Alignment apparatus and method thereof

Abstract

The present invention relates to an alignment apparatus for aligning the printing head provided with a plurality of nozzles used for printing and method thereof. The alignment apparatus provided in the present invention includes: a printing head transfer part for supporting and transferring the printing head; a transparent sample print disposed in the lower position of the printing head with transparent form and having a predetermined sample print tag that can be screened; a first camera disposed in the lower position of the transparent sample print for screening the sample tag of the transparent sample print; a second camera combined with the printing head for screening the sample tag of the transparent sample print; a control part, controlling the printing head transfer part by comparing the images screened by the first and second camera, in order to make the second camera align to the first camera. Therefore, the alignment work of the base print and the printing head can be carried accurately and simply.

Description

technical field [0001] The invention relates to an alignment device and method thereof, in particular to an alignment device and method for aligning a substrate and a printing head for printing on the substrate. Background technique [0002] In general, a flat display device including a TFT-LCD (Thin Film Transistor-Liquid Crystal Display: Thin Film Transistor-Liquid Crystal Display) and an organic ELD (Elector Luminescence Display: Electroluminescent Display) is provided with a display panel for forming an image. [0003] The manufacturing process of such a display panel includes a printing process of forming a color filter (ColorFilter), a predetermined pattern, etc. on a substrate for a display panel. This printing process includes: screen printing (Screen Printing) that transfers the pattern to the surface of the panel by extruding ink and other media through the screen; using certain specific chemical substances (Photo Resist) to cause chemical The principle of changin...

AI Technical Summary

Problems solved by technology

[0007] However, this prior art may consume a lot of ink, glass, etc. and time in the process of jetting, resulting in an increase in cost.

Moreover, due to the use of more CCD cameras, the structure becomes complicated, and it is likely to consume more time when performing tasks such as detection and control.

[0008] Moreover, in this prior art, the camera is installed on the underside of the support for supporting the substrate, and the substrate and the injection port are photographed through the holes formed on the support, so it is difficult to install the camera and the structure is complicated.

Moreover, the prior art is only applicable to transparent substrates, not to non-transparent substrates

[0009] Moreover, this existing alignment device for making a display panel is to photograph the injection port through a transparent substrate, and the image may be distorted due to interference or refraction during the photographing process through the substrate. , it is difficult to precisely control if this distorted image is used

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