Fingerprint recognition components and smart terminals

Abstract

The embodiment of the present invention proposes a fingerprint recognition component and a smart terminal, which relate to the field of fingerprint recognition technology. The fingerprint recognition component connects a glass cover plate, a cover plate decoration layer, an optical ink layer and an optical fingerprint sensor in sequence, and sets a plurality of light holes on the cover plate decoration layer, so that light passing through the glass cover plate can be directly projected to the optical ink layer through the plurality of light holes, and the optical ink layer can receive external light through the light holes, so that the optical fingerprint sensor can still sense light and recognize fingerprints after the optical ink layer is covered by the cover plate decoration layer. At the same time, since only light holes are set on the cover plate decoration layer, there will be no color difference between the sensing area and the non-sensing area of ​​the fingerprint recognition component, making the fingerprint recognition component more beautiful and providing users with a good visual experience.

Description

Technical Field

[0001] The present invention relates to the technical field of fingerprint recognition, and in particular to a fingerprint recognition component and an intelligent terminal. Background Art

[0002] Fingerprint sensors are key components for automatic fingerprint collection. According to the sensing principle, i.e. fingerprint imaging principle and technology, fingerprint sensors can be divided into optical fingerprint sensors, semiconductor capacitive sensors, semiconductor thermal sensors, semiconductor pressure sensors, ultrasonic sensors and radio frequency RF sensors. The manufacturing technology of fingerprint sensors is a high-tech with strong comprehensiveness, high technical complexity and difficult manufacturing process.

[0003] Among them, the optical fingerprint sensor mainly uses the principle of light refraction and reflection. The light is emitted from the bottom to the prism and then emitted through the prism. The angle of refraction of the emitted light on the uneven lines of the fingerprint on the surface of the finger and the brightness of the reflected light will be different. The optical device of CMOS or CCD will collect image information of different brightness and darkness, thus completing the fingerprint collection.

[0004] When collecting fingerprints, the optical fingerprint sensor needs to be in contact with the finger whose fingerprint is collected, but cannot be in direct contact. Usually, a glass cover is added to the surface of the optical fingerprint sensor. The optical fingerprint sensor includes a sensing area and a non-sensing area. In order for the optical fingerprint sensor to sense light, the color layer of the sensing area is usually removed directly to expose the light-sensitive optical ink layer, resulting in obvious color differences between the sensing area and the non-sensing area, which will cause a bad visual experience on the product appearance. Summary of the invention

[0005] The object of the present invention is to provide a fingerprint recognition component to improve the problem of obvious color difference between the sensing area and the non-sensing area.

[0006] Another object of the present invention is to provide a smart terminal, which improves the problem of obvious color difference between the sensing area and the non-sensing area by applying the above-mentioned fingerprint recognition component.

[0007] In order to achieve the above purpose, the technical solution adopted by the embodiment of the present invention is as follows:

[0008] In a first aspect, the present invention provides a fingerprint recognition component, which includes: a glass cover plate, a cover plate decoration layer, an optical ink layer and an optical fingerprint sensor, wherein the glass cover plate, the cover plate decoration layer, the optical ink layer and the optical fingerprint sensor are connected in sequence, and a plurality of light holes are provided in an area opposite to the cover plate decoration layer and the optical ink layer.

[0009] Furthermore, the cover plate decoration layer is an ink layer structure.

[0010] Furthermore, the cover plate decoration layer includes a color layer and an electroplating layer, one side of the color layer is connected to one side of the electroplating layer, the other side of the color layer is connected to the optical ink layer, the other side of the electroplating layer is connected to the glass cover plate, and the plurality of light holes penetrate the color layer.

[0011] Furthermore, the cover plate decoration layer is a film structure.

[0012] Furthermore, the film structure includes a PET layer, an electroplating layer and a color layer, the PET layer, the electroplating layer and the color layer are connected in sequence, the color layer is connected to the optical ink layer, and a plurality of light holes penetrate the color layer.

[0013] Furthermore, the film structure further includes an optical adhesive layer, and two sides of the optical adhesive layer are respectively connected to the glass cover plate and the PET layer.

[0014] Furthermore, the color layer includes a first color layer and a second color layer.

[0015] Furthermore, the color layer is made of photosensitive ink.

[0016] Furthermore, the fingerprint recognition component also includes a glue layer, and the optical ink layer is adhered to the optical fingerprint sensor through the glue layer.

[0017] In a second aspect, the present invention provides an intelligent terminal, comprising a shell, a circuit board and a fingerprint recognition component, wherein the fingerprint recognition component comprises: a glass cover plate, a cover plate decoration layer, an optical ink layer and an optical fingerprint sensor, the glass cover plate, the cover plate decoration layer, the optical ink layer and the optical fingerprint sensor are connected in sequence, a plurality of light holes are provided in an area where the cover plate decoration layer and the optical ink layer are arranged opposite to each other, the circuit board is arranged in the shell, the fingerprint recognition component is embedded in the shell, and a side of the fingerprint recognition component provided with the optical fingerprint sensor is connected to the circuit board.

