3m Innovative Properties Company

Minnesota Mining and Manufacturing Company

Robert S Moshrefzadeh

Patrick A Thomas

John C Nelson

Richard John Pokorny

Hsin-hsin Chou

Elisa M Cross

Albert I Everaerts

Raghunath Padiyath

Scott Melvyn Tapio

Jiaying Ma

Zhiming Zhou

Robert L Brott

Ying-Yuh Lu

Jeffrey C Chang

Leland Ray Whitney

Yaoqi Joe Liu

Steven J Rhyner

Philip Edwin Watson

Hassan Sahouani

Kim Marie Vogel

Keith Michael Kotchick

Jie Yang

Robert M Emmons

Frank J Bottari

Mark B O'Neill

Daniel W Hennen

Craig A Cordeiro

Larry A Meixner

Peter M Olofson

Stephen C Schulz

Geoffrey P Morris

David J Lamb

Michael L Graetz

Anthony F Chernefsky

Amy J Gates

William A Hibbard

Andrew J Piepel

Leo A Meyer

Theodore W Hodapp

Jacqueline C Rolfs

Billy J Tompkins

Thomas N Davis

Colleen M Brenner

Ragunath Padiyath

Andrew John Ouderkirk

Michael F Weber

Timothy J Nevitt

Brant Ulrick Kolb

William Ward Merrill

Gary Timothy Boyd

Bernard O Geaghan

Patrick R Fleming

Jeffrey Jacob Cernohous

Kevin R Schaffer

Richard C Allen

Charles L Bruzzone

Emily S Goenner

Michael J Robrecht

Yorinobu Takamatsu

Ranjith Divigalpitiya

David Edward Livingstone

Todd A Ballen

Bruce A Nerad

Paul Richter

Makoto Ishikawa

Brian E Aufderheide

Edward S Hagermoser

Gordon F Taylor

Karl P Hauck

Darran R Cairns

Wayne M Wirth

Richard A Peterson, Jr

Michael J Kardauskas

Peter F Cullen

Thomas R Gehring

Takashi Harada

Jessica L Voss-Kehl

James J Hart

Paul M Hatin

A capacitive touch screen is described with a touch area including a substantially transparent conductive polymer. The capacitive touch screen also includes circuitry connecting the conductive polymer of the touch area to a power source, where the circuitry is configured to determine a location of a capacitive coupling on the touch area.

Capacitive touch screen with conductive polymer

A light managing screen may provide a rear projection screen, front projection screen or component thereof. The screen may comprise a polymeric composition including a first polymeric material, and a second polymeric material disposed as a plurality of elongated structures within the first polymeric material. Each elongated structure has a major axis and the major axes are substantially aligned. The first polymeric material has an index of refraction that differs by at least 0.01 from an index of refraction of the second polymeric material. In some instances, a pressure sensitive adhesive material is selected as the first polymeric material. The orientation of the elongated structures and the difference in indices of refraction results in the polymeric composition scattering light asymmetrically.

Light emitting diode (LED) device and method of making same

The present invention provides touch panels and touch panel substrates that include spacer dots comprising a nanocomposite material. The present invention also provides methods of ink jet printing spacer dots for touch panel applications. The spacer dots and methods of making spacer dots can lead to spacers that have good durability, have controllable sizes, shapes, and spacings, and have desirable optical properties.

Touch panel spacer dots and methods of making

Touch panel systems and methods are disclosed that can distinguish temporally overlapping touch inputs from single touch inputs so that valid touch position coordinates can be determined. Touch panel systems and methods of the present invention can distinguish overlapping touches by comparing signal magnitudes to specified thresholds, by comparing the rates of change of signal magnitudes or measured positions to determined parameters, by locating the proximity a calculated location to icons or other such active areas, and the like. Because touch panel systems and methods of the present invention can discriminate single touches from double touches, they can be used in multiple user applications such as multiplayer games as well as in applications that may be subject to rapidly successive or overlapping touch inputs.

Touch panel system and method for distinguishing multiple touch inputs

A film for a screen has a light transmitting substrate and a plurality of structures disposed on the substrate. An optical material at least partially fills cavities between the structures. A method of forming a film includes providing a light transmitting substrate having a plurality of structures disposed thereon and at least partially filling the cavities therebetween with an optical material.

Microstructured screen with light absorbing material and method of manufacturing

A touch sensing method and a touch sensing device are described for sensing a location of a touch. When the touch sensing device is touched, a first conductive layer disposed on a supporting layer is deflected toward a second conductive layer. The touch location is determined by sensing the change in capacitance at the location of the touch. A change in capacitance at the touch location is sensed by driving one of the conductive layers with an electrical signal referenced to the other conductive layer and measuring the current flow between the conductive layers. The sensed change in capacitance is greater than a change in the external capacitance of the touch sensor.

Touch sensor

An integrated optical assembly including a light management component with an entry surface and a light delivery component having an exit surface attached to the entry surface of the light management component is disclosed The light management component and the light delivery component are attached together in a manner that defines voids between the entry surface of the light management component and the exit surface of the light delivery component. The voids between the light management component and the light delivery component may provide an air interface over substantial portions of the entry surface of the light management component.

Multifunctional optical assembly

The present invention discloses resistive touch sensors that incorporate microstructured conductive layers. When local electrical contact is made between the microstructured conductive layer and an opposing conductive layer due to a touch input, the resulting signal can be used to determine the location of the touch. The microstructures can be used to penetrate a solid, deformable filler material disposed between the conductive layers, for example to provide more transmission of light through the sensor. The microstructures can also provide additional functionalities such as z-axis sensitivity, image direction, light control, light extraction, and so forth.

Resistive touch sensor having microstructured conductive layer

Projection screen having elongated structures

Described are multilayer optical composites including a first layer having an index of refraction n, an ilayer having an index of refraction ngreater than n, and one or two or more intermediate layers between the first layer and the ilayer, wherein the indices of refraction of the intermediate layers are between nand n, and the index of refraction of each intermediate layer increases in the order of position of each layer from the first layer.

Multilayer optical adhesives and articles

The present invention provides a switchable pressure activated electronic device. The switchable electronic device includes a composite material disposed between two conductors. The composite material electrically connects the two conductors when pressure is applied between them, and electrically isolates the two conductors when pressure is not applied between them. The composite includes conductive particles at least partially embedded in an insulating material. The conductive particles are disposed so that substantially all electrical connections made between the first and second conductors are through single particles.

Pressure activated switch and touch panel

A polarizer construction is disclosed that includes a reflective polarizer disposed on a first side of the construction to transmit light having one polarization and reflect light having an orthogonal polarization, and one or more colored dichroic polarizers disposed on a second side of the construction. The one or more colored dichroic polarizers are arranged so that when the construction is illuminated from the first side, an observer viewing the construction from the second side will observe a first spectral distribution of visible light, and when the construction is illuminated from the second side, an observer viewing the construction from the second side will observe a second spectral distribution of visible light different from the first spectral distribution. Various display constructions using colored polarizers to achieve color changing and image reversal effects are also disclosed.

Polarizer constructions and display devices exhibiting unique color effects

Growing community of inventors

Oakdale, MN, United States of America

Robert S Moshrefzadeh