Method, apparatus and device for fingerprint identification

Abstract

The present disclosure provides a method, device and equipment for fingerprint identification, wherein the method comprises: after obtaining a first light sensing value output by a red light sensing unit and a second light sensing value output by a non-red light sensing unit in a touch screen, determining whether the collected fingerprint is a live fingerprint based on the first light sensing value or a ratio of the second light sensing value to the first light sensing value according to whether the first light sensing value is greater than a first threshold. Thus, the fingerprint identification is performed by the first light sensing value output by the red light sensing unit or the ratio of the second light sensing value to the first light sensing value output by the non-red light sensing unit, so as to ensure the accuracy of the fingerprint identification, reduce the complexity of the fingerprint identification, and improve the efficiency of the fingerprint identification.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the field of biometric identification, and in particular, to a fingerprint identification method, device and equipment. BACKGROUND

[0002] As an important identity verification technology, fingerprint identification is widely used in information security, security, attendance and other fields.

[0003] In the related art, the identity is determined by comparing the collected fingerprint with the pre-stored fingerprint, but this method ignores the authenticity of the carrier of the fingerprint, resulting in low accuracy of fingerprint identification. SUMMARY

[0004] The present disclosure aims to at least partially solve one of the technical problems in the related art.

[0005] To this end, the first object of the present disclosure is to provide a fingerprint identification method to determine whether the collected fingerprint is a live fingerprint according to whether the first light value output by the red light sensing unit in the touch screen is greater than the first threshold value, and to select one of the first light value or the ratio of the second light value output by the non-red light sensing unit to the first light value. Thus, the function of distinguishing live fingerprints is achieved, and the accuracy of fingerprint identification can be improved.

[0006] The second object of the present disclosure is to provide a fingerprint identification device.

[0007] The third object of the present disclosure is to provide an equipment.

[0008] To achieve the above-mentioned objects, the first aspect of the present disclosure provides a fingerprint identification method, comprising: obtaining a first light value output by a red light sensing unit in a touch screen and a second light value output by a non-red light sensing unit; determining whether the collected fingerprint is a live fingerprint according to whether the first light value is greater than a first threshold value, and selecting one of the first light value or the ratio of the second light value to the first light value.

[0009] The fingerprint identification method of the present disclosure, by obtaining a first light value output by a red light sensing unit in a touch screen and a second light value output by a non-red light sensing unit; determining whether the collected fingerprint is a live fingerprint according to whether the first light value is greater than a first threshold value, and selecting one of the first light value or the ratio of the second light value to the first light value. Thus, the authenticity of the fingerprint carrier is distinguished, and the accuracy of fingerprint identification can be improved.

[0010] To achieve the above object, the second aspect of the present disclosure provides a device for fingerprint identification, comprising: an acquisition module, configured to acquire a first light value output by a red light sensing unit in a touch screen and a second light value output by a non-red light sensing unit; and a determination module, configured to determine whether a collected fingerprint is a live fingerprint based on one of the first light value or a ratio of the second light value to the first light value according to whether the first light value is greater than a first threshold.

[0011] To achieve the above object, the third aspect of the present disclosure provides a device, comprising: the device for fingerprint identification according to the above aspect.

[0012] The additional aspects and advantages of the present disclosure will be partially given in the following description, partially become obvious from the following description, or be understood by the practice of the present disclosure. BRIEF DESCRIPTION OF DRAWINGS

[0013] The above described and / or additional aspects and advantages of the present disclosure will become apparent and easily understood from the following description of the embodiments, taken in conjunction with the accompanying drawings, in which:

[0014] Figure 1 A flowchart of a method for fingerprint identification provided by an embodiment of the present disclosure;

[0015] Figure 2 A schematic diagram of an arrangement of light sensing units in a touch screen provided by an embodiment of the present disclosure;

[0016] Figure 3 A flowchart of another method for fingerprint identification provided by an embodiment of the present disclosure;

[0017] Figure 4 A flowchart of another method for fingerprint identification provided by an embodiment of the present disclosure;

[0018] Figure 5 A structural schematic diagram of a device for fingerprint identification provided by an embodiment of the present disclosure;

[0019] Figure 6 A structural schematic diagram of a device for fingerprint identification according to an exemplary embodiment. DETAILED DESCRIPTION

[0020] The embodiments of the present disclosure are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the accompanying drawings are exemplary and are intended to explain the present disclosure, and cannot be understood as a limitation of the present disclosure.

