Each OLED lighting element includes a portion of an organic multilayer sandwiched by a first electrode and a second electrode, where the organic multilayer includes a hole transport layer, a light-emitting layer and an electron transport layer that are stacked in evaporation sequence. In order to increase the display resolution on a fixed size substrate, or to shrink a display dimension while keeping the display resolution, combining a white OLED formed by organic multiple layers with an RGB color filter becomes a viable solution, where the organic multiple layers are continuously deposited onto the OLED substrate without shadow mask and without breaking vacuum. However, due to the high conductivity of the hole transport layer, the lateral leakage current occurs through the hole transport layer whenever a voltage difference between adjacent sub-pixel presents. The lateral leakage current will reduce the signal voltage in each sub-pixel, and result in blurred display image and reduced color gamut in the display image.
The present disclosure provides a display apparatus and a method of manufacturing the same, aiming to reduce the lateral leakage current between adjacent OLED lighting elements.
In a first aspect, an embodiment of the present disclosure provides a display apparatus, including a substrate, a first electrode layer and a second electrode layer. The display apparatus further includes an organic multilayer including a first-type carrier auxiliary layer, a light-emitting layer and a second-type carrier auxiliary layer.
The substrate includes a matrix of pixel driving circuit, pixel selection means, data writing and reset means, and a plurality of power supply lines.