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Inkjet printing method and device, and manufacturing method of display substrate

An inkjet printing equipment and display substrate technology, which is applied in printing devices, printing, semiconductor/solid-state device manufacturing, etc., can solve the problems of uneven film formation in the display area and different atmosphere concentrations, and achieve uniform and uniform film thickness Effect

Active Publication Date: 2016-03-30
BOE TECH GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention provides an inkjet printing method and equipment, and a manufacturing method of a display substrate, which are used to solve the problem that the concentration of the atmosphere above the display substrate is different during the process of evaporating the solvent when the film layer of the display substrate is formed by inkjet printing technology, resulting in The problem of uneven film formation

Method used

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  • Inkjet printing method and device, and manufacturing method of display substrate
  • Inkjet printing method and device, and manufacturing method of display substrate
  • Inkjet printing method and device, and manufacturing method of display substrate

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Embodiment 2

[0063] An embodiment of the present invention also provides a method for manufacturing a display substrate, the method includes the step of forming a thin film for preparing a display layer pattern in the display area on the display substrate, and using the inkjet printing method in Embodiment 1 to print on the display A thin film is formed on the substrate.

[0064] The thickness of the thin film formed by the inkjet printing method is uniform, which effectively improves the quality of the display substrate. At the same time, because the second solvent is used to print the peripheral area in the present invention, the peripheral area can be the area where the leads are originally arranged; in addition, since the second solvent is used to print the peripheral area in the present invention, the entire display substrate can In the case that the concentration of the atmosphere above is roughly the same, the size of the peripheral area can be much smaller than the printing area in...

Embodiment 3

[0067] Based on the same inventive concept, an embodiment of the present invention also provides an inkjet printing device for forming a thin film on a display substrate.

[0068] combine Figure 4 and Figure 6 As shown, the inkjet printing equipment includes:

[0069] The first nozzle 1 and the second nozzle 2;

[0070] The first alignment device 10 is used to align the nozzle 11 of the first shower head 1 above the display area BB of the display substrate 3;

[0071] The second alignment device 20 is used to align the nozzle 21 of the second shower head 2 above the peripheral area CC of the display substrate 3;

[0072] The control device 30 is used to control the first spray head 1 to ink-jet print a solution in the display area BB of the display substrate 3 when forming a thin film for preparing the display layer pattern of the display area CC. The solution is dissolved by the material forming the thin film. Prepared in a solvent, and control the second spray head 2 t...

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Abstract

The invention relates to the technical field of film preparation, and discloses an inkjet printing method and equipment, and a method for manufacturing a display substrate. The inkjet printing device includes a first nozzle and a second nozzle, through which a solution is inkjet printed on a display area of ​​a display substrate through the first nozzle, the solution is prepared by dissolving a film-forming material in a first solvent, and through the second nozzle The second nozzle inkjet prints the second solvent in the peripheral area outside the display area. When the first solvent in the solution is evaporated to form a thin film, the second solvent will also be evaporated, so that the atmosphere concentration in the display area and the peripheral area is roughly the same. The volatilization speed of the solvent on the substrate is approximately the same, so that the film thickness of the formed film is uniform. Since the second solvent will be evaporated, it will not affect the manufacturing process of the display substrate. Since it is no longer necessary to increase the printing area, it is possible to achieve a narrow frame while ensuring a uniform film thickness to form a thin film.

Description

technical field [0001] The invention relates to the technical field of film preparation, in particular to an inkjet printing method and equipment, and a method for manufacturing a display substrate. Background technique [0002] Compared with liquid crystal displays, Organic Light-Emitting Diode (OLED) display devices have the advantages of self-illumination, fast response, wide viewing angle, high brightness, bright colors, light and thin, etc., and are considered to be the next generation of display technology. The main structure of an OLED display device is an OLED substrate, which includes a plurality of pixel units defined by a pixel defining layer, and each pixel unit includes an OLED that emits light of a specific color. In the manufacturing process of OLED substrates, the film-forming methods for forming OLEDs mainly include evaporation process and solution process. The application of the evaporation process in small-sized display devices is relatively mature, and t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B41J2/11H01L51/56H10K99/00
CPCB41J2/11H10K71/135H10K71/15H10K77/10H10K59/12H10K59/38H10K71/00H10K59/10H10K59/1201B41J11/0015
Inventor 赵德江殷杰
Owner BOE TECH GRP CO LTD
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