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Coating unit, coating device using same, and coating method

A coating method and a coating technology, which are applied to the device, coating, optics, etc. of coating liquid on the surface, which can solve the problems of longer time-consuming, poor coating efficiency, and inability to coat into squares or rectangles, etc. problem, achieve the effect of shortening time-consuming and improving efficiency

Active Publication Date: 2018-03-02
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 same, and coating method
  • Coating unit, coating device using same, and coating method
  • Coating unit, coating device using same, and coating method

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Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0085] Such as figure 1 As shown, the coating device 1 according to Embodiment 1 of the present invention includes: a coating unit 2, which uses a plurality of coating needles 3 to apply correction ink 11 to defects; an observation optical system 70, which 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 on defects on the surface of the workpiece W through the observation optical system 70; the host computer 30 , the main computer 30 controls the entire device; the XY table 40, on which the workpiece W with defects is loaded; The observation optical system 70 and the CCD camera 50 are driven.

[0086] The XY table 40 moves the position on the surface of the workpiece W to be corrected for coating to the bottom of the coating unit 2 , or moves the position to be observed on the surface of the workpiece W to the bottom of the observation optical system 70 . This XY ta...

Embodiment approach 2

[0136] Figure 9 It is the figure which looked at the main part of the coating unit of Embodiment 2 of this invention from the front, Figure 10 It is the figure which looked at the coating unit from below. In addition, for other structures and effects, the same symbols as those in Embodiment 1 are attached and descriptions are not repeated. In this coating unit, cylindrical coating needles 23 are used. For example, 3×8=24 coating needles 23 are arranged at equal intervals along the XY direction on the needle supporting surface 19 a of the lower surface of the needle hub member 19 . The 24 application needles 23 have the same longitudinal dimension, and are formed to have the same thickness (radial dimension) from the tip to the base. The thickness of the application needles 23 and the interval between the application needles 23 are appropriately set according to the viscosity and characteristics of the correction ink, and the film thickness required for application.

Embodiment approach 3

[0138] Figure 11 It is the figure which observed the main part of the coating unit of Embodiment 3 of this invention from the front, Figure 12 It is the figure which looked at the coating unit from below. In addition, for other structures and effects, the same symbols as those in Embodiments 1 and 2 are attached and descriptions are not repeated. The coating needle 33 of this coating unit is formed thicker than the cylindrical coating needle 23 shown in Embodiment 2, and its tip portion 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 on the needle supporting surface 19 a of the needle holder member 19 in the XY direction. A circular flat surface is formed at the tip 33 a of the application needle 33 . The 24 application needles 33 have the same longitudinal dimension, and are formed to have the same thickness (radial dimension) from the...

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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 particularly relates to correction of RGB pixels used in color filter substrates for liquid crystal screens, electrode paste toward electrode pattern substrates, and semiconductor elements. A coating unit for coating or coating of an overcoat material, a coating device using the coating unit, and a coating method. 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 ​​pixel defects that need to be corrected by applying correction ink, which is a liquid material, also tends to increase. [0003] Currently, it is necessary to apply correction ink to an area with a diameter of several hundred μm. In addition, in application to electrode patterns and device parts, it may be necessary to apply correction ink to an a...

Claims

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Application Information

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