CN111507326A - Biological characteristic acquisition method and device, display panel and electronic equipment - Google Patents

Abstract

The invention discloses a biological feature collection method and device, a display panel and an electronic device. The method for collecting biometric features according to an embodiment of the present invention includes the following steps: forming a first collecting area for collecting biometric features; forming a second collecting area for collecting biometric features; and acquiring the first collecting area and the second collecting area 2. Biometric information in a collection area, wherein the second collection area and the first collection area have different positions. According to the method and device for collecting biometric features, the display panel and the electronic device according to the embodiments of the present invention, the method of collecting multiple light points is adopted to obtain the biometric information at different positions. While reducing the thickness of the screen, a wide range of biometric information can be obtained.

Description

Biometric feature collection method and device, display panel and electronic device

technical field

The present invention relates to the technical field of biological feature collection, in particular to a biological feature collection method and device, a display panel and an electronic device.

Background technique

Biometric identification technology uses sensors to collect biometrics and then compare them with the biometrics stored in the system to identify the identity. The collection of biometrics is an important step in biometric identification.

The biometrics (such as fingerprints, palm prints, etc.) collection technology under the optical screen uses the display screen of a mobile device (such as a mobile phone) as a light source, collects images of biometrics, and then performs authentication or identification. Under-screen biometric recognition technology helps manufacturers achieve a higher screen-to-body ratio when designing full-screen displays.

As shown in FIG. 1 , a finger or palm is placed on the display screen (collection area) of the electronic device 10 to realize the collection of biological features. The existing under-screen biometric collection methods include light spot collection and light point (point light source) collection, as shown in Figure 2 and Figure 3, respectively. Light spot collection mostly uses a uniform circular or oval solid color light spot to collect biometric features (fingerprints). Spot collection needs to add optical auxiliary modules (small holes, lenses, collimators, etc.), which will increase the thickness of the screen. In the light spot collection method, the image collection range is magnified by about 2 times and then imaged, and the center is bright and the edge is dark. As shown in FIG. 3 , the finger is placed on the screen 101 , and the collection unit 202 collects the fingerprint information. In order to obtain a larger collection range, the brightness of the light spot needs to be increased, which will cause the center of the collected image to be saturated and lose the biometric information in the center, as shown in Figure 4(a). The holes in the center of the image are filled, which prolongs the acquisition time, as shown in Figure 4(b).

Therefore, it is desirable to have a new method and device for collecting biological features, a display panel and an electronic device, which can solve the above problems.

SUMMARY OF THE INVENTION

In view of the above problems, the purpose of the present invention is to provide a method and device for collecting biometrics, a display panel and an electronic device, so as to reduce the time for collecting biometrics, increase the area for collecting biometrics, and reduce the thickness of the screen.

According to an aspect of the present invention, there is provided a method for collecting biometrics, comprising the steps of: forming a first collecting area for collecting biometrics; forming a second collecting area for collecting biometrics; and acquiring the first collecting area The biometric information in the area and the second collection area, wherein the second collection area and the first collection area have different locations.

Preferably, a first light spot is generated to form the first collection area; a second light spot is generated to form the second collection area; the brightness values of the first light spot and the second light spot are adjusted to be both lower than or equal to the preset brightness value.

Preferably, the luminance values of the first light spot and the second light spot are adjusted so that the luminance value of the first light spot and the luminance value of the second light spot are the same.

Preferably, the first collection area and the second collection area are formed simultaneously.

Preferably, the first collection area and the second collection area are discontinuous.

According to another aspect of the present invention, there is provided a device for collecting biometrics, comprising: a light source that emits incident light to form a first collecting area and a second collecting area for collecting biometrics; and a collecting unit, located at the reflection of the incident light On the path, it is used to acquire biometric images in the first acquisition area and the second acquisition area, wherein the positions of the second acquisition area and the first acquisition area are different.

Preferably, the biometric acquisition device further includes: a brightness control unit, connected to the light source, for adjusting or controlling the brightness value of the light source.

Preferably, the biometric acquisition device further comprises: an image processing unit connected to the acquisition unit to receive the biometric image and process the biometric image to obtain biometric information.

