
3Ease of manufacture
If gate driver is positioned in non-display area, then pixel circuit layout is simplified, but non-display area increases creating visible seams
Solution Approach 1:
The gate driver is extracted from the non-display area and relocated to the display area's pixel peripheral area. This extraction eliminates the need for a separate non-display area, thereby reducing the boundary portion between tiled display devices and removing the sense of disconnection that harms image immersion.
Data Source
AI summary
A display device includes a display area including pixels, a non-display area adjacent to the display area, and a display driver electrically connected to the non-display area. The display area includes a data line that supplies a data voltage received from the display driver to the pixel, the data line extending in a first direction, a gate input line electrically connected to the display driver and extending in the first direction, a gate driver electrically connected to the gate input line, and a gate line electrically connected to the gate driver and extending in a second direction intersecting the first direction.