Abstract: An organic light-emitting diode (OLED) display panel and an OLED display device are provided. The OLED display panel comprises a first substrate; a first electrode layer disposed on the first substrate and including a plurality of first electrodes; a hole transport layer disposed on a surface of the first electrode layer far away from the first substrate, and formed by a first hole transport material and a second hole transport material having different carrier mobility; a plurality of light-emitting devices disposed on a surface of the hole transport layer far away from the first electrode layer and arranged in correspondence with the plurality of first electrodes respectively; an electron transport layer disposed on a surface of the plurality of light-emitting devices far away from the hole transport layer; and a second electrode layer disposed on a surface of the electron transport layer far away from the plurality of light-emitting devices.

Abstract: An organic light-emitting diode (OLED) display panel and an OLED display device are provided. The (OLED) display panel includes a first substrate; a first electrode layer disposed on the first substrate and including a plurality of first electrodes; a plurality of light-emitting devices disposed on a surface of the first electrode layer far away from the first substrate and having m number of colors, where m is a positive integer; and a second electrode layer disposed on a surface of the plurality of light-emitting devices far away from the first electrode layer. One light-emitting device corresponds to one color, and given a predetermined value of brightness, the light-emitting devices of two different colors are configured to have a predetermined absolute value of a threshold voltage difference.

Abstract: A vacuum evaporation device, a vacuum evaporation method, and an organic light-emitting display panel are provided. The vacuum evaporation device comprises at least a first evaporation chamber. The first evaporation chamber includes at least one first organic material evaporation source and at least one first metal evaporation source. The at least one first organic material evaporation source is configured to evaporate a first organic material, and the at least one first metal evaporation source is configured to evaporate a first metal material. The at least one first organic material evaporation source and the at least one first metal evaporation source are controlled to perform evaporation simultaneously to generate blend doping of a first organic material and a first metal material on a substrate disposed within the first evaporation chamber.

Abstract: An organic light-emitting diode (OLED) display panel and an OLED display device are provided. The (OLED) display panel comprises a first substrate; a first electrode layer disposed on the first substrate and including a plurality of first electrodes; a plurality of light-emitting devices disposed on a surface of the first electrode layer far away from the first substrate and having m number of colors, where m is a positive integer, wherein one light-emitting device corresponds to one color, and given a predetermined value of brightness, the light-emitting devices of two different colors are configured to have a predetermined absolute value of a threshold voltage difference; and a second electrode layer disposed on a surface of the plurality of light-emitting devices far away from the first electrode layer.

Abstract: An organic light-emitting diode (OLED) display panel and an OLED display device are provided. The OLED display panel comprises a first substrate; a first electrode layer disposed on the first substrate and including a plurality of first electrodes; a hole transport layer disposed on a surface of the first electrode layer far away from the first substrate, and formed by a first hole transport material and a second hole transport material having different carrier mobility; a plurality of light-emitting devices disposed on a surface of the hole transport layer far away from the first electrode layer and arranged in correspondence with the plurality of first electrodes respectively; an electron transport layer disposed on a surface of the plurality of light-emitting devices far away from the hole transport layer; and a second electrode layer disposed on a surface of the electron transport layer far away from the plurality of light-emitting devices.

Abstract: A vacuum evaporation device, a vacuum evaporation method, and an organic light-emitting display panel are provided. The vacuum evaporation device comprises at least a first evaporation chamber. The first evaporation chamber includes at least one first organic material evaporation source and at least one first metal evaporation source. The at least one first organic material evaporation source is configured to evaporate a first organic material, and the at least one first metal evaporation source is configured to evaporate a first metal material. The at least one first organic material evaporation source and the at least one first metal evaporation source are controlled to perform evaporation simultaneously to generate blend doping of a first organic material and a first metal material on a substrate disposed within the first evaporation chamber.