Eastman-kodak Company

Skc Haas Display Films Co., Ltd.

Rohm and Haas Denmark Finance A/s

Solid State Opto Limited

Rohm and Haas Electronics Materials LLC

Robert P Bourdelais

Peter T Aylward

Alphonse D Camp

Thaddeus S Gula

Cheryl J Kaminsky

Douglas N Haydock

Thomas M Laney

Cheryl J Brickey

Mridula Nair

Narasimharao Dontula

Ronald S Cok

Debasis Majumdar

Sandra J Dagan

William T Rochford

James L Edwards

Gary J Mcsweeney

Qi Hong

John M Palmeri

Pang-Chia Lu

John C Brewer

Jehuda Greener

John B Rieger

Michael R Brickey

Geoffrey Mruk

David Lynn Patton

Roger Stanley Kerr

Charles M Rankin

John L Pawlak

Wen-Li A Chen

Steven J Neerbasch

David D Kessler

John P Spoonhower

Suresh Sunderrajan

James F Elman

Thomas M Smith

Eric Eugene Arrington

John M Pochan

John F Sawyer

Kenneth W Best, Jr

John E Benson

David C Wideman

Esther M Betancourt

Robert F Cournoyer

John J Seyna

Leonard S Gates

Herong Lei

Timothy J Giarrusso

Robert G Spencer

John Andrew Lebens

Jeffery R Parker

Kevin Edward Spaulding

Timothy John Tredwell

Xiang-Dong Mi

Mary Christine Brick

Timothy A McCollum

Keith B Kahen

Tamara K Jones

Ronald Myron Wexler

Loretta E Allen

Glen C Irvin, Jr

Robert C Bryant

Tomohiro Ishikawa

Eric L Bell

YuanQiao Rao

Jerzy Z Mydlarz

Jerzy A Budz

Michael R Roberts

Anne E Bohan

Madhav Mehra

Dennis Emmett McGee

Richard Allen Castle

Richard Dominic Bomba

Pamela M Ferguson

Wayne K Shaffer

Robert M Sheppard

Junwon Lee

Cathy A Fleischer

Edgar E Riecke

Daniel C Lioy

Randall Wilson

Drew D Summers

David C Press

Robert L Walton

Patrick J Whittaker

Stephen C Meissner

Michelle M Oakland

Justin Z Gao

Philip J Smith

Paul J Guiguizian

Gerald T Hertzel

William Baum

Chris P Brophy

Yawcheng Lo

Steven M Pratt

Charles B Woodworth

Ann P Newberry

Louis P Harasta, Jr

Amy L Bench

Kalpana Singh

Michael L Ferranti

The present invention provides an integrated backlight illumination assembly for an LCD display comprising, a plurality of solid state light sources for providing a point light source and a plurality of light guide films having light redirecting areas provided between the plurality of solid state light sources for redirecting and spreading the point light sources to a uniform plane of light. The invention further provides at least one polymer diffusion bar covering said solid state light sources and spacer collar rings comprising an optical spacer, collar section and an anchoring feature, wherein the spacer collar rings are located around a perimeter of the diffusion bar.

Diffusion bar with spacer collar ring

Disclosed is an article comprising a layer of nonconductive polymeric material comprising a plurality of integral polymer conduit channels containing a substantially transparent conductive material.

Article comprising conductive conduit channels

A uniform light source having a substrate for providing structural and functional support to the assembly. A bottom reflector provided on the substrate. A plurality of solid state light sources provided in an opening of the bottom reflector for providing a point light source. A plurality of light films and having light redirecting areas provided between the plurality of solid state light sources for redirecting and spreading the point light source to a uniform plane of light; a joining clip comprising a top capping portion and a bottom support portion, the bottom support portion being aligned perpendicular to the top capping portion and having a height sufficient to house the plurality of light films. A top diffuser for diffusing the uniform plane of light. The plurality of light films has a thickness between 0.1 mm to 1.0 mm. In addition, the joining clip further comprises a light diffusion means.

Backlight illumination assembly having a joining clip with diffusion means

The present invention provides a multilayered integrated backlight illumination assembly for an LCD display comprising a substrate for providing structural and functional support to the assembly, a bottom reflector provided on the substrate and a plurality of solid state light sources provided in an opening of the bottom reflector for providing a point light source. The invention further provides a plurality of primary light films having light redirecting areas provided between the plurality of solid state light sources for redirecting and spreading the point light source to a uniform plane of light, a plurality of secondary light films having light redirecting areas provided between the plurality of solid state light sources for redirecting and spreading the point light source to a uniform plane of light and a binding means for binding the primary and secondary light films together. Further, the invention provides a top diffuser for diffusing the uniform plane of light and wherein the plurality of light films has a thickness between 0.1 mm to 1.0 mm and a bending stiffness between 50 to 1200 millinewtons.

