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Large high-density monolithic XY-addressable arrays for flat-panel LED displays

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3 Author(s)
Frescura, B.L. ; Hewlett-Packard Laboratories, Palo Alto, CA ; Luechinger, H. ; Bittmann, C.A.

A large-area XY -addressable matrix display has been designed and fabricated. This display consists of 4 tiles, each a ½ in × ½ in array of 30 × 36 LED's, end-stacked to form a continuous dot-matrix display, ½ in × 2 in of 30 × 144 LED's. This paper discusses the design considerations, the fabrication technique used, and the yields experienced in fabricating these displays. The yield of perfect tiles was 5 percent. Using as an acceptance criteria, tiles with no more than 4 LED's either out or dim and using repair techniques described herein, yields of 54 percent have been achieved.

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Electron Devices, IEEE Transactions on  (Volume:24 ,  Issue: 7 )