15.3: Development of Side‐Roll and Top‐Roll Panels for an RGBW High‐Resolution Flexible Display Using a White OLED with Microcavity Structure

Abstract

In this study, white organic EL devices with microcavity structures were developed. A flexible high‐resolution AMOLED display with low power consumption using RGBW sub‐pixels formed by a color filter method was fabricated. In addition, side‐roll and top‐roll panels with bezels that are not viewable from the front were also developed using the flexible AMOLED display.

Transfer technology using inorganic separation layer and apparatus for fabricating flexible OLED displays

“…The water vapor transmission rate of our passivation layer, under water vapor conditions of 38°C and 90% RH, was estimated to be 7 × 10 À6 g/m 2 day or less. 1 This rate indicates that the passivation layer used in our transfer technology is highly reliable. Note that if a color filter method had been used to fabricate flexible displays, a color filter would have had difficulty bonding accurately to a flexible substrate.…”

“…We fabricated 5.2-inch side-roll and top-roll OLED displays, twofold and tri-fold 5.9-inch foldable OLED displays, and an 81-inch OLED kawara-type multidisplay as applications. [1][2][3][4] Figure 1 shows general fabrication processes of flexible displays. Our flexible displays were fabricated by an inorganicseparation-layer process using a separation layer containing an inorganic material.…”

High-resolution OLED display with remarkably low power consumption using blue/yellow tandem structure and RGBY subpixels

“…structure. 8 In this study, blue and yellow OLEDs having high efficiency were developed, and a blue/yellow (B/ Y) tandem structure with extremely low power consumption was invented. Furthermore, red, green, blue, and yellow (RGBY) subpixels, including the B/Y tandem structure, were fabricated instead of RGBW subpixels; hence, a highresolution, low-power active-matrix OLED (AMOLED) display using color filters was achievable.…”

P‐193: Viewing Angle Performance of Curved Color‐by‐White AMOLEDs

“…In order to verify this hypothesis, measurements with color-bywhite architecture were performed using goniometric spectroscopy. The display in this study also has a thinner semitransmissive electrode, which may additionally contribute to a smaller color shift [12].…”