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New Pixel Design on Emitting Area for High Resolution Active-Matrix Organic Light-Emitting Diode Displays

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8 Author(s)
Soon-Kwang Hong ; OLED Dev. Dept., LG Display Co. Ltd., Gumi, South Korea ; Jea-Ho Sim ; In-Gyo Seo ; Keun-Choul Kim
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We propose new pixel design on emitting area and corresponding shadow mask design for high resolution active-matrix organic light-emitting diodes (AMOLEDs) to overcome the limitation of conventional shadow mask process. The proposed scheme has the extended emitting area into adjacent sub-pixel and gives flexibility for manufacturing shadow mask with quarter resolution compared with conventional requirement. The proposed scheme can use normal pixel driving circuit; however, anode electrode in each sub-pixel covers adjacent pixels to extend its own emitting aperture area for high resolution AMOLEDs. We have successfully implemented this scheme in a 4.3-in-sized WVGA (854 × RGB × 480) AMOLED using p-type advanced-solid phase crystallization (A-SPC) backplane technology and top emissive organic light-emitting diode (OLED) device structure and evaluated key performance characteristics.

Published in:

Display Technology, Journal of  (Volume:6 ,  Issue: 12 )

Date of Publication:

Dec. 2010

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