Touch assembly of single-layer ITO circuit and capacitive screen

Abstract

The utility model relates to a touch control assembly of a single-layer ITO circuit and a capacitive screen, the touch control assembly of the single-layer ITO circuit is connected to an external circuit, a plurality of touch control areas covered by sending circuits and receiving circuits are evenly distributed on a single-layer ITO base plate, and each touch control area is provided with a plurality of touch control electrodes. The transmitting line and the receiving line are both zigzag broken line lines, and the transmitting line and the receiving line are engaged but not in contact. According to the touch component with the single-layer ITO circuit, only the single-layer ITO film, the receiving circuit and the transmitting circuit are distributed in a canine-tooth staggered mode and are led out to an external circuit through the silver wires, when a human hand presses the staggered area, a plate capacitor is formed by a finger on the contact face and the corresponding receiving circuit and transmitting circuit at the same time, and therefore the touch effect of the touch component is greatly improved. And the control circuit determines the touch position by detecting the change of the capacitance at the position, so that the defects of high material cost, more processing procedures and the like due to the adoption of two layers of ITO (Indium Tin Oxide) conductive circuits in the traditional capacitive screen are overcome.

Description

TECHNICAL FIELD

[0001] The utility model relates to touch screen technical field especially is a kind of touch component and capacitive screen of single-layer ITO circuit. BACKGROUND

[0002] The sensor (industry is called SENSOR, following text is used) of multi-point touch capacitive touch screen generally adopts double-layer indium tin oxide (Indium tin oxide, ITO) conductive circuit design, is using double-sided ITO glass or two pieces of ITO conductive film, is processed by etching, printing, laser etc. Process. The SENSOR of this structure exists two layers of ITO conductive circuit, material cost is high, processing procedure is more, production cost is higher, production cycle is longer. SUMMARY

[0003] Therefore, it is necessary to provide a kind of touch component and capacitive screen of single-layer ITO circuit for at least one of the above problems.

[0004] In a first aspect, the utility model provides a kind of touch component of single-layer ITO circuit, connect on external circuit, there are several touch areas covered by sending line and receiving line on the ITO bottom plate of single layer, in each described touch area, the sending line and the receiving line are zigzag fold line circuit, the sending line and the receiving line engage but do not contact.

[0005] In some implementations of the first aspect, the ITO bottom plate includes a plurality of connection islands corresponding to the sending lines, and the connection islands are disposed on one side of the ITO bottom plate and outside the window region of the ITO bottom plate.

[0006] In some implementations of the first aspect, the connection islands have a protrusion height of 6-10 μm.

[0007] In some implementations of the first aspect, the receiving line is connected to the external circuit via a first silver wire, the sending line is connected to the connection islands via a second silver wire, and the connection islands are connected to the external circuit via a third silver wire; the first silver wire, the second silver wire and the third silver wire each have a width of 0.2 mm or greater, the distance between any two adjacent first silver wires and the distance between any two adjacent second silver wires are each 0.2 mm or greater, and the distance between any two of the first silver wire, the second silver wire and the third silver wire is 0.3 mm or greater; the first silver wire, the second silver wire and the third silver wire each have a printing thickness of 8-12 μm.

[0008] In combination with the first aspect and the above implementation manners, in some implementation manners of the first aspect, the plurality of touch areas are arranged into a touch column, and a ground line frame is distributed at the edge of each touch column; each touch column includes two rows of receiving lines and a plurality of segments of independent transmitting lines, and the transmitting lines are arranged between the two rows of receiving lines.

[0009] In combination with the first aspect and the above implementation manners, in some implementation manners of the first aspect, the ITO bottom plate is provided with an insulating oil layer covering the transmitting lines and the receiving lines.

[0010] In combination with the first aspect and the above implementation manners, in some implementation manners of the first aspect, the thickness of the insulating oil layer is 4-8 μm.

[0011] The second aspect provides a touch capacitive screen, which is arranged on an external device and includes a flexible circuit board and a single-layer ITO line touch assembly as described in any one of the first aspect of the utility model.

[0012] In some implementation manners of the second aspect, the flexible circuit board is a single-layer flexible circuit board.

