CN204347860U - A kind of fingerprint recognition detection components and electronic equipment - Google Patents

Abstract

The utility model discloses a kind of fingerprint recognition detection components and electronic equipment, this fingerprint recognition detection components comprises: cover plate, comprises sensing face and circuit face; And fingerprint sensor, is formed in the circuit face of described cover plate; Wherein, the vertical range between the touch point of described sensing face sensing and described fingerprint sensor is less than 30 microns.The utility model, by being formed directly on the surface of cover plate by fingerprint sensor, highly shortened the distance between touch point and fingerprint sensor, improves sensitivity and the accuracy of fingerprint recognition.

Description

A fingerprint identification detection component and electronic equipment

technical field

The utility model relates to a fingerprint identification and detection component and electronic equipment, in particular to a fingerprint identification and detection component with a fingerprint identification sensor directly arranged on the back of a panel and electronic equipment including the fingerprint identification and detection component.

Background technique

Certain biometric features of the human body (such as fingerprints/palmprints) are unique to the human body, and their complexity can provide a sufficient number of features for identification.

Fingerprint/palmprint and other identification technologies are currently the most mature and cheap biometric identification technologies. Fingerprint identification technology has been widely used. Not only can we see fingerprint recognition technology in access control and attendance systems, but there are more fingerprint recognition applications in the market: such as laptops, mobile phones, cars, and bank payments can all apply fingerprint recognition technology. Especially with the continuous development of smart phones, there will be a large number of demands related to fingerprint identification, such as using fingerprint identification to unlock mobile phones, protect private information, and ensure transaction security.

The sensitivity and accuracy of fingerprint recognition are directly related to the distance between the touch point and the fingerprint recognition sensor. If the vertical distance between the touch point and the fingerprint recognition sensor is too large (greater than 30 microns), it will greatly reduce the ability of the fingerprint recognition sensor to recognize fingerprints, or even fail to recognize fingerprints at all.

Utility model content

One of the purposes of the present utility model is to provide a highly sensitive and accurate fingerprint identification and detection component.

Another object of the present invention is to provide an electronic device including the above-mentioned fingerprint identification and detection component.

The fingerprint identification and detection assembly of the present invention includes: a cover plate including a sensing surface and a circuit surface; and,

A fingerprint sensor is formed on the circuit surface of the cover plate; wherein, the vertical distance between the touch point sensed by the sensing surface and the fingerprint sensor is less than 30 microns.

Further, the cover plate is configured such that the fingerprint sensor can detect a fingerprint when a finger is swiped on the sensing surface.

Further, the cover plate is configured such that when a finger is pressed on the sensing surface, the fingerprint sensor can detect a fingerprint.

Further, it also includes a control chip installed on the circuit surface of the cover plate and electrically connected to the fingerprint sensor through wires.

Further, the control chip is mounted on the circuit surface of the cover plate through the ACF.

Further, it also includes an FPC and a control chip, the FPC is arranged on the circuit surface of the cover plate and is electrically connected to the fingerprint sensor through a wire, the control chip is installed on the FPC and connected to the fingerprint sensor electrical connection.

Further, the FPC is installed on the circuit surface of the cover plate through the ACF.

Further, the cover plate is a ceramic cover plate, a quartz glass cover plate, a tempered glass cover plate or a sapphire cover plate.

The electronic device of the present invention includes the above-mentioned fingerprint identification and detection component.

The utility model greatly shortens the distance between the touch point and the fingerprint sensor by directly forming the fingerprint sensor on the surface of the cover plate, and improves the sensitivity and accuracy of fingerprint recognition.

Description of drawings

The above and other features and advantages of the present disclosure will become more apparent by describing in detail example embodiments thereof with reference to the accompanying drawings.

Fig. 1 is a rear view structural schematic diagram of a fingerprint identification and detection assembly according to an embodiment of the present invention;

Fig. 2 is a side view structural schematic diagram of a fingerprint identification and detection component according to an embodiment of the present invention;

Fig. 3 is a front structural diagram of a fingerprint identification and detection component according to an embodiment of the present invention.

