ITO (indium tin oxide) laminar flow structure for TP (touch panel) production

By using a protective film and resistance measurement avoidance part in the ITO layer flow structure of the TP touch screen, the problem of scratches, dirt and resistance detection efficiency during the flow process is solved, and effective protection of the ITO layer and efficient large-scale resistance detection are achieved.

CN222672299UActive Publication Date: 2025-03-25CONHUI HUIZHOU SEMICON
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Patent Information

Application Number
CN202420779214.2
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-04-16
Publication Date
2025-03-25
Estimated Expiration
2034-04-16

AI Technical Summary

Technical Problem

During the production process of TP touch screen, the ITO layer is prone to scratches and dirt during the flow process, and changes in resistance value affect the product function. The existing measurement methods are inefficient and cannot achieve large-scale inspection.

Method used

An ITO laminar flow structure is designed, including a glass substrate and a protective film. A resistance measurement avoidance part is provided on the protective film, and the resistance value measurement is performed through the measurement hole A and the measurement hole B without tearing the film.

Benefits of technology

Effectively protect the ITO layer, reduce scratches and dirt, achieve efficient large-scale resistance detection, save costs, and improve detection efficiency.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model provides an ITO (Indium Tin Oxide) laminar flow structure for TP (Touch Panel) touch screen production. The ITO laminar flow structure comprises a glass substrate and a protective film, an ITO pattern layer is arranged on the front surface and / or the back surface of the glass substrate, and the protective film is pasted and covered on the surface, provided with the ITO pattern layer, of the glass substrate; the ITO pattern layer comprises a plurality of mutually independent touch sensing units, and each touch sensing unit comprises a sensing part, a lead part and a pin part which are connected in sequence; the protection film is provided with a resistance value measurement avoiding part, and the resistance value measurement avoiding part comprises a measurement hole A located in the induction part and a measurement hole B located in the pin part. The protection film can effectively protect the ITO, the ITO pattern layer is prevented from being scratched and stained in the circulation process, when resistance monitoring is carried out in the circulation process, the resistance of the ITO line can be measured only by lapping one probe of a resistance meter on the pin part through the measurement hole B and lapping the other probe on the induction part through the measurement hole A, loss and waste caused by tearing off the protection film for measurement are reduced, and the cost is reduced. The cost is effectively saved, and the detection efficiency is improved.
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Description

Technical Field

[0001] The utility model relates to the technical field of capacitive touch screen preparation, in particular to an ITO layer flow transfer structure used for TP touch screen production. Background Art

[0002] During the production process of the yellow light process, the TP touch screen needs to go through multiple processes such as ITO pattern etching, cleaning, silk screen printing, baking, cutting, ACF pre-pressing, and FPC bonding. After the ITO layer is prepared on the substrate, the capacitive touch sensor is obtained. When the capacitive touch sensor is circulated, the ITO layer is more easily scratched and dirty during the production process. For substrates with ITO layers on both sides, the scratches and dirt are more serious. At the same time, during the production process, the resistance value of ITO will also change, and the resistance value will affect the function of the product after bonding. Therefore, the resistance value needs to be controlled within a range during production.

[0003] The methods for controlling resistance value include incoming material resistance value control, ITO resistor thermal stability control, process control, etc. Among them, incoming material resistance value monitoring and process stability monitoring are relatively easy to implement, but for the thermal stability of ITO resistors, the resistance value of the ITO layer needs to be measured. In order to avoid scratches and dirt on the ITO layer in existing production, a protective layer is set outside the ITO layer. Such a circulation structure requires the protective layer to be removed first and then the resistance value is measured when measuring the resistance value of the ITO layer. After the measurement is completed, the product will be directly scrapped, or the product will be cleaned again after the measurement is completed, and the protective layer will be set again. The above two methods are not efficient, resulting in a waste of manpower and material resources. At the same time, since the capacitive touch sensor will be scratched and dirty when it continues to circulate if the protective layer is not reset after the protective layer is removed for testing, most of the time only a small amount of sampling can be performed, which cannot accurately reflect the data of a large batch and is prone to measurement errors. Once a high proportion of abnormal products appear, and a small amount of sampling fails to extract abnormal products, it will cause subsequent scrapping and cause greater losses. Utility Model Content

[0004] In order to overcome the problems existing in the related art, the utility model provides an ITO layer flow structure for TP touch screen production, which is suitable for large-scale detection. The protective film is pasted and covered on the surface of the glass substrate with the ITO pattern layer to effectively protect the ITO. At the same time, the resistance measurement avoidance part can realize resistance measurement without tearing the film.

