Organic light-emitting diode device, manufacturing method thereof and evaporation equipment
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United States of America Patent
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Jul 7, 2020
Grant Date -
Nov 9, 2017
app pub date -
Jun 20, 2017
filing date -
Feb 3, 2015
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Abstract
The present disclosure provides an organic light-emitting diode (OLED) device, comprising at least two electron transport layers between a cathode and a light-emitting layer of the device, wherein energy barrier of different electron transport layers successively increase from the cathode to the light-emitting layer. The present disclosure also provides an evaporation equipment and an OLED device manufacturing method, wherein the electron transport layers of the OLED device are formed by an evaporation process using the evaporation equipment. The OLED device of the present disclosure improves the luminescence efficiency of OLED devices, and the evaporation equipment can readily effect a fast switching between different evaporation rates within a same evaporation chamber.
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