[0021] The method, device and equipment for fingerprint identification of the embodiments of the present disclosure are described below with reference to the accompanying drawings.

[0022] Figure 1 A flowchart of a method for fingerprint identification provided by an embodiment of the present disclosure.

[0023] As shown in Figure 1 The method for fingerprint identification can include the following steps:

[0024] In step 101, a first light sensing value output by a red light sensing unit in the touch screen and a second light sensing value output by a non-red light sensing unit are acquired.

[0025] In view of the fact that the fingerprint used for unlocking has the same texture as the reserved fingerprint and the carrier of the fingerprint used for unlocking is a non-living body, the present disclosure considers that the color of the non-living body fingerprint is different from that of the living body fingerprint, and can identify whether the fingerprint used for unlocking is a living body fingerprint based on the physical optical principle, thereby improving the efficiency of fingerprint identification while ensuring the accuracy of fingerprint identification.

[0026] In the present disclosure, the living body fingerprint is affected by the blood in the living body, and the living body fingerprint appears red. Therefore, the living body fingerprint reflects red light strongly and reflects non-red light weakly. When the fingerprint is unlocked, the system can control an organic light emitting diode (OLED) in the touch screen to emit three-color light (RGB). When the three-color light is irradiated onto the fingerprint used for unlocking, the fingerprint reflects red light and non-red light with different intensities. Then, the reflected red light excites the red light sensing unit in the touch screen to generate a photoelectric effect and output a first light sensing value. The reflected non-red light excites the non-red light sensing unit in the touch screen to generate a photoelectric effect and output a second light sensing value. Further, whether the unlocking fingerprint is a living body fingerprint can be determined based on the first light sensing value output by the red light sensing unit in the touch screen and the second light sensing value output by the non-red light sensing unit. In addition, when the RGB light emitted by the OLED is irradiated onto the fingerprint used for unlocking, the reflected light of the concave-convex part of the fingerprint is different. Therefore, the collected fingerprint image can be determined according to the collected non-red reflected light.

[0027] The first light sensing value output by the red light sensing unit can be used to indicate the intensity of the red light reflected by the fingerprint, and the second light sensing value output by the non-red light sensing unit can be used to indicate the intensity of the non-red light reflected by the fingerprint. The light sensing value can be any information that can indicate the intensity of light, such as the current of the light sensing unit, and the present disclosure does not limit this.

[0028] Furthermore, since the OLED in the touchscreen emits RGB light, and the duration of the photoelectric effect of the red light-excited photosensitive unit is longer than that of the green light-excited photosensitive unit, and the duration of the photoelectric effect of the green light-excited photosensitive unit is longer than that of the blue light-excited photosensitive unit, in order to improve the efficiency of determining the second photosensitivity value, the non-red photosensitive unit is preferably a green photosensitive unit or a white photosensitive unit, and secondarily a blue photosensitive unit; this disclosure does not impose any limitations on this.

[0029] In this disclosure, the photosensitive units within the touchscreen may include multiple red photosensitive units and multiple non-red photosensitive units of any type. For example, the photosensitive units within the touchscreen may include multiple red photosensitive units and multiple white photosensitive units, or the photosensitive units within the touchscreen may include multiple red photosensitive units and multiple green photosensitive units. Furthermore, the red and non-red photosensitive units within the touchscreen may be arranged at arbitrary intervals.

