Semitransparent passive matrix organic light-emitting displays |
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Authors: | Li-Wei Tan Chan-Choy Chum Kian-Soo Ong Xiaotao Hao Eric C-W Ou Furong Zhu |
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Affiliation: | (1) Institute of Materials Research and Engineering, No.3 Research Link, Singapore, 117602, Singapore |
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Abstract: | There has been an increased interest in developing top emission organic light-emitting diodes (OLEDs) that are able to emit
light from both sides of the OLED display. One important application of the top emission device structure is to achieve monolithic
integration of a top-emitting OLED on a polycrystalline or amorphous silicon thin film transistors used in active matrix displays.
A high performance dual-sided top-emitting polymer OLED developed in this work exhibited a total luminous efficiency of ∼5.0 cd/A
at 4.0 V, which is comparable to that observed for a control device having bottom emission structure. A laser ablation technology
was developed to define the pixels. The cathode separation was achieved without using the conventional reverse trapezoid type
separators that are normally used for pixellated OLED displays. A prototype of semitransparent polymer light-emitting passive
matrix display has a matrix of 100 × 32 with a display area of 32.25 mm by 11.15 mm. |
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