Molded LED light sheet
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United States of America Patent
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Oct 3, 2017
Issued Date -
N/A
app pub date -
May 30, 2014
filing date -
Jun 4, 2013
priority date (Note) -
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status (Latency Note)
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Abstract
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.
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Cited Art Landscape
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