[0030] Optionally, every two red photosensitive units within the touchscreen are spaced apart by a first number of non-red photosensitive units in a first direction and by a second number of non-red photosensitive units in a second direction, wherein the first number and the second number may be the same or different. The first direction may be horizontal or vertical, or it may be diagonal; this disclosure does not limit this.

[0031] For example, such as Figure 2 As shown, Figure 2 The solid black square represents a light-emitting unit, the solid white square represents a red light-emitting unit, the solid white square represents a green light-emitting unit, and the solid gray square represents a blue light-emitting unit. Figure 2 The medium circle represents the photosensitive unit, the black solid circle represents the red photosensitive unit, and the white solid circle represents the green photosensitive unit. Figure 2 In Figure a, on the main diagonal of the touchscreen, red photosensitive units are distributed with one green photosensitive unit and two light-emitting units spaced apart. Figure 2 In b, red photosensitive units are distributed with a green photosensitive unit spaced one spaced on each of the horizontal and vertical central axes of the touchscreen. Figure 2 In diagram c, on the main diagonal of the touchscreen, red photosensitive units are distributed with one green photosensitive unit and two light-emitting units spaced apart. On the diagonal of each red photosensitive unit, red photosensitive units are also distributed with one green photosensitive unit and two light-emitting units spaced apart. The light-emitting units can also be called pixel units.

[0032] It should be noted that, Figure 2 The distribution of red photosensitive units, non-red photosensitive units, and light-emitting units shown is for illustrative purposes only and is not intended to limit this disclosure.

[0033] Optionally, the light emitting units in the touch screen can be arranged in any manner, such as in the manner of RGGB, or RGBG, or other manners. The present disclosure does not limit this.

[0034] In step 102, according to whether the first light value is greater than the first threshold value, one of the first light value or the ratio of the second light value to the first light value is selected to determine whether the collected fingerprint is a live fingerprint.

[0035] In the present disclosure, the first light value can be compared with the first threshold value. When the first light value is greater than or equal to the first threshold value, it is determined that the collected fingerprint is a live fingerprint. When the first light value is less than the first threshold value, the ratio of the second light value to the first light value is further used to determine whether the collected fingerprint is a live fingerprint. In this way, the accuracy of fingerprint identification is improved.

[0036] In the present disclosure, after the first light value output by the red light sensing unit in the touch screen and the second light value output by the non-red light sensing unit are obtained, one of the first light value or the ratio of the second light value to the first light value is selected to determine whether the collected fingerprint is a live fingerprint according to whether the first light value is greater than the first threshold value. In this way, the first light value output by the red light sensing unit or the ratio of the second light value output by the non-red light sensing unit to the first light value is used for fingerprint identification, thereby reducing the complexity of fingerprint identification while ensuring the accuracy of fingerprint identification and improving the efficiency of fingerprint identification.

[0037] Figure 3 Another flowchart of a method for fingerprint identification provided by an embodiment of the present disclosure is shown.

[0038] As shown in Figure 3 The method for fingerprint identification can include the following steps:

[0039] In step 301, the first light value output by the red light sensing unit in the touch screen and the second light value output by the non-red light sensing unit are obtained.

[0040] In the present disclosure, the specific implementation process of step 301 can be referred to the detailed description of any embodiment of the present disclosure, which will not be repeated here.

[0041] In step 302, when the first light value is greater than or equal to the first threshold value, it is determined that the collected fingerprint is a live fingerprint.

[0042] In the present disclosure, since the live fingerprint is affected by the live blood, the live fingerprint appears red. When the light emitted by the light-emitting unit in the touch screen irradiates on the live fingerprint, the live fingerprint can reflect red light back. As for the non-live fingerprint which is not red, when the light emitted by the light-emitting unit in the touch screen irradiates on the non-live finger which is not red, the non-live fingerprint cannot reflect red light back. Thus, when the first light-sensing value output by the red light-sensing unit is greater than or equal to the first threshold value, it indicates that the red light reflected by the collected fingerprint is relatively strong, and thus it can be determined that the collected fingerprint is a live fingerprint.

