Display panel, preparation method and display device

A display panel, comprising:

• a substrate;
• and
• a display layer disposed on a side of the substrate, wherein the display layer comprises a pixel defining layer and a plurality of light-emitting elements, wherein the pixel defining layer comprises a plurality of pixel openings, and each of the plurality of light-emitting elements comprises a light-emitting layer;
• and
• wherein a ratio of a length of the light-emitting layer in a first direction to a length of the light-emitting layer in a second direction is greater than a ratio of a length of a pixel opening corresponding to the light-emitting layer in the first direction to a length of the pixel opening corresponding to the light-emitting layer in the second direction;
• wherein the display panel further comprises a plurality of first sub-pixels and a plurality of second sub-pixels, wherein the plurality of first sub-pixels and the plurality of second sub-pixels form a second virtual trapezoid, centers of the plurality of second sub-pixels are located at first vertices of the second virtual trapezoid, and centers of the plurality of first sub-pixels are located at second vertices of the second virtual trapezoid, wherein the first vertices and the second vertices alternate and are spaced apart;
• and the second virtual trapezoid comprises a second long side, a third oblique side, a second short side, and a fourth oblique side, and the second long side of the second virtual trapezoid extends in a second direction.

A preparation method of a display panel, comprising:

• providing a substrate and an evaporation source,
• wherein the substrate and the evaporation source move relative to each other in a third direction, and a plurality of first sub-pixels are evaporated on the substrate;
• the substrate and the evaporation source move relative to each other in the third direction, and a plurality of second sub-pixels are evaporated on the substrate;
• the plurality of first sub-pixels and the plurality of second sub-pixels form a second virtual trapezoid, centers of the plurality of second sub-pixels are located at first vertices of the second virtual trapezoid, centers of the plurality of first sub-pixels are located at second vertices of the second virtual trapezoid, and the first vertices and the second vertices alternate and are spaced apart;
• and
• the second virtual trapezoid comprises a second long side, a third oblique side, a second short side, and a fourth oblique side, wherein the second long side of the second virtual trapezoid extends in a second direction, and an included angle between the third direction and the second direction is within a second preset range.

A display device, comprising the display panel, wherein the display panel comprises:

• a plurality of first sub-pixels, a plurality of second sub-pixels, and a plurality of third sub-pixels,
• wherein the plurality of third sub-pixels forms a first virtual trapezoid, centers of the plurality of third sub-pixels are respectively located at vertices of the first virtual trapezoid, and a first sub-pixel of the plurality of first sub-pixels is located inside the first virtual trapezoid;
• the plurality of first sub-pixels and the plurality of second sub-pixels form a second virtual trapezoid, centers of the plurality of second sub-pixels are located at first vertices of the second virtual trapezoid, centers of the plurality of first sub-pixels are located at second vertices of the second virtual trapezoid, the first vertices and the second vertices alternate and are spaced apart, and a third sub-pixel of the plurality of third sub-pixels is located inside the second virtual trapezoid;
• the first virtual trapezoid comprises a first long side, a first oblique side, a first short side, and a second oblique side, wherein the first long side, the first oblique side, the first short side and the second oblique side are sequentially connected;
• and the second virtual trapezoid comprises a second long side, a third oblique side, a second short side, and a fourth oblique side, wherein the second long side, the third oblique side, the second short side and the fourth oblique side are sequentially connected;
• and
• the first long side and the first oblique side form a first included angle, and the first long side and the second oblique side form a second included angle;
• the second long side and the third oblique side form a third included angle, and the second long side and the fourth oblique side form a fourth included angle,
• wherein a sum of the first included angle and the second included angle is a first angle, a sum of the third included angle and the fourth included angle is a second angle, a difference between the first angle and the second angle is within a first preset range, and an absolute value of the first preset range is greater than or equal to 0° and less than or equal to 10°.