OLED display panel to reduce light leakage and method for manufacturing the same, and display device

A display apparatus, comprising a driving unit and an OLED display panel, wherein the driving unit provides a driving signal to the OLED display panel to make the OLED display panel display an image, and the OLED display panel comprises:

• a TFT array substrate;
• a plurality of anodes disposed in an array on the TFT array substrate;
• a pixel defining layer disposed on the TFT array substrate, wherein the pixel defining layer comprises a plurality of opening portions exposing the anodes and a plurality of spacing portions, wherein each spacing portion of the plurality of spacing portions is formed between two adjacent anodes, and each opening portion of the plurality of opening portions corresponds to one sub-pixel area;
• a first common layer for transferring holes, a second common layer for transferring electrons and a cathode layer sequentially disposed on the pixel defining layer;
• a light emitting material disposed between the first common layer and the second common layer, wherein the light emitting material is disposed to correspond to each sub-pixel area;
• and
• a hole blocking portion disposed directly on a spacing portion of the plurality of spacing portions of the pixel defining layer to divide the first common layer between two adjacent sub-pixel areas.