CN111382640A - Screen protection film and terminal - Google Patents
Screen protection film and terminal Download PDFInfo
- Publication number
- CN111382640A CN111382640A CN201811644615.2A CN201811644615A CN111382640A CN 111382640 A CN111382640 A CN 111382640A CN 201811644615 A CN201811644615 A CN 201811644615A CN 111382640 A CN111382640 A CN 111382640A
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- screen
- optical fiber
- fingerprint
- protection film
- terminal
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/12—Fingerprints or palmprints
- G06V40/13—Sensors therefor
- G06V40/1324—Sensors therefor by using geometrical optics, e.g. using prisms
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- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Human Computer Interaction (AREA)
- General Physics & Mathematics (AREA)
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- Theoretical Computer Science (AREA)
- Image Input (AREA)
Abstract
The disclosure relates to a screen protection film and a terminal. The screen protection film comprises an optical fiber group and a fingerprint area; the optical fiber group comprises a plurality of optical fibers, and the plurality of optical fibers are arranged along the thickness direction of the screen protection film; the optical fiber group is at least arranged in the fingerprint area; the optical fiber group comprises a plurality of optical fibers which are used for transmitting light rays on one side of the screen protective film to the other side of the screen protective film in a total reflection mode. In the technical scheme, adopt this screen protection film to cover the terminal screen, clear fingerprint image can be acquireed through the light of gathering a plurality of optical fiber propagation to the fingerprint identification module at terminal fingerprint identification area, and then fingerprint identification is carried out, the condition that clear fingerprint image can't be gathered to fingerprint identification module when the screen protection film is thick has been avoided, can improve the thickness of screen protection film as far as possible under the condition of guaranteeing the fingerprint identification success rate promptly, the protection dynamics of screen protection film to the terminal screen has also been improved, and then user experience has been improved.
Description
Technical Field
The disclosure relates to the technical field of terminals, in particular to a screen protection film and a terminal.
Background
In order to meet the requirement of the market on a large-size screen, more and more intelligent terminals adopt the under-screen fingerprint technology to improve the screen occupation ratio.
In the related art, because the fingerprint identification module is arranged below the screen, in order to ensure the definition of a fingerprint image collected by the fingerprint identification module, the light transmittance requirement on the protective film of the screen is higher, so that the thickness of the protective film used by the screen adopting the under-screen fingerprint technology in the related art is smaller, and the purpose of protecting the screen is difficult to achieve.
Disclosure of Invention
In order to overcome the problems in the related art, embodiments of the present disclosure provide a screen protection film and a terminal. The technical scheme is as follows:
according to a first aspect of embodiments of the present disclosure, there is provided a screen protective film including an optical fiber group and a fingerprint area;
the optical fiber group includes a plurality of optical fibers arranged in a thickness direction of the screen protective film; the fingerprint area corresponds to an under-screen fingerprint identification area of a terminal screen to be protected by the screen protection film; the optical fiber group is arranged at least in the fingerprint area;
the optical fiber group comprises a plurality of optical fibers which are used for transmitting the light rays on one side of the screen protective film to the other side of the screen protective film in a total reflection mode.
The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects: adopt this screen protection film to cover the terminal screen, when the user need carry out fingerprint identification, can place the fingerprint district at the screen protection film with the finger, a plurality of optical fiber that this fingerprint district set up can propagate the fingerprint of finger to the fingerprint identification area of this terminal screen through the total reflection mode. Because the attenuation of the total reflection mode to light energy is less, consequently this fingerprint identification module in fingerprint identification region can acquire clear fingerprint image through gathering the light that a plurality of optical fiber propagated, and then carry out fingerprint identification, avoided the condition that fingerprint identification module can't gather clear fingerprint image when the screen protection film is thick, can improve the thickness of screen protection film as far as possible under the condition of guaranteeing the fingerprint identification success rate promptly, also improved the protection dynamics of screen protection film to the terminal screen, and then improved user experience.
In one embodiment, the screen protection film further comprises a display area, wherein the display area corresponds to other areas of the terminal screen to be protected except the area for identifying the fingerprint under the screen;
the optical fiber group is also disposed in the display area.
In one embodiment, the optical fiber group includes a plurality of optical fibers arranged in an array.
In one embodiment, the optical fiber has a diameter in a range of greater than or equal to 5 microns and less than or equal to 50 microns.
In one embodiment, the optical fiber has a diameter to depth ratio greater than or equal to 1/10.
In one embodiment, the optical fiber is a glass optical fiber or a plastic optical fiber.
According to a second aspect of the embodiments of the present disclosure, a terminal is provided, where a screen of the terminal is covered with the screen protection film according to any one of the embodiments of the first aspect.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.
Fig. 1 is a sectional view of a screen protective film according to an exemplary embodiment.
