Abstract: An evaporation source includes a casing, a crucible configured to receive evaporation material, a spray nozzle, a first heating wire, and a lifting mechanism. The casing includes a first end, a second end opposite the first end, and a transmission chamber disposed between the first end and the second end. The evaporation material forms a heating surface on a surface in the crucible when the evaporation material is heated in the crucible. The crucible is disposed in the casing and is positioned at the second end. The crucible is in communication with the transmission chamber. The spray nozzle is disposed at the first end and is in communication with the transmission chamber. The first heating wire is directly fixed in the casing and the first heating wire is positioned between the crucible and the spray nozzle. The lifting mechanism is movably connected to the casing.

Abstract: An OLED pixel arrangement structure includes multiple first sub-pixels, multiple second sub-pixels and multiple third sub-pixels. Four adjacent ones of the first sub-pixels and four adjacent ones of the second sub-pixels are alternately arranged and surround one of the third sub-pixels. Centers of the four adjacent first sub-pixels and centers of the four adjacent second sub-pixels form vertexes of a virtual octagonal cell, and the virtual octagonal cell has at least two orthogonal symmetry axes, a basic pixel unit is formed by the first sub-pixels and the second sub-pixels forming the virtual octagonal cell and a part of the third sub-pixel inside the virtual octagonal cell which are located on one side of one of the at least two orthogonal symmetry axes of the virtual octagonal cell. A center of the third sub-pixel coincides with a center of the virtual octagonal cell.

Abstract: An OLED pixel arrangement structure includes multiple first sub-pixels, multiple second sub-pixels and multiple third sub-pixels. Four adjacent ones of the first sub-pixels and four adjacent ones of the second sub-pixels are alternately arranged and surround one of the third sub-pixels. Centers of the four adjacent first sub-pixels and centers of the four adjacent second sub-pixels form vertexes of a virtual octagonal cell, and the virtual octagonal cell has at least two orthogonal symmetry axes, a basic pixel unit is formed by the first sub-pixels and the second sub-pixels forming the virtual octagonal cell and a part of the third sub-pixel inside the virtual octagonal cell which are located on one side of one of the at least two orthogonal symmetry axes of the virtual octagonal cell. A center of the third sub-pixel coincides with a center of the virtual octagonal cell.