CN204203913U - There is the contact panel of fingerprint identification function - Google Patents

Abstract

The utility model relates to contact panel field, provide a kind of contact panel with fingerprint identification function, comprise a fingerprint recognition module, be arranged in a through hole of a first substrate, described fingerprint recognition module and described first substrate and a second substrate fit.The utility model by being arranged in the through hole of first substrate by fingerprint recognition module, then fits with second substrate, maintains the integrality of second substrate, avoids the intensity effect to second substrate.

Description

Touch panel with fingerprint recognition function

technical field

The utility model relates to a touch panel, in particular to a touch panel with a fingerprint identification function. the

Background technique

With the development of science and technology, fingerprint identification technology is widely used in various electronic devices by virtue of the security identification function it provides. In recent years, the fingerprint recognition technology applied to smart phones has become the focus of public attention due to its excellent anti-theft function and privacy protection function of personal mobile phone content, and will become the development direction of subsequent similar electronic devices. the

In the prior art, taking a smart phone as an example, the fingerprint reader corresponds to an active button setting on the smart phone, such as a home button, and the active button is generally arranged in a special through hole of the mobile phone protective cover, and is connected with the mobile phone protective cover. There are gaps between the boards, and fine dirt can easily adhere to the periphery of the specially designed through holes, thereby affecting the appearance of the mobile phone and reducing the comfort of the user experience. In addition, special through holes are often formed by drilling a hole on the entire protective cover and grinding it. The manufacturing process is difficult, and it affects the overall stress distribution of the protective cover and damages the strength of the protective cover. Firstly, it not only affects the yield rate of the manufacturing process, but also affects the performance of the product. the

Utility model content

In order to solve the technical problems described in the background technology, the utility model provides a touch panel with fingerprint identification function, including: a fingerprint identification module, which is arranged in a through hole of a first substrate, and the fingerprint identification module The set and the first substrate are attached to a second substrate. the

In one embodiment, a first adhesive layer is disposed between the first substrate and the second substrate to bond the first substrate and the second substrate. the

In one embodiment, a second adhesive layer is disposed between the fingerprint recognition module and the second substrate to bond the fingerprint recognition module and the second substrate. the

In one embodiment, the fingerprint recognition module is fixed in the through hole of the first substrate by a glue. the

In one embodiment, a touch sensing structure is disposed on the surface of the first substrate away from the second substrate. the

In one embodiment, a touch sensing structure is disposed on a surface of the first substrate close to the second substrate. the

In one embodiment, a touch sensing structure is disposed on a surface of the second substrate close to the first substrate. the

In one embodiment, a masking layer is disposed on the surface of the second substrate, between the first substrate and the second substrate, and the orthographic projection on the second substrate at least covers the fingerprint An orthographic projection of the recognition module on the second substrate. the

In one embodiment, the second substrate has a concave portion, and the concave portion overlaps with the orthographic projection of the fingerprint identification module on the second substrate. the

In one embodiment, a shielding structure is located between the first substrate and the second substrate, and is disposed around the fingerprint recognition module. the

In one embodiment, a shielding structure is located between the second substrate and the shielding layer, and is disposed around the fingerprint identification module. the

In one embodiment, the shielding layer is located between the second substrate and a shielding structure, and the shielding structure is disposed around the fingerprint identification module. the

In the utility model, the fingerprint identification module is arranged in the through hole of the first substrate, and then attached to the second substrate to form a touch panel with fingerprint identification function, without the need to use the second substrate for protecting the product, that is, The protective cover of the product is perforated to ensure the integrity of the second substrate and maintain the strength of the second substrate, thereby ensuring product performance. the

Description of drawings

Fig. 1 is the front schematic view of the touch panel with fingerprint recognition function in the utility model;

Fig. 2 is a sectional view along section line AA' of Fig. 1;

Fig. 3A is the icon structure diagram of the touch panel with fingerprint recognition function in the embodiment of the present utility model;

3B is a schematic diagram of a second substrate of a touch panel with a fingerprint recognition function in an embodiment of the present invention;

Fig. 4 is a schematic diagram of a touch sensing structure of a touch panel with a fingerprint recognition function in an embodiment of the present utility model;

5A is a schematic diagram of a shielding structure of a touch panel with a fingerprint recognition function in an embodiment of the present invention;

