OLED Display Panel
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United States of America Patent
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Issued Date -
May 25, 2017
app pub date -
Nov 22, 2016
filing date -
Nov 25, 2015
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Abstract
The present invention discloses an OLED display panel, which is achieved by providing an electron cushion layer between the blue sub-pixel light emitting layer and the electron transport layer to prevent the accumulation of electrons on the interface of the emitting layer, thus the lifetime of the blue sub-pixel of the OLED panel and the phenomenon of offset of white chromaticity coordinate of the OLED display panel caused by excessive attenuation of luminance of the blue sub-pixel are improved, so that the lifetime of the OLED display panel is increased; further the present invention uses different materials of the electron transport layer for RGB sub-pixels, by virtue of selecting the material of the electron transport layer which is most favorable to the lifetime of RGB sub-pixels according to the material of each sub-pixel light emitting layer, to improve the lifetime of the blue sub-pixel of the OLED panel.
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