Micro-area coating apparatus and method thereof

Abstract

The invention relates to a micro block coating apparatus and a method thereof, which is characterized in that a micro channel structure is formed in a coating module; wherein, the micro channel structure comprises at least one main fluid inlet, at least one secondary fluid inlet and at least one micro two-phase flow generator. The micro channel structure is communicated with the main fluid inletsand the secondary fluid inlets, thus the main fluid and the secondary fluid can be introduced into the micro channel structure respectively and be cut off to form a micro two-phase flow. Guided by a two-phase flow output section, the micro two-phase flow produced by the two-phase flow generator is introduced into the coating module from the two-phase flow output section. Through the parallel relative movement between the coating module and the substrate to be coated, the micro two-phase flow which is introduced from the coating module can be coated on a preset position on the substrate to be coated, so as to form a micro section.

Description

technical field [0001] The present invention relates to a coating device and method thereof, in particular to a micro-block coating device, which can be applied to the production of color units of color filters in liquid crystal flat panel displays and fluorescent layers in plasma display modules, Or the production of biomedical products, soft electronics and batteries, etc. Background technique [0002] With the development of information technology, flat-panel displays have gradually replaced traditional cathode ray image displays. Taking liquid crystal flat-panel displays with the highest market share among flat-panel displays as an example, its composition includes backlight, polarizing plate, glass substrate, liquid crystal, film Transistor (TFT), color filter (CF), etc. The color filter is an important component that directly determines the color characteristics and contrast of a color LCD flat panel display. [0003] The color filter of the liquid crystal flat panel...

AI Technical Summary

Problems solved by technology

However, since this method basically integrates multiple points into a line and a surface, each droplet must be accurately sprayed into a micron or smaller block, and the flight path of the droplet is easily disturbed by the air flow, so it is easy to spray into other areas. Therefore, the positioning accuracy of the required machine is high and the moving speed is also limited. Therefore, this method has not been officially introduced into production so far; in addition, because each group of nozzles can only spray one droplet at a time , the production efficiency is too low. In order to solve this problem, the number of nozzles must be increased (increased cost), and when the spraying action is performed in parallel, it must be confirmed that all nozzles are in good condition and there are no clogs and abnormal conditions.

However, if this method is applied to a large-size panel, there will still be problems such as machine enlargement but still need to maintain a high degree of maneuverability and uniformity, which have yet to be actively overcome under the trend of large-area TV screens in the future.

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