[0013] The technical scheme provided in the embodiment of the utility model has the following beneficial technical effects:

[0014] The single-layer ITO line touch assembly provided by the utility model only needs a single-layer ITO film, the receiving lines and the transmitting lines are distributed in a dog-tooth staggered manner, and are all led out to an external circuit through silver lines, when a hand is pressed on the staggered area, the finger simultaneously forms a flat capacitive plate with the corresponding receiving line and transmitting line at the contact surface, a control circuit determines the touch position by detecting the change of the capacitance of the position, and the disadvantages of high material cost and more processing procedures of the traditional capacitive screen using two-layer ITO conductive lines are eliminated.

[0015] The additional aspects and advantages of the present application will be given in the subsequent part, and will be understood in detail from the subsequent description or by understanding the specific implementation of the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 FIG. 1 is a circuit structure schematic diagram of a single-layer ITO line touch assembly in an embodiment of the utility model;

[0017] Figure 2 FIG. 2 is a circuit structure schematic diagram of part of transmitting lines and receiving lines in an embodiment of the utility model;

[0018] Figure 3It is partial circuit structure schematic view of touch component of single layer ITO line in an embodiment of the utility model.

[0019] Figure 4 It is circuit structure schematic view of two touch columns in an embodiment of the utility model.

[0020] Mark explanation:

[0021] 100-ITO bottom plate, 200-transmission line, 300-reception line, 400-connection island, 500-external line, 600-ground frame;

[0022] 110-insulating oil layer;

[0023] 310-first silver line, 210-second silver line, 410-third silver line. Specific implementation

[0024] In order to facilitate understanding of the utility model, the utility model will be described more comprehensively below with reference to relevant drawings. The drawings show possible embodiments of the utility model. However, the utility model can be realized in many different forms, and is not limited to the embodiments already described by the drawings in this paper. The embodiments described by reference to the drawings are exemplary, for making the understanding of the disclosure of the utility model more thorough and comprehensive, and cannot be explained as the limitation of the utility model. In addition, if detailed description of known technology is not necessary for the features of the utility model shown, these technical details can be omitted.

[0025] Those skilled in the relevant art can understand that, unless otherwise defined, all the terms (including technical terms and scientific terms) used herein have the same meaning as the general understanding of the ordinary skilled person in the field to which the utility model belongs. It should also be understood that terms such as those defined in a general dictionary should be understood as having a meaning consistent with that in the prior art, and unless specifically defined as here, should not be interpreted with idealized or overly formal meanings.

[0026] Those skilled in the art can understand that, unless specifically stated, the singular form "one", "a", "said" and "the" used herein can also include the plural form. It should be further understood that the phrase "comprising" used in the specification of the present application means that the features, integers, steps, operations, elements and / or components exist, but does not exclude the existence or addition of one or more other features, integers, steps, operations, elements, components and / or their groups. It should be understood that the phrase "and / or" used herein includes all or any single unit and all combinations of the associated listed items.

[0027] The technical scheme of the utility model and how the technical scheme solves the above technical problems are described in detail below with specific examples.

[0028] The utility model discloses a kind of touch components of single-layer ITO circuit, such as Figure 1 And Figure 2 As shown, connect on external circuit 500, several touch areas covered by sending line 200 (TX) and receiving line 300 (RX) are evenly distributed on single-layer ITO bottom plate 100, in each touch area, sending line 200 and receiving line 300 are zigzag fold line circuit, sending line 200 and receiving line 300 engage but do not contact.

[0029] Referring to Figure 1 And Figure 2 , sending line 200 and receiving line 300 include lead portion and bending portion, wherein bending portion is interlaced, the specific state of bending portion is rectangular dentate, or tine, using rectangular dentate and interlaced, can make sending line 200 and receiving line 300 cover wider ITO bottom plate 100 area, ensure that the touch sensitivity of capacitive screen is higher.In addition, ITO bottom plate 100 can be ITO film, can also be ITO glass.Using single-layer ITO bottom plate 100, simple structure, manufacturing process is simple, material cost and production cost are lower, more suitable for the popularization of industrialization capacitive touch screen.

[0030] The touch component of single-layer ITO circuit provided by the utility model only needs single-layer ITO film, receiving line 300 and sending line 200 canine tooth interlaced distribution, are led out to external circuit through silver wire, when hand is pressed on interlaced area, finger in contact surface and corresponding receiving line 300 and sending line 200 simultaneously constitute flat plate capacitor, control circuit determines touch position by detecting the change of the position capacitance, eliminates the material cost of traditional capacitive screen using two-layer ITO conductive circuit, more processing procedures and other drawbacks.

