CN204331663U - Touch-screen module - Google Patents

Abstract

The utility model discloses a touch screen module, comprising: a touch screen and keys. A sensing channel is formed on the touch screen, and the button includes a stacked cover plate, a first transparent conductive layer, and a second transparent conductive layer, and the first transparent conductive layer includes a first pattern layer and a layer from the first pattern The sensing signal routing lines drawn from the side edges of the layer, the second transparent conductive layer includes a second pattern layer and the driving signal routing lines drawn from the side edges of the second pattern layer, the driving signal routing lines Connect to one end of the sensing channel adjacent to the button. According to the touch screen module of the present invention, the driving signal wiring for connecting the second pattern layer and the sensing channel is relatively short, so the stability of the touch screen module can be improved.

Description

touch screen module

technical field

The utility model relates to the technical field of electronic equipment manufacturing, in particular to a touch screen module.

Background technique

As a product that can provide a human-computer interaction interface, the touch screen has been widely used in many fields of social production and life, especially in the field of consumer electronics products. At present, there are many types of touch screen technologies, mainly including resistive, infrared, surface acoustic wave, pressure sensitive and capacitive, etc., with capacitive as the main type. Good test results are divided into GG(glass+glass)\GFF(glass+film+film)\GF(glass+film)\OGS(oneglass Sensor)\G1F and so on in terms of capacitive stacking and thickness. The effect of each structure on the test and the standards required by consumers are different. Different structural test standards have different requirements for the smartphone machine, which directly affects the required quality of the smartphone machine. Among them, the wiring between the button and the sensing channel in the touch screen of the related technology is long, which makes the signal transmission efficiency low and the wiring is easy to disconnect. question.

Utility model content

The utility model aims to solve one of the above-mentioned technical problems in the prior art at least to a certain extent. Therefore, the utility model is to provide a touch screen module, the touch screen module has high stability.

The touch screen module according to the utility model includes: a touch screen and keys. A sensing channel is formed on the touch screen; the button includes a stacked cover plate, a first transparent conductive layer, and a second transparent conductive layer, and the first transparent conductive layer includes a first pattern layer and a layer from the first pattern The sensing signal routing lines drawn from the side edges of the layer, the second transparent conductive layer includes a second pattern layer and the driving signal routing lines drawn from the side edges of the second pattern layer, the driving signal routing lines Connect to one end of the sensing channel adjacent to the button.

According to the touch screen module of the present invention, the driving signal wiring for connecting the second pattern layer and the sensing channel is relatively short, so the stability of the touch screen module can be improved.

In addition, according to the above-mentioned touch screen module of the present utility model, it can also have the following additional technical features:

The first pattern layer includes a plurality of sensing lines arranged at intervals, the second pattern layer includes a plurality of driving lines arranged at intervals, the driving lines are arranged to cross the sensing lines, and the sensing channel passes through the A plurality of driving signal wiring lines are connected to the driving lines in a one-to-one correspondence.

There are two sensing lines and two driving lines.

There are multiple driving signal wiring lines, and the multiple driving signal wiring lines are all led out from the same side edge of the corresponding second pattern layer.

An insulating protection layer is provided on the surface of at least one of the sensing signal wiring lines and the driving signal wiring lines.

The insulating protection layer is ink, and the thickness of the ink is less than 2 microns.

The buttons are arranged below the touch screen, the sensing channel runs through the touch screen along the up and down direction, and the driving signal wiring line of the button is connected to the lower end of the sensing channel.

The first transparent conductive layer is bonded to the cover plate through a first adhesive layer, and the second transparent conductive layer is bonded to the first transparent conductive layer through a second adhesive layer.

At least one of the first adhesive layer and the second adhesive layer is double-sided optical adhesive, and at least one of the first adhesive layer and the second adhesive layer has a thickness of 0.05 mm to 0.125 mm range.

The cover plate is a glass cover plate, and the thickness of the glass cover plate is in the range of 0.4 mm to 1.0 mm.

