3m Innovative Properties Company

Hyundai Motor Company

Kia Motors Corporation

Sun-Yong Park

Adam D Haag

Timothy J Nevitt

Matthew B Johnson

Brianna N Wheeler

Song-Geun Lee

Jody L Peterson

Albert I Everaerts

William Blake Kolb

Gilles J Benoit

Robert L Brott

Encai Hao

Zhaohui Yang

Yongshang Lu

David G Freier

Bing Hao

Bert T Chien

Keith R Bruesewitz

Seong Taek Lee

Nicholas C Erickson

David A Rosen

Stephen M Menke

Martin E Denker

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 optical stack includes a reflective polarizer, an absorbing polarizer, and a half-wave retarder. The half-wave retarder is disposed between the reflective and absorbing polarizers. For substantially normally incident light and a first polarization state, the reflective polarizer reflects at least about 60% of the incident light for at least a first wavelength less than a cut-off wavelength and transmits at least about 50% of the incident light for at least a second wavelength greater than the cut-off wavelength. For substantially normally incident light, the half-wave retarder has a first retardance of less than about 250 nanometers (nm) at the first wavelength and a second retardance at the second wavelength. A deviation of the first retardance from a first half-wave retardance corresponding to the first wavelength is less than a deviation of the second retardance from a second half-wave retardance corresponding to the second wavelength.

Optical stack having absorbing polarizer, half-wave retarder, and reflective polarizer

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

Optical film stacks are described. More particularly, optical film stacks including a half-wave retardation layer are described. Achromatic half-wave retardation layers, including achromatic half-wave layers formed from a quarter-wave and a three-quarters-wave retardation layer, are described. Film stacks including reflective polarizers tuned to reduce wavelength dispersion of the half-wave retardation layer are also described.

Optical film stack including retardation layer

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

A variable air vent is provided. The air vent includes a housing that is mounted on a vehicle and has an open center. A ball housing is coupled to the housing and has an inner side surface that is formed in a curved surface. A ball configured has front and rear surfaces opened and a side surface that is inserted into the ball housing in a curved surface form corresponding to the ball housing. A first knob and a second knob are vertically disposed on the front and rear surfaces of the ball and a plurality of discharge range adjusting wings have a first rotating shaft that is integrally formed at one end of a flat plate. A first side of the first rotating shaft is inserted into the ball and a second side thereof includes a first wing gear inserted into the second knob.

Variable air vent

Growing community of inventors

Hwaseong-si, South Korea

Sun-Yong Park