[0005] The purpose of this utility model is to provide an ITO layer transfer structure for TP touch screen production:

[0006] Including glass substrate and protective film;

[0007] The front and / or back surface of the glass substrate is provided with an ITO pattern layer, and the protective film is pasted and covers the surface of the glass substrate provided with the ITO pattern layer;

[0008] The ITO pattern layer includes a plurality of mutually independent touch sensing units, each of which includes a sensing portion, a lead portion and a pin portion connected in sequence;

[0009] The protective film is provided with a resistance measurement avoidance portion, at least one resistance measurement avoidance portion is provided, and each resistance measurement avoidance portion corresponds to a different touch sensing unit;

[0010] The resistance measurement avoidance portion includes a measurement hole A located at the sensing portion and a measurement hole B located at the pin portion.

[0011] In a preferred technical solution of the present invention, the diameters of the measuring hole A and the measuring hole B are both no larger than 2 mm.

[0012] In a preferred technical solution of the utility model, a pin area is provided on one side of the surface of the glass substrate having the ITO pattern layer;

[0013] Each touch sensing unit is centrally arranged in the pin area.

[0014] In a preferred technical solution of the utility model, the outer surfaces of the measuring hole A and the measuring hole B are both covered with sealing membranes.

[0015] In a preferred technical solution of the utility model, the sealing film comprises a base sheet and an easily tearable extension portion;

[0016] The bonding surface between the easy-tear extension portion and the protective film is not provided with an adhesive layer;

[0017] The bonding surface of the substrate and the protective film is provided with an adhesive layer;

[0018] The substrate is pasted and covers the measuring hole A or the measuring hole B.

[0019] In a preferred technical solution of the utility model, the protective film is provided with indication marks for displaying the sensing part and the pin part of each touch sensing unit.

[0020] In a preferred technical solution of the utility model, one side of the protective film is provided with an extension piece extending away from the side of the glass substrate.

[0021] In a preferred technical solution of the utility model, a hydrophobic and oleophobic layer is provided on the back surface of the protective film.

[0022] The beneficial effects of the utility model are:

[0023] The protective film pasted and covered on the surface of the glass substrate with the ITO pattern layer can effectively protect the ITO and prevent the ITO pattern layer from being scratched or contaminated during the circulation process; the touch sensing unit of the ITO pattern layer includes a sensing part, a lead part and a pin part connected in sequence, and a resistance measurement avoidance part is provided on the protective film, and the resistance measurement avoidance part includes a measuring hole A located at the sensing part and a measuring hole B located at the pin part. When the resistance is monitored during the circulation process, only one probe of the resistance meter needs to be placed on the pin part from the measuring hole B, and the other probe needs to be placed on the sensing part from the measuring hole A, so as to measure the resistance of the ITO line, thereby reducing the loss and waste caused by tearing off the protective film for measurement, effectively saving costs, improving detection efficiency, and being suitable for large-scale detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the structure of a glass substrate.

[0025] Figure 2 It is a schematic diagram of the coordination structure of the glass substrate and the protective film.

[0026] Figure 3 It is a schematic diagram of a sealing membrane provided outside for protection.

[0027] Reference numerals:

[0028] 100, glass substrate; 200, ITO pattern layer; 210, sensing part; 220, lead part; 230, pin part; 300, protective film; 310, resistance measurement avoidance part; 311, measuring hole A; 312, measuring hole B; 320, extension sheet; 400, sealing film; 410, base sheet; 420, easy-to-tear extension part. DETAILED DESCRIPTION

[0029] The preferred embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although the preferred embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to make the present invention more thorough and complete, and to fully convey the scope of the present invention to those skilled in the art.

