Development of a high-resolution RGBW flexible display using a white organic light-emitting diode with microcavity structure and that of a side-roll touch panel

Abstract

In this study, white organic electroluminescent devices with microcavity structures were developed. A flexible high‐resolution active‐matrix organic light‐emitting diode display with low power consumption using red, green, blue, and white sub‐pixels formed by a color‐filter method was fabricated. In addition, a side‐roll touch display was developed in combination with a capacitive flexible touch screen.

Highly Efficient, Red Delayed Fluorescent Emitters with Exothermic Reverse Intersystem Crossing via Hot Excited Triplet States

“…Organic light-emitting diodes (OLEDs) have achieved great progress in the past 3 decades because of the potential applications in flat-panel display and solid-state lighting. − In OLED devices, spin-uncorrelated hole and electron carriers are injected from the anode and cathode, respectively; then, they recombine to form excitons with either spin-singlet or -triplet character in a ratio of 1:3 following the spin statistics. , Thus, to develop high-efficiency OLEDs, it is critical to harness both the singlet and triplet excitons for light emission . At present, both singlet harvesting mechanisms (e.g., thermally activated delayed fluorescence, TADF) − and triplet harvesting mechanisms (e.g., phosphorescence) − have been proposed to utilize all electrically generated excitons, and the ideal charge-to-photon internal quantum efficiency can reach 100%.…”

46‐2: Invited Paper: A Flexible OLED Display with Robustness and Bendability

“…We proposed, as applications of flexible displays, a side-roll display and a foldable display in 2013 and a foldable display incorporating a touch sensor in 2014 [28][29][30]. Displays with such designs have already been commercialized and are attracting considerable attention.…”

45-3: A Novel Seamless Kawara-type Multidisplay with Flexible OLED Panels Using an Optically Isotropic Film

“…We previously developed and fabricated various types of flexible OLED displays using a transfer technology involving an inorganic separation layer [3][4][5][6]. In this technique, a tungsten separation layer and a passivation layer consisting of plural inorganic films are first formed on a glass substrate.…”