A printed light-emitting diode display device and its manufacturing method

Abstract

The invention discloses a printed type light-emitting diode display device and a manufacturing method thereof. The manufacturing method comprises the steps of: A, manufacturing a conductive thin film on a substrate provided with TFT arrays, and forming bottom electrodes connected with drains of the TFT arrays on the substrate through a picture composition process; B, coating a layer of negative photoresist containing black dye on the substrate, and forming Banks of subpixels on the periphery of the bottom electrode through the picture composition process; C, coating a layer of positive photoresist containing black dye on the substrate, and forming isolating columns used for isolating each row of the subpixels on the Banks of the subpixels through the picture composition process; D, depositing functional layers in the middle of a light-emitting diode in sequence in the subpixel rows by utilizing a printing process; E, and manufacturing conductive thin films on the top parts of the functional layers in the middle to form top electrodes. The printed type light-emitting diode display device and the manufacturing method thereof solve the color crosstalk problem by manufacturing a series of the isolating columns on Banks of the subpixels, enhance the display effect and product yield, and improve output efficiency.

Description

technical field [0001] The invention relates to the field of display devices, in particular to a printed light-emitting diode display device and a manufacturing method thereof. Background technique [0002] In the contemporary information society, the importance of display devices as a visual information transmission medium is further strengthened. In order to occupy a dominant position in the future, display devices are moving towards lighter, thinner, lower energy consumption, lower cost and better Trends in image quality. [0003] Organic electroluminescent diode (OLED) has the advantages of self-illumination, fast response, wide viewing angle, high brightness, light and thin, etc., while quantum dot light-emitting diode (QLED) has the advantages of high light color purity, high luminous quantum efficiency, easy to adjust luminous color, and easy to use. These two are the two main directions of display device research at present. The preparation process of OLED mainly i...

AI Technical Summary

Problems solved by technology

[0006] In view of the above-mentioned deficiencies in the prior art, the object of the present invention is to provide a printed light-emitting diode display device and its manufacturing method, aiming to solve the problems of color crosstalk and color mixing that are prone to occur in the production process of the existing printed light-emitting diodes.

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