[0018] A fingerprint recognition component provided by an embodiment of the present invention connects a glass cover plate, a cover plate decoration layer, an optical ink layer and an optical fingerprint sensor in sequence, and sets a plurality of light-through holes on the cover plate decoration layer, so that light passing through the glass cover plate can be directly projected to the optical ink layer through the plurality of light-through holes, and the optical ink layer can receive external light through the light-through holes, so that the optical fingerprint sensor can still sense light and recognize fingerprints after the optical ink layer is covered by the cover plate decoration layer. At the same time, since only the light-through holes are set on the cover plate decoration layer, there will be no color difference between the sensing area and the non-sensing area of ​​the fingerprint recognition component, which makes the fingerprint recognition component more beautiful and can also bring a good visual experience to the user.

[0019] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 A schematic structural diagram of a fingerprint recognition component provided by the first embodiment of the present invention is shown.

[0022] Figure 2 A schematic structural diagram of a fingerprint recognition component provided by a second embodiment of the present invention is shown.

[0023] Figure 3 A schematic diagram of the structure of an intelligent terminal provided by the third embodiment of the present invention is shown.

[0024] Figure 4 Shows Figure 3 Cross-sectional view at point Ⅰ.

[0025] Icon: 100-fingerprint recognition component; 110-glass cover; 120-cover decoration layer; 121-electroplating layer; 122-first color layer; 123-second color layer; 124-optical glue layer; 125-PET layer; 130-optical ink layer; 140-optical fingerprint sensor; 150-light hole; 160-glue layer; 200-smart terminal; 210-housing; 220-circuit board. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. The components of the embodiments of the present invention generally described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents the selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative work belong to the scope of protection of the present invention.

[0027] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0028] Meanwhile, in the description of the present invention, the terms “first”, “second”, etc. are only used to distinguish the descriptions and cannot be understood as indicating or implying relative importance.

[0029] In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "left", "right", "inside", "outside", etc. are based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the product of the invention is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0030] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly stipulated and limited, the terms "set", "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements.

[0031] Terms such as "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but may be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but may be slightly tilted. The terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "including one..." do not exclude the existence of other identical elements in the process, method, article or device including the elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] Some embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0033] First embodiment

[0034] See also Figure 1, shows a schematic diagram of the structure of a fingerprint recognition component 100 provided by an embodiment of the present invention. The fingerprint recognition component 100 is applied to a smart terminal 200 for identifying fingerprints, and includes a glass cover 110, a cover decoration layer 120, an optical ink layer 130 and an optical fingerprint sensor 140, wherein the glass cover 110, the cover decoration layer 120, the optical ink layer 130 and the optical fingerprint sensor 140 are connected in sequence.

[0035] The glass cover plate 110 is used to attach the cover plate decoration layer 120, the optical ink layer 130 and the optical fingerprint sensor 140 to prevent the optical fingerprint sensor 140 from directly contacting the finger, so that the optical fingerprint sensor 140 is not easily interfered by the outside world. In addition, it should be noted that the glass cover plate 110 can be the front cover of the smart terminal 200 or the back cover of the smart terminal 200, and no specific limitation is made here.

[0036] One side of the cover plate decoration layer 120 is connected to the glass cover plate 110, and the other side of the cover plate decoration layer 120 is connected to the optical ink layer 130, and a plurality of light holes 150 are provided in the area where the cover plate decoration layer 120 and the optical ink layer 130 are arranged opposite to each other. The cover plate decoration layer 120 is used to decorate the optical fingerprint sensor 140, so that the fingerprint recognition component 100 presents a better visual experience to the user.

[0037] In this embodiment, the cover plate decoration layer 120 is an ink layer structure, which is formed on the back of the glass cover plate 110 by spraying, silk-screening or other coating methods.

[0038] Specifically, the cover decoration layer 120 includes a color layer and an electroplating layer 121, one side of the electroplating layer 121 is connected to the glass cover 110, the other side of the electroplating layer 121 is connected to one side of the color layer, the other side of the color layer is connected to the optical ink layer 130, and multiple light holes 150 penetrate the color layer.

[0039] Among them, by providing the electroplating layer 121, the corrosion resistance of the cover decoration layer 120 can be effectively improved, and at the same time, the appearance of the cover decoration layer 120 can be made more beautiful, so that the fingerprint recognition component 100 can provide a better visual experience for the user.

