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Organic electroluminescent display panel and method for manufacturing the same

  • US 10,461,137 B2
  • Filed: 11/17/2017
  • Issued: 10/29/2019
  • Est. Priority Date: 03/29/2017
  • Status: Active Grant
First Claim
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1. An organic electroluminescent display panel, comprising a substrate, and a pixel defining layer and a light emitting layer on the substrate, wherein:

  • the pixel defining layer comprises a first pixel defining layer on the substrate, a second pixel defining layer on the first pixel defining layer, and a third pixel defining layer between the first pixel defining layer and the second pixel defining layer;

    the first pixel defining layer comprises a plurality of first opening areas, each of which defines a sub-pixel light emitting area, and the light emitting layer is arranged in the plurality of first opening areas;

    the second pixel defining layer comprises a plurality of second opening areas, each of which defines a virtual pixel area comprising at least two adjacent sub-pixel light emitting areas in a same color; and

    the third pixel defining layer comprises a plurality of third opening areas corresponding to the plurality of first opening areas in a one-to-one manner, and each of the plurality of third opening areas is not larger than a corresponding first opening area;

    wherein respective virtual pixel areas defined by the plurality of second opening areas comprise a same number of sub-pixel light emitting areas; and

    virtual pixel areas containing red sub-pixel light emitting areas, virtual pixel areas containing green sub-pixel light emitting areas, and virtual pixel areas containing blue sub-pixel light emitting areas are disposed alternately in each row of the respective virtual pixel areas; and

    wherein sidewalls of respective first opening areas, respective second opening areas, and respective third opening areas are sloped, top areas of the respective first opening areas and the respective third opening areas are smaller than their corresponding bottom areas, and top areas of the respective second opening areas are greater than their corresponding bottom areas.

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