| abstract |
The invention provides an OLED device, a preparation method thereof, and an OLED display panel, which relate to the field of display technology and can improve the color stability of the OLED device. The OLED device comprises an anode disposed on a substrate, a cathode, a hole transport layer and an electron transport layer disposed between the anode and the cathode, and at least two light-emitting layers disposed between the hole transport layer and the electron transport layer , wherein the above-mentioned at least two light-emitting layers are used to emit white light; further, the OLED device further includes an electron blocking layer disposed between the electron-transporting layer and the above-mentioned at least two light-emitting layers. Used to improve the color stability of OLED devices. |