OLED display panel, display device, and manufacturing method of display panel

The invention provides an OLED display panel, a display device and a manufacturing method of the display panel. The OLED display panel comprises an anode layer, an organic functional layer and a cathode layer, wherein the organic functional layer comprises: a hole transport layer made of a hole transport material, and the hole transport layer is doped with a hole trap material. According to the display panel, the hole transport layer is doped with the hole trap material, and the hole trap material can capture a small amount of holes injected through an anode, thereby improving the operating current of the OLED display panel under a low gray level, and solving the problem that the contrast of an OLED display screen in the prior art decreases under a zero gray level, and luminance is un-uniform under the low gray level. 本发明提供种OLED显示面板、显示装置及显示面板的制造方法。该OLED显示面板包括阳极层、有机功能层和阴极层，其中所述有机功能层包括：由空穴传输材料制成的空穴传输层，其中所述空穴传输层内掺杂有空穴陷阱材料。该显示面板通过在空穴传输层内掺杂有空穴陷阱材料，空穴陷阱材料能够捕获通过阳极注入的少量空穴，从而提高OLED显示面板在低灰阶下的工作电流，解决现有技术的OLED显示屏幕在零灰阶下显示