Organic light emitting diode display panel and manufacturing method thereof
View Patent ↗An organic light emitting diode (OLED) display panel includes a thin film transistor (TFT) array substrate; an OLED light-emitting layer; an encapsulation layer; an inducing layer disposed on a light-emitting side of the OLED light-emitting layer; a micro lens array film disposed over the inducing layer; and an organic hydrophobic layer disposed between the inducing layer and the micro lens array film. By providing the organic hydrophobic layer with strong hydrophobic performance, a surface with a large water contact angle is provided for a subsequent formation of the micro lens array film, thereby improving an optical coupling ratio of the micro lens, and improving luminous efficiency of the OLED light emitting layer.
1. An organic light emitting diode (OLED) display panel, comprising:
a thin film transistor (TFT) array substrate;
an OLED light-emitting layer disposed on the TFT array substrate;
an encapsulation layer disposed over the OLED light-emitting layer;
an inducing layer disposed on a light-emitting side of the OLED light-emitting layer;
a micro lens array film disposed over the inducing layer; and
an organic hydrophobic layer disposed between the inducing layer and the micro lens array film, wherein the organic hydrophobic layer is disposed on a surface of the inducing layer, and molecular structure of the organic hydrophobic layer is arranged in a direction perpendicular to the TFT array substrate, and an outer molecule of the organic hydrophobic layer is a hydrophobic group.
2. The OLED display panel as claimed in claim 1 , wherein the OLED light-emitting layer comprises sub-pixels disposed on the TFT array substrate arranged in an array.
3. The OLED display panel as claimed in claim 2 , wherein the inducing layer is disposed between the TFT array substrate and the sub-pixels.
4. The OLED display panel as claimed in claim 2 , wherein the inducing layer is disposed between the sub-pixels and the encapsulation layer.
5. A manufacturing method of an organic light emitting diode (OLED) display panel, comprising:
S 10 , providing a thin film transistor (TFT) array substrate, and forming an OLED light-emitting layer on the TFT array substrate;
S 20 , forming an inducing layer on the OLED light-emitting layer;
S 30 , forming an organic hydrophobic layer on a surface of the inducing layer by atomic layer deposition, wherein the S 30 comprises:
depositing at least two precursor compounds alternately on the surface of the inducing layer to obtain a polymer grown perpendicular to the TFT array substrate; and
controlling an outer molecule of the polymer to be a hydrophobic group to form the organic hydrophobic layer;
S 40 , forming a micro lens array film on a surface of the organic hydrophobic layer; and
S 50 , forming an encapsulation layer on the micro lens array film.
6. The manufacturing method as claimed in claim 5 , wherein the S 40 comprises:
forming an array of pre-polymer droplets on the surface of the organic hydrophobic layer by ink jet printing; and
curing the pre-polymer droplets to obtain the micro lens array film.
7. The manufacturing method as claimed in claim 5 , wherein the inducing layer is made from amino thiol compounds.