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Preparation method of OLED light-emitting substrate and OLED light-emitting device

A substrate and film layer technology, which is applied in the manufacture of semiconductor devices, electrical solid devices, semiconductor/solid devices, etc., can solve the problems of uneven interface morphology, insufficient compactness, and uneven film formation of the ink layer Smooth appearance, improve compactness and uniformity, and improve film formation

Active Publication Date: 2020-05-05
SHENZHEN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD
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Problems solved by technology

[0005] The embodiment of the present invention provides a method for preparing an OLED light-emitting substrate and an OLED light-emitting device, which are used to solve the technical problems of uneven interface morphology, insufficient compactness, and uneven film formation of the ink layer in the existing inkjet printing technology

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  • Preparation method of OLED light-emitting substrate and OLED light-emitting device
  • Preparation method of OLED light-emitting substrate and OLED light-emitting device

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Embodiment Construction

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Apparently, the described embodiments are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts fall within the protection scope of the present invention.

[0028] In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " Orientation indicated by rear, left, right, vertical, horizontal, top, bottom, inside, outside, clockwise, counterclockwise, etc. The positional relationship is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the pr...

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Abstract

The invention discloses a preparation method of an OLED light-emitting substrate and an OLED light-emitting device. The preparation method comprises the steps: evaporating or ink-jet printing a firstfilm layer in a limited area of a pixel limiting layer; carrying out jet printing on the surface of the first film layer by adopting an ink-jet printing process to form an ink wet film; heating and drying the ink wet film to form an ink dry film; and pressurizing the ink dry film to form a second film layer, and obtaining the OLED light-emitting substrate. According to the method, a pressurizing process is added after drying treatment, so that the interface morphology of the newly prepared second film layer becomes flat under the action of pressure, the compactness and uniformity of the film layer are improved, the film-forming property and luminous efficiency of the OLED light-emitting device prepared by ink-jet printing are improved, and the service life of the OLED light-emitting deviceis prolonged.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a method for preparing an OLED light-emitting substrate and an OLED light-emitting device. Background technique [0002] Inkjet Printing (Inkjet Printing) Organic Light-Emitting Diode (OLED), Quantum Dot Light Emitting Diodes (QLED) and Quantum Dot (QD) + Micro Light Emitting Diodes (Micro Light Emitting Diodes) , Micro LED) light-emitting devices are the development direction of future displays. [0003] Using inkjet printing technology, the luminescent material can be precisely printed in the range defined by the pixel defining layer through the nozzle of the printer, and the thickness of the film can be controlled by adjusting the concentration of the solute. Compared with the current solution of evaporating organic matter, this solution has several significant advantages: 1. Save material, and can only print functional materials in the area required for light emission, with...

Claims

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Application Information

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IPC IPC(8): H01L51/56H01L51/50
CPCH10K71/20H10K71/135H10K50/115H10K50/15H10K50/16H10K50/17H10K50/171H10K71/00
Inventor 陈黎暄
Owner SHENZHEN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD
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