Wherein, the reference signs are explained as follows:

Fingerprint identification detection component 10

Cover 101

Fingerprint Sensor 102

Control chip 103

Leads 104

circuit board 105

Detailed ways

Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully incorporate the concepts of example embodiments. communicated to those skilled in the art. The same reference numerals denote the same or similar structures in the drawings, and thus their repeated descriptions will be omitted.

The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided in order to give a thorough understanding of embodiments of the invention. However, those skilled in the art should appreciate that the technical solutions of the present invention can also be practiced without one or more of the specific details, or with other methods, components, materials, etc. In some instances, well-known structures, materials, or operations are not shown or described in detail to avoid obscuring the invention.

The accompanying drawings of the utility model are only used to illustrate the relative positional relationship and electrical connection relationship. The layer thickness of some parts is drawn in an exaggerated way for easy understanding. The layer thickness in the drawings does not represent the proportional relationship of the actual layer thickness.

As shown in Figure 1, the fingerprint identification detection assembly 10 of this embodiment includes a cover plate 101, the cover plate 101 includes a sensing surface and a circuit surface; and a fingerprint sensor 102, and the fingerprint sensor 102 is directly arranged on the circuit of the cover plate 101 face.

In this embodiment, the fingerprint sensor 102 is directly formed on one surface of the cover plate 101 . As shown in FIG. 2 , when the user performs fingerprint identification on the opposite surface of the cover 101 , the vertical distance between the touch point and the fingerprint sensor 102 is very short, substantially only about the thickness of the cover 101 , which is smaller than the working distance (30 microns) that the fingerprint sensor can sense the fingerprint, which greatly improves the sensitivity and accuracy of fingerprint recognition.

Wherein, the cover plate is configured such that the fingerprint sensor can detect a fingerprint when a finger is scratched or pressed on the sensing surface.

In this embodiment, the fingerprint sensor 102 is electrically connected to the control chip 103 through the wire 104 . Wherein, the control chip 103 can be directly adhered on the circuit board 105 through the ACF conductive glue, so that it is electrically connected with the circuit board 105, but this kind of connection method is not limited to limit the scope of the present utility model, those skilled in the art can pass Other common methods are used to electrically connect the control chip 103 to the circuit board 105 . The lead wire 104 is formed on the circuit board 105, one end of which is connected to the fingerprint sensor 102, and the other end is connected to the circuit board 105, so that the fingerprint sensor 102 is electrically connected to the circuit board 105. From the above, it can be seen that the circuit board 105 is electrically connected to the control chip 103. , so that the fingerprint sensor 102 is indirectly electrically connected to the control chip 103 through the circuit board 105 to receive and process the data transmitted from the fingerprint sensor 102 . Wherein, the circuit board 105 may be a flexible circuit board. In this embodiment, the fingerprint sensor 102 and the control chip 103 are indirectly connected through the circuit board 105, so that the connection operation between the fingerprint sensor 102 and the control chip 103 becomes simpler. It should also be noted that the electrical connection between the fingerprint sensor 102 and the control chip 103 is not limited to this, and the circuit board 105 can also be omitted, and the fingerprint sensor 102 and the control chip 103 are directly connected, and the control chip 103 is adhered to the surface through the ACF conductive adhesive. The circuit surface of the cover plate 101 .

In the above embodiment, the lead wire 104 is formed on the circuit board 105. Optionally, the lead wire 104 can also be formed on the surface of the cover plate 101, and as mentioned above, one end thereof is connected to the fingerprint sensor 102, and the other end is connected to the circuit board 105. .