5B is a schematic diagram of a shielding structure of a touch panel with a fingerprint recognition function in an embodiment of the present invention;

Fig. 6 is the sectional view of Fig. 1 along section line AA ';

Fig. 7 is a sectional view of Fig. 1 along section line AA'. the

Detailed ways

Below in conjunction with accompanying drawing and specific embodiment the utility model is described in further detail. It can be understood that the positional relationship of "upper" and "lower" mentioned below is described according to the positions shown in the figure, so as to facilitate a clear description of the technical solution, and is not a limitation to the technical solution of the present invention. the

Please refer to FIG. 1 and FIG. 2 at the same time. FIG. 1 is a schematic front view of a touch panel with a fingerprint recognition function of the present invention, and FIG. 2 is a cross-sectional view of FIG. 1 along section line AA', showing a preferred embodiment of the present invention. Touch panel with fingerprint recognition function. In this embodiment, the touch panel 100 with fingerprint identification function includes a first substrate 11, the first substrate 11 is provided with a through hole 110; The fingerprint recognition module 12 is arranged in the through hole 110 of the first substrate 11; wherein the first substrate 11 and the fingerprint recognition module 12 are attached to the second substrate 13 through the first adhesive layer 14 and the second adhesive layer 15 respectively together; the touch sensing structure 16 is disposed on the lower surface of the first substrate 11 . the

The second substrate 13 is formed of strengthened glass or hard plastic substrate, which can be used as a protective cover for the touch panel 100 with fingerprint recognition function, wherein the upper surface of the second substrate 13 can be directly touched by the user operate. In order to ensure that the fingerprint identification module 12 can perform fingerprint identification more accurately, the thickness of the second substrate 13 is preferably less than or equal to 0.3 mm. The lower surface of the second substrate 13 is provided with a shielding layer 17, the shielding layer 17 is located between the second substrate 13 and the first adhesive layer 14, and its orthographic projection on the second substrate 13 covers the fingerprint recognition module 12 on the second substrate. Orthographic projection on 13. The shielding layer 17 is formed of opaque ink or photoresist material, and is used to shield some opaque components under the second substrate 13, such as a fingerprint identification module and the like. The shielding layer 17 can be a single-layer structure, or a multi-layer structure formed by stacking multiple layers of materials, which is not limited by the present invention. In this embodiment, in the touch panel 100 with fingerprint recognition function, the area where the shielding layer 17 is located is defined as the non-visible area V2, unless the area outside the visible area V2 is the visible area V1. The non-visible area V2 includes the fingerprint identification area V21, the fingerprint identification module 12 is set in the non-visible area V2, and the area where it is located is defined as the fingerprint identification area V21. the

Please refer to FIG. 3A . FIG. 3A is a schematic diagram of an icon structure of a touch panel with a fingerprint recognition function in an embodiment of the present invention. In order to distinguish the fingerprint identification area V21 from other parts of the non-visible area V2, so that users can accurately and conveniently operate on the fingerprint identification area V21, the embodiment of the utility model hollows out part of the shielding layer 17, and Fill the hollow with a light-shielding material with a color different from that of the shielding layer 17 to form an icon structure 170 for indicating the fingerprint recognition area V21. In the embodiment shown in FIG. 3A, the icon structure 170 is set around the non-visible area V21. In other embodiments of the utility model, the icon structure 170 may also be in other pattern shapes, and the utility model does not limit the identification method of the icon structure 170 . the

Please refer to FIG. 3B. FIG. 3B is a schematic diagram of the second substrate of the touch panel with fingerprint recognition function in the embodiment of the present invention, which depicts another embodiment of the fingerprint recognition area V21 in the present invention. The second substrate 13 is recessed from the upper surface (the surface for the user to perform touch operation) to the lower surface (the surface opposite to the upper surface) in the fingerprint identification area V21 to form a concave portion 130 , and the concave portion 130 is on the second substrate 13 The orthographic projection of and the orthographic projection of the fingerprint recognition module 12 on the second substrate 13 overlap each other, and the user performs a pressing operation on the recessed portion 130 to input fingerprint signals. the

