Quantum dot display panel and manufacturing method thereof

Abstract

The invention discloses a quantum dot display panel and manufacturing method thereof. The quantum dot display panel includes a substrate, a pixel electrode located in a substrate pixel electrode pattern region, a pixel bank layer in a peripheral region of the pixel electrode, a residual pixel bank layer on the pixel electrode, an electron transport layer, a quantum dot luminous layer, a hole transport layer, a hole injection layer and an anode layer in sequence from bottom to top. A residual bank film on the pixel electrode during pixel bank manufacture is used as an electron blocking layer, a QLED of an inverted structure is manufactured, due to an insulating characteristic of the bank film, charge injection of the pixel electrode to the QLED device is reduced, thereby achieving electron and hole injection balance in the QLED, improving device performance, at the same time, the problem of removing the residual bank film and the problem of easy color mixing caused by the process can also be avoided, the manufacturing cost is reduced, and the yield is improved.

Description

technical field [0001] The invention relates to the technical field of displays, in particular to a quantum dot display panel and a manufacturing method thereof. Background technique [0002] Semiconductor quantum dots have excellent characteristics such as high light color purity, high luminous quantum efficiency, adjustable luminous color, and long service life. These characteristics make quantum dot light-emitting diodes (QLEDs) with quantum dot materials as the light-emitting layer have broad application prospects in solid-state lighting, flat panel display and other fields, and have attracted extensive attention from academia and industry. [0003] In recent years, through the improvement of quantum dot material synthesis process and the optimization of device structure, the performance of QLED has been greatly improved. However, due to the deep energy level of quantum dot material, it is difficult to inject holes and easy to inject electrons, resulting in carrier Imba...

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Problems solved by technology

[0005] In view of the above-mentioned deficiencies in the prior art, the object of the present invention is to provide a quantum dot display panel and a manufacturing method thereof, aiming at solving the problem that the removal of the residual pixel bank layer in the existing method will affect the performance of later devices, and the process of removing the residual pixel bank layer It will increase the production cost and the problem of easy color mixing

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