Surface impurity cleaning equipment for touch screen ITO (Indium Tin Oxide) film

Abstract

The utility model relates to surface impurity cleaning equipment for a touch screen ITO (Indium Tin Oxide) film, which is connected with an ITO film cleaning machine and comprises a drying dust removal device, an ultraviolet light cleaning device and a roller way, an outlet of the drying dust removal device is butted with an inlet of the ultraviolet light cleaning device, and the roller way penetrates through the drying dust removal device and the ultraviolet light cleaning device. The surface impurity cleaning equipment for the touch screen ITO film is composed of the drying and dust removing device and the ultraviolet light cleaning device, the ITO film conveyed out of a cleaning machine enters the roller way and is continuously moved forwards, the ITO film is dried and dedusted through the drying and dust removing device and then continuously enters the ultraviolet light cleaning device, and then the ITO film is cleaned by the ultraviolet light cleaning device. Organic pollutants on the surface of the ITO film are removed through a photosensitive oxidation reaction under ultraviolet irradiation, and the impurity / smudginess defective rate can be reduced to 0.5% or below, so that the reliability of a product is greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to touch -sensitive screen production auxiliary equipment field especially, and it is a kind of surface impurity cleaning equipment of touch -sensitive screen ITO film. BACKGROUND

[0002] Touch screen is inevitably polluted by dust or other small substances in production engineering, which leads to product unable to produce or appearance dirty, impurity inclusion, and further leads to touch screen electrical performance is bad, reliability test failure, mainly in:

[0003] ITO film exists surface not enough dry after passing through cleaning line, and it is easy to stick dust.Problems such as ITO film silk screen silver line will have support point drop-off, silver line adhesion is not enough etc., because there is actually organic contaminant that visual invisible on product surface before ITO film silk screen silver line.

[0004] Therefore, measures must be taken to ensure that the surface impurities of ITO film are fully cleaned. INVENTION CONTENTS

[0005] Therefore, it is necessary to provide a surface impurity cleaning equipment for touch screen ITO film in view of at least one of the above problems.

[0006] The surface impurity cleaning equipment for touch screen ITO film provided by the utility model is connected with an ITO film cleaning machine, and includes a drying and dust removing device, an ultraviolet light cleaning device and a roller way.

[0007] In one embodiment, the drying and dust removing device includes a liquid cutting sponge roller assembly, an air knife assembly, an ion fan and a sponge assembly from the inlet end to the outlet end.

[0008] In one embodiment, the liquid cutting sponge roller assembly includes a first roller group and a second roller group, and at least three transmission rollers on the roller way are arranged between the first roller group and the second roller group.

[0009] In one embodiment, the air knife assembly includes an upper air knife and a lower air knife arranged in the normal direction of the roller way.

[0010] In one embodiment, the blowing port of the upper air knife and the lower air knife is oriented at 45° to the conveying surface of the roller way.

[0011] In one embodiment, the blowing port of the ion fan is perpendicular to the conveying surface of the roller way.

[0012] In one embodiment, the ultraviolet cleaning device includes a plurality of ultraviolet lamp groups evenly distributed along the conveying direction of the roller conveyor.

[0013] In one embodiment, the ultraviolet lamp assembly includes a lampshade and an ultraviolet lamp tube, the bottom surface of the lampshade being open and facing the roller conveyor, and the ultraviolet lamp tube being disposed inside the lampshade.

[0014] In one embodiment, a drain hole is provided on the bottom surface of the outer cover of the drying and dust removal device, and the drain hole is close to the inlet end of the drying and dust removal device.

[0015] The technical solutions provided in the embodiments of this utility model bring the following beneficial technical effects:

[0016] The surface impurity cleaning equipment for ITO film of touch screen provided by this utility model consists of two main parts: a drying and dust removal device and an ultraviolet light cleaning device. The ITO film conveyed from the cleaning machine enters the roller conveyor and is continuously moved forward. It first passes through the drying and dust removal device for drying and dust removal, and then continuously enters the ultraviolet light cleaning device. Under ultraviolet light irradiation, organic pollutants on the surface of the ITO film are removed through photosensitive oxidation reaction. The impurity / dirt defective rate can be reduced to below 0.5%, which greatly improves the reliability of the product.

[0017] Additional aspects and advantages of this application will be set forth in the following sections and will be understood in detail from the following description or by means of specific implementation of the present invention. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the planar structure of a surface impurity cleaning device for a touch screen ITO film according to an embodiment of the present invention;

[0019] Figure 2 This is a schematic diagram of the planar structure of the drying and dust removal device in one embodiment of the present invention;

[0020] Figure 3 This is a schematic diagram of the planar structure of the ultraviolet cleaning device in one embodiment of the present invention.