Description of drawings

FIG. 1 is a schematic diagram of a touch screen module according to an embodiment of the present invention.

Fig. 2 is a partial schematic diagram of a touch screen module according to an embodiment of the present invention.

Fig. 3 is a cross-sectional view of the keys of the touch screen module according to an embodiment of the present invention.

Reference numerals: touch screen module 100, touch screen 1, button 2, sensing channel 11, cover plate 21, first transparent conductive layer 22, second transparent conductive layer 23, first adhesive layer 24, second adhesive layer 25 , an insulating protection layer 26 , a first pattern layer 221 , a sensing signal wiring line 222 , a second pattern layer 231 , and a driving signal wiring line 232 .

detailed description

Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention, but should not be construed as limiting the present invention.

In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", Orientation indicated by "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. The positional relationship is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation , so it cannot be interpreted as a limitation of the present utility model.

In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, a feature defined as "first" and "second" may explicitly or implicitly include one or more of these features. In the description of the present utility model, "plurality" means two or more, unless otherwise specifically defined.

In this utility model, unless otherwise specified and limited, terms such as "installation", "connection", "connection" and "fixation" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connection, or integration; it can be mechanical connection or electrical connection; it can be direct connection or indirect connection through an intermediary, and it can be the internal communication of two components or the interaction relationship between two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present utility model according to specific situations.

In the present invention, unless otherwise clearly specified and limited, a first feature being "on" or "below" a second feature may include direct contact between the first and second features, and may also include the first and second features being in direct contact with each other. The features are not in direct contact but through another feature between them. Moreover, "above", "above" and "above" the first feature on the second feature include that the first feature is directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature. "Below", "beneath" and "under" the first feature to the second feature include that the first feature is directly below and obliquely below the second feature, or simply means that the first feature has a lower level than the second feature.

The utility model aims to solve the technical problem that the button touch function fails in the multiple tests of the tumbling and dropping test of smart phones and other electronic devices with touch screens of GFF and GF structures in the prior art, and specifically relates to a touch screen module.

The touch screen module 100 of the embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

As shown in FIGS. 1 to 3 , a touch screen module 100 according to an embodiment of the present invention includes: a touch screen 1 and buttons 2 .

Specifically, a sensing channel is formed in the touch screen 1 , and the button 2 includes a cover plate 21 , a first transparent conductive layer 22 and a second transparent conductive layer 23 arranged in layers. The first transparent conductive layer 22 includes a first pattern layer 221 and a sensing signal wiring line 222 drawn from the side edge of the first pattern layer 221, wherein the sensing signal wiring line 222 can be one or more, and the sensing signal wiring line 222 can be one or more. When there are multiple wiring lines 222 , the multiple sensing signal wiring lines 222 are drawn out from the same side or different sides of the first pattern layer 221 . The second transparent conductive layer 23 includes a second pattern layer 231 and a driving signal wiring line 232 drawn from the side edge of the second pattern layer 231, wherein the driving signal wiring line 232 can be one or more, and the driving signal wiring line 232 can be one or more. When there are multiple wiring lines 232 , the multiple driving signal wiring lines 232 are drawn out from the same side or different sides of the second pattern layer 231 . The driving signal routing line 232 is connected to one end of the sensing channel 11 adjacent to the key 2 . In FIG. 1 , the button 2 is arranged below the sensing channel 11 , therefore, the driving signal wiring line 232 of the button 2 is connected to the lower end of the sensing channel 11 .

According to the touch screen module 100 of the embodiment of the present invention, the wiring used to connect the second pattern layer 231 and the sensing channel 11 is relatively short, thereby avoiding or reducing problems such as transmission errors or line disconnection caused by long lines, and can improve the touch screen. Stability of module 100.

During the tumbling and dropping test process of the smart phone with the touch screen module 100 of the present invention, due to the short wiring connecting the second pattern layer 231 and the sensing channel 11 and the high structural strength, it is avoided that after several drops the first Delamination of the transparent conductive layer 22, delamination of the second transparent conductive layer 23, or damage to the wiring of the button 2 will lead to failure of the button or poor function of the mobile phone. Improve the yield rate of the support touch screen module and ensure the function of the whole machine.

