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논문 기본 정보

자료유형
학술저널
저자정보
Diethelm, Matthias (Fluxim AG) Penninck, Lieven (Fluxim AG) Altazin, Stephane (Fluxim AG) Hiestand, Roman (Fluxim AG) Kirsch, Christoph (Zurich University of Applied Sciences, Institute of Computational Physics) Ruhstaller, Beat (Fluxim AG)
저널정보
한국정보디스플레이학회 Journal of information display Journal of information display 제19권 제2호
발행연도
2018.1
수록면
61 - 69 (9page)

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The resolution of organic light-emitting diode (OLED) displays is increasing steadily as these displays are adopted for mobile and virtual reality (VR) devices. This leads to a stronger pixel crosstalk effect, where the neighbors of active pixels unintentionally emit light due to a lateral electric current between the pixels. Recently, the crosstalk was quantified by measuring the current flowing through the common hole transport layer between the neighboring pixels and comparing it to the current through the active pixel diode [S.-K. Kwon, K.-S. Kim, H.-C. Choi and J. H. Kwon, presented at the International Meeting on Information Display, Jeju, South Korea, 2016]. The measurements showed that the crosstalk is more crucial for low light levels. In such cases, the intended and parasitic currents are similar. The simulations performed in this study validated these measurement results. By simulations, we quantify the crosstalk current through the diode. The luminous intensity can be calculated with the measured current efficiency of the diodes. For low light levels, the unintended luminance can reach up to 40% of the intended luminance. The luminance due to pixel crosstalk is perceivable by humans. This effect should be considered for OLED displays with resolutions higher than 300 PPI.

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