FIG. 2 is a schematic diagram illustrating imaging of a single optical fiber according to an exemplary embodiment.
Fig. 3 is a cross-sectional view of a screen protective film according to an example embodiment.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.
The technical scheme provided by the embodiment of the disclosure relates to a terminal, which can be a mobile phone, a tablet personal computer and other devices provided with a screen and having a fingerprint identification function under the screen, and the embodiment of the disclosure does not limit the functions. In the related art, the thicker the protective film, the poorer the transmittance of light, so in order to ensure high light transmittance, the thickness of the protective film used by the screen needs to be limited so that the fingerprint recognition module disposed below the screen can acquire clear fingerprint images. However, if the thickness of the protective film is small, the purpose of protecting the screen cannot be achieved. In the technical scheme provided by the embodiment of the disclosure, the screen protection film is adopted to cover the terminal screen, when a user needs to perform fingerprint identification, a finger can be placed in the fingerprint area of the screen protection film, and the fingerprint of the finger can be transmitted to the fingerprint identification area of the terminal screen through a total reflection mode by a plurality of optical fibers arranged in the fingerprint area. Because the attenuation of the total reflection mode to light energy is less, consequently this fingerprint identification module in fingerprint identification region can acquire clear fingerprint image through gathering the light that a plurality of optical fiber propagated, and then carry out fingerprint identification, avoided the condition that fingerprint identification module can't gather clear fingerprint image when the screen protection film is thick, can improve the thickness of screen protection film as far as possible under the condition of guaranteeing the fingerprint identification success rate promptly, also improved the protection dynamics of screen protection film to the terminal screen, and then improved user experience.
The embodiment of the present disclosure provides a screen protection film 10, as shown in fig. 1, the screen protection film 10 includes an optical fiber group 101 and a fingerprint area 102. The optical fiber group 101 includes a plurality of optical fibers arranged in a thickness direction of the screen protective film 10, which may be referred to as an X direction in fig. 1; the fingerprint area 102 corresponds to an under-screen fingerprint identification area 201 of the terminal screen 20 to be protected; the set of optical fibers 101 is disposed at least in the fingerprint area 102.
The optical fiber group 101 includes a plurality of optical fibers for transmitting light from one side of the screen protection film 10 to the other side of the screen protection film 10 by total reflection.
Illustratively, the terminal screen 20 has an off-screen fingerprint identification function, that is, a fingerprint identification module 2011 is disposed below the off-screen fingerprint identification area 201 of the terminal screen 20. When the user needs to perform fingerprint recognition, the terminal may be first instructed to light the screen and then place a finger on the fingerprint recognition area 201 of the terminal screen 20. At this time, the light emitted from the terminal screen 20 illuminates the fingerprint of the finger placed on the screen, so that the fingerprint recognition module 2011 can collect a clear fingerprint image and perform fingerprint recognition. If the terminal screen 20 is covered with a protective film, the reflected light of the light emitted from the terminal screen 20 by the user's finger needs to be first propagated in the protective film before being collected by the fingerprint recognition module 2011. If the thickness of the protective film is large, the attenuation of the energy of the reflected light in the protective film may be large, and the energy of the light collected by the fingerprint recognition module 2011 is small, so that a clear fingerprint image cannot be formed. Meanwhile, the fingerprint identification module 2011 is generally a macro camera, and the depth of field of the macro camera is small, so that the object distance of the macro camera when the macro camera shoots the finger image becomes large under the condition that the protective film is thick, the depth of field requirement of the macro camera cannot be met, and a clear fingerprint image cannot be shot.
In the embodiment of the present disclosure, the optical fiber group 101 disposed in the fingerprint area 102 of the screen protection film 10 includes a plurality of optical fibers, which can transmit the light of one side of the screen protection film 10 to the other side of the screen protection film 10 by means of total reflection, as shown in fig. 2, since the attenuation of the light energy by means of total radiation is small, an object located on one side of the screen protection film 10 can form a clear real image on the other side. The screen protection film 10 is covered on the terminal screen 20, and when the user needs to perform fingerprint identification, the user can firstly instruct the terminal to light the screen and then place a finger on the fingerprint area 102 of the screen protection film 10. The light emitted from the terminal screen 20 is transmitted to the surface of the finger through the optical fiber group 101 disposed in the fingerprint area 102, and illuminates the fingerprint of the finger. The reflected light of the light by the fingerprint of the finger propagates to the side of the screen protection film 10 close to the terminal screen 20 by total reflection through the optical fiber group 101, and forms a clear real image of the finger on the side, which is the same as the fingerprint identification area 201 where the finger is directly placed on the terminal screen 20. The fingerprint recognition module 2011 disposed below the fingerprint recognition area 201 can acquire the fingerprint image of the finger by capturing the picture of the real image, and then perform fingerprint recognition.