[0043] Optionally, when the first light-sensing value output by the red light-sensing unit is less than the first threshold value, it indicates that the red light reflected by the collected fingerprint is relatively weak, and thus it can be determined that the collected fingerprint is a non-live fingerprint.

[0044] Optionally, when the first light-sensing value output by the red light-sensing unit is greater than the third threshold value, it indicates that the intensity of the red light reflected by the collected fingerprint exceeds the possible intensity range of the red light reflected by the live fingerprint, and thus it can be determined that the collected fingerprint is a non-live fingerprint. The third threshold value is greater than the first threshold value.

[0045] Optionally, since the live fingerprint is red, the intensity of the red light reflected by the live fingerprint is different from the intensity of the green light reflected by the live fingerprint. In order to improve the accuracy of determining the live fingerprint, when the first light-sensing value is less than the first threshold value, the intensity of the red light reflected by the collected fingerprint and the intensity of the green light reflected by the collected fingerprint can be comprehensively considered to determine whether the collected fingerprint is a live fingerprint. For example, according to the ratio of the second light-sensing value to the first light-sensing value, it can be determined whether the collected fingerprint is a live fingerprint.

[0046] Optionally, when the first light-sensing value is less than the first threshold value, and the ratio of the second light-sensing value to the first light-sensing value is greater than or equal to the second threshold value, it indicates that the red light reflected by the collected fingerprint is relatively weak, and thus it can be determined that the collected fingerprint is a non-live fingerprint.

[0047] Optionally, when the first light-sensing value is less than the first threshold value, and the ratio of the second light-sensing value to the first light-sensing value is less than the second threshold value, it indicates that the red light reflected is relatively strong, and thus it can be determined that the collected fingerprint is a live fingerprint.

[0048] Optionally, when the first light-sensing value is greater than or equal to the first threshold value, and the ratio of the second light-sensing value to the first light-sensing value is less than or equal to the fourth threshold value, it indicates that the intensity of the red light reflected by the collected fingerprint exceeds the possible intensity range of the red light reflected by the live fingerprint, and thus it can be determined that the collected fingerprint is a non-live fingerprint.

[0049] Optionally, when the first light-sensing value is greater than or equal to the first threshold value, and the ratio of the second light-sensing value to the first light-sensing value is greater than the fourth threshold value, it can be determined that the collected fingerprint is a live fingerprint.

[0050] In the present disclosure, after obtaining the first light sensing value output by the red light sensing unit in the touch screen and the second light sensing value output by the non-red light sensing unit, in the case that the first light sensing value is greater than or equal to the first threshold value, it is determined that the collected fingerprint is a live fingerprint. Thus, the fingerprint recognition is performed by the first light sensing value output by the red light sensing unit, so as to reduce the complexity of the fingerprint recognition and improve the efficiency of the fingerprint recognition while ensuring the accuracy of the fingerprint recognition.

[0051] Figure 4 Another flowchart of a method for fingerprint recognition provided by an embodiment of the present disclosure.

[0052] As shown in Figure 4 the method for fingerprint recognition can include the following steps:

[0053] Step 401, when the non-red pixel unit in the touch screen is in a light-emitting state, control the red pixel unit in the touch screen to be in a light-sensing state.

[0054] In the present disclosure, each pixel unit in the touch screen can not only serve as a light-emitting unit but also serve as a light-sensing unit, so as to improve the versatility of the fingerprint recognition method. For example, when a forward voltage is applied to a pixel unit, the pixel unit can be controlled to serve as a light-emitting unit. When a reverse voltage is applied to the pixel unit, the pixel unit can be controlled to serve as a light-sensing unit.

