An electronic device and an information processing method

Abstract

This invention discloses an electronic device and an information processing method. The electronic device includes a display panel and a fingerprint recognition module disposed on the display surface of the display panel. The fingerprint recognition module includes an infrared emitter, an infrared receiver, and an optical film. The optical film reflects infrared light emitted from the infrared emitter towards a fingerprint recognition area on the surface of the fingerprint recognition module, and reflects infrared light reflected back from the fingerprint recognition area towards the infrared receiver. The optical film also transmits visible light emitted from the display panel towards the optical film. This electronic device has high fingerprint recognition accuracy and is suitable for the trend of full-screen electronic devices.

Description

Technical Field

[0001] This invention relates to the field of fingerprint recognition technology, and more particularly to an electronic device and an information processing method. Background Technology

[0002] With the development of science and technology, fingerprint recognition technology is increasingly being applied to electronic devices to improve their security and privacy. Current fingerprint recognition modules in electronic devices typically use capacitive or radio frequency (RF) sensors. However, both of these methods are highly susceptible to the effects of oil or sweat, resulting in room for improvement in fingerprint recognition accuracy. Furthermore, fingerprint recognition modules using these two methods are usually located on the bezel of the electronic device, requiring a certain amount of screen space, which is not suitable for the trend towards full-screen electronic devices. Summary of the Invention

[0003] To address the aforementioned technical problems, embodiments of the present invention provide an electronic device to improve the fingerprint recognition accuracy of the electronic device, and are applicable to the development trend of full-screen electronic devices.

[0004] To address the above problems, embodiments of the present invention provide the following technical solutions:

[0005] An electronic device includes: a display panel and a fingerprint recognition module disposed on the display surface of the display panel; wherein the fingerprint recognition module includes: an infrared emitter, an infrared receiver, and an optical film;

[0006] The optical film is used to reflect the infrared light emitted from the infrared emitter toward the fingerprint recognition area on the surface of the fingerprint recognition module, and to reflect the infrared light reflected back from the fingerprint recognition area toward the infrared receiver; the optical film is also used to transmit visible light emitted from the display panel toward the optical film.

[0007] Preferably, the infrared emitter, the infrared receiver, and the optical film are disposed inside the housing of the fingerprint recognition module, and the plane where the optical film is located forms a preset angle with the display surface of the display panel, dividing the housing into a first space facing the display panel and a second space away from the display panel;

[0008] Wherein, the preset angle is greater than 0° and less than 180°; the infrared transmitter and the infrared receiver are located in the second space.

[0009] Preferably, the infrared light emitted by the infrared emitter is reflected by the optical film and then directed perpendicularly towards the fingerprint recognition area.

[0010] Preferably, the infrared light emitted by the infrared emitter has a wavelength range of 820nm-1000nm, including the endpoint values.

[0011] Preferably, the attenuation coefficient of the infrared light emitted by the infrared emitter on the side of the fingerprint recognition area away from the display panel is greater than the attenuation coefficient of the infrared light emitted by the infrared emitter on the side of the fingerprint recognition area facing the display panel.

[0012] Preferably, the infrared transmitter includes multiple infrared LEDs arranged in a first preset manner; the infrared receiver includes multiple infrared detectors arranged in a second preset manner.

[0013] Preferably, the electronic device further includes a processor, which is configured to generate an identification image based on the infrared light received by the infrared receiver, and perform fingerprint recognition based on the identification image and a pre-stored comparison image.

[0014] Preferably, the identification image is a fingerprint image generated based on infrared light received by the infrared receiver, and the comparison image is a pre-stored fingerprint image.

[0015] Preferably, the identification image is a fingerprint feature image generated based on infrared light received by the infrared receiver, and the comparison image is a pre-stored fingerprint feature image.