[0021] Explanation of reference numerals in the attached figures:

[0022] 100 - Drying and dust removal device; 200 - Ultraviolet light cleaning device; 300 - Roller conveyor; 400 - Cover body;

[0023] 110 - Liquid-cutting sponge roller assembly, 120 - Air knife assembly, 130 - Ionizing fan, 140 - Sponge assembly;

[0024] 111-First roller group, 112-Second roller group; 121-Upper air knife, 122-Lower air knife, 101-Drainage hole;

[0025] 310 - Drive roller;

[0026] 210 - UV lamp assembly, 211 - lamp cover, 212 - UV lamp tube. Detailed Implementation

[0027] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. The drawings illustrate possible embodiments of this utility model. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein with reference to the drawings. The embodiments described with reference to the drawings are exemplary and intended to provide a more thorough and complete understanding of the disclosure of this utility model, and should not be construed as limiting the utility model. Furthermore, detailed descriptions of known technologies may be omitted where such details are not essential to the features of the illustrated utility model.

[0028] Those skilled in the art will understand that, unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. It should also be understood that terms such as those defined in general dictionaries should be understood to have the same meaning as in the prior art and should not be interpreted in an idealized or overly formal sense unless specifically defined as herein.

[0029] Those skilled in the art will understand that, unless specifically stated otherwise, the singular forms “a,” “an,” “the,” and “the” used herein may also include the plural forms. It should be further understood that the term “comprising” as used in the specification of this application means the presence of the stated features, integers, steps, operations, elements, and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof. It should be understood that the term “and / or” as used herein includes all or any units and all combinations of one or more associated listed items.

[0030] The technical solution of this utility model and how the technical solution solves the above-mentioned technical problems are described in detail below with specific embodiments.

[0031] The surface impurity cleaning device for the ITO film of the touch screen provided by this utility model is connected to an ITO film cleaning machine, such as... Figure 1As shown, the device includes a drying and dust removal device 100, an ultraviolet (UV) cleaning device 200, and a roller conveyor 300. The outlet of the drying and dust removal device 100 is connected to the inlet of the UV cleaning device 200, and the roller conveyor 300 passes through both the drying and dust removal device 100 and the UV cleaning device 200. The surface impurity cleaning equipment for touchscreen ITO films provided by this utility model (hereinafter referred to as the cleaning equipment) mainly includes a drying and dust removal device 100, used to quickly dry the ITO film just output from the ITO film cleaning machine to prevent it from being contaminated with dust and debris, so that it can directly enter the UV cleaning device 200 under the conveyor of the roller conveyor 300. The cleaning equipment also includes necessary components such as a cover 400, a housing, and a base. The cover 400 covers the drying and dust removal device 100, the UV cleaning device, and the roller conveyor 300, forming a relatively sealed space.

[0032] The surface impurity cleaning equipment for ITO film of touch screen provided by this utility model consists of two main parts: a drying and dust removal device 100 and an ultraviolet light cleaning device 200. The ITO film conveyed from the cleaning machine enters the roller conveyor 300 and is continuously moved forward. It first passes through the drying and dust removal device 100 for drying and dust removal, and then continuously enters the ultraviolet light cleaning device 200. Under ultraviolet light irradiation, organic pollutants on the surface of the ITO film are removed through photosensitive oxidation reaction. The impurity / dirt defect rate can be reduced to below 0.5%, which greatly improves the reliability of the product.

[0033] Specifically, in one embodiment of this utility model, such as Figure 2 As shown, the drying and dust removal device 100 includes, from the inlet to the outlet, a liquid-cutting sponge roller assembly 110, an air knife assembly 120, an ion fan 130, and a sponge assembly 140. The liquid-cutting sponge roller assembly 110 is used to quickly absorb the cleaning liquid from the surface of the ITO membrane after cleaning by a continuously rolling sponge. To ensure the absorption effect of the cleaning liquid on the ITO membrane surface, the sponge on the liquid-cutting sponge roller assembly 110 needs to be replaced regularly.

[0034] Optionally, in one implementation of this utility model, such as Figure 2 As shown, the liquid-cutting sponge roller assembly 110 includes a first roller group 111 and a second roller group 112, with at least three drive rollers 310 on roller tracks 300 spaced between the first roller group 111 and the second roller group 112. The liquid-cutting sponge roller assembly 110 operates in two stages to ensure that the cleaning liquid on the ITO membrane is fully absorbed. After the water is absorbed by these two stages of liquid-cutting sponge rollers, large areas of water on the ITO membrane are absorbed by the sponge, leaving only slightly noticeable water marks.

[0035] Optionally, in conjunction with the foregoing embodiments, in one implementation, such as Figure 2As shown, the air knife assembly 120 includes an upper air knife 121 and a lower air knife 122 disposed in the normal direction of the roller conveyor 300. Specifically, the air outlets of the upper air knife 121 and the lower air knife 122 are oriented at 45° to the conveying surface of the roller conveyor 300. The air knife is designed for hot air drying, and consists of two sets, upper and lower, with two air outlets, each at a 45-degree angle, blowing air onto the upper and lower surfaces of the ITO film respectively, ensuring complete drying of the ITO film.

