[Paper] Development of an External Compensation Technique for Burn-in Degradation in a 4K Flexible AMOLED Display

Abstract

In ultra-high-definition active-matrix organic light-emitting diode (AMOLED) displays, the external compensation technique improves burn-in and uneven luminescence by varying the current through the driving thin-film transistors (TFTs). However, sensing the current through the driving TFT for every pixel is time-consuming because of the increased number of scanning lines. Hence, in this study, we propose a method to reduce the number of measurements and shorten the measurement time by interpolating from the current measurement data for surrounding pixels. We show that this method can be applied to a 4K flexible AMOLED display and can satisfactorily compensate degradation due to burn-in.

[Paper] Bendable Electro-Acoustic Transducer Fabricated Utilizing Frequency Dispersion of Elastic Modulus

“…At last, sensory evaluation was conducted by attaching the viscoelastic-matrix sample to the back of a 30-inch 4K flexible OLED display [2] .…”

“…On the other hand, flexible displays fabricated on plastic films are attracting attention as potential replacements for the hard glass substrates. For example, the 30-inch 4K organic light-emitting diode (OLED) flexible display can be rolled up with a curvature radius of 2 cm [2] . In this way, flexible displays are expected to create new viewing styles due to their excellent features such as weight reduction, improved storability, and improved impact resistance.…”