Multilayered integrated backlight illumination assembly

A solid waveguide comprises opposite TIR surfaces further comprising:

Elongated illuminators configuration for LCD displays

The invention relates to a light redirecting film comprising a thin optically transparent substrate having opposite sides, one side of the substrate substantially covered by elongated individual optical elements whose longest dimensions are substantially aligned in a lengthwise direction, wherein the shape of at least some of the optical elements have a visually significant difference, and wherein the layout of optical element shapes and locations is such that objectionable patterns are not visible in the film under standard LCD backlight viewing conditions.

Light redirecting film having varying optical elements

An optical converter and method for making same is provided. In accordance with the method, the present invention provides an improved apparatus and methods for fabrication of an optical converter. In one aspect of the invention a method for forming an optical converter is provided. In accordance with this method at least two light guide ribbon structures are provided, with each light guide ribbon structure formed by the steps of roll molding a substrate having a pattern of channels with each channel extending from an input edge to an output edge of said substrate and forming light guides extending along each of the channels from the input edge to the output edge. The at least two light guide ribbon structures are assembled in a stacked arrangement.

Apparatus and method for forming an optical converter

A display comprises a light source and a light redirecting polymeric film containing a structured surface on at least one side of the film and bearing a polymeric coating over at least part of the structured surface wherein the coating exhibits a variable thickness.

Light redirecting film having variable thickness

A backlight device for a display comprising (1) a side-lit light source, (2) a light guide plate and (3) a turning film comprising a light entry and a light exit surface comprising lenticular elements on the exit surface and prismatic structures on the entry surface, wherein the average values of the parameters of the features and the thickness of the film are selected to provide a peak output angle of &#xb1;10&#xb0; from normal to the light exit surface of the light guide plate and an optical gain of at least 1.25. Also disclosed are methods of making the turning film and a display incorporating the backlight.

Double-sided turning film

The invention relates to a display comprising a light source and a light redirecting polymeric film containing a structured surface on at least one side of the film and bearing a discontinuous population of adherent beads bonded to the structured surface.

Light redirecting film having discontinuous coating

A backlight apparatus for directing light toward a display panel and the resulting display device comprises a solid lightguide comprising opposite TIR surfaces, containing a desired pattern of light redirecting surface features located between the TIR surfaces and interrupting one of the TIR surfaces, the features having a refractive index differing from that of the solid material of the light guide. Such an apparatus provides a more even light distribution to the display.

LCD displays with light redirection

The invention relates to an apparatus and method of making a solid film. Viscous material () is input into a nip between a patterned roller () and a belt (). The nip between the patterned roller () and belt () is facilitated by a compliant roller (). Accordingly, a film may be produced that has discrete optical elements and a smooth backside.

Smooth compliant belt for use with molding roller

A touch screen comprising a flexible sheet comprising a substantially planar surface and integral compressible spacer dots formed thereon, where each spacer dot comprises a base cross section in the substantially planar surface of the flexible sheet defined by a first point or set of connected points intersecting an axis in the substantially planar surface, a second opposed point or set of connected points intersecting the axis, and first and second continuous edge segments connecting the first and second points or end points of the first and second sets of points on opposite sides of the axis, wherein the spacer dot has a variable height perpendicular to the substantially planar surface along the axis, and wherein the surface of the spacer dot extending above the base cross section is not equidistant from the mid-point of the axis between the intersections of the first and second points or sets of connected points and the axis.

Integral spacer dots for touch screen

Disclosed is an article comprising a polymer layer containing a plurality of integral polymer conduit channels that contain at least two layers with at least one comprising a conductive material and the other serving a function beyond protection.

Conductive patterned sheet utilizing multi-layered conductive conduit channels

The invention relates to a light redirecting polymeric film comprising a plurality of polymeric individual optical elements wherein the elements comprise curved wedge shaped features in the plane of the film, having a length in the range of 800 to 4000 micrometers.

Long curved wedges in an optical film

Growing community of inventors

Pittsford, NY, United States of America

Robert P Bourdelais