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Printing spray head assembly, printing equipment and printing method

A technology for printing nozzles and printing equipment, which is applied in the directions of copying/marking methods, printing, etc., can solve problems such as uneven film formation of pixel units, and achieve the effects of saving printing time, improving printing efficiency, and simplifying printing processes

Active Publication Date: 2017-11-21
BOE TECH GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the fast drying of the surrounding area, the solution will move outward during the drying process, which will easily cause uneven film formation in the pixel unit after drying

Method used

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  • Printing spray head assembly, printing equipment and printing method
  • Printing spray head assembly, printing equipment and printing method
  • Printing spray head assembly, printing equipment and printing method

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Embodiment Construction

[0042] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0043]In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " The orientation or positional relationship indicated by "rear", "left", "right", "top", "bottom", "inner", "outer" and "circumferential" are based on the orientation or positional relationship shown in the drawings, only It is for the convenience of describing the present invention and simplifying the description, but does not indicate or imply that the refe...

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PUM

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Abstract

The invention discloses a printing spray head assembly, printing equipment and a printing method. The printing spray head assembly comprises a body, a first spray nozzle and second spray nozzles; the first spray nozzle and the second spray nozzles are arranged on the bottom wall of the body, the second spray nozzles and the first spray nozzle are arranged side by side in the first direction, the first spray nozzle is configured to be used for ink-jet printing a solution in a display area, the solution is prepared by dissolving a material for forming a film into a first solvent, and the second spray nozzles are configured to be used for ink-jet printing a second solvent in a second printing area, wherein the first direction is the direction perpendicular to the printing direction. According to the printing spray head assembly, the printing spray head assembly can directly conduct printing in the display area of a substrate, and the concentration of the solvent on the border of the display area can be effectively increased, so that the concentration of the solvent in the middle of the display area is close to that of the solvent on the border of the display area; therefore, the condition that the solution moves towards the outer side of the display area in the drying process can be prevented, and the film forming uniformity is improved.

Description

technical field [0001] The invention relates to the technical field of printing equipment, in particular to a printing nozzle assembly, printing equipment and a printing method. Background technique [0002] Compared with liquid crystal display devices, OLED display devices have advantages such as self-luminescence, fast response, high brightness, and high chromaticity, and are considered to be the next generation of display technology and are vigorously developed. The main structure of an OLED display device is an OLED substrate, in which pixel units are defined by a pixel defining layer. At present, the processes for preparing pixel units mainly include evaporation process and solution process. At present, the evaporation process is relatively mature, and the solution process includes inkjet printing, spin coating and screen printing. Among them, inkjet printing technology is considered to be an important way to achieve mass production of large-size OLED display devices d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B41J2/01B41J2/175B41M5/00
CPCB41J2/01B41J2/17503B41M5/0047
Inventor 薛金祥王浩王小虎孙中元
Owner BOE TECH GRP CO LTD