Molded LED light sheet

An initially flat light sheet is formed by printing conductor layers and microscopic LEDs over a flexible substrate to connect the LEDs in parallel. The light sheet is then subjected to a molding process which forms 3-dimensional features in the light sheet, such as bumps of any shape. The features...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	Kahrs Eric William, Oraw Bradley Steven
Format:	Patent
Sprache:	eng
Schlagworte:	ADVERTISING BASIC ELECTRIC ELEMENTS BLASTING CRYPTOGRAPHY DISPLAY DISPLAYING EDUCATION ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR ELECTRICITY FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMSTHEREOF HEATING LABELS OR NAME-PLATES LIGHT SOURCES NOT OTHERWISE PROVIDED FOR LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATINGELEMENTS LIGHTING MECHANICAL ENGINEERING NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE PHYSICS SEALS SEMICONDUCTOR DEVICES SIGNS STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHERARTICLES, NOT OTHERWISE PROVIDED FOR WEAPONS
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Beschreibung
Zusammenfassung:	An initially flat light sheet is formed by printing conductor layers and microscopic LEDs over a flexible substrate to connect the LEDs in parallel. The light sheet is then subjected to a molding process which forms 3-dimensional features in the light sheet, such as bumps of any shape. The features may be designed to create a desired light emission profile, increase light extraction, and/or create graphical images. In one embodiment, an integrated light sheet and touch sensor is formed, where the molded features convey touch positions of the sensor. In one embodiment, a curable resin is applied to the light sheet to fix the molded features. In another embodiment, optical features are molded over the flat light sheet. In another embodiment, each molded portion of the light sheet forms a separate part that is then singulated from the light sheet.