[0055] In the present disclosure, when the fingerprint is unlocked, the non-red pixel unit in the touch screen can be controlled to be in a light-emitting state, and the red pixel unit in the touch screen can be controlled to be in a light-sensing state. Thus, the red pixel unit can serve as a non-red light-sensing unit, and at this time, the reflected light of the non-red color excites the red pixel unit in the touch screen to generate a photoelectric effect and output a second light sensing value.

[0056] Step 402, when the red pixel unit in the touch screen is in a light-emitting state, control the non-red pixel unit in the touch screen to be in a light-sensing state.

[0057] In the present disclosure, when the red pixel unit in the touch screen is in a light-emitting state, the non-red pixel unit in the touch screen can be controlled to be in a light-sensing state. Thus, the non-red pixel unit can serve as a red light-sensing unit, and at this time, the reflected light of the red color excites the non-red pixel unit in the touch screen to generate a photoelectric effect and output a first light sensing value.

[0058] Step 403, obtain the first light sensing value output by the red light sensing unit in the touch screen and the second light sensing value output by the non-red light sensing unit.

[0059] Step 404, according to whether the first light sensing value is greater than the first threshold value, select one of the first light sensing value or the ratio of the second light sensing value to the first light sensing value to determine whether the collected fingerprint is a live fingerprint.

[0060] The specific implementation process of steps 403-404 in the present disclosure can be referred to the detailed description of any embodiment of the present disclosure, which will not be repeated here.

[0061] In the present disclosure, when the non-red pixel units in the touch screen are in the light-emitting state, the red pixel units in the touch screen are controlled to be in the light-sensing state, and when the red pixel units in the touch screen are in the light-emitting state, the non-red pixel units in the touch screen are controlled to be in the light-sensing state. Then, the first light-sensing value output by the red light-sensing unit and the second light-sensing value output by the non-red light-sensing unit in the touch screen can be obtained, and whether the collected fingerprint is a live fingerprint is determined based on one of the first light-sensing value or the ratio of the second light-sensing value to the first light-sensing value according to whether the first light-sensing value is greater than a first threshold. Thus, the first light-sensing value output by the red light-sensing unit or the ratio of the second light-sensing value output by the non-red light-sensing unit to the first light-sensing value is used for fingerprint identification, so as to ensure the accuracy of fingerprint identification while reducing the complexity of fingerprint identification and improving the efficiency of fingerprint identification.

[0062] To achieve the above-mentioned embodiments, the present disclosure further provides a device for fingerprint identification.

[0063] Figure 5 A structural schematic diagram of a device for fingerprint identification provided by an embodiment of the present disclosure is provided.

[0064] As shown in Figure 5 The device for fingerprint identification 500 includes an acquisition module 510 and a determination module 520.

[0065] The acquisition module 510 is configured to acquire a first light-sensing value output by a red light-sensing unit and a second light-sensing value output by a non-red light-sensing unit in a touch screen.

[0066] The determination module 520 is configured to determine whether a collected fingerprint is a live fingerprint based on one of the first light-sensing value or the ratio of the second light-sensing value to the first light-sensing value according to whether the first light-sensing value is greater than a first threshold.

[0067] As a possible implementation manner of an embodiment of the present disclosure, the determination module 520 is configured to:

[0068] determine that the collected fingerprint is a live fingerprint when the first light-sensing value is greater than or equal to the first threshold; or

[0069] determine whether the collected fingerprint is a live fingerprint according to the ratio of the second light-sensing value to the first light-sensing value when the first light-sensing value is less than the first threshold.

[0070] As a possible implementation manner of an embodiment of the present disclosure, the determination module 520 is configured to:

[0071] In a case where the ratio of the second light sensing value to the first light sensing value is greater than or equal to the second threshold value, it is determined that the collected fingerprint is a non-living body fingerprint; or

[0072] In a case where the ratio of the second light sensing value to the first light sensing value is less than the second threshold value, it is determined that the collected fingerprint is a living body fingerprint.