[0031] Specifically, in some implementation modes of the first aspect embodiment, as Figure 1 And Figure 2As shown, the ITO base plate 100 includes a plurality of connection islands 400 corresponding to the transmission lines 200, the connection islands 400 are arranged on one side of the ITO base plate 100 and outside the window area of the ITO base plate 100. Further specifically, the material of the connection islands 400 includes silver, and is made of a mixture of silver and adhesive, and the connection islands 400 can be referred to as conductive silver dots. In combination with the first aspect embodiment and the above implementation, in some implementation of the first aspect embodiment, the connection islands 400 have a protruding height of 6-10 μm. The connection islands 400 printed at each connection point are a kind of metal silver with high conductivity, and the connection islands 400 are arranged outside the window area of the touch assembly, so as to connect the channel lines and the ground lines, and the printed height of the connection islands 400 is designed to be 8±2 μm. In order to realize the distribution effect of the transmission lines 200 and the receiving lines 300 as uniform as possible and with a larger coverage area, the connection islands 400 are arranged at opposite ends of the ITO base plate 100, the transmission lines 200 are back-to-back and located between the two opposite receiving lines 300, and the specific appearance is referred to Figure 1 and Figure 3 .

[0032] In combination with the first aspect embodiment and the above implementation, in some implementation of the first aspect embodiment, as shown in Figure 4 , the receiving lines 300 are connected with the external lines 500 through the first silver lines 310, the transmission lines 200 are connected with the connection islands 400 through the second silver lines 210, and the connection islands 400 are connected with the external lines 500 through the third silver lines 410; the width of the first silver lines 310, the second silver lines 210 and the third silver lines 410 is greater than or equal to 0.2 mm, the distance between the adjacent two first silver lines 310 and the distance between the adjacent two second silver lines 210 are greater than or equal to 0.2 mm, and the distance between the first silver lines 310, the second silver lines 210 and the third silver lines 410 is greater than or equal to 0.3 mm; the printed thickness of the first silver lines 310, the second silver lines 210 and the third silver lines 410 is 8-12 μm. The silver lines of each connection external line 500 and each channel line and ground line are arranged on the surface of the insulating ink by printing and laser processing, and are connected with the corresponding connection islands 400. Considering the adhesion of the silver lines on the insulating ink, the width of the silver lines is not less than 0.2 mm, the distance between the silver lines (the second silver lines 210) of the transmission lines 200 and the distance between the silver lines (the first silver lines 310) of the receiving lines 300 are not less than 0.2 mm, and the distance between the silver lines of the transmission lines 200 and the silver lines of the receiving lines 300 and the ground line is not less than 0.3 mm, and the printed thickness of the silver lines is 10±2 μm.

[0033] Referring to the drawings, in some embodiments of the first aspect of the present application, as shown in Figure 3As shown, several touch control areas are arranged into a touch control column, and a ground line frame 600 is distributed at the edge of each touch control column; each touch control column includes two rows of receiving lines 300 and several independent sending lines 200, and the sending lines 200 are arranged between the two rows of receiving lines 300. In structure, the sending lines 200 and the receiving lines 300 are staggered like dog teeth, and are surrounded by the ground line frame 600, so as to eliminate the external electromagnetic interference of each touch control column, and the sending lines 200 and the receiving lines 300 are led out to the external circuit through the silver lines connected with the external lines 500. The sending lines 200, the receiving lines 300 and the ground line are ITO lines processed on ITO glass or ITO film with resistance not higher than 100Ω, and the lines are realized by ITO.

[0034] In combination with the first aspect and the above implementation manners, in some implementation manners of the first aspect, the ITO base plate 100 is provided with an insulating oil layer 110 covering the sending lines 200 and the receiving lines 300. In order to avoid the short circuit of the ITO lines of TX, RX and ground line and the silver lines (the first silver line 310, the second silver line 210 and the third silver line 410, etc.), the insulating oil is arranged between the two to isolate, that is, the insulating oil layer 110 is arranged on the ITO lines, and the connecting ports of each TX channel line, each RX channel line and the ground line are left on the insulating oil layer 110, so that each channel line and the ground line can be connected to the silver lines connected with the external lines 500. In order to prevent the silver lines connected with the external lines 500 from being oxidized, a layer of insulating ink is covered on the silver lines.