[0016] An information processing method is applied to an electronic device, the electronic device including a display panel and a fingerprint recognition module disposed on the display surface of the display panel; wherein, the fingerprint recognition module includes: an infrared emitter, an infrared receiver, and an optical film;

[0017] The method includes:

[0018] The infrared emitter is controlled to emit infrared light toward the optical film. The optical film reflects the infrared light emitted by the infrared emitter toward the fingerprint recognition area on the surface of the fingerprint recognition module, and reflects the infrared light reflected back from the fingerprint recognition area toward the infrared receiver. At the same time, visible light emitted by the display panel toward the optical film is transmitted.

[0019] The infrared receiver is controlled to receive the infrared light reflected back from the fingerprint recognition area that is directed at it by the optical film;

[0020] Based on the infrared light received by the infrared receiver, an identification image is generated, and fingerprint recognition is performed based on the identification image and a pre-stored comparison image.

[0021] Compared with existing technologies, the above technical solution has the following advantages:

[0022] In the technical solution provided by this invention, the fingerprint recognition module uses infrared light for fingerprint recognition, which is unaffected by oil or sweat, resulting in high fingerprint recognition accuracy. Furthermore, the infrared light is invisible to the human eye and does not affect the display light of the display panel. Moreover, in the technical solution provided by this invention, the fingerprint recognition module is located on the display surface of the display panel, providing a large effective fingerprint recognition area (i.e., the area where fingerprint recognition can be performed), which can be extended to nearly half or more of the display surface of the display panel, without affecting the viewing of the displayed image. It requires no additional openings and does not occupy screen space, making it suitable for the trend of full-screen electronic devices. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the structure of an electronic device provided in one embodiment of the present invention;

[0025] Figure 2 This is a flowchart of an optical signal in an electronic device provided in one embodiment of the present invention;

[0026] Figure 3 This is a flowchart of an information processing method provided in one embodiment of the present invention. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0029] As described in the background section, existing fingerprint recognition methods for electronic devices are easily affected by oil or sweat, which affects the accuracy of fingerprint recognition. Furthermore, they require a certain amount of screen space on the electronic device, making them unsuitable for the trend of full-screen electronic devices.

[0030] In view of this, embodiments of the present invention provide an electronic device, such as... Figure 1 As shown, the electronic device includes a display panel 100 and a fingerprint recognition module disposed on the display surface of the display panel 100. The fingerprint recognition module includes an infrared emitter 10, an infrared receiver 20, and an optical film 30. The optical film 30 is used to reflect the infrared light emitted by the infrared emitter 10 toward it toward the fingerprint recognition area 40 on the surface of the fingerprint recognition module, and to reflect the infrared light reflected back from the fingerprint recognition area 40 toward the infrared receiver 20, so as to perform fingerprint recognition based on the infrared light signal received by the infrared receiver 20.

[0031] Since human fingerprints have concave and convex areas, when the infrared light emitted by the infrared emitter 10 is directed towards the fingerprint recognition area 40 of the fingerprint recognition module, if there is no fingerprint contact in the fingerprint recognition area 40, the brightness of the infrared light image reflected by the fingerprint recognition area 40 is relatively uniform. If there is fingerprint contact in the fingerprint recognition area 40, the infrared light image reflected by the fingerprint recognition area 40 will have alternating bright and dark stripes. Furthermore, the position and spacing of the alternating bright and dark stripes in the infrared light image reflected by the fingerprint recognition area 40 are different, and the corresponding fingerprints are also different. Therefore, the electronic device provided in this embodiment of the invention can perform fingerprint recognition based on the infrared light reflected back from the fingerprint recognition area 40 received by the infrared receiver 20.

[0032] Furthermore, in the electronic device provided by the embodiments of the present invention, the fingerprint recognition module uses infrared light for fingerprint recognition, which is not affected by oil or sweat stains, and the fingerprint recognition accuracy is high. Moreover, the infrared light is invisible to the human eye and will not affect the display light of the display panel 100.

