SG11201810474SA - Oled display with improved color uniformity - Google Patents

Abstract

INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property 1 MEM 0 11101 HOE 010 1111 1 0 01 010 111111011 010 HO MN ill OEN Organization International Bureau (10) International Publication Number (43) International Publication Date .....0\"\"\" WO 2017/205174 Al 30 November 2017 (30.11.2017) WIPO I PCT (51) International Patent Classification: HO1L 51/52 (2006.01) (21) International Application (22) International Filing Date: (25) Filing Language: (26) Publication Language: (30) Priority Data: 62/342,620 27 May (71) Applicant: 3M INNOVATIVE PANY [US/US]; 3M Center, Post Office Box 33427, Saint Paul, Minnesota 55133-3427 (72) Inventors: FREIER, David G.; 3M Center, Post Of- fice Box 33427, Saint Paul, BROTT, Robert L.; 3M Center, Post Office Box 33427, HO1L 27/32 (2006.01) Saint Paul, Minnesota 55133-3427 (US). MEYER, Justin P.; 3M Center, Post Office Box 33427, Saint Paul, Minneso- Number: PCT/US2017/033291 to 55133-3427 (US). (74) Agent: RICHARDSON, Clifton F. et al.; 3M Center, 18 May 2017 (18.05.2017) Office of Intellectual Property Counsel, Post Office Box 33427, Saint Paul, Minnesota 55133-3427 (US). English (81) Designated States (unless otherwise indicated, for every English kind of national protection available): AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, 2016 (27.05.2016) US CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, PROPERTIES COM- HR, HU, ID, IL, IN, IR, IS, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, (US). MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, Minnesota 55133-3427 (US). IMPROVED COLOR UNIFORMITY 146 147 104 103 102 100 ' 110 d configured differing refractive the first layer density (PSD) index of the product the wavenumber-PSD (54) Title: OLED DISPLAY WITH = = — = = = — = 106 ihow y b iu hi pm _ = 120 — 101{ = = 138 nanostructured interface layers with is disposed between power spectral times the refractive = = = = 134 has = = = all. 1111111 . 111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111 . 1 131 - = IMIll'illailliS1111110110111011.1.1111111111101101111111111111 EMI z mimainammai ammaimmammommi = view angle are described. An optical stack having first and second interface lower than 6 radians/micrometer times the second refractive index, 130 132 133 FIG* diode (OLED) displays having an emissive OLED layer and a between the first and second layers. The second layer nanostructured interface has a substantially azimuthally symmetric a maximum for a wavenumber larger than 6 radians/micrometer 1-1 I I - (57) : Organic light emitting IN ,-1 to reduce variability of color with ir) indices includes the nanostructured and the emissive OLED layer. The ei ----. and a wavenumber-PSD product IN second layer. For all wavenumbers © is no more than 0.3 times the maximum. ei C [Continued on next page] WO 2017/205174 Al MIDEDIMOMOIDEIRMEM00101011MOMEHMEMOIMIE SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW. (84) Designated States (unless otherwise indicated, for every kind of regional protection available): ARIPO (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW), Eurasian (AM, AZ, BY, KG, KZ, RU, TJ, TM), European (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR), OAPI (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG). Declarations under Rule 4.17: — as to applicant's entitlement to apply for and be granted a patent (Rule 4.17(H)) — as to the applicant's entitlement to claim the priority of the earlier application (Rule 4.17(iii)) Published: — with international search report (Art. 21(3))