The first substrate 11 is formed of a transparent glass or plastic substrate, and has a through hole 110 thereon for accommodating the fingerprint identification module 12 . The first substrate 11 is bonded to the lower surface of the second substrate 13 through the first adhesive layer 14. In this embodiment, the method of bonding the first substrate 11 and the second substrate 12 is a full bonding method. Specifically, , the first adhesive layer 14 is disposed between the first substrate 11 and the second substrate 13 and completely fills the gap between the two. In other embodiments of the present utility model, the method of pasting the first substrate 11 and the second substrate 13 can also be a frame pasting method. Specifically, the first adhesive layer 14 is disposed on the first substrate 11 and the second substrate 13, but it is only located at the periphery of the bonding area between the first substrate 11 and the second substrate 13. the

The fingerprint recognition module 12 is arranged in the through hole 110 of the first substrate 11, and is attached to the lower surface of the second substrate 13 through the second adhesive layer 15, and the second adhesive layer 15 is arranged between the fingerprint recognition module 12 and the second substrate 13. Between the two substrates 13 . It is worth noting that in the embodiment of the present utility model, the fingerprint recognition module 12 is pre-fixed in the through hole 110 of the first substrate 11 and then attached to the second substrate 13. Colloid 18 is filled between the inner sidewall of the through hole 110 of a substrate 11 and the fingerprint recognition module 12, so that the fingerprint recognition module 12 is fixed in the first substrate 11. It can be understood that the fingerprint recognition module 12 is fixed on the first substrate 11. The manner in the substrate 11 may also be other manners, such as fixing by setting auxiliary components, or interlocking and fixing by controlling the size or shape of the through holes. Since the detailed structure of the fingerprint identification module 12 is well known to those skilled in the art, it will not be repeated here. the

Please refer to FIG. 4 . FIG. 4 is a schematic diagram of a touch sensing structure of a touch panel with a fingerprint recognition function in this embodiment. The touch sensing structure 16 is disposed on the lower surface of the first substrate 11, that is, the surface of the first substrate 11 away from the second substrate 13, including an electrode layer 161 located in the visible area V1 and a wire layer 162 located in the non-visible area V2. , wherein the electrode layer 161 and the wire layer 162 are electrically connected to each other. The electrode layer 161 includes a plurality of first axial electrode shafts 1611, a plurality of second axial electrode shafts 1612 and an insulating layer 1613, wherein the plurality of first axial electrodes 1611 extend along the first direction D1 and are arranged at intervals along the second direction D2. The two axial electrodes 1612 extend along the second direction D2 and are arranged at intervals along the first direction D1. The insulating layer 1613 is composed of a plurality of insulating blocks formed at the intersections of the first axial electrodes 1611 and the second axial electrodes 1612, so as to separate the first axial electrodes 1611 and the second axial electrodes 1612. An axial electrode 1611 and a second axial electrode 1612 are electrically isolated from each other. The first axial electrodes 1611 and the second axial electrodes 1612 are electrically connected to the wire layer 162 respectively. The first axial electrode 1611 and the second axial electrode 1612 are transparent conductive structures, and their materials can be one or more of conductive materials such as indium tin oxide, nano-silver, graphene, carbon nanotubes, and metal grids. . The insulating layer 1613 is a transparent insulating structure, and its material may be silicon dioxide, transparent photoresist, and the like. The wire layer 162 is made of metal material, located in the non-visible area V2, and disposed under the shielding layer 17. The wire layer 162 is covered by the shielding layer 17 and cannot be seen by the user. In this embodiment, the touch sensing structure 16 is a sensing structure of a single-layer conductive material. In other embodiments of the present invention, it can also be a sensing structure of a double-layer or multi-layer conductive material. This is the limit. the

The touch panel 100 with fingerprint identification function of the present invention may further include a shielding structure 19 located between the first substrate 11 and the second substrate 13 and arranged around the fingerprint identification module 12 . The shielding structure 19 is used to provide the function of shielding electromagnetic noise for the fingerprint identification module 12. In this embodiment, the shielding structure 19 is a ring-shaped metal structure, which is arranged on the surface of the first substrate 11 and is located between the first substrate 11 and the first substrate 11. Between the first adhesive layer 14, it is worth noting that in other embodiments of the present invention, please refer to FIG. 5A and FIG. 5B respectively. The shielding structure 19 can also be arranged between the second substrate 13 and the first adhesive layer 14. . the