[0035] In combination with the first aspect and the above implementation manners, in some implementation manners of the first aspect, the thickness of the insulating oil layer 110 is 4-8μm. The insulating ink isolating the ITO lines is arranged outside the window, and covers the ITO lines on this area except the connecting island 400. Considering the printing deviation of the connecting island 400 and the insulating ink, a gap of 0.05mm is designed between the two. Considering the effective connection of the connecting island 400 and the silver lines connected with the external lines 500 and the insulating performance of the insulating ink, the printing thickness of the insulating ink is designed as 6±2μm.

[0036] In the second aspect, the utility model provides a kind of touch control capacitive screen, it is arranged on external device, including flexible circuit board and like any one described in the first aspect of the utility model single-layer ITO line touch control component, flexible circuit board is connected with external device and single-layer ITO line touch control component respectively.

[0037] In some implementation manners of the second aspect, the flexible circuit board is single-layer flexible circuit board.

[0038] Through test, the touch control capacitive screen provided by the utility model has the following technical parameters:

[0039]

[0040]

[0041] Those skilled in the art can understand that the terms "first", "second" discussed in the present application are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specified.

[0042] In the description of the present application, it should be explained that, unless otherwise specified and limited, the terms "mounting", "connecting", "connection" should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be directly connected, or indirectly connected through an intermediate medium, or the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0043] In the description of the present application, specific features, structures, materials or characteristics can be combined in any one or more embodiments or examples in a suitable manner.

[0044] The above is only some embodiments of the present application, and it should be pointed out that, for those skilled in the art, without departing from the principles of the present application, some improvements and refinements can also be made, which should be regarded as the protection scope of the present application.

Claims

1. A touch assembly of a single layer ITO line connected to an external line, characterized in that, The single-layer ITO substrate is uniformly provided with a plurality of touch areas covered by transmitting lines and receiving lines, each of the touch areas comprising sawtooth-shaped fold lines, the transmitting lines and the receiving lines being engaged but not in contact. 2.The single-layer ITO-on-wire touch assembly of claim 1, wherein, The ITO substrate comprises a plurality of connection islands corresponding to the transmitting lines, each of the connection islands being arranged on one side of the ITO substrate and outside the window area of the ITO substrate. 3.The single-layer ITO-on-wire touch assembly of claim 2, wherein, The connection islands have a protruding height of 6-10 μm. 4.The single-layer ITO-on-wire touch assembly of claim 2, wherein, The receiving lines are connected to the external lines through first silver lines, the transmitting lines are connected to the connection islands through second silver lines, and the connection islands are connected to the external lines through third silver lines; the first, second and third silver lines each have a width of greater than or equal to 0.2 mm, the distance between two adjacent first silver lines and the distance between two adjacent second silver lines are each greater than or equal to 0.2 mm, and the distance between the first and second silver lines and the distance between the first and third silver lines are each greater than or equal to 0.3 mm; the first, second and third silver lines each have a printing thickness of 8-12 μm. 5.The single-layer ITO-on-wire touch assembly of claim 1, wherein, The plurality of touch areas are arranged into a touch column, and each of the touch columns is provided with a ground line frame at the edge thereof; each of the touch columns comprises two rows of receiving lines and a plurality of mutually independent transmitting lines arranged between the two rows of receiving lines. 6.The single-layer ITO-on-wire touch assembly of claim 1, wherein, The ITO substrate is provided with an insulating oil layer covering the transmitting lines and the receiving lines. 7.The single-layer ITO-on-wire touch assembly of claim 6, wherein, The insulating oil layer has a thickness of 4-8 μm.

8. A touch capacitive screen provided on an external device, characterized by, A touch assembly comprising a flexible circuit board and a single-layer ITO circuit as described in any one of claims 1-7, the flexible circuit board being connected to the external device and the touch assembly of the single-layer ITO circuit, respectively.

9. The touch capacitive screen according to claim 8, wherein, The flexible circuit board is a single-layer flexible circuit board.

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