It should be noted that the touch screen and keys of the present invention can be separated touch parts or two completely independent touch elements on the same screen. Specifically, at least the following two situations are included:

1) The touch screen 1 and the button 2 are two different touch parts on the same screen, that is to say, the touch screen 1 and the button 2 are respectively formed in two different areas on the same screen. It can be understood that the touch screen 1 and the button 2 share components such as a cover plate;

2) The touch screen 1 and the button 2 are two completely independent touch elements, that is to say, any one of the touch screen 1 and the button 2 has a separate cover plate, a first conductive layer, a second conductive layer and other components.

Of course, the touch screen 1 and the key 2 can share the form of some components, for example, the cover plate of the touch screen 1 and the cover plate of the key 2 are the same component, but the conductive layer and other parts of the touch screen 1 and the key 2 are not shared. It is understandable to those of ordinary skill.

The touch screen module of the present invention can be a capacitive touch screen module, a resistive touch screen module, and the like.

In some embodiments of the present invention, the first pattern layer 221 includes a plurality of sensing lines arranged at intervals, the second pattern layer 231 includes a plurality of driving lines arranged at intervals, and the driving lines are arranged to cross the sensing lines, The sensing channels 11 are connected to the driving lines in a one-to-one correspondence through the driving signal routing lines 232 . Increased the touch accuracy of button 2.

Preferably, there are two sensing lines and two driving lines. Therefore, the touch accuracy of the key 2 can be improved, and the key is also convenient to manufacture.

As shown in Figures 1 to 3, in some embodiments of the present invention, there are multiple driving signal wiring lines 232, and the multiple driving signal wiring lines 232 are all drawn out from the same side edge of the second pattern layer 231 . Therefore, the multiple driving signal wiring lines 232 drawn from the same side can facilitate the wiring of the touch screen module 100 , and can further improve the stability of the touch screen module 100 .

Further, an insulating protection layer 26 is provided on the surface of at least one of the sensing signal wiring lines 222 and the driving signal wiring lines 232 . Therefore, the stability of the sensing signal wiring line 222 and the driving signal wiring line 232 can be improved, and corrosion or short circuit of the wiring lines can be avoided.

Preferably, the insulating protective layer 26 is ink, and the thickness of the ink is less than 2 microns. Therefore, not only the stability of the circuit can be effectively improved, but also the thickness of the touch screen module 100 can be reduced.

Further, both the first pattern layer 221 and the second pattern layer 231 are transparent conductive films (ie, ITO).

As shown in Figure 3, in some embodiments of the present utility model, the first transparent conductive layer 22 is bonded to the cover plate 21 through the first adhesive layer 24, and the second transparent conductive layer 23 is bonded to the cover plate 21 through the second adhesive layer 25. Adhered to the first transparent conductive layer 22. Thereby, the stability of the button 2 is improved.

Preferably, at least one of the first adhesive layer 24 and the second adhesive layer 25 is double-sided optical adhesive, and at least one of the first adhesive layer 24 and the second adhesive layer 25 has a thickness of 0.05 mm to within 0.125 mm. Not only can the structural stability of the key 2 be improved, but also the thickness of the key 2 can be reduced.

Advantageously, the cover plate 21 is a glass cover plate, and the thickness of the glass cover plate is in the range of 0.4 mm to 1.0 mm. Further reduce the thickness of the button 2 .

A touch screen module 100 according to a specific embodiment of the present invention will be briefly described below with reference to the accompanying drawings.

As shown in Figures 1 to 3, the touch screen module 100 of the present utility model includes: a protective cover, a button 2 (or a film sensor, Film Sensor), a flexible printed circuit board (Flexible Printed Circuit, namely FPC) and a combined drive device , the touch screen module may be a capacitive touch screen module or a resistive touch screen module.

