CPC H01L 51/5256 (2013.01) [H01L 51/56 (2013.01)] | 18 Claims |
1. A display panel comprising,
a display substrate;
a plurality of light emitting units on the display substrate; and
a first organic layer covering the plurality of light emitting units;
wherein a surface of the first organic layer opposite from the light emitting units comprises a plurality of raised portions and a plurality of recessed portions, and the first organic layer is directly in contact with the plurality of light emitting units;
the display panel further includes a first inorganic layer, a second organic layer, a second inorganic layer, and a third organic layer;
the first organic layer, the first inorganic layer, the second organic layer, the second inorganic layer, and the third organic layer are sequentially arranged in a direction away from the display substrate;
the first inorganic layer, the second organic layer, and the second inorganic layer conform to a surface profile formed by the plurality of raised portions and the plurality of recessed portions, and the third organic layer has a flat top surface at a side of the third organic layer opposite from the display substrate;
a Young's modulus of the first organic layer is not larger than a Young's modulus of the second organic layer;
the display panel further includes a dam structure, and the plurality of light emitting units is surrounded by the dam structure;
there is an edge area between an edge of the first organic layer and a front edge of the dam structure, and the first inorganic layer and the second inorganic layer are in contact with each other in the edge area; and
the first organic layer and the second organic layer form bank angles less than 90 degree to transit to the edge area.
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