Please refer to FIG. 5A . FIG. 5A is a schematic structural diagram of a touch panel with a fingerprint recognition function according to an embodiment of the present invention. The shielding structure 19 is arranged on the lower surface of the second substrate 13, and is located between the second substrate 13 and the shielding layer 17. Since the shielding structure 19 is formed of a metal material, its color can be distinguished from the shielding layer 17, and it is arranged on the second substrate 13. Between the substrate 13 and the shielding layer 17, the user can see the shielding structure 19 from the touch operation surface, so when it is arranged around the fingerprint identification area V2, it can be used to indicate the fingerprint identification area V21, so that other indicating structures can be omitted. the

Please refer to FIG. 5B . FIG. 5B is a schematic structural diagram of a touch panel with a fingerprint recognition function according to an embodiment of the present invention. The shielding structure 19 is arranged between the shielding layer 17 and the first adhesive layer 14, corresponding to the hollowed out place of the shielding layer 17 in the embodiment shown in FIG. The shielding structure 19 can be seen from the hollow of the shielding layer 17, so as to realize the function of indicating the fingerprint recognition area V21 at the same time, and omit the step of filling other shielding materials in FIG. 3A. It should be noted that the shielding structure 19 in this embodiment is an independently formed metal element, which is arranged directly below the hollow of the shielding layer 17, and the user can see the shielding structure 19 through the hollow of the shielding layer 17, in other words , the hollow out of the shielding layer 17 is in an empty state, and in other embodiments of the present utility model, the shielding structure 19 can be formed on the surface of the shielding layer 17 by sputtering or printing, so the hollow out of the shielding layer 17 may be The material filled into the shielding structure 19 , from the perspective of the final structure, the shielding structure 19 is partially or completely embedded in the shielding layer 17 . the

The above-mentioned first adhesive layer 14 , second adhesive layer 15 and glue 18 have their own material properties. The first adhesive layer 14 is formed by transparent optical bonding glue, which can be a solid film or a liquid glue. The second adhesive layer 15 is formed by explosion-proof optical glue, which has a weaker shielding effect on electrical signals than ordinary optical glue. The attenuation of the electrical signal transmitted from the upper surface of the second substrate 13 to the fingerprint identification module 12 has little effect on the sensitivity of the fingerprint identification module 12 . The glue 18 is a liquid glue with fluidity, which can be flexibly filled between the sidewall of the through hole 110 of the first substrate 11 and the fingerprint identification module 12 . the

The utility model embeds the fingerprint recognition module 12 into the first substrate 11 and attaches it to the complete second substrate 13 to form a touch panel 100 with fingerprint recognition function without perforating the second substrate 13. The strength of the second substrate 13 itself is not affected, and the performance of the product is guaranteed. In addition, the setting of the fingerprint recognition module 12 is not limited by the active button, which not only omits the complicated packaging structure for the active button, but also allows flexible setting In the touch panel, on the premise of ensuring that the fingerprint identification function can also be realized, the structure of the product is simplified, and the flexibility of product design is improved. the

In the above embodiments, the touch sensing structure 16 is set on the lower surface of the first substrate 11 as an example, in other embodiments of the present invention, the touch sensing structure 16 can also be set at other positions, please refer to FIG. 1 at the same time. and FIG. 6 , FIG. 6 is a cross-sectional view along the section line AA' of FIG. 1 , showing a touch panel with a fingerprint recognition function according to another preferred embodiment of the present invention. the

The difference between this embodiment and the previous embodiment is that the touch sensing structure 16 is disposed on the upper surface of the first substrate 11, that is, disposed on the surface of the first substrate 11 close to the second substrate 13, sandwiched between the first substrate 11 and the second substrate 13. Between the first adhesive layer 14, in addition, the touch panel 101 with fingerprint identification function in this embodiment further includes a conductive material layer 20, which is disposed on the lower surface of the first substrate 11, and is used to provide the touch sensing structure 16 The function of shielding electromagnetic noise. The conductive material layer 20 is formed of a transparent conductive material and is a whole-surface structure, or is only disposed on the periphery of the lower surface of the first substrate 11 to form a ring structure, which is not limited by the present invention. The other components of the touch panel 101 with fingerprint identification function in this embodiment and the connection relationship between them are substantially the same as those in the previous embodiment, and will not be repeated here. the