[0030] During the production process of the yellow light process, the TP touch screen needs to go through multiple processes such as ITO pattern etching, cleaning, silk screen printing, baking, cutting, ACF pre-pressing, and FPC bonding. During the production process, the resistance of ITO will also change, and the resistance will affect the function of the product after bonding. Therefore, the resistance needs to be controlled in the production range. The methods for controlling the resistance include incoming material resistance control, ITO resistor thermal stability control, and process control. Among them, incoming material resistance monitoring and process stability monitoring are relatively easy to achieve, but for the thermal stability of ITO resistors, the resistance of the ITO layer needs to be measured. In order to avoid scratches and dirt on the ITO layer in existing production, a protective layer is set outside the ITO layer. Such a circulation structure requires the protective layer to be removed first and then the resistance measurement to be performed when measuring the resistance of the ITO layer. Since after the protective layer is removed for testing, if the protective layer is not reset, it will be scratched and dirty when continuing to circulate. Therefore, most of the time, only a small amount of sampling can be performed, which cannot accurately reflect the data of a large batch and is prone to measurement errors. Once a high proportion of abnormal products appear, and a small amount of sampling fails to detect any abnormal products, it will cause subsequent scrapping and lead to greater losses.

[0031] Example

[0032] In view of the above problems, this embodiment provides an ITO layer flow structure for TP touch screen production, which is suitable for mass detection. The protective film 300 is pasted and covered on the surface of the glass substrate 100 provided with the ITO pattern layer 200 to effectively protect the ITO. At the same time, the resistance measurement avoidance portion 310 can realize resistance measurement without tearing the film.

[0033] like Figure 1-3 As shown, an ITO layer transfer structure for TP touch screen production:

[0034] It includes a glass substrate 100 and a protective film 300;

[0035] The front and / or back surface of the glass substrate 100 is provided with an ITO pattern layer 200, and the protective film 300 is pasted and covered on the surface of the glass substrate 100 provided with the ITO pattern layer 200. The protective film 300 is pasted and covered on the surface of the glass substrate 100 provided with the ITO pattern layer 200 to effectively protect the ITO and prevent the ITO pattern layer 200 from being scratched or dirty during the circulation process;

[0036] The ITO pattern layer 200 includes a plurality of mutually independent touch sensing units. Specifically, mutual independence means that the touch sensing units are not intersecting. The touch sensing unit includes a sensing portion 210, a lead portion 220 and a pin portion 230 connected in sequence.

[0037] The protective film 300 is provided with a resistance measurement avoidance portion 310, at least one resistance measurement avoidance portion 310 is provided, and each resistance measurement avoidance portion 310 corresponds to a different touch sensing unit;

[0038] The resistance measurement avoidance portion 310 includes a measurement hole A311 located at the sensing portion 210 and a measurement hole B312 located at the pin portion 230 .

[0039] The ITO layer flow structure used in the production of TP touch screens can monitor the resistance during the flow process by placing one probe of the resistance meter on the pin part 230 through the measuring hole B312 and placing the other probe on the sensing part 210 through the measuring hole A311, thereby measuring the resistance of the ITO line. This reduces the loss and waste caused by tearing off the protective film 300 for measurement, effectively saves costs, improves detection efficiency, and is suitable for large-scale detection.

[0040] In this embodiment, in order to prevent the measuring hole from being too large, resulting in too many leaking parts and causing the leaking parts to be dirty or scratched during circulation, the diameters of the measuring hole A311 and the measuring hole B312 are not greater than 2 mm.

[0041] In this embodiment, a pin area is disposed on one side of the surface of the glass substrate 100 having the ITO pattern layer 200;

[0042] Each touch sensing unit is centrally arranged in the pin area.