Preferably, the light source includes a plurality of point light sources, and the plurality of point light sources are used to form a plurality of collection areas for collecting biological features, wherein the plurality of point light sources are distributed in an array.

According to yet another aspect of the present invention, there is provided a display panel including the aforementioned biometric feature collection device.

According to yet another aspect of the present invention, an electronic device is provided, including the aforementioned biometric feature acquisition device, wherein the electronic device is a full screen or a non-face screen.

According to the method and device for collecting biometrics, the display panel and the electronic device according to the embodiments of the present invention, the method of collecting multiple light points is used to obtain biometric information at different positions, so that a wide range of biometric information can be obtained, and the biometrics are increased. collection area.

According to the method and device for collecting biometrics, the display panel and the electronic device according to the embodiments of the present invention, the method of collecting multiple light points is adopted, and the brightness value of each light point is adjusted to be smaller than the preset brightness value, so as to increase the area of collecting biometrics. At the same time, the quality of biometric acquisition is ensured.

The method and device for collecting biometrics, the display panel and the electronic device according to the embodiments of the present invention adopt the method of collecting multiple light points, and do not need additional lenses, collimators, etc., thereby reducing the thickness of the screen.

According to the method and device for collecting biometrics, the display panel and the electronic device according to the embodiments of the present invention, a plurality of light spots are simultaneously lit to collect biometrics, which reduces the time for collecting biometrics.

According to the method and device for collecting biometrics, the display panel and the electronic device according to the embodiments of the present invention, the collecting areas of multiple light spots do not overlap each other, which ensures a larger area for collecting biometrics.

Description of drawings

The above and other objects, features and advantages of the present invention will become more apparent from the following description of embodiments of the present invention with reference to the accompanying drawings, in which:

FIG. 1 shows a schematic diagram of a biometric collection method according to the prior art;

Fig. 2 shows the collection schematic diagram of light spot collection according to the prior art;

Fig. 3 shows the acquisition schematic diagram of light spot acquisition according to the prior art;

FIG. 4 shows a collection effect diagram of light spot collection according to the prior art;

FIG. 5 shows a method flowchart of a method for collecting biological features according to an embodiment of the present invention;

FIG. 6 shows a schematic diagram of collection of biological features according to an embodiment of the present invention;

FIG. 7 shows a schematic diagram of a device for collecting biological features according to an embodiment of the present invention;

FIG. 8 shows a schematic diagram of an electronic device according to an embodiment of the present invention.

Detailed ways

Various embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. In the various figures, the same elements are designated by the same or similar reference numerals. For the sake of clarity, various parts in the figures have not been drawn to scale. Additionally, some well-known parts may not be shown in the drawings.

The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and embodiments. Numerous specific details of the invention are described below, such as the construction of components, materials, dimensions, processing and techniques, in order to provide a clearer understanding of the invention. However, as can be understood by one skilled in the art, the present invention may be practiced without these specific details.

It will be understood that, in describing the structure of a component, when a layer or region is referred to as being "on" or "over" another layer or region, it can be directly on the other layer or region, or Other layers or regions are also included between it and another layer, another region. And, if the part is turned over, that layer, one area, will be "below" or "beneath" another layer, another area.

FIG. 5 shows a method flowchart of a method for collecting biological features according to an embodiment of the present invention. As shown in FIG. 5 , the method for collecting biological features according to an embodiment of the present invention includes the following steps:

In step S501, a first collection area for collecting biological features is formed;

When collecting biometric information, a bright light source is lit to form a first collection area for collecting biometrics. The point light source emits incident light to form a first collection area, where, for example, biometric information (fingerprint, palm print, etc.) is stored in the first collection area. Incident light rays are reflected, for example, on the surface of a finger or palm (in the first acquisition area). Optionally, only a bright light source may be lit when the optical screen is in a black screen state; or a bright light source may be lit when the optical screen is in a bright screen state.

