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Method and device for controlling ink droplet drying process of inkjet printer

A technology of inkjet printer and drying process, applied in the direction of printing device, printing, etc., which can solve the problems of impact, unfavorable device performance, etc.

Inactive Publication Date: 2012-11-07
HEFEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, after the process is completed, the effect of this surface modification is retained, which may have an adverse effect on the final device performance.

Method used

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  • Method and device for controlling ink droplet drying process of inkjet printer
  • Method and device for controlling ink droplet drying process of inkjet printer
  • Method and device for controlling ink droplet drying process of inkjet printer

Examples

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Embodiment Construction

[0019] In the present embodiment, the method for controlling the drying process of ink droplets for the inkjet printer is to set a pair of flat electrodes to form a uniform electric field between the flat electrodes. The surfaces are perpendicular to each other, so that the surface of the printing substrate 3 is induced or polarized to generate surface charges, and the Coulomb force between the surface charges of the printing substrate and the solute molecules and solvent molecules in the ink controls the spreading of ink droplets on the printing substrate , solvent evaporation and solute film formation process.

[0020] see figure 1 and figure 2 , the structure of the ink drop drying process control device in this embodiment is set as:

[0021] A pair of flat plate electrodes is composed of an upper electrode plate 2 and a lower electrode plate 4. The upper electrode plate 2 is fixedly arranged on the bottom of the ink cartridge 1 and moves with the ink cartridge 1; the up...

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Abstract

The invention discloses a method for controlling an ink droplet drying process of an inkjet printer. The method is characterized in that a uniform electric field is formed between plate electrodes in pair, a printing substrate is positioned in the uniform electric field, the electric field direction is perpendicular to the surface of the printing substrate to enable surface charges to be generated on the surface of the printing substrate by means of induction or polarization, and spreading of ink droplets on the printing substrate, solvent evaporation and solute film forming process are controlled by coulomb force between the surface charges of the printing substrate and each of solvent molecules and solute molecules in ink. The surface of the printing substrate is modified, and shape and appearance of a printed film material is controlled without damaging device performances.

Description

technical field [0001] The invention relates to a method and a device for controlling the ink drop drying process applied to the preparation of a patterned functional film in flat panel display manufacturing. Background technique [0002] The fabrication of organic thin film transistor (OTFT) arrays in the manufacture of flat panel displays involves the preparation and patterning of metal thin films, semiconductor thin films and insulating thin film materials. Precise printing of these functional materials onto printing substrates using a solution method can directly form patterned films. This method has the advantages of simple process, low material consumption, and low cost; however, due to the effects of various factors such as ink components, surface properties of the substrate, and printing process conditions, the uniformity and microscopic morphology of the film are not easy to control. The size and polarity of the surface energy of the substrate directly determine th...

Claims

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Application Information

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IPC IPC(8): B41J11/00B41J2/01
CPCH10K71/135
Inventor 王向华吕国强
Owner HEFEI UNIV OF TECH
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