[0033] It should be noted that, in this embodiment of the invention, in order to facilitate the infrared light signal emitted by the infrared transmitter 10 to be directed to the fingerprint recognition area 40 and the infrared receiver 20 to receive the infrared light signal reflected back from the fingerprint recognition area 40, and to avoid the display panel 100 affecting the transmission of each infrared light in the fingerprint recognition module, thereby improving the fingerprint recognition accuracy of the fingerprint recognition module, the fingerprint recognition module is located on the display panel 100 of the display panel 100.

[0034] It should also be noted that, since the fingerprint recognition module is located on the display surface of the display panel 100, in order not to affect the normal display of the display panel 100 and the user's normal viewing, in this embodiment of the invention, the optical film 30 is also used to transmit visible light emitted from the display panel 100 toward the optical film 30, so that the user can view the display image of the display panel 100 from the side of the fingerprint recognition module that is away from the display panel 100.

[0035] As can be seen from the above, in the electronic device provided by the embodiments of the present invention, the fingerprint recognition module is disposed on the display surface of the display panel 100, and the effective fingerprint recognition area (i.e., the area where fingerprint recognition can be performed) is relatively large, which can be extended to nearly half or more of the display surface of the display panel 100, and does not affect the viewing of the display image of the display panel 100. Therefore, in the electronic device provided by the embodiments of the present invention, the fingerprint recognition module does not affect the display area of ​​the electronic device, does not require additional openings, and does not occupy screen space, which is suitable for the development trend of full-screen electronic devices.

[0036] Based on the above embodiments, in one embodiment of the present invention, the infrared emitter 10, the infrared receiver 20, and the optical film 30 are disposed within the housing 50 of the fingerprint recognition module, and the plane where the optical film 30 is located forms a preset angle with the display surface of the display panel 100, dividing the housing 50 into a first space 51 facing the display panel 100 and a second space 52 away from the display panel 100; wherein the preset angle is greater than 0° and less than 180°, so that the optical film 30 can reflect the infrared light emitted by the infrared emitter 10 toward it toward the fingerprint recognition area 40 on the surface of the fingerprint recognition module, and reflect the infrared light reflected back from the fingerprint recognition area 40 toward the infrared receiver 20.

[0037] Based on the above embodiments, in one embodiment of the present invention, the infrared light emitted by the infrared emitter 10 is reflected by the optical film 30 and then directed perpendicularly to the fingerprint recognition area 40, so as to reduce the field of view of the infrared light received by the infrared receiver (e.g., to make the field of view of the infrared light received by the infrared receiver zero), thereby improving the imaging quality of the infrared light received by the infrared receiver.

[0038] Based on any of the above embodiments, in one embodiment of the present invention, the wavelength range of the infrared light emitted by the infrared emitter 10 is 820nm-1000nm, including the endpoints. However, the present invention does not limit this range and it depends on the specific circumstances. It should be noted that since the reflection angles of infrared light of different wavelengths are different, the final imaging effect is also different. Therefore, in this embodiment of the present invention, the narrower the wavelength range of the infrared light emitted by the infrared emitter 10, the clearer the image corresponding to the infrared light received by the infrared receiver 20, the sharper the image edges, and the higher the recognition accuracy of the fingerprint recognition module.

[0039] Based on any of the above embodiments, in one embodiment of the present invention, the attenuation coefficient of the infrared light emitted by the infrared emitter 10 on the side of the fingerprint recognition area 40 away from the display panel 100 is greater than the attenuation coefficient of the infrared light emitted by the infrared emitter 10 on the side of the fingerprint recognition area 40 facing the display panel 100. This ensures that the infrared light energy emitted by the infrared emitter 10 is concentrated on the side of the fingerprint recognition area 40 facing the display panel 100, while attenuating rapidly on the side of the fingerprint recognition area 40 away from the display panel 100. This avoids the infrared light energy emitted by the infrared emitter 10 being reflected by an object located on the side of the fingerprint recognition area 40 away from the display panel 100 and then received by the infrared receiver 20, thus preventing detection errors and saving power consumption of the electronic device.

