3m Innovative Properties Company

Edward S Hagermoser

Bernard O Geaghan

Martin B Wolk

Matthew H Frey

Michael Benton Free

Jathan D Edwards

Bharat R Acharya

Lijun Zu

Pradnya V Nagarkar

Fan Long

Massoud S Badaye

Rachael P Marino

Robert S Moshrefzadeh

Craig A Cordeiro

Stephen C Schulz

Gordon F Taylor

Karl P Hauck

Richard A Peterson, Jr

Paul M Hatin

James J Hart

A display system includes visible light emitting first devices configured to emit a first light having at least a first visible wavelength; ultraviolet light emitting second devices configured to emit a second light having at least a second ultraviolet wavelength; a display panel disposed on the first and second devices; and a reflective polarizer disposed between the display panel and the first and second devices, such that the reflective polarizer has, for the visible wavelength, an average optical reflectance of greater than about 50% when an incident light is polarized along an in-plane first direction and an average optical transmittance of greater than about 50% when the incident light is polarized along an in-plane orthogonal second direction; and an optical transmission of greater than about 30% for the at least the second wavelength and for at least one of the first and second polarization states.

Display systems using IR and UV transparent optical films

A digitizer system including a substrate having a position-unique photoluminescent indicia pattern. A stylus component receives optical signals indicative of the indicia pattern and determines therefrom the position of the stylus relative to the substrate. Methods of disposing indicia on the substrate, and styli suitable for sensing photoluminescent indicia are also described.

Optical digitizer system with position-unique photoluminescent indicia

A touch screen sensor with a conductive micropattern includes one or more features to obscure or reduce the visibility of the conductive micropattern.

Touch screen sensor with low visibility conductors

A touch screen sensor includes a visible light transparent substrate and an electrically conductive micropattern disposed on or in the visible light transparent substrate. The micropattern includes a first region micropattern within a touch sensing area and a second region micropattern. The first region micropattern has a first sheet resistance value in a first direction, is visible light transparent, and has at least 90% open area. The second region micropattern has a second sheet resistance value in the first direction. The first sheet resistance value is different from the second sheet resistance value.

Touch screen sensor

A capacitive touch sensing system includes a touch surface and sets of substantially parallel electrodes arranged in relation to the touch surface. Each electrode set includes a primary electrode electrically connected to at least two sub-electrodes. The primary electrode is capable of producing greater capacitive coupling to a touch in proximity with the touch surface in relation to capacitive coupling of the at least two sub-electrodes. The sub-electrodes of the electrode sets are arranged in an interleaved pattern configured to increase an effective area of capacitive coupling associated with each electrode set.

Interleaved electrodes for touch sensing

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

Growing community of inventors

Lancaster, MA, United States of America

Edward S Hagermoser