Abstract: An electroluminescent device and a display apparatus, for improving the efficiency and prolonging the service life of the electroluminescent device. The electroluminescent device comprises: an anode comprising a reflective material; a cathode arranged opposite to the anode and comprising a transflective material; n light-emitting functional layers laminated between the anode and the cathode, wherein n is an integer greater than 1; and each light-emitting functional layer comprises a light-emitting layer and an electron transport layer located at the side of the light-emitting layer close to the cathode, wherein the thickness of the electron transport layer in the light-emitting functional layer closest to the cathode is greater than that of the electron transport layers in the remaining light-emitting functional layers; and (n?1) charge generation layers located between two adjacent light-emitting functional layers.

Abstract: A display substrate, a manufacturing method thereof, and a display device are provided. The display substrate includes a base substrate and a white OLED display unit on the base substrate, and further includes: an optical adjustment structure on a light emitting side of the white OLED display unit, where the optical adjustment structure is in a peripheral region of each pixel region. The optical adjustment structure is configured to absorb light in a first wavelength range or convert light in a first wavelength range into light in a second wavelength range.

Abstract: An organic light-emitting diode (OLED) includes: a first electrode, a first light-emitting layer disposed on a side of the first electrode, a charge generation layer disposed on a side, away from the first electrode, of the first light-emitting layer, a second light-emitting layer disposed on a side, away from the first light-emitting layer, of the charge generation layer, and a second electrode disposed on a side, away from the charge generation layer, of the second light-emitting layer. The OLED further includes: a process conversion layer, disposed between the first electrode and the second electrode, and configured to fill an uneven region between the first electrode and the second electrode.

Abstract: The present disclosure provides an organic electroluminescent device, a display panel and a display device, including a first electrode, a first light-emitting layer, a first electron transport layer, an N-type charge generation layer, a P-type charge generation layer, a first hole transport layer, a second light-emitting layer and a second electrode that are stacked; where the N-type charge generation layer includes a host electron transport material and a first guest electron transport material having a set matching energy level there between.

Abstract: An organic light-emitting diode (OLED) includes: a first electrode, a first light-emitting layer disposed on a side of the first electrode, a charge generation layer disposed on a side, away from the first electrode, of the first light-emitting layer, a second light-emitting layer disposed on a side, away from the first light-emitting layer, of the charge generation layer, and a second electrode disposed on a side, away from the charge generation layer, of the second light-emitting layer. The OLED further includes: a process conversion layer, disposed between the first electrode and the second electrode, and configured to fill an uneven region between the first electrode and the second electrode.

Abstract: A display substrate, a manufacturing method thereof, and a display device are provided. The display substrate includes a base substrate and a white OLED display unit on the base substrate, and further includes: an optical adjustment structure on a light emitting side of the white OLED display unit, where the optical adjustment structure is in a peripheral region of each pixel region. The optical adjustment structure is configured to absorb light in a first wavelength range or convert light in a first wavelength range into light in a second wavelength range.

Abstract: A pixel unit, a display panel, a display device and a method of manufacturing a pixel unit. The pixel unit includes a first sub-pixel unit and a second sub-pixel unit, each sub-pixel unit includes a first electrode, an emission layer, and a second electrode stacked on a substrate. An emission lifespan of the emission layer of the first sub-pixel unit is smaller than that of the emission layer of the second sub-pixel unit. An area of an orthographic projection of the emission layer of the first sub-pixel unit on the substrate is equal to that of the emission layer of the second sub-pixel unit on the substrate. An area of an orthographic projection of the first electrode of the first sub-pixel unit on the substrate is greater than an area of an orthographic projection of the first electrode of the second sub-pixel unit on the substrate.

Abstract: A crucible. The crucible includes a crucible body having an opening formed at the top thereof. The crucible further includes a sealing cover and an elastic element. The sealing cover is configured to seal the crucible in a first position and open the crucible in a second position. In the first position, the sealing cover forms a detachable sealed connection with the crucible body. The elastic element is arranged between the sealing cover and the crucible body, where the elastic element is in a compressed state when the crucible is sealed by the sealing cover in the first position. Correspondingly, the present disclosure also provides an evaporation preparation device, evaporation equipment and an evaporation method. The present disclosure can reduce the deterioration of the material to be evaporated and the direct contact between human body and the material.

Abstract: A pixel unit, a display panel, a display device and a method of manufacturing a pixel unit. The pixel unit includes a first sub-pixel unit and a second sub-pixel unit, each sub-pixel unit includes a first electrode, an emission layer, and a second electrode stacked on a substrate. An emission lifespan of the emission layer of the first sub-pixel unit is smaller than that of the emission layer of the second sub-pixel unit. An area of an orthographic projection of the emission layer of the first sub-pixel unit on the substrate is equal to that of the emission layer of the second sub-pixel unit on the substrate. An area of an orthographic projection of the first electrode of the first sub-pixel unit on the substrate is greater than an area of an orthographic projection of the first electrode of the second sub-pixel unit on the substrate.

Abstract: The present disclosure provides a crucible. The crucible includes a crucible body having an opening formed at the top thereof. The crucible further includes a sealing cover and an elastic element. The sealing cover is configured to seal the crucible in a first position and open the crucible in a second position. In the first position, the sealing cover forms a detachable sealed connection with the crucible body. The elastic element is arranged between the sealing cover and the crucible body, where the elastic element is in a compressed state when the crucible is sealed by the sealing cover in the first position. Correspondingly, the present disclosure also provides an evaporation preparation device, evaporation equipment and an evaporation method. The present disclosure can reduce the deterioration of the material to be evaporated and the direct contact between human body and the material.

Abstract: A packaging structure is provided. The packaging structure includes a substrate and a packaging cover plate which are disposed opposite to each other. The substrate includes a first limiting member arranged at one side of the substrate close to the packaging cover plate. The packaging cover plate includes a second limiting member arranged at one side of the packaging cover plate close to the substrate, and the first limiting member and the second limiting member are engaged with each other to fix the substrate and the packaging cover plate.

Abstract: An evaporation apparatus comprises an evaporation chamber (2) and a moving device (3); the evaporation chamber (2) is provided with an evaporation source (21) therein and is provided with two regulating plates (22) on a side wall thereof; the moving device (3) is disposed on the bottom of the evaporation chamber (2). An evaporation method by use of the evaporation apparatus is also disclosed.

Abstract: The disclosure relates to a hermetic sealed crucible comprising a crucible body with a cavity for placing materials, a cover plate for covering and sealing the cavity. The crucible further comprises a pneumatic driver which is connected to the cover plate and drives the cover plate to move relative to the cavity. The pneumatic device comprises a cylinder in which a spacer is arranged, the spacer being configured to move relative to the cylinder and divide the cylinder into a first air chamber provided with a first valve, and a second air chamber provided with a second valve, the spacer being provided with a drive rod connected to the cover plate at a side in the first air chamber, the drive rod being configured to drive the cover plate to move to close or open the cavity. The disclosure further relates to a vapor deposition method using the crucible.

Abstract: An evaporation apparatus comprises an evaporation chamber (2) and a moving device (3); the evaporation chamber (2) is provided with an evaporation source (21) therein and is provided with two regulating plates (22) on a side wall thereof; the moving device (3) is disposed on the bottom of the evaporation chamber (2). An evaporation method by use of the evaporation apparatus is also disclosed.