[0040] Based on any of the above embodiments, in one embodiment of the present invention, the infrared emitter 10 includes a plurality of infrared LEDs, which are arranged in a first preset manner to form a uniform surface light source while increasing the infrared light energy emitted by the infrared emitter; the infrared receiver 20 includes a plurality of infrared detectors, which are arranged in a second preset manner to receive as much infrared light as possible reflected by the optical film after the fingerprint recognition area is directed toward the optical film, but the present invention does not limit this, and it depends on the specific situation.

[0041] Based on any of the above embodiments, in one embodiment of the present invention, the electronic device further includes: a processor, the processor being configured to generate an identification image based on infrared light received by the infrared receiver 20, and to perform fingerprint identification based on the identification image and a pre-stored comparison image. Specifically, when the identification image matches the pre-stored comparison image, the fingerprint corresponding to the identification image is a valid fingerprint; when the identification image does not match the pre-stored comparison image, the fingerprint corresponding to the identification image is an invalid fingerprint.

[0042] Based on the above embodiments, in one embodiment of the present invention, the identification image is a fingerprint image generated based on infrared light received by the infrared receiver 20, and the comparison image is a fingerprint image obtained in advance. In another embodiment of the present invention, the identification image is a fingerprint feature image generated based on infrared light received by the infrared receiver 20, and the comparison image is a pre-stored fingerprint feature image. The present invention does not limit this. In other embodiments of the present invention, the identification image can also be other images, as long as the identification image and the comparison image are of the same type, so as to facilitate the comparison between the identification image and the comparison image.

[0043] Accordingly, embodiments of the present invention also provide an information processing method applied to electronic devices, such as... Figure 1 As shown, the electronic device includes: a display panel 100 and a fingerprint recognition module disposed on the display surface of the display panel; wherein, the fingerprint recognition module includes: an infrared emitter 10, an infrared receiver 20, and an optical film 30; as shown Figure 2 As shown, the method includes:

[0044] S1: Control the infrared emitter 10 to emit infrared light toward the optical film 30. The optical film 30 reflects the infrared light emitted by the infrared emitter 10 toward the fingerprint recognition area 40 on the surface of the fingerprint recognition module, and reflects the infrared light reflected back from the fingerprint recognition area 40 toward the infrared receiver 20, while transmitting visible light emitted by the display panel 100 toward the optical film.

[0045] S2: Control the infrared receiver 20 to receive the infrared light reflected back from the fingerprint recognition area 40 that is directed at it by the optical film 30.

[0046] Based on the above embodiments, in one embodiment of the present invention, the infrared emitter 10, the infrared receiver 20, and the optical film 30 are disposed within the housing 50 of the fingerprint recognition module, and the plane where the optical film 30 is located forms a preset angle with the display surface of the display panel 100, dividing the housing 50 into a first space 51 facing the display panel 100 and a second space 52 away from the display panel 100; wherein the preset angle is greater than 0° and less than 180°, so that the optical film 30 can reflect the infrared light emitted by the infrared emitter 10 toward it toward the fingerprint recognition area 40 on the surface of the fingerprint recognition module, and reflect the infrared light reflected back from the fingerprint recognition area 40 toward the infrared receiver 20.

[0047] Based on the above embodiments, in one embodiment of the present invention, the infrared light emitted by the infrared emitter 10 is reflected by the optical film 30 and then directed perpendicularly to the fingerprint recognition area 40, so as to reduce the field of view of the infrared light received by the infrared receiver (e.g., to make the field of view of the infrared light received by the infrared receiver zero), thereby improving the imaging quality of the infrared light received by the infrared receiver.

