3m Innovative Properties Company

Brianna N Wheeler

Adam D Haag

Matthew B Johnson

Timothy J Nevitt

Sun-Yong Park

Jody L Peterson

Albert I Everaerts

William Blake Kolb

Gilles J Benoit

Robert L Brott

Encai Hao

Michael A Johnson

Zhaohui Yang

Yongshang Lu

David G Freier

Bing Hao

David T Yust

Kristy A Gillette

Michelle Lund Toy

Bert T Chien

Keith R Bruesewitz

Seong Taek Lee

Stephan J Pankratz

Nicholas C Erickson

Jonah Shaver

David A Rosen

John F VanDerlofske, Iii

Stephen M Menke

Eileen M Franey

Takashi Fujita

William F Edmonds

Chikara Abe

A windshield of a vehicle includes a reflective polarizer. The windshield is configured to receive and reflect an image light emitted by a display toward a passenger of the vehicle, such that for a substantially normally incident light, the windshield has first and second reflection spectra versus wavelength for the incident light polarized along respective first and second directions. The first reflection spectrum includes a plurality of reflection bands. Each of the reflection bands has a maximum reflectance R1max between 20% and 80%. Between each pair of adjacent reflection bands in the plurality of reflection bands, the first reflection spectrum has a minimum reflectance R1min between 5% and 25%. In the visible wavelength range, the second reflection spectrum has a maximum reflectance R2max and a minimum reflectance R2min, such that R2max and R2min are within 15% of each other.

Windshield, display system, and reflective polarizer

An optical stack includes a reflective polarizer including a plurality of interference layers and an absorbing polarizer disposed on the reflective polarizer. The plurality of interference layers transmits at least about 85% of an incident light having a first polarization state, reflects at least about 80% of the incident light having a second polarization state, and transmits less than about 0.1% of the incident light having the second polarization state. The absorbing polarizer has a first transmittance for the first polarization state and a second transmittance for the second polarization state. An average of the first and second transmittances is greater than about 0.46. The second transmittance has a first standard deviation. The optical stack has a transmittance for the second polarization state having a second standard deviation which is less than the first standard deviation by at least about 10%. A display includes the optical stack.

Optical stack and display

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

A glass laminate including first and second glass layers, a reflective film having opposed first and second major surfaces and disposed between the first and second glass layers with the first and second major surfaces facing the respective first and second glass layers, a first adhesive layer disposed between and bonding together the first glass layer and the reflective film, and a second adhesive layer disposed between and bonding together the second glass layer and the reflective film is described. The second adhesive layer is thicker than the first adhesive layer such that the first major surface of the reflective film is separated from an outermost major surface of the first glass layer by a distance d1, the second major surface of the reflective film is separated from an outermost major surface of the second glass layer by a distance d2, and 0.05≤d1/d2≤0.9.

Glass laminate including reflective film

A film stack includes co-stretched first and second layers. The first layer is stained with iodine and has a glass transition temperature of at least 5° C. greater than a glass transition temperature of the second layer. The second layer has in-plane birefringence of less than 0.02 and a retardance of less than 100 nm.

Film stacks for thin circular polarizers

An optical film includes a plurality of alternating first and second layers. The first layers have a first in-plane birefringence, the second layers have a second in-plane birefringence, and the second in-plane birefringence is less than the first in-plane birefringence and greater than 0.03. The first layers may include polyethylene terephthalate homopolymer and the second layers may include glycol-modified co(polyethylene terephthalate). The optical film has a shrinkage along a first direction of greater than 4% and a shrinkage along an orthogonal second direction of greater than 3% when heated at 150° C. for 15 minutes. A glass laminate is prepared by disposing the optical film between glass layers and laminating the optical film to the glass layers.

Optical film and glass laminate

A glass laminate () including first and second glass layers (), a reflective film () having opposed first and second major surfaces and disposed between the first and second glass layers () with the first and second major surfaces facing the respective first and second glass layers (), a first adhesive layer () disposed between and bonding together the first glass layer () and the reflective film (), and a second adhesive layer () disposed between and bonding together the second glass layer () and the reflective film () is described. The second adhesive layer () is thicker than the first adhesive layer () such that the first major surface of the reflective film () is separated from an outermost major surface of the first glass layer () by distance d, the second major surface of the reflective film () is separated from an outermost major surface of the second glass layer () by a distance d, and 0.05<d/d<0.9.

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 film stack includes an oriented first layer including polyvinyl alcohol disposed on an oriented second layer including naphthalene dicarboxylate containing copolyester resin. The oriented second layer has in-plane birefringence Δnxy<0.02.

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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Bloomington, MN, United States of America

Brianna N Wheeler