In step S502, a second collection area for collecting biological features is formed;

When collecting biometric information, a bright light source is lit to form a second collecting area for collecting biometrics, wherein the positions of the second collecting area and the first collecting area are different. The point light source emits incident light to form a second collection area, in which, for example, biometric information (fingerprint, palm print, etc.) is obtained. Incident light rays are reflected, for example, on the surface of a finger or palm (in the second acquisition area). Optionally, only the light source can be lit when the optical screen is in a black screen state; a bright light source can also be lit when the optical screen is in a bright screen state.

In step S503, biometric information in the first collection area and the second collection area is acquired.

Obtain biometric information in the first collection area and the second collection area. The incident light is reflected on the surface of the finger or palm (in the first collection area), and the reflected light is received to obtain biometric information (fingerprint, palm print, etc.) in the first collection area. The incident light is reflected on the surface of the finger or palm (in the second collection area), and the reflected light is received to obtain biometric information (fingerprint, palm print, etc.) in the second collection area. Optionally, the reflected light reaches the collection unit, and the collection unit forms a biometric image (image of fingerprint, palm print, etc.) after receiving the reflected light. According to the biometric image, it is converted into electrical signal data and biometric information is obtained.

It should be noted that the above is only an optional embodiment of the present invention. The biometric feature collection method according to the embodiment of the present invention is not limited to the identification of fingerprints or palm prints. The biometric feature collection method according to the embodiment of the present invention can also be applied to the collection of various texture features, especially the collection of identity-recognizable texture features such as lip lines and tongue lines. The method for collecting biometrics according to the embodiments of the present invention is not limited to collecting human information, and can also be used for collecting biometrics of various animals, plants, etc., for example, collecting nose lines and veins of leaves of cats or dogs.

It should be noted that the above is only an optional embodiment of the present invention. In the method for collecting biometrics according to the embodiments of the present invention, when collecting biometrics, a plurality of collecting areas may be formed, but not limited to two.

In a preferred embodiment of the present invention, when collecting biometric information, a first collecting area and a second collecting area for collecting biometrics are formed at the same time. Optionally, multiple (greater than or equal to three) collection areas for collecting biometrics are formed simultaneously.

In a preferred embodiment of the present invention, when collecting biometric information, a bright light source is lit to generate a first light spot and a second light spot respectively to form a first collection area and a second collection area. The brightness values of the first light spot and the second light spot are adjusted to be lower than or equal to the preset brightness value.

At this brightness, the center of the acquired biometric image is not saturated (because the brightness of the point light source is too high, a bright spot will not be formed in the center of the image, and the biometric information in the center of the image will be lost). Optionally, the brightness values of the first light spot and the second light spot are adjusted to be the same.

In a preferred embodiment of the present invention, any two collection areas in the multiple collection areas for collecting biometric information are discontinuous and independent of each other, and there is no overlapping area.

In a preferred embodiment of the present invention, a plurality of collection areas for collecting biometric information are distributed in an array to obtain biometric information (fingerprints, palm prints, etc.) at different positions.

In a preferred embodiment of the present invention, after acquiring the biometric images of the multiple acquisition regions, image processing is performed on the biometric images. Optionally, image restoration is performed on the acquired biometric image (based on the principle of light spot collection, the light spot collection method will enlarge the image acquisition range before imaging, and perform restoration processing on the enlarged image).

FIG. 6 shows a schematic diagram of biometric acquisition according to an embodiment of the present invention. As shown in FIG. 6 , according to the biological feature collection method according to the embodiment of the present invention, a plurality of point light sources distributed in an array are arranged to form a plurality of collection areas for collecting biological features. The arrangement of the multiple point light sources is shown in Figure 6(a), the black dot in the center represents the point light source, and the collection range of the corresponding multiple collection areas is shown by the dotted line in the figure. Based on the optical path principle of light point collection, the point light source will enlarge the collection range and then image (for example, image after magnifying twice), and the collected biometric image is shown in Figure 6(b). Optionally, after the biometric image is collected, a restoration process is performed on the collected image (for example, reduction by a factor of 2).

It should be noted that the above is only a schematic collection diagram of an optional embodiment of the present invention. According to the method for collecting biological features of the embodiments of the present invention, the number, size, distribution, etc. of the collecting areas can be reasonably set according to actual needs.

