Printing ink and ink-jet printing method

A printing ink and inkjet printing technology, which is applied in the direction of ink, electric solid devices, semiconductor devices, etc., can solve the problem of uneven film surface, achieve the effects of ensuring fluidity, improving film surface uniformity, and improving stability

Pending Publication Date: 2022-04-26
SHENZHEN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The embodiment of the present application provides a printing ink and an inkjet printing method, which are used to solve the problem of uneven film surface in the film formed by the existing inkjet printing method

Method used

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  • Printing ink and ink-jet printing method
  • Printing ink and ink-jet printing method
  • Printing ink and ink-jet printing method

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Embodiment Construction

[0030] The following descriptions of the various embodiments refer to the accompanying drawings to illustrate specific embodiments that the present application can be used to implement. The directional terms mentioned in this application, such as [top], [bottom], [front], [back], [left], [right], [inside], [outside], [side], etc., are for reference only The orientation of the attached schema. Therefore, the directional terms used are used to illustrate and understand the application, but not to limit the application. In the figures, structurally similar elements are denoted by the same reference numerals.

[0031] The present application will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0032] At present, in the process of vacuum drying, since the viscosity and fluidity of the printing ink cannot be effectively controlled, the solute particles in the printing ink move to the periphery of the ink drop and produce a coffe...

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PUM

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Abstract

According to the printing ink and the ink-jet printing method provided by the invention, the additive is added into the printing ink, and the additive comprises the polar group for forming the intermolecular hydrogen bond, so that the viscosity of the printing ink in a vacuum drying process is improved, and the movement of a solute separated out of the printing ink is limited, thereby weakening a coffee ring effect and improving the printing quality. And the film surface uniformity of a film formed by ink-jet printing is improved.

Description

technical field [0001] The present application relates to the field of display technology, in particular to a printing ink and an inkjet printing method. Background technique [0002] Organic light emitting diode (OLED) displays have the advantages of self-illumination, high contrast, wide color gamut, thin thickness, and fast response, and are expected to replace liquid crystal display (LCD) as the next generation of flat-panel displays. [0003] Compared with fully vapor-deposited organic light-emitting diode devices, printed organic light-emitting diode displays have the advantages of high resolution and high material utilization, but printing and drying are difficult to control processes. In the process of vacuum drying, since the viscosity and fluidity of the printing ink cannot be effectively controlled, the solute particles in the printing ink move to the periphery of the ink drop and produce a coffee ring effect, which makes the film surface uneven after vacuum dryin...

Claims

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Application Information

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IPC IPC(8): C09D11/38H01L51/56
CPCC09D11/38H10K71/135H10K71/00
Inventor 苗洋
Owner SHENZHEN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD
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