[0040] By providing the color layer, the appearance of the cover plate decoration layer 120 can also be made more attractive and beautiful. It should be noted that the color of the color layer can be set according to the needs of the user, and no specific limitation is made here.

[0041] It should also be noted that, since the fingerprint recognition component 100 includes the optical fingerprint sensor 140 , in order to enable the optical fingerprint sensor 140 to sense light, the color layer is coated with photosensitive ink.

[0042] In a preferred embodiment, the color layer includes a first color layer 122 and a second color layer 123 .

[0043] By providing a plurality of light-through holes 150 and penetrating the color layer, light passing through the glass cover plate 110 can be transmitted to the optical ink layer 130 through the light-through holes 150, so that the optical fingerprint sensor 140 can still sense light and identify fingerprints after the optical ink layer 130 is covered by the cover plate decoration layer 120.

[0044] In a preferred embodiment, the plurality of light-through holes 150 are manufactured by yellow light process (exposure and development), have good light transmittance, and cannot be directly observed and identified by human eyes.

[0045] In addition, it should be noted that there is no specific limitation on the shape and size of each light-through hole 150. For example, in a preferred embodiment, the plurality of light-through holes 150 may all be circular; in another preferred embodiment, the plurality of light-through holes 150 may all be rectangular; in other preferred embodiments, some of the plurality of light-through holes 150 may be circular, some may be rectangular, and some may be irregular.

[0046] It should also be noted that there is no specific limitation on the arrangement of the plurality of light-through holes 150. For example, the plurality of light-through holes 150 may be arranged regularly or irregularly, and only need to be arranged in the area corresponding to the optical ink layer 130.

[0047] The optical ink layer 130 is coated on the upper end of the optical fingerprint sensor 140 to assist the optical fingerprint sensor 140 in sensing light.

[0048] It can be understood that the area where the optical ink layer 130 is located is the sensing area of ​​the fingerprint recognition component 100. The optical ink layer 130 receives external light through the light hole 150, so that the optical fingerprint sensor 140 senses the light and recognizes the fingerprint.

[0049] In this embodiment, the fingerprint identification component 100 further includes a glue layer 160 . The glue layer 160 is disposed between the optical ink layer 130 and the optical fingerprint sensor 140 to bond the optical ink layer 130 and the optical fingerprint sensor 140 .

[0050] The optical fingerprint sensor 140 is used to identify fingerprints. It should be noted that the optical fingerprint sensor 140 can be attached to the bottom of the glass cover plate 110 or to the middle of the glass cover plate 110, and the specific position can be set according to the needs of the user.

[0051] Second embodiment

[0052] The embodiment of the present invention further provides another fingerprint recognition component 100. It should be noted that the basic principle and technical effects of the fingerprint recognition component 100 provided in the embodiment of the present invention are the same as those in the above embodiment. For the sake of brief description, for parts not mentioned in this embodiment, reference may be made to the corresponding contents in the above embodiment.

[0053] See also Figure 2 , shows a schematic structural diagram of a fingerprint recognition component 100 provided by an embodiment of the present invention. The fingerprint recognition component 100 is used to recognize fingerprints, and includes a glass cover 110, a cover decoration layer 120, an optical ink layer 130 and an optical fingerprint sensor 140, which are connected in sequence.

[0054] One side of the cover plate decoration layer 120 is connected to the glass cover plate 110, and the other side of the cover plate decoration layer 120 is connected to the optical ink layer 130, and a plurality of light holes 150 are provided in the area where the cover plate decoration layer 120 and the optical ink layer 130 are arranged opposite to each other. The cover plate decoration layer 120 is used to decorate the optical fingerprint sensor 140, so that the fingerprint recognition component 100 presents a better visual experience to the user.

[0055] Different from the first embodiment, in this embodiment, the cover plate decoration layer 120 is a film structure and is bonded to the back of the glass cover plate 110 .

[0056] Specifically, the film structure includes an optically clear adhesive layer 124 (OCA), a PET layer 125, a color layer and an electroplating layer 121. The optical adhesive layer 124, the PET layer 125, the electroplating layer 121 and the color layer are connected in sequence. The optical adhesive layer 124 is connected to the glass cover plate 110, the color layer is connected to the optical ink layer 130, and a plurality of light holes 150 penetrate the color layer.

[0057] OCA is a special adhesive used to bond transparent optical elements, which can make the cover plate decoration layer 120 bonded to the back of the glass cover plate 110 .

[0058] PET, also known as high temperature resistant polyester, has transparency and excellent dimensional stability and is used to protect the optical fingerprint sensor 140 .

[0059] Among them, by providing the electroplating layer 121, the corrosion resistance of the cover decoration layer 120 can be effectively improved, and at the same time, the appearance of the cover decoration layer 120 can be made more beautiful, so that the fingerprint recognition component 100 can provide a better visual experience for the user.

