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Coating unit, coating device using the coating unit and coating method

A coating method and coating technology, which are applied to the device, coating, optics, etc. of surface coating liquid, can solve the problems of longer time-consuming, poor coating operation efficiency, and inability to coat thickness, etc., to achieve Improve efficiency and reduce time-consuming effect

Active Publication Date: 2014-08-06
NTN CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the above-mentioned number of coatings is increased, the time required to correct the coated area of ​​​​one part becomes longer, and the efficiency of the coating operation deteriorates.
[0011] In addition, when the area of ​​the area to be coated becomes larger and the shape of the front end surface of one coating needle is set accordingly, the shape of the front end surface is changed due to the characteristics of the corrected ink or the shape of the area to be coated. However, there is a tendency that the correction ink is applied thicker than the target thickness, and sometimes the target thickness cannot be applied.
In addition, when the area to be coated is square, even if the shape of the front end surface of the coating needle is kept circular and enlarged, it may not be easy for the correction ink applied from the front end of the coating needle to flow into the area to be coated. corners, etc., making it impossible to reach
[0012] In addition, in the coating method in which the shape of the front end surface of the coating needle and the shape of the area to be coated are made square or rectangular as in Patent Document 2, there is a problem that it cannot be corrected due to the characteristics of the ink and the coating area. Problems such as applying a square or a rectangle, the applied correction ink spreads and becomes a circle or an oval

Method used

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  • Coating unit, coating device using the coating unit and coating method
  • Coating unit, coating device using the coating unit and coating method
  • Coating unit, coating device using the coating unit and coating method

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Experimental program
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Effect test

Embodiment approach 1

[0085] like figure 1 As shown, the coating apparatus 1 according to the first embodiment of the present invention includes: a coating unit 2, which uses a plurality of coating needles 3 to coat the correction ink 11 on defects; an observation optical system 70, the observation optical system The system 70 observes the surface of the color filter substrate (hereinafter referred to as the workpiece W); the cutting laser unit 20 performs laser cutting of defects on the surface of the workpiece W through the observation optical system 70; the host computer 30 , the host computer 30 controls the whole device; the XY table 40, on which the defective workpiece W is loaded; The observation optical system 70 and the CCD camera 50 are driven above.

[0086] The XY stage 40 moves a position on the surface of the workpiece W that needs to be coated and corrected below the coating unit 2 , or moves a position on the surface of the workpiece W to be observed below the observation optical s...

Embodiment approach 2

[0136] Figure 9 It is the figure which looked at the main part of the coating unit of Embodiment 2 of the present invention from the front, Figure 10 It is the figure which looked at the coating unit from below. In addition, with respect to other structures and effects, the same reference numerals as those in the first embodiment are attached and the description thereof will not be repeated. In this coating unit, cylindrical coating needles 23 are used, for example, 3×8=24 coating needles 23 are arranged on the needle support surface 19a of the lower surface of the needle holder member 19 at equal intervals in the XY direction. The 24 coating needles 23 have the same longitudinal dimension, and are formed to have the same thickness (radial dimension) from the distal end to the proximal end. The thickness of the coating needles 23 and the interval between the coating needles 23 are appropriately set according to the viscosity and properties of the correction ink, and the fi...

Embodiment approach 3

[0138] Figure 11 It is the figure which looked at the main part of the coating unit of Embodiment 3 of the present invention from the front, Figure 12 It is the figure which looked at the coating unit from below. In addition, with regard to other structures and effects, the same reference numerals as those in the first and second embodiments are attached and the description thereof will not be repeated. The coating needle 33 of this coating unit is formed thicker than the cylindrical coating needle 23 shown in the second embodiment, and the tip portion thereof is formed in a tapered shape (a shape that becomes thinner from the base end side toward the tip end).

[0139] In this coating unit, for example, 3×8=24 coating needles 33 are arranged in the XY direction on the needle support surface 19 a of the needle holder member 19 . A circular flat surface is formed on the tip 33a of the coating needle 33 . The 24 coating needles 33 have the same longitudinal dimension, and a...

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PUM

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Abstract

A coating unit is disclosed and can be used for accurately coating liquid state materials on a large coated area in a high-efficiency manner. The base ends (3b) of a plurality of coating needles (3) are fixed on a needle supporting face (19a) of a needle seat component (19) by the coating unit (2), and the front ends (3a) of the plurality of coating needles (3) are arranged in such a way that the front ends (3a) correspond to the shape of a coated area. Through adjustment of the shape, the size and the separation distance of the coating needles, correction ink (11) can be coated to accurately form a shape of the coated area in such a way that expected thickness and a small coating number are realized.

Description

technical field [0001] The present invention relates to a coating unit, a coating method using the coating unit, and a coating device, and in particular, to RGB pixel correction for color filter substrates for liquid crystal screens, electrode paste for electrode pattern substrates, and semiconductor elements. A coating unit such as coating or coating of an overcoat material, a coating apparatus and a coating method using the coating unit. Background technique [0002] In recent years, the pixel size of the color filter substrate has been enlarged due to the enlargement of the FPD (Flat Panel Display), and the area of ​​the pixel defect that needs to be corrected by application of a liquid material, ie, correction ink, tends to expand. [0003] Now, it is necessary to apply the correction ink to an area with a diameter of several hundreds of μm. In addition, in application to electrode patterns and element parts, it may be necessary to apply the correction ink to an area wi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B05C5/00B05D1/30G02F1/13
Inventor 清水茂夫
Owner NTN CORP