We have developed a highly efficient top-emitting white OLED by employing a stable reflective anode structure and a p-doped buffer layer. Furthermore, combining the white OLED with color filters, we succeeded in fabricating a prototype of a highdefinition AMOLED display having highly reliable OS-FETs as the backplane.
In order to reduce eye strain, a driving method for reducing flickers of liquid crystal display (LCD) is devised. For this driving, an oxide semiconductor (OS) is used in a backplane, liquid crystal and alignment layer materials are optimized, and a fringe field switching (FFS) mode with a structurally formed storage capacitor is used. This work reveals that suitable usages of positive and negative liquid crystals differ from each other according to their characteristics. This work also describes an OS‐LCD with a touch sensor we fabricated for mobile devices, which proves the possibility of reducing‐eye‐strain technology (REST) with reduced flickers.
We successfully prototyped a 3.4-inch QHD PDLCD panel integrally including data and scan drivers of oxide semiconductor TFTs and capable of displaying still images at 0.2 fps, which can be adopted to electronic paper displays. This panel can display both still images and moving images and reduce power consumption.
We fabricated a 6.05-inch reflective liquid crystal display (LCD) using a CAAC-OS for a driving transistor. We achieved low frequency driving at 1/60 fps or lower and flicker reduction. With our LCD, eye strain can be reduced more than with an electrophoretic display.
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