No abstract

This paper introduces and demonstrates a display that incorporates an organic image sensor formed in the same pixel as organic light-emitting diodes through side-by-side patterning. The potential applications of this display include touch sensing, scanning, and fingerprint identification at any location on the entire display screen, without the necessity of an external module.This is an open access article under the terms of the Creative Commons Attribution-NonCommercial License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited and is not used for commercial purposes.

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.

In our newly developed display with low power consumption, circuits for a reflective liquid crystal display (LCD) and an organic light-emitting diode (OLED) display are formed in the same field-effect transistor layer to control these two types of display devices. This display has high visibility in both a bright and a dark environment with use of the reflective LCD and the OLED display, respectively.

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.