As shown in FIGS. 1 and 3 , in this embodiment, the fingerprint sensor 102 is formed on the lower part of the surface of the cover 101 and located in a non-display area on the cover 101 , so as to facilitate the user to perform fingerprint recognition operations. Of course, the position of the fingerprint sensor 102 on the cover plate 101 is not necessarily limited to the lower part of the surface of the cover plate 101, and can also be located on the upper, left or right part of the surface of the cover plate according to actual design needs, or even be located on the The display area on the cover plate 101.

The fingerprint sensor 102 may include a plurality of fingerprint recognition units (not shown in the figure) arranged in a matrix. The fingerprint identification unit may include sensing electrodes (not shown in the figure) and driving electrodes (not shown in the figure).

When a finger is pressed over the sensor 102, the fingerprint sensor 102 can obtain the entire fingerprint image at one time without sliding the finger. In order to obtain the entire fingerprint image, a single or a group of fingerprint identification units can be identified and sampled to obtain a unit fingerprint image reflecting fingerprint ridges or fingerprint valleys until the identification and sampling of all units is completed. Fingerprinting units can be sampled sequentially by row or column, or randomly.

For example, by sequentially sampling fingerprint recognition units by row, a linear fingerprint image reflecting fingerprint ridges and fingerprint valleys can be obtained from a row of fingerprint recognition units. Through line-by-line sampling, linear fingerprint images in multiple line directions can be obtained. The multiple linear fingerprint patterns can be assembled into a complete fingerprint image.

The fingerprint sensor 102 can be formed using semiconductor technology, for example, by deposition, photolithography, etching and other processes. According to some embodiments of the present disclosure, it may also be formed by a printing or embossing process. The cover plate 101 can be a ceramic cover plate, a quartz glass cover plate, a strengthened glass cover plate or a sapphire cover plate.

In summary, the fingerprint identification detection component and its electronic device of the present invention can realize fingerprint identification on electronic devices such as portable terminals, and do not need to use physical buttons, but perform fingerprint identification on a transparent cover such as a display screen. Recognition shortens the vertical distance between the touch point and the fingerprint sensor, thereby improving the sensitivity and accuracy of fingerprint recognition, especially for Android phones without physical HOME keys.

Exemplary embodiments of the present utility model have been specifically shown and described above. It should be understood that the invention is not limited to the disclosed embodiments, but on the contrary, the invention is intended to cover various modifications and equivalents included within the scope of the appended claims.

Claims (9)

1. A fingerprint identification detection component comprising: a cover plate, including a sensing face and a circuit face; and, a fingerprint sensor formed on the circuit surface of the cover; Wherein, the vertical distance between the touch point sensed by the sensing surface and the fingerprint sensor is less than 30 microns. 2. The fingerprint identification and detection assembly according to claim 1, wherein the cover plate is configured such that the fingerprint sensor can detect a fingerprint when a finger is swiped on the sensing surface. 3. The fingerprint identification detection assembly according to claim 1, wherein the cover plate is configured such that the fingerprint sensor can detect a fingerprint when a finger is pressed on the sensing surface. 4 . The fingerprint recognition and detection assembly according to claim 1 , further comprising a control chip, mounted on the circuit surface of the cover plate and electrically connected to the fingerprint sensor through wires. 5 . The fingerprint identification and detection assembly according to claim 4 , wherein the control chip is mounted on the circuit surface of the cover plate through an ACF. 6. The fingerprint identification and detection assembly according to claim 4, further comprising an FPC and a control chip, the FPC is arranged on the circuit surface of the cover plate and is electrically connected to the fingerprint sensor through a lead wire, The control chip is mounted on the FPC and electrically connected with the fingerprint sensor. 7. The fingerprint identification and detection assembly according to claim 6, wherein the FPC is mounted on the circuit surface of the cover plate through an ACF. 8. The fingerprint identification and detection assembly according to claim 1, wherein the cover is a ceramic cover, a quartz glass cover, a strengthened glass cover or a sapphire cover. 9. An electronic device, comprising the fingerprint identification and detection component according to any one of claims 1-8.