[0060] By providing the color layer, the appearance of the cover plate decoration layer 120 can also be made more attractive and beautiful. It should be noted that the color of the color layer can be set according to the needs of the user, and no specific limitation is made here.

[0061] It should also be noted that, since the fingerprint recognition component 100 includes the optical fingerprint sensor 140 , in order to enable the optical fingerprint sensor 140 to sense light, the color layer is coated with photosensitive ink.

[0062] By providing a plurality of light through holes 150 and penetrating the color layer, light passing through the glass cover 110 can be transmitted through the light through holes 150 to the optical ink layer 130 and finally sensed by the optical fingerprint sensor 140 for fingerprint recognition.

[0063] In a preferred embodiment, the plurality of light-through holes 150 are manufactured by yellow light process (exposure and development), have good light transmittance, and cannot be directly observed and identified by human eyes.

[0064] In addition, it should be noted that there is no specific limitation on the shape, size and arrangement of each light-through hole 150 .

[0065] Third embodiment

[0066] See also Figure 3 , is a schematic diagram of the structure of the smart terminal 200 provided by an embodiment of the present invention. The present invention provides a smart terminal 200, including a circuit board 220, a housing 210 and a fingerprint recognition component 100. The circuit board 220 is arranged in the housing 210, the fingerprint recognition component 100 is embedded in the housing 210, and the fingerprint recognition component 100 is provided with an optical fingerprint sensor 140 on one side connected to the circuit board 220 (such as Figure 4 shown).

[0067] In a preferred embodiment, the circuit board 220 is a flexible circuit board.

[0068] In summary, a fingerprint recognition component provided by an embodiment of the present invention connects a glass cover plate, a cover plate decorative layer, an optical ink layer and an optical fingerprint sensor in sequence, and sets a plurality of light-through holes on the cover plate decorative layer, so that light passing through the glass cover plate can be directly projected to the optical ink layer through the plurality of light-through holes, and the optical ink layer can receive external light through the light-through holes, so that the optical fingerprint sensor can still sense light and recognize fingerprints after the optical ink layer is covered by the cover plate decorative layer. At the same time, since only the light-through holes are set on the cover plate decorative layer, there will be no color difference between the sensing area and the non-sensing area of ​​the fingerprint recognition component, which makes the fingerprint recognition component more beautiful and can also bring a good visual experience to the user.

[0069] 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 modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention. It should be noted that similar numbers and letters represent similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

Claims

1. A fingerprint recognition component, characterized in that: The fingerprint recognition component comprises: a glass cover plate, a cover plate decoration layer, an optical ink layer and an optical fingerprint sensor, wherein the glass cover plate, the cover plate decoration layer, the optical ink layer and the optical fingerprint sensor are connected in sequence, and a plurality of light holes are arranged in an area where the cover plate decoration layer and the optical ink layer are opposite to each other; The cover plate decoration layer includes a color layer and an electroplating layer, one side of the color layer is connected to one side of the electroplating layer, the other side of the color layer is connected to the optical ink layer, and the other side of the electroplating layer is connected to the glass cover plate, and a plurality of light holes penetrate the color layer to project light passing through the glass cover plate to the optical ink layer through the light holes.

2. The fingerprint recognition component according to claim 1, characterized in that: The cover plate decoration layer is an ink layer structure.

3. The fingerprint recognition component according to claim 1, characterized in that: The cover plate decorative layer is a film structure.

4. The fingerprint recognition component according to claim 3, characterized in that: The film structure includes a PET layer, a color layer and an electroplating layer. The PET layer, the electroplating layer and the color layer are connected in sequence. The color layer is connected to the optical ink layer. A plurality of light holes penetrate the color layer.

5. The fingerprint recognition component according to claim 4, characterized in that: The film structure further includes an optical adhesive layer, and two sides of the optical adhesive layer are respectively connected to the glass cover plate and the PET layer.

6. The fingerprint recognition component according to any one of claims 1, 4 and 5, characterized in that: The color layer includes a first color layer and a second color layer.

7. The fingerprint recognition component according to claim 6, characterized in that: The color layer adopts photosensitive ink.

8. The fingerprint recognition component according to any one of claims 1 to 5, characterized in that: The fingerprint identification component also includes a glue layer, and the optical ink layer is adhered to the optical fingerprint sensor through the glue layer.

9. An intelligent terminal, characterized in that: It comprises a circuit board, a shell and a fingerprint recognition component as described in any one of claims 1 to 8, wherein the circuit board is arranged in the shell, the fingerprint recognition component is embedded in the shell, and the fingerprint recognition component is provided with a side of an optical fingerprint sensor connected to the circuit board.

Images