[0048] Based on any of the above embodiments, in one embodiment of the present invention, the wavelength range of the infrared light emitted by the infrared emitter 10 is 820nm-1000nm, including the endpoints. However, the present invention does not limit this range and it depends on the specific circumstances. It should be noted that since the reflection angles of infrared light of different wavelengths are different, the final imaging effect is also different. Therefore, in this embodiment of the present invention, the narrower the wavelength range of the infrared light emitted by the infrared emitter 10, the clearer the image corresponding to the infrared light received by the infrared receiver 20, the sharper the image edges, and the higher the recognition accuracy of the fingerprint recognition module.

[0049] Based on the above embodiments, in one embodiment of the present invention, the method further includes, before controlling the infrared emitter to emit infrared light toward the optical film:

[0050] The frequency and divergence angle of the infrared light emitted by the infrared emitter 10 are adjusted so that the attenuation coefficient of the infrared light energy emitted by the infrared emitter 10 on the side of the fingerprint recognition area 40 away from the display panel 100 is greater than the attenuation coefficient of the infrared light energy emitted by the infrared emitter 10 on the side of the fingerprint recognition area 40 facing the display panel 100. This concentrates the infrared light energy emitted by the infrared emitter 10 on the side of the fingerprint recognition area 40 facing the display panel 100, while rapidly attenuating on the side of the fingerprint recognition area 40 away from the display panel 100. This avoids the infrared light energy emitted by the infrared emitter 10 being reflected by objects located on the side of the fingerprint recognition area 40 away from the display panel 100 and then received by the infrared receiver 20, thus preventing detection errors and saving power consumption of the electronic device.

[0051] Based on any of the above embodiments, in one embodiment of the present invention, the infrared emitter 10 includes a plurality of infrared LEDs, which are arranged in a first preset manner to form a uniform surface light source while increasing the infrared light energy emitted by the infrared emitter; the infrared receiver 20 includes a plurality of infrared detectors, which are arranged in a second preset manner to receive as much infrared light as possible reflected by the optical film after the fingerprint recognition area is directed toward the optical film, but the present invention does not limit this, and it depends on the specific situation.

[0052] S3: Based on the infrared light received by the infrared receiver 20, a recognition image is generated, and fingerprint recognition is performed based on the recognition image and a pre-stored comparison image. Specifically, when the recognition image matches the pre-stored comparison image, the fingerprint corresponding to the recognition image is a valid fingerprint; when the recognition image does not match the pre-stored comparison image, the fingerprint corresponding to the recognition image is an invalid fingerprint.

[0053] Based on the above embodiments, in one embodiment of the present invention, the identification image is a fingerprint image generated based on infrared light received by the infrared receiver 20, and the comparison image is a fingerprint image obtained in advance. In another embodiment of the present invention, the identification image is a fingerprint feature image generated based on infrared light received by the infrared receiver 20, and the comparison image is a pre-stored fingerprint feature image. The present invention does not limit this. In other embodiments of the present invention, the identification image can also be other images, as long as the identification image and the comparison image are of the same type, so as to facilitate the comparison between the identification image and the comparison image.

[0054] Because human fingerprints have raised and recessed areas, when the infrared light emitted by the infrared emitter 10 is directed towards the fingerprint recognition area 40 of the fingerprint recognition module, if there is no fingerprint contact in the fingerprint recognition area 40, the brightness of the reflected infrared light image is relatively uniform. If there is fingerprint contact in the fingerprint recognition area 40, the reflected infrared light image will have alternating bright and dark stripes. Furthermore, the position and spacing of these alternating bright and dark stripes in the reflected infrared light image correspond to different fingerprints. Therefore, the information processing method provided in this embodiment can perform fingerprint recognition based on the infrared light reflected back from the fingerprint recognition area 40 received by the infrared receiver 20. Moreover, in the information processing method provided in this embodiment, the fingerprint recognition module uses infrared light for fingerprint recognition, which is unaffected by oil or sweat, resulting in high fingerprint recognition accuracy. Additionally, infrared light is invisible to the human eye and will not affect the display light of the display panel 100.

