Front-lit reflective display device and method of front-lighting reflective display

Front-lit reflective display device and method of front-lighting reflective display

This application describes a front-lit reflective display assembly including a reflective display and an illumination article for front-lighting the display when the article is optically coupled to a light source. The illumination article includes a variable index light extraction layer optically co...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: SHERMAN, AUDREY ANNE, SOLOMONSON STEVEN D, STAY MATTHEW S, HAO, ENCAI, SCHAFFER, KEVIN ROMAN, YANG, ZHAOHUI, THOMPSON, DAVID SCOTT, WHEATLEY JOHN A, WOODY JOSEPH W, PEKUROVSKY, MIKHAIL L, MEIS, MICHAEL ALAN, BRYAN, WILLIAM JAMES
Format: Patent
Sprache:chi ; eng
Schlagworte:
DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING
FREQUENCY-CHANGING
NON-LINEAR OPTICS
OPTICAL ANALOGUE/DIGITAL CONVERTERS
OPTICAL LOGIC ELEMENTS
OPTICS
PHYSICS
TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF
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Beschreibung
Zusammenfassung:This application describes a front-lit reflective display assembly including a reflective display and an illumination article for front-lighting the display when the article is optically coupled to a light source. The illumination article includes a variable index light extraction layer optically coupled to a lightguide. The variable index light extraction layer has first and second regions, the first region comprising nanovoided polymeric material, the second region comprising the nanovoided polymeric material and an additional material, the first and second regions being disposed such that for light being transported at a supercritical angle in the lightguide, the variable index light extraction layer selectively extracts the light in a predetermined way based on the geometric arrangement of the first and second regions. Front-lit reflective display devices including the front-lit reflective display assembly optically coupled to a light source are also described.