79‐2: Hyperrealism in Full Ultra High‐Definition 8K Display

Abstract

8K displays have four times more resolution than 4K, which means that they will have twice the spatial frequency per screen length. With higher intensive Mach band effect, 8K displays show stronger luminance intensity for the objects and edges within the image. Higher resolution results in higher brightness and contrast and improves color and clarity expressions. In this study, 4K (60cpd) and 8K (120cpd) are quantified in realistic conditions of display 65 inches, viewing distance, and psychophysical images and videos selected through general luminance. As a result, an increase in resolution from 4K to 8K is perceived as increasing the perception contrast and color representation in all images, which have an integrated effect on cognitive resolution according to the image.

Advances in Solution‐Processed OLEDs and their Prospects for Use in Displays

“…[289] To fabricate efficient fluorescent OLEDs that use exciplexes, the FRET should be dominated by direct FRET from S 1 of the exciplex host to S 1 of the fluorescent dopant, and by the RISC process, followed by subsequent FRET to the dopant; the latter process causes delayed fluo rescence in the fluorescent dopant (Figure 6b). [292] Therefore, nearly 100% triplet harvesting in the conventional green fluo rescent dopant, 10(2benzothiazolyl)1,1,7,7tetramethyl2,3,6,7 tetrahydro1H,5H,11Hbenzo [1]pyrano [6,7,8ij]quinolizin11one (C545T), was achieved by using 0.2% doping concentration in a bulk exciplex host composed of TAPC and 3(4,6diphenyl 1,3,5triazin2yl)9phenyl9Hcarbazole (DPTPCz) (EQE max = 3.9% (DPTPCz:1% C545T), 7.5% (DPTPCz:1% C545T), 14.5% (DPTPCz:0.2% C545T)). [279] Other work has determined that the concentration of conventional red fluorescent dopant, 4(dicyanomethylene)2tbutyl6(1,1,7,7tetramethyljulolidyl 9enyl)4Hpyran (DCJTB) affects the energy transfer effi ciency.…”

“…Organic lightemitting diodes (OLEDs) are widely used in dis plays, from small to medium ones for information technology devices to large televisions (TVs) and largearea displays. [1][2][3][4][5][6][7][8][9][10] Compared to liquid crystal displays, OLEDs have higher color purity, wider color gamut, wider viewing angle, and higher con trast ratio. [1,2,6] They have fast response and are therefore also suitable for use in gaming monitors.…”

“…[1][2][3][4][5][6][7][8][9][10] Compared to liquid crystal displays, OLEDs have higher color purity, wider color gamut, wider viewing angle, and higher con trast ratio. [1,2,6] They have fast response and are therefore also suitable for use in gaming monitors. Additionally, OLEDs do not need any backlight unit, so they enable various lightweight form factors, including foldable, rollable, and transparent displays.…”

“…[10,28,31] In white tandem EOLED panels, red, green, or blueemitting subcells are stacked, and their emissions combine to yield white light (Figure 2b, left). [1,10,31] However, tandem OLEDs are difficult to fabricate topemission structures, so a bottomemission structure is used. In bottomemission devices, the emitted light passes through underlying thinfilm transistors, but this pathway decreases aperture ratio and luminance (Figure 1b).…”

47.1: Invited Paper: Development of 55inch 8k AMOLED TV by Inkjet Printing Process

“…However, in order to be more competitive and lead the high-end market, there is still strong need for OLED TVs to continually offer differentiated display quality and reduce the manufacturing cost. Nowadays, 8K resolution has become one of the signatures of premium display because it can deliver an increasing perception contrast and color representation based on Mach band effect [1]. However, it is more difficult to realize 8K resolution than 4K for OLED TVs.…”