Abstract
We have developed a 7.5 inch micro LED device based on LTPS, the resolution is 320RGB × 240. The VSR driving circuits, demux circuits, ESD circuits were well‐distributed in AA combining with side bonding process, finally, we produced a 0mm border micro LED device. The VSR signal, PVDD and PVEE signal were well placed in panel in order to reduce the mura problem. We saved some extra space for edging to narrow border to negative value by adjusting AA circumference devices. Then the micro LED panel can be Seamless splicing while the pixel pitch seems continuous in spite of the Seam. Due to seamless splicing and the borderless features, we can assemble various size and resolution devices. The micro LED size is 85µm × 150µm and the luminance can reach beyond 600nit.
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