[0055] Furthermore, in the electronic device to which the information processing method provided in this embodiment of the invention is applied, the fingerprint recognition module is disposed on the display surface of the display panel 100, and the effective fingerprint recognition area (i.e. the area where fingerprint recognition can be performed) is relatively large, which can be extended to nearly half or more of the display surface of the display panel 100, without affecting the viewing of the display image of the display panel 100, without requiring additional openings, occupying screen space, and is suitable for the development trend of full-screen electronic devices.

[0056] The various sections in this manual are described in a progressive manner, with each section focusing on the differences from the others. Similar or identical parts can be referred to each other.

[0057] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An electronic device, characterized in that, include: A display panel and a fingerprint recognition module disposed on the display surface of the display panel; wherein, the fingerprint recognition module includes: an infrared emitter, an infrared receiver, and an optical film; The optical film is used to reflect infrared light emitted from the infrared emitter toward the fingerprint recognition module surface to the fingerprint recognition area, and to reflect infrared light reflected back from the fingerprint recognition area toward the infrared receiver; the fingerprint recognition area covers at least a portion of the display area of ​​the display panel, and the optical film is also used to transmit visible light emitted from the display panel toward the optical film.

2. The electronic device according to claim 1, characterized in that, The infrared transmitter, the infrared receiver, and the optical film are disposed inside the housing of the fingerprint recognition module, and the plane where the optical film is located forms a preset angle with the display surface of the display panel, dividing the housing into a first space facing the display panel and a second space away from the display panel; Wherein, the preset angle is greater than 0° and less than 180°; the infrared transmitter and the infrared receiver are located in the second space.

3. The electronic device according to claim 2, characterized in that, The infrared light emitted by the infrared emitter is reflected by the optical film and then directed vertically toward the fingerprint recognition area.

4. The electronic device according to claim 2, characterized in that, The infrared emitter emits infrared light with a wavelength range of 820nm-1000nm, including the endpoint values.

5. The electronic device according to claim 2, characterized in that, The attenuation coefficient of the infrared light emitted by the infrared emitter on the side of the fingerprint recognition area away from the display panel is greater than the attenuation coefficient of the infrared light emitted by the infrared emitter on the side of the fingerprint recognition area facing the display panel.

6. The electronic device according to claim 1, characterized in that, The infrared transmitter includes multiple infrared LEDs arranged in a first preset manner; the infrared receiver includes multiple infrared detectors arranged in a second preset manner.

7. The electronic device according to any one of claims 1-6, characterized in that, The electronic device further includes a processor, which is configured to generate an identification image based on infrared light received by the infrared receiver, and perform fingerprint recognition based on the identification image and a pre-stored comparison image.

8. The electronic device according to claim 7, characterized in that, The identification image is a fingerprint image generated based on infrared light received by the infrared receiver, and the comparison image is a pre-stored fingerprint image.

9. The electronic device according to claim 7, characterized in that, The identification image is a fingerprint feature image generated based on the infrared light received by the infrared receiver, and the comparison image is a pre-stored fingerprint feature image.

10. An information processing method applied to electronic devices, characterized in that, The electronic device includes a display panel and a fingerprint recognition module disposed on the display surface of the display panel; wherein, the fingerprint recognition module includes: an infrared emitter, an infrared receiver, and an optical film; The method includes: The infrared emitter is controlled to emit infrared light toward the optical film. The optical film reflects the infrared light emitted by the infrared emitter toward the fingerprint recognition area on the surface of the fingerprint recognition module, and reflects the infrared light reflected back from the fingerprint recognition area toward the infrared receiver. At the same time, visible light emitted by the display panel toward the optical film is transmitted. The fingerprint recognition area covers at least a portion of the display area of ​​the display panel. The infrared receiver is controlled to receive the infrared light reflected back from the fingerprint recognition area that is directed at it by the optical film; Based on the infrared light received by the infrared receiver, an identification image is generated, and fingerprint recognition is performed based on the identification image and a pre-stored comparison image.

Images