3m Innovative Properties Company

Jody L Peterson

Timothy J Nevitt

Adam D Haag

Sun-Yong Park

Brianna N Wheeler

Gilles J Benoit

Robert L Brott

Encai Hao

Zhaohui Yang

Yongshang Lu

Bing Hao

Keith R Bruesewitz

Seong Taek Lee

David A Rosen

Albert I Everaerts

William Blake Kolb

David G Freier

Bert T Chien

Nicholas C Erickson

Stephen M Menke

An organic light emitting diode (OLED) display includes a pixelated OLED display panel and a color-correction component disposed on the pixelated OLED display panel. The pixelated OLED display panel has a ratio of blue-to-red color mixing weights at 30 degrees of β, and a ratio of blue-to-red color mixing weights at 45 degrees of β, where β≥β≥1.05 and 1.5≥β≥1.1. The color-correction component is configured such that a ratio of blue-to-red color mixing weights at 45 degrees of the display is βand a ratio of blue-to-red color mixing weights at 30 degrees of the display is β, where β−0.1≥β≥2.1−βand β−0.05≥β≥2.05−β. Methods of making OLED displays are described.

Organic light emitting diode display with color-correction component having different color mixing weights

An OLED display including a display panel and a color-correction component is described. A plurality of comparative display panels otherwise equivalent to the display panel but having one or more different optical thicknesses of OLED layers have a maximum white-point color shift from 0 to 45 degrees of WPCSand a white-point axial efficiency of WPAE. The plurality of comparative display panels defines a performance curve along a boundary of performance points. The OLED display and the display panel have respective maximum white-point color shifts from 0 to 45 degrees of WPCSand WPCSand respective white-point axial efficiencies of WPAE and WPAE. WPCSand WPAEdefines a performance point of the display panel to the right of the performance curve and WPCSand WPAE defines a performance point of the OLED display above or to the left of the performance curve. Methods of making the OLED display are described.

Organic light emitting diode with color-correction for maximum white-point color shift

A partial reflector including a plurality of optical repeat units where each optical repeat unit includes first and second polymer layers is described. A refractive index difference between the first and second polymer layers along a first axis may be Any, a refractive index difference between the first and second polymer layers along an orthogonal second axis may be &#x394;&#x192;&#x3c7;, where |&#x394;&#x3b7;&#x3c7;| is at least 0.1 and |&#x394;ny| is no more than 0.04. The optical repeat units may have a smallest optical thickness Tproximate a first side of the optical stack and a largest optical thickness Tproximate an opposite second side of the optical stack, where (T&#x2212;T)/(T+T) is in a range of 0.05 to 0.2, and Tis at least 350 nm and no more 1250 nm. The partial reflector may be used in a circular polarizer for correcting color shift with view angle in a display.

Partial reflector having stack of polymer layers for correcting color shift

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Cottage Grove, MN, United States of America

Jody L Peterson