FIG. 7 shows a schematic diagram of a device for collecting biological features according to an embodiment of the present invention. As shown in FIG. 7 , the biological feature collection device 20 according to the embodiment of the present invention includes a light source 201 and a collection unit 202 . The light source 201 is arranged in the screen 101, for example, in an optical screen. The light source 201 emits incident light. The incident light is reflected on the surface of the finger or palm (in the collection area). The collection unit 202 is disposed on the path of the reflected light, and is used for receiving the reflected light to obtain biometric information (fingerprints, palm prints, etc.) in the collection area.

In an optional embodiment of the present invention, the light source 201 includes, for example, a first point light source and a second point light source. The collection unit 202 is arranged below the light source 201 (screen 101).

When collecting biometric information, the first point light source is lit to form a first collecting area for collecting biometrics. The first point light source emits incident light, for example, forming a first collection area on the outer surface of the screen 101 (where fingers or palms come into contact). There is biometric information (fingerprint, palm print, etc.) in the first collection area. The incident light is reflected on the surface of the finger or palm (in the first collection area). Optionally, only the first point light source may be turned on when the screen 101 is in a black screen state; the first point light source may also be turned on when the screen 101 is in a bright screen state.

When collecting biometric information, the second point light source is lit to form a second collecting area for collecting biometrics. The second point light source emits incident light, for example, forming a second collection area on the outer surface of the screen 101 (where fingers or palms come into contact). There is biometric information (fingerprints, palm prints, etc.) in the second collection area. The incident light is reflected on the surface of the finger or palm (in the second collection area). Optionally, only the second point light source may be turned on when the screen 101 is in a black screen state; the second point light source may also be turned on when the screen 101 is in a bright screen state.

The incident light is reflected on the surface of the finger or palm (in the first collection area), and the collection unit 202 receives the reflected light to acquire biometric information (fingerprint, palm print, etc.) in the first collection area. The incident light is reflected on the surface of the finger or palm (in the second collection area), and the collection unit 202 receives the reflected light to acquire biometric information (fingerprint, palm print, etc.) in the second collection area. Optionally, the collection unit 202 forms a biometric image (an image of a fingerprint, a palm print, etc.) after receiving the reflected light. According to the biometric image, it is converted into electrical signal data and biometric information is obtained.

It should be noted that the above is only an optional embodiment of the present invention. The light source 201 according to the embodiment of the present invention includes a plurality of point light sources for forming a plurality of collection areas. Point light sources are not limited to two.

In a preferred embodiment of the present invention, when collecting biometric information, the first point light source and the second point light source are simultaneously lit to simultaneously form a first collection area and a second collection area for collecting biometrics. Specifically, the simultaneous lighting of multiple point light sources is achieved by using software and/or hardware. Optionally, the light source 201 includes at least three point light sources. When the biometric information is collected, the point light sources included in the light source 201 are turned on at the same time.

In a preferred embodiment of the present invention, when collecting biometric information, the light source 201 is turned on, and each point light source is adjusted to the same brightness value. At this brightness, the center of the acquired biometric image is not saturated (because the brightness of the point light source is too high, a bright spot will not be formed in the center of the image, and the biometric information in the center of the image will be lost).

In a preferred embodiment of the present invention, the biological feature collection device 20 further includes a brightness control unit. The brightness control unit is connected to the light source 201, and is used for adjusting or controlling the brightness of the light source 201, for example, controlling the brightness value of each point light source in the light source 201 to be lower than a preset threshold. When the brightness of the point light source is lower than the preset threshold, the center of the collected biometric image is not saturated (the bright spot will not be formed in the center of the image because the brightness of the point light source is too high, and the biometric information in the center of the image will be lost) .

In a preferred embodiment of the present invention, the multiple point light sources of the light source 201 are arranged at intervals, so that the collection areas illuminated by each point light source are independent of each other, and there is no overlapping area.

In a preferred embodiment of the present invention, a plurality of point light sources of the light source 201 are distributed in an array to obtain biometric information (fingerprints, palm prints, etc.) at different positions.