[0073] As a possible implementation manner of the embodiment of the present disclosure, the non-red light sensing unit is a green light sensing unit or a white light sensing unit.

[0074] As a possible implementation manner of the embodiment of the present disclosure, every two red light sensing units in the touch screen are spaced apart by a first number of non-red light sensing units in a first direction and spaced apart by a second number of non-red light sensing units in a second direction, wherein the first number and the second number are the same or different.

[0075] As a possible implementation manner of the embodiment of the present disclosure, the method further comprises a control module configured to:

[0076] When the non-red pixel unit in the touch screen is in a light emitting state, the red pixel unit in the touch screen is controlled to be in a light sensing state;

[0077] When the red pixel unit in the touch screen is in a light emitting state, the non-red pixel unit in the touch screen is controlled to be in a light sensing state.

[0078] In the present disclosure, after the first light sensing value output by the red light sensing unit in the touch screen and the second light sensing value output by the non-red light sensing unit are obtained, whether the collected fingerprint is a living body fingerprint can be determined according to whether the first light sensing value is greater than a first threshold value, and one of the first light sensing value or the ratio of the second light sensing value to the first light sensing value is selected. Thus, the fingerprint recognition is performed by the first light sensing value output by the red light sensing unit or the ratio of the second light sensing value to the first light sensing value output by the non-red light sensing unit, so as to reduce the complexity of the fingerprint recognition and improve the efficiency of the fingerprint recognition while ensuring the accuracy of the fingerprint recognition.

[0079] It should be noted that the foregoing explanation and description of the method embodiment for fingerprint recognition also apply to the device for fingerprint recognition of the embodiment, which will not be described here again.

[0080] Based on the method and device for fingerprint recognition provided in the foregoing embodiments, the present disclosure can further provide a device. The device can be a portable user device such as a mobile phone, a palm computer, etc., or can be another device having a fingerprint input function, and the present disclosure does not limit this.

[0081] Figure 6 A structural schematic diagram of a device provided in the embodiment of the present disclosure is shown in FIG. 1. As shown in FIG. 1, the device comprises a touch screen 100 and a processor 200. Figure 6The device 600 includes a fingerprint identification device 610.

[0082] The device of the embodiments of the present disclosure, after acquiring the first light sensing value output by the red light sensing unit in the touch screen and the second light sensing value output by the non-red light sensing unit, can determine whether the collected fingerprint is a live fingerprint based on one of the first light sensing value or the ratio of the second light sensing value to the first light sensing value according to whether the first light sensing value is greater than a first threshold. Thus, the fingerprint identification is performed through the first light sensing value output by the red light sensing unit or the ratio of the second light sensing value output by the non-red light sensing unit to the first light sensing value, thereby ensuring the accuracy of the fingerprint identification while reducing the complexity of the fingerprint identification and improving the efficiency of the fingerprint identification.

[0083] In the description of the present disclosure, the terms "first", "second" are only used for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present disclosure, the meaning of "a plurality of" is at least two, for example, two, three, etc., unless otherwise specifically limited.

[0084] Although the embodiments of the present disclosure have been shown and described above, it can be understood that the above-mentioned embodiments are exemplary and cannot be understood as limiting the present disclosure, and those skilled in the art can make changes, modifications, replacements and variations to the above-mentioned embodiments within the scope of the present disclosure.

Claims

1. A fingerprint recognition method, characterized in that, include: Acquire the first photosensitive value output by the red photosensitive unit and the second photosensitive value output by the non-red photosensitive unit in the touch screen; Based on whether the first photosensitive value is greater than the first threshold, select one of the first photosensitive value or the ratio of the second photosensitive value to the first photosensitive value to determine whether the collected fingerprint is a live fingerprint; Each pixel unit within the touchscreen can function as both a light-emitting unit and a light-sensing unit. Before acquiring the first photosensitive value output by the red photosensitive unit and the second photosensitive value output by the non-red photosensitive unit within the touchscreen, the method further includes: When the non-red pixel units in the touch screen are in an illuminated state, the red pixel units in the touch screen are controlled to be in a photosensitive state. When the red pixel unit in the touch screen is in an illuminated state, the non-red pixel unit in the touch screen is controlled to be in a photosensitive state.

