3m Innovative Properties Company

Chideuk Kim

Kenneth A Epstein

Youngsoo Park

Mark David Gehlsen

Robert M Emmons

Ryan T Fabick

Linda Mae Rivard

James W Laumer

Byungsoo Ko

Chingwen Chen

Ji-Hwa Lee

Ji-Hyung Kim

Kang-Il Seo

Shandon Dee Hart

Gary Timothy Boyd

Eric Wayne Nelson

Keith Michael Kotchick

Leland Ray Whitney

Charles David Hoyle

Rui Zhang

Jie Zhou

Wade D Kretman

Byung-Soo Ko

John T Cowher

David J Lamb

Yuji Saito

John F Van Derlofske, Iii

Xianneng Peng

James A Stevenson

Yasuyuki Daigo

Xingpeng Yang

Ji-young Choi

Seo-Hern Lee

Yang Yu

Min-Young Ji

Naoya Taniguchi

A backlight includes a light source and one or more light recycling films. The light source generates light that exits the light source with an angular exit distribution. The light recycling films are oriented in relation to the light source so that the prism peaks of the recycling films are oriented away from the light source. The recycling films have a range of optimal incident angles that allow light to pass through the recycling films without recycling. The components of the light source, the characteristics of the recycling films, or both, are configured to control the overlap between the exit distribution of the light source and the optimal incident angle range of the recycling films.

Systems and methods for controlling backlight output characteristics

In a directly-illuminated liquid crystal display (LCD), for example an LCD monitor or an LCD-TV, a number of light management films, including a diffuser layer, lie between the light source and the LCD panel to provide bright, uniform illumination. The diffuser layer is attached to a substrate which is separate from the light source and the LCD panel, or may be attached to either the LCD panel or, when using a two dimensional light source, to the light source. The other light management layers may also be attached to the separate substrate or to the LCD panel or two-dimensional light source. High levels of illumination uniformity at the LCD may be achieved with a uniform (non-patterned) diffuser, even with relatively low levels of diffusion, when the diffuser is used with a brightness enhancing layer.

Direct-LIT liquid crystal displays with laminated diffuser plates

Direct-lit liquid crystal displays with laminated diffuser plates

In a directly-illuminated liquid crystal display (LCD), for example an LCD monitor or an LCD-TV, a number of light management layers lie between the light source and the LCD panel to provide bright, uniform illumination. The light management layers, including, for example, a diffuser, a reflective polarizer and a brightness enhancing layer, are contained in a light management unit that is formed from two subassemblies. The two subassemblies each contain a substrate and are attached together so as to leave a gap between the two subassemblies. The diffuser is located in one of the subassemblies, and the other light management layers may be in either of the subassemblies, or may be disposed in the gap between the subassemblies.

Composite diffuser plates and direct-lit liquid crystal displays using same

Growing community of inventors

Sungnam, South Korea

Chideuk Kim