US 12,007,593 B2
Organic light emitting diode with color-correction for maximum white-point color shift
Nicholas C. Erickson, St. Paul, MN (US); David G. Freier, St. Paul, MN (US); Robert L Brott, Woodbury, MN (US); Bing Hao, Woodbury, MN (US); David A. Rosen, Maplewood, MN (US); Stephen M. Menke, St. Paul, MN (US); Bert T. Chien, St. Paul, MN (US); Seong Taek Lee, Woodbury, MN (US); Encai Hao, Woodbury, MN (US); Zhaohui Yang, North Oaks, MN (US); Albert I. Everaerts, Tuscon, AZ (US); Yongshang Lu, Woodbury, MN (US); William Blake Kolb, Stillwater, MN (US); Keith R. Bruesewitz, River Falls, MN (US); Adam D. Haag, Woodbury, MN (US); Sun-Yong Park, Hwaseong-si (KR); Timothy J. Nevitt, Red Wing, MN (US); Brianna N. Wheeler, Bloomington, MN (US); Jody L. Peterson, Cottage Grove, MN (US); and Gilles J. Benoit, Minneapolis, MN (US)
Assigned to 3M INNOVATIVE PROPERTIES COMPANY, St. Paul, MN (US)
Appl. No. 17/044,367
Filed by 3M INNOVATIVE PROPERTIES COMPANY, St. Paul, MN (US)
PCT Filed Apr. 9, 2019, PCT No. PCT/US2019/026491
§ 371(c)(1), (2) Date Oct. 1, 2020,
PCT Pub. No. WO2019/204078, PCT Pub. Date Oct. 24, 2019.
Claims priority of provisional application 62/659,175, filed on Apr. 18, 2018.
Prior Publication US 2021/0098546 A1, Apr. 1, 2021
Int. Cl. G02B 5/28 (2006.01); H10K 59/35 (2023.01); H10K 59/50 (2023.01)
CPC G02B 5/287 (2013.01) [H10K 59/35 (2023.02); H10K 59/50 (2023.02)] 20 Claims
OG exemplary drawing
 
1. An organic light emitting diode (OLED) display comprising:
a pixelated OLED display panel having a maximum white-point color shift as a view angle varies from 0 to 45 degrees of WPCS045 and a white-point axial efficiency of WPAE0, the pixelated OLED display panel comprising a plurality of pixels, each pixel comprising a plurality of subpixels, each subpixel comprising a plurality of OLED layers; and
a color-correction component disposed on the pixelated OLED display panel, the color-correction component configured such that the display has a maximum white-point color shift as a view angle varies from 0 to 45 degrees of WPCS45 and a white-point axial efficiency of WPAE,
wherein each comparative display panel in a plurality of comparative display panels otherwise equivalent to the pixelated OLED display panel but having one or more different optical thicknesses of the OLED layers has a maximum white-point color shift as a view angle varies from 0 to 45 degrees of WPCSC45 and a white-point axial efficiency of WPAE, the plurality of comparative display panels defining a first performance curve along a boundary of performance points in WPCSC45-WPAEC space,
wherein a plurality of comparative displays otherwise equivalent to the display but having one or more different optical thicknesses of the OLED layers defines a second performance curve along a boundary of performance points in WPCSC45-WPAEC space, the second performance curve being above or to the left of the first performance curve, WPCS45 and WPAE defining a performance point of the display substantially along the second performance curve,
wherein the second performance curve and the plurality of comparative displays defines a third performance curve in WPCSC45-WPAEC space such that for each comparative display in the plurality of comparative displays having a performance point along the second performance curve, removing the color-correction component from the comparative display results in a comparative display panel having a performance point along the third performance curve, the third performance curve being to the right of the first performance curve, WPCS045 and WPAE0 defining a performance point of the display panel substantially along the third performance curve.