[0036] Optionally, in conjunction with the foregoing embodiments, in one implementation, such as Figure 2 As shown, the air outlet of the ion blower 130 is perpendicular to the conveying surface of the roller conveyor 300. An ion blower 130 is installed at the outlet of the air knife with the air outlet facing downward. The ITO film dried by the clean air knife passes through the conveyor roller conveyor 300 to the area below the ion blower 130, where the static electricity on the product is eliminated through particle neutralization, reducing the impact of static electricity adsorbing dust on the product.

[0037] Optionally, in conjunction with the foregoing embodiments, in one implementation, such as Figure 2 As shown, a drain hole 101 is provided on the bottom surface of the outer cover of the drying and dust removal device 100, and the drain hole 101 is close to the inlet end of the drying and dust removal device 100.

[0038] Specifically, in another embodiment of this utility model, such as Figure 3 As shown, the ultraviolet cleaning device 200 includes a plurality of ultraviolet lamp groups 210 evenly distributed along the conveying direction of the roller conveyor 300. Specifically, in one embodiment, the ultraviolet lamp group 210 includes a lamp cover 211 and an ultraviolet lamp tube 212. The bottom surface of the lamp cover 211 is open and faces the roller conveyor 300, and the ultraviolet lamp tube 212 is disposed inside the lamp cover 211. The ultraviolet cleaning device 200 is designed to address the problem of poor adhesion of printed silver lines on products and has the following characteristics:

[0039] a. Use a low-pressure ultraviolet mercury lamp with a wavelength of 254nm as the light source, because ultraviolet light with a wavelength of 254nm can decompose ozone into oxygen and active oxygen atoms. These active oxygen atoms have strong oxidizing ability and can further oxidize organic pollutants to generate volatile gases such as carbon dioxide and water vapor, which eventually escape from the material surface, achieving a more thorough cleaning.

[0040] b. To ensure the quality of photo-cleaning, this equipment is equipped with 3 sets of low-pressure ultraviolet mercury lamps, each with a reflector to improve light efficiency. The conveyor speed of the 300 roller conveyor is electrically adjustable.

[0041] c. An adjustable metal baffle is installed at the equipment outlet to prevent ultraviolet leakage from harming the health of operators.

[0042] After testing, the present invention provides the following performance parameters:

[0043]

[0044]

[0045] Those skilled in the art will understand that the terms "first" and "second" discussed in this application are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0046] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0047] In the description of this specification, specific features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples.

[0048] The above description is only a partial embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A surface impurity cleaning device for a touch screen ITO film, connected to an ITO film cleaning machine, characterized in that, It includes a drying and dust removal device, an ultraviolet cleaning device, and a roller conveyor. The outlet of the drying and dust removal device is connected to the inlet of the ultraviolet cleaning device, and the roller conveyor runs through the drying and dust removal device and the ultraviolet cleaning device.

2. The surface impurity cleaning device for the ITO film of a touch screen according to claim 1, characterized in that, The drying and dust removal device includes, from the inlet to the outlet, a liquid-cutting sponge roller assembly, an air knife assembly, an ion fan, and a sponge assembly.

3. The surface impurity cleaning device for the ITO film of a touch screen according to claim 2, characterized in that, The liquid-cutting sponge roller assembly includes a first roller group and a second roller group, with at least three drive rollers on the roller track spaced apart between the first roller group and the second roller group.

4. The surface impurity cleaning device for the ITO film of a touch screen according to claim 2, characterized in that, The air knife assembly includes an upper air knife and a lower air knife disposed in the normal direction of the roller conveyor.

5. The surface impurity cleaning device for the ITO film of a touch screen according to claim 4, characterized in that, The air outlets of the upper and lower air knives are oriented at 45° to the conveying surface of the roller conveyor.

6. The surface impurity cleaning device for the ITO film of a touch screen according to claim 2, characterized in that, The air outlet of the ion blower is oriented perpendicular to the conveying surface of the roller conveyor.

7. The surface impurity cleaning device for the ITO film of a touch screen according to claim 1, characterized in that, The ultraviolet cleaning device includes several groups of ultraviolet lamps evenly distributed along the conveying direction of the roller conveyor.

8. The surface impurity cleaning device for the ITO film of a touch screen according to claim 7, characterized in that, The ultraviolet lamp assembly includes a lamp cover and an ultraviolet lamp tube. The bottom surface of the lamp cover is open and faces the roller conveyor. The ultraviolet lamp tube is disposed inside the lamp cover.

9. The surface impurity cleaning device for the ITO film of a touch screen according to claim 1, characterized in that, The bottom surface of the outer cover of the drying and dust removal device is provided with a drainage hole, which is close to the inlet end of the drying and dust removal device.

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