The button 2 includes a cover plate 21 , a first adhesive layer 24 , a first insulating oil layer, a first transparent conductive layer 22 , a second adhesive layer 25 , a second insulating oil layer, and a second transparent conductive layer 23 stacked in sequence. The first transparent conductive layer 22 includes a first pattern layer 221 and a sensing signal wiring line 222 ; the second transparent conductive layer 23 includes a second pattern layer 231 and a driving signal wiring line 232 . The surfaces of the sensing signal wiring lines 222 and the driving signal wiring lines 232 are both provided with an insulating protective layer 26 , that is to say, the surfaces of the sensing signal wiring lines 222 and the driving signal wiring lines 232 are protected by an insulating oil layer.

Wherein, a part of the protective cover forms the cover 21 of the key 2 . In other words, the touch screen 1 and the key 2 share a protective cover.

There is only one button 2, and the button 2 is located in the middle of the bottom of the protective cover. The left, right and bottom of the button 2 are the antenna test avoidance areas of the smartphone. The first transparent conductive layer 22 includes a plurality of sensing lines (RX), and the second transparent conductive layer 23 includes a plurality of driving lines (TX). The first transparent conductive layer 22 and the second transparent conductive layer 23 are bonded by the second adhesive layer 25, and the sensing line (RX) and the driving line (TX) form a vertical intersection, which can be realized by driving through a flexible printed circuit board. Touch function of button 2. touch. The materials of the sensing signal wiring lines 222 and the driving signal wiring lines 232 include, but are not limited to, silver wires and copper wires.

During the tumbling and dropping test of the smartphone, the smartphone is placed in a closed rectangular box (1 meter in length) and rotated with the midpoint of the box in the length direction as the support point at a speed of One minute and 12 weeks, until the mobile phone fails, the touch function of button 2 can still be used normally.

It can be seen from this that the structural design of the touch screen module 100 in the present invention is adjusted under the condition of the structural requirements of the whole machine, which can effectively avoid or reduce the separation of the first transparent conductive layer 22 and the second transparent conductive layer 23. The problem that the button touch function fails.

In some specific examples of the present utility model, the touch screen module 100 includes two sensing channels, and the key 2 includes two sensing lines and two driving lines, which can recognize sliding and clicking the key 2 to realize various functions (Some functions need to cooperate with the touch screen).

1. Swipe from left to right on button 2. Since button 2 has at least two sensing points spaced apart along the left and right directions, when the finger slides from left to right, the finger will first touch the left sensing point, and at this time the left sensing point will feedback a higher touch intensity value (intensity ), and the intensity value of the sensor point feedback on the right will be very small. When the finger slides further to the right, the sensing point on the right will feedback a higher touch intensity value (intensity), while the sensing point on the left will feedback a lower intensity value. The controller will then be able to trigger a function, such as unlocking, based on this state change.

2. Swipe from left to right on button 2. This process is the reverse of the preceding process and can be used to activate a function.

3. Swipe from touch screen 1 to button 2. During the sliding process of the finger, a high touch intensity value (intensity) will be fed back on the touch screen 1 , while the touch intensity value of the button 2 will be small. When the finger slides over the button 2 , a higher touch intensity value (intensity) will be fed back on the button, while the touch intensity value on the touch screen 1 will be very small. The controller will be able to activate a function according to this state change, of course, this function can only be realized when the touch screen is working.

4. Swipe from button 2 to touch screen 1. This process is the reverse process of the above process, which can activate a function.

5. When one or both of the touch screen 1 and the key 2 are touched simultaneously, three different functions can be realized.

Of course, multiple sensing contacts may also be provided on the key 2, for example, four sensing contacts arranged in a rectangle.

