Embedded Gate Driver in Pixels for Zero-Bezel Reliability
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Solution Overview
Problem
Existing display devices using LEDs face increased defect rates due to the process of connecting elements on the upper surface with drivers on the lower surface, and they struggle to achieve a zero-bezel design with traditional pixel and redundancy pixel configurations.
Innovation Solution
A display device with a gate driver integrated into the upper surface of the display panel, allowing both main and redundancy pixels to be driven, eliminating the need for side connections and reducing process defects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If drivers are located on the lower surface of the display panel, then zero-bezel display is achieved, but the defect rate increases due to connection process
Solution Approach 1:
The gate driver is moved from the lower surface to the upper surface of the display panel, changing its spatial dimension. This allows the driver to be positioned in the same plane as the pixels, eliminating the need for side connections through the panel thickness and thereby reducing connection defects while maintaining zero-bezel design
2Reliability
If gate driver is integrated in the unit pixel, then connection process defects are reduced, but device complexity increases
Solution Approach 1:
The gate driver circuit is merged with the pixel structure by positioning it within the same unit pixel region. This integration combines previously separate components (driver and pixel) into a unified structure, reducing the need for external connections while managing complexity through compact co-location
Data Source
AI summary
A display device according to the present invention comprises: a display panel in which a plurality of unit pixels are arranged; and a gate driver which is disposed at the upper surface of the display panel and is embedded in the plurality of unit pixels, wherein each of the plurality of unit pixels comprises a main pixel and a sub-pixel, and the gate driver supplies a gate voltage to the main pixel and the sub-pixel. Accordingly, in the present invention, even when the main pixel is defective, the sub-pixel can emit light in place of the main pixel, and thus the display device has enhanced reliability against defects.