2. The method as described in claim 1, characterized in that, The step of determining whether the collected fingerprint is a live fingerprint based on whether the first photosensitivity value is greater than a first threshold, selecting either the first photosensitivity value or the ratio of the second photosensitivity value to the first photosensitivity value, includes: If the first photosensitivity value is greater than or equal to a first threshold, the collected fingerprint is determined to be a live fingerprint; or, If the first photosensitive value is less than the first threshold, the fingerprint is determined to be a live fingerprint based on the ratio of the second photosensitive value to the first photosensitive value.

3. The method as described in claim 2, characterized in that, The step of determining whether the collected fingerprint is a live fingerprint based on the ratio of the second photosensitivity value to the first photosensitivity value includes: If the ratio of the second photosensitivity value to the first photosensitivity value is greater than or equal to a second threshold, the collected fingerprint is determined to be a non-living fingerprint; or, If the ratio of the second photosensitive value to the first photosensitive value is less than the second threshold, the collected fingerprint is determined to be a live fingerprint.

4. The method according to any one of claims 1-3, characterized in that, The non-red photosensitive unit is a green photosensitive unit or a white photosensitive unit.

5. The method as described in claim 4, characterized in that, Every two red photosensitive units in the touchscreen are spaced apart by a first number of non-red photosensitive units in a first direction and by a second number of non-red photosensitive units in a second direction, wherein the first number and the second number may be the same or different.

6. A fingerprint recognition device, characterized in that, include: The acquisition module is used to acquire the first photosensitive value output by the red photosensitive unit and the second photosensitive value output by the non-red photosensitive unit in the touch screen; The determination module is used to determine whether the collected fingerprint is a live fingerprint by selecting one of the first photosensitive value or the ratio of the second photosensitive value to the first photosensitive value based on whether the first photosensitive value is greater than a first threshold. Each pixel unit within the touchscreen can function as both a light-emitting unit and a light-sensing unit. The device also includes a control module for: When the non-red pixel units in the touchscreen are in an illuminated state, the red pixel units in the touchscreen are controlled to be in a photosensitive state; when the red pixel units in the touchscreen are in an illuminated state, the non-red pixel units in the touchscreen are controlled to be in a photosensitive state.

7. The apparatus as claimed in claim 6, characterized in that, The determining module is used for: If the first photosensitivity value is greater than or equal to a first threshold, the collected fingerprint is determined to be a live fingerprint; or, If the first photosensitive value is less than the first threshold, the fingerprint is determined to be a live fingerprint based on the ratio of the second photosensitive value to the first photosensitive value.

8. The apparatus as claimed in claim 7, characterized in that, The determining module is used for: If the ratio of the second photosensitivity value to the first photosensitivity value is greater than or equal to a second threshold, the collected fingerprint is determined to be a non-living fingerprint; or, If the ratio of the second photosensitive value to the first photosensitive value is less than the second threshold, the collected fingerprint is determined to be a live fingerprint.

9. The apparatus according to any one of claims 6-8, characterized in that, The non-red photosensitive unit is a green photosensitive unit or a white photosensitive unit.

10. The apparatus as claimed in claim 9, characterized in that, Every two red photosensitive units in the touchscreen are spaced apart by a first number of non-red photosensitive units in a first direction and by a second number of non-red photosensitive units in a second direction, wherein the first number and the second number may be the same or different.

11. A device, characterized in that, The device includes the fingerprint recognition apparatus as described in any one of claims 6-10.

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