Please refer to FIG. 1 and FIG. 7 at the same time. FIG. 7 is a cross-sectional view of FIG. 1 along the section line AA', showing a touch panel with fingerprint recognition function according to another preferred embodiment of the present invention. The difference between this embodiment and the previous embodiment is that the touch sensing structure 16 is disposed on the lower surface of the second substrate 13, that is, the surface of the second substrate 13 close to the first substrate 11, and the shielding layer 17 is located on the second substrate. 16 and the touch sensing structure 16 . In the touch panel 102 with fingerprint identification function of this embodiment, the touch sensing structure 16 is directly arranged on the surface of the second substrate 13, the fingerprint identification module 12 is arranged in the through hole of the first substrate 11, and then the two Bonding avoids the mutual influence between multiple processes that need to form the touch sensing structure 16 on the first substrate 11 and fix it with the fingerprint recognition module 12. The difficulty of the related process can improve the process yield to a certain extent, and the touch sensing structure 16 is arranged on the lower surface of the second substrate 13, making it closer to the user's operation surface, so that the user's touch signal is stronger, thereby improving Sensitivity of the touch sensing structure 16 . The other components and the connections among them in the touch panel 102 with fingerprint identification function in this embodiment are substantially the same as those in the previous embodiment, and will not be repeated here. the

It should be noted that, in the above-mentioned embodiments, the touch sensing structure 16 is directly formed on the surface of the first substrate 11 or the second substrate 13. In other embodiments of the present utility model, the touch sensing structure 16 can also be pre-formed. It is formed on a film, and then the film is attached to the surface of the first substrate 11 or the second substrate 13 , which is not limited by the present invention. the

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. within the spirit and principles of the present utility model shall include Within the protection scope of the utility model. the

Claims (12)

1. have a contact panel for fingerprint identification function, it is characterized in that, comprise: a fingerprint recognition module, be arranged in a through hole of a first substrate, described fingerprint recognition module and described first substrate and a second substrate fit.

2. have the contact panel of fingerprint identification function as claimed in claim 1, it is characterized in that, one first bonding coat is arranged between described first substrate and described second substrate, with described first substrate and the described second substrate of fitting.

3. have the contact panel of fingerprint identification function as claimed in claim 2, it is characterized in that, one second bonding coat is arranged between described fingerprint recognition module and described second substrate, with described fingerprint recognition module and the described second substrate of fitting.

4. have the contact panel of fingerprint identification function as claimed in claim 1, it is characterized in that, described fingerprint recognition module is fixed in the described through hole of described first substrate by colloid.

5. have the contact panel of fingerprint identification function as claimed in claim 1, it is characterized in that, a touch-control sensing structure is arranged at the surface of described first substrate away from described second substrate.

6. have the contact panel of fingerprint identification function as claimed in claim 1, it is characterized in that, a touch-control sensing structure is arranged at the surface of described first substrate near described second substrate.

7. have the contact panel of fingerprint identification function as claimed in claim 1, it is characterized in that, a touch-control sensing structure is arranged at the surface of described second substrate near described first substrate.

8. there is the contact panel of fingerprint identification function as claimed in claim 1, it is characterized in that, one shielding layer is arranged at the surface of described second substrate, between described first substrate and described second substrate, and the orthogonal projection on described second substrate at least covers the orthogonal projection of described fingerprint recognition module on described second substrate.

9. have the contact panel of fingerprint identification function as claimed in claim 1, it is characterized in that, described second substrate has a depressed part, described depressed part and the orthogonal projection of described fingerprint recognition module on described second substrate overlapped.

10. have the contact panel of fingerprint identification function as claimed in claim 1, it is characterized in that, a shielding construction between described first substrate and described second substrate, and is surrounded on the setting of described fingerprint recognition module.

11. contact panels as claimed in claim 8 with fingerprint identification function, is characterized in that, a shielding construction between described second substrate and described shielding layer, and is surrounded on described fingerprint recognition module and arranges.

12. contact panels as claimed in claim 8 with fingerprint identification function, it is characterized in that, more comprise a shielding construction, described shielding layer is between described second substrate and described shielding construction, and described shielding construction is surrounded on described fingerprint recognition module and arranges.