[0043] In this embodiment, the outer surfaces of the measuring hole A311 and the measuring hole B312 are both covered with a sealing film 400, which can seal the measuring hole when no resistance measurement is performed, so as to protect the ITO pattern layer 200 to the maximum extent and reduce the possibility of the ITO in the measuring hole being dirty or scratched during circulation.

[0044] In this embodiment, the sealing film 400 includes a base sheet 410 and an easily tearable extension portion 420;

[0045] The bonding surface between the tearable extension portion 420 and the protective film 300 is not provided with an adhesive layer;

[0046] The bonding surface of the substrate 410 and the protective film 300 is provided with an adhesive layer;

[0047] The substrate 410 is pasted and covered on the measuring hole A311 or the measuring hole B312;

[0048] The design of the tearable extension part 420 makes it easier to tear the sealing film 400 when measuring resistance. After the measurement is completed, the base film 410 can be re-pasted on the protective film 300 by holding the tearable extension part 420 to seal the measuring hole.

[0049] In this embodiment, the protective film 300 is provided with indicator marks for displaying the sensing portion 210 and the pin portion 230 of each touch sensing unit. The operator can accurately obtain the specific positions of a set of measuring holes A311 and B312 required for measurement based on the ruler to avoid measurement errors.

[0050] In this embodiment, an extension piece 320 extending away from the glass substrate 100 is provided on one side of the protective film 300. Since the protective film 300 needs to be removed in subsequent processes, the design of the extension piece 320 makes it easier to tear the protective film 300 and separate it from the glass substrate 100.

[0051] In this embodiment, a hydrophobic and oleophobic layer is disposed on the back surface of the protective film 300. The design of the hydrophobic and oleophobic layer can improve the cleanliness of the surface of the protective film 300, thereby reducing the probability of dirt on the measuring hole.

[0052] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the application. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a restriction. Therefore, other examples of exemplary embodiments can have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in the subsequent accompanying drawings.

[0053] In the description of the present application, it should be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present application; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0054] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0055] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of this application.

[0056] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An ITO layer transfer structure for TP touch screen production, characterized in that: Including glass substrate and protective film; The front and / or back surface of the glass substrate is provided with an ITO pattern layer, and the protective film is pasted and covers the surface of the glass substrate provided with the ITO pattern layer; The ITO pattern layer includes a plurality of mutually independent touch sensing units, each of which includes a sensing portion, a lead portion and a pin portion connected in sequence; The protective film is provided with a resistance measurement avoidance portion, at least one resistance measurement avoidance portion is provided, and each resistance measurement avoidance portion corresponds to a different touch sensing unit; The resistance measurement avoidance portion includes a measurement hole A located at the sensing portion and a measurement hole B located at the pin portion.

2. The ITO layer transfer structure for TP touch screen production according to claim 1, characterized in that: The diameters of the measuring hole A and the measuring hole B are both no greater than 2 mm.

3. The ITO layer transfer structure for TP touch screen production according to claim 1, characterized in that: A pin area is provided on one side of the surface of the glass substrate having the ITO pattern layer; Each touch sensing unit is centrally arranged in the pin area.

4. The ITO layer transfer structure for TP touch screen production according to claim 1, characterized in that: The outer surfaces of the measuring hole A and the measuring hole B are both covered with sealing membranes.

5. The ITO layer transfer structure for TP touch screen production according to claim 4, characterized in that: The sealing film comprises a base sheet and an easy-tear extension portion; The bonding surface between the easy-tear extension portion and the protective film is not provided with an adhesive layer; The bonding surface of the substrate and the protective film is provided with an adhesive layer; The substrate is pasted and covers the measuring hole A or the measuring hole B.

6. The ITO layer transfer structure for TP touch screen production according to claim 1, characterized in that: The protective film is provided with indication marks for displaying the sensing part and the pin part of each touch sensing unit.

7. The ITO layer transfer structure for TP touch screen production according to claim 1, characterized in that: An extension piece extending away from the side of the glass substrate is provided on one side of the protective film.

8. The ITO layer transfer structure for TP touch screen production according to claim 1, characterized in that: The back surface of the protective film is provided with a hydrophobic and oleophobic layer.