In a preferred embodiment of the present invention, the biometric acquisition device 20 further includes an image processing unit. The image processing unit is connected with the acquisition unit 202, and is used for processing biometric images (images of fingerprints, palm prints, etc.) to obtain biometric information. The image processing unit is, for example, used for image restoration processing (based on the principle of light spot collection, the image acquisition range will be enlarged and then imaged, and the enlarged image will be restored). Optionally, the acquisition unit 202 forms a biometric image after receiving the reflected light. The image processing unit is connected with the acquisition unit 202 to receive the biometric image, process the biometric image, convert it into electrical signal data, and obtain biometric information.

FIG. 8 shows a schematic diagram of an electronic device according to an embodiment of the present invention. As shown in FIG. 8 , according to yet another aspect of the present invention, an electronic device 10 is provided, including the above-mentioned biometric feature collection device 20 . The biometric acquisition device 20 is, for example, disposed under the optical screen of the electronic device 10 .

In one embodiment of the present invention, a display panel is provided, including the aforementioned biometric feature acquisition device. It should be noted that, in this document, relational terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any relationship between these entities or operations. any such actual relationship or sequence exists. Moreover, the terms "comprising", "comprising" or any other variation thereof are intended to encompass a non-exclusive inclusion such that a process, method, article or device that includes a list of elements includes not only those elements, but also includes not explicitly listed or other elements inherent to such a process, method, article or apparatus. Without further limitation, an element qualified by the phrase "comprising a..." does not preclude the presence of additional identical elements in a process, method, article or apparatus that includes the element.

Embodiments in accordance with the present invention are described above, but these embodiments do not exhaust all the details and do not limit the invention to only the specific embodiments described. Obviously, many modifications and variations are possible in light of the above description. This specification selects and specifically describes these embodiments in order to better explain the principle and practical application of the present invention, so that those skilled in the art can make good use of the present invention and modifications based on the present invention. The present invention is to be limited only by the claims and their full scope and equivalents.

Claims (11)

1. a biological feature collection method, is characterized in that, comprises the following steps: forming a first collection area for collecting biometrics; forming a second collection area for collecting biometrics; and acquiring biometric information in the first collection area and the second collection area, Wherein, the positions of the second collection area and the first collection area are different. 2 . The method for collecting biological features according to claim 1 , wherein a first light spot is generated to form the first collection area; a second light spot is generated to form the second collection area; and the first light spot is adjusted. 3 . and the brightness value of the second light spot so that both are lower than or equal to the preset brightness value. 3 . The method for collecting biological features according to claim 2 , wherein the brightness values of the first light spot and the second light spot are adjusted so that the brightness value of the first light spot and the first light spot The brightness values of the two light spots are the same. 4 . The method for collecting biological features according to claim 1 , wherein the first collecting area and the second collecting area are formed at the same time. 5 . 5 . The method for collecting biological features according to claim 1 , wherein the first collecting area and the second collecting area are discontinuous. 6 . 6. A device for collecting biological features, comprising: a light source that emits incident light to form a first collection area and a second collection area for collecting biometrics; and an acquisition unit, located on the reflection path of the incident light, and used for acquiring biometric images in the first acquisition area and the second acquisition area, Wherein, the positions of the second collection area and the first collection area are different. 7. The device for collecting biological features according to claim 6, wherein the device for collecting biological features further comprises: A brightness control unit, connected with the light source, is used to adjust or control the brightness value of the light source. 8. The device for collecting biological features according to claim 6, wherein the device for collecting biological features further comprises: an image processing unit, connected with the acquisition unit to receive the biometric image, and process the biometric image to obtain biometric information. 9 . The biological feature collection device according to claim 6 , wherein the light source comprises a plurality of point light sources, and the plurality of point light sources are used to form a plurality of collection areas for collecting biological features, 10 . Wherein, the plurality of point light sources are distributed in an array. 10. A display panel, characterized in that, the display panel comprises the biometric feature acquisition device according to any one of claims 6-9. 11. An electronic device, characterized in that the electronic device comprises the biometric acquisition device according to any one of claims 6-9, Wherein, the electronic device is a full screen or a non-face screen.

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