In some specific examples of the present invention, the cover plate 21 is a glass cover plate commonly used in this field, such as Soda lime, dragontrial, corning, and its thickness characteristic is in the range of 0.4mm to 1.0mm. The first adhesive layer 24 is double-sided optical adhesive Optics Clear Adhesive commonly used in this field, and its thickness is in the range of 0.05 mm to 0.125 mm. Both sides of the first transparent conductive layer 22 are routed on both sides of the first pattern layer 221, and the first pattern layer 221 is an ITO pattern. The second adhesive layer 25 is double-sided optical adhesive Optics Clear Adhesive commonly used in this field; its thickness is in the range of 0.05 to 0.125 mm. The traces of the second transparent conductive layer 23 are drawn out from the same side of the second pattern layer 231 . The insulating protection layer 26 is ink, and its thickness is less than 2um; the first transparent conductive layer 22 and the second transparent conductive layer 23 are made of the same material, such as conductive film SCP125-BCC-125V3-100m×500mm×0.1mm.

In the production process of the touch screen module 100, the first transparent conductive layer 22 and the second transparent conductive layer 23 are bonded by optical glue (that is, the second adhesive layer 25); the first transparent conductive layer 22 and the second transparent conductive layer after combination The transparent conductive layer 23 is bonded together with the combined driving device by thermocompression at a certain temperature through anisotropic conductive glue (ACF) and a special fixture to form an assembly. Then glue and fix it with the cover plate 21.

Button 2 of the present utility model can be used as return key etc.

In the description of this specification, descriptions with reference to the terms "one embodiment", "some embodiments", "example", "specific examples", or "some examples" mean that specific features described in connection with the embodiment or example , structures, materials or features are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification.

Although the embodiments of the present invention have been shown and described above, it can be understood that the above-mentioned embodiments are exemplary, and should not be construed as limitations of the present invention, and those of ordinary skill in the art are within the scope of the present invention. Variations, modifications, substitutions and variations can be made to the above-described embodiments.

Claims (10)

1. a touch-screen module, is characterized in that, comprising:

Touch-screen, described touch-screen is formed with induction channels;

Button, described button comprises the cover plate of arranged stacked, the first transparency conducting layer and the second transparency conducting layer, the induced signal cabling circuit that described first transparency conducting layer comprises the first patterned layer and draws from the edge, side of described first patterned layer, the drive singal cabling circuit that described second transparency conducting layer comprises the second patterned layer and draws from the edge, side of described second patterned layer, one end of the described button of vicinity of induction channels described in described drive singal cabling connection.

2. touch-screen module according to claim 1, it is characterized in that, described first patterned layer comprises spaced apart multiple line of induction, described second patterned layer comprises spaced apart multiple drive wire, described drive wire and described line of induction arranged crosswise, described induction channels be by described drive singal cabling circuit and described drive wire be connected correspondingly multiple.

3. touch-screen module according to claim 2, is characterized in that, the described line of induction and described drive wire are two.

4. the touch-screen module according to any one of claim 1-3, is characterized in that, described drive singal cabling circuit is many, and many described drive singal cabling circuits are all from the same side of described second patterned layer of correspondence along drawing.

5. the touch-screen module according to any one of claim 1-3, is characterized in that, the surface of at least one in described induced signal cabling circuit and described drive singal cabling circuit is provided with insulating protective layer.

6. touch-screen module according to claim 5, is characterized in that, described insulating protective layer is ink, and the thickness of described ink is less than 2 microns.

7. touch-screen module according to claim 1, it is characterized in that, described button is located at the below of described touch-screen, the through along the vertical direction described touch-screen of described induction channels, and the drive singal cabling circuit of described button is connected with the lower end of described induction channels.

8. touch-screen module according to claim 1, is characterized in that, described first transparency conducting layer bonds on described cover plate by the first adhesive linkage, and described second transparency conducting layer is bonded on described first transparency conducting layer by the second adhesive linkage.

9. touch-screen module according to claim 8, it is characterized in that, at least one in described first adhesive linkage and described second adhesive linkage is double sided optical glue, and the thickness of at least one in described first adhesive linkage and described second adhesive linkage is in the scope of 0.05 millimeter to 0.125 millimeter.

10. touch-screen module according to claim 1, is characterized in that, described cover plate is glass cover-plate, and the thickness of described glass cover-plate is in the scope of 0.4 millimeter to 1.0 millimeters.