For example, the optical fiber group 101 may include a plurality of optical fibers arranged in an array, i.e., arranged in rows and columns, respectively, to form an optical fiber array, so as to ensure that the fingerprint region 102 is covered by the optical fiber group 101. Thus, no matter where the user places a finger on the fingerprint area 102, fingerprint recognition can be performed.
Optionally, the optical fiber group 101 includes optical fibers having a diameter-to-depth ratio greater than or equal to 1/10. At an aspect ratio of 1/10 or more, the light propagating in the optical fiber can be totally reflected without causing attenuation of the light energy.
Alternatively, when the aspect ratio of the optical fiber is greater than or equal to 1/10, the diameter of the optical fiber may be in a range of greater than or equal to 5 micrometers and less than or equal to 50 micrometers. Preferably, the optical fiber may be 5 μm, and the smaller the diameter of the optical fiber, the better the display effect of the terminal screen 20 covered with the screen protective film 10.
By way of example, the optical fiber may be a glass optical fiber or a plastic optical fiber, which is not limited in the embodiments of the present disclosure.
In the technical solution provided by the embodiment of the present disclosure, the screen protection film 10 is used to cover the terminal screen 20, when a user needs to perform fingerprint identification, a finger can be placed in the fingerprint area 102 of the screen protection film 10, and the plurality of optical fibers arranged in the fingerprint area 102 can transmit the fingerprint of the finger to the fingerprint identification area 201 of the terminal screen 20 in a total reflection manner. Because the attenuation of total reflection mode to light is less, consequently clear fingerprint image can be acquireed through the light of gathering a plurality of optical fiber propagation to this fingerprint identification module 2011 of fingerprint identification region 201, and then carry out fingerprint identification, the condition that clear fingerprint image can't be gathered to fingerprint identification module 2011 when screen protection film 10 is thick has been avoided, can improve the thickness of screen protection film 10 as far as possible under the circumstances of guaranteeing the fingerprint identification success rate promptly, the protection dynamics of screen protection film 10 to terminal screen 20 has also been improved, and then user experience has been improved.
In one embodiment, as shown in fig. 3, the screen protection film 10 further includes a display area 103, and the display area 103 corresponds to other areas of the terminal screen 20 to be protected except for the area of the fingerprint recognition under the screen; the optical fiber group 101 is also disposed in the display area 103.
For example, since all areas of the terminal screen 20 can be displayed with images, if the optical fiber group 101 is disposed only in the fingerprint area 102 of the screen protection film 10 and not disposed in the display area 103, the display effect of the terminal screen 20 covered with the screen protection film 10 in the area corresponding to the fingerprint area 102 and the display area 103 may be inconsistent, which may affect the user experience. Therefore, the optical fiber group 101 can be disposed in the display area 103 of the terminal screen 20, i.e. the fingerprint area 102 and the display area 103 have the same structure, so that the display effect of the terminal screen 20 in the area corresponding to the fingerprint area 102 and the display area 103 can be uniform.
In the technical scheme provided by the embodiment of the disclosure, the screen protection film 10 is adopted to cover the terminal screen 20, the display area 103 and the fingerprint area 102 have the same structure, so that the uniformity of screen display effects is ensured and the user experience is improved under the condition of meeting the requirement of fingerprint identification.
The embodiment of the present disclosure provides a terminal, and a screen of the terminal may be covered with the screen protection film 10 described in any of the above embodiments.
The screen protective film 10 includes an optical fiber group 101 and a fingerprint area 102. The optical fiber group 101 includes a plurality of optical fibers arranged in the thickness direction of the screen protective film 10; the fingerprint area 102 corresponds to a sub-screen fingerprint identification area of the terminal screen 20 to be protected by the screen protection film 10; the set of optical fibers 101 is disposed at least in the fingerprint area 102.
The optical fiber group 101 includes a plurality of optical fibers that can transmit light from one side of the screen protection film 10 to the other side of the screen protection film 10 by total reflection.
Optionally, the screen protection film 10 further includes a display area 103, where the display area 103 corresponds to other areas of the terminal screen 20 to be protected except for the area of the fingerprint identification area under the screen; the optical fiber group 101 may also be disposed in the display area 103 to ensure the display effect of the terminal.
In the technical scheme provided by the embodiment of the disclosure, the screen protection film 10 is covered on the screen of the terminal, so that the screen protection film can play a role in protecting the screen. Meanwhile, when a user needs to perform fingerprint identification, a finger can be placed in the fingerprint area 102 of the screen protection film 10, and the plurality of optical fibers arranged in the fingerprint area 102 can transmit the fingerprint of the finger to the fingerprint identification area of the terminal screen 20 through total reflection. Because the total reflection mode is less to the decay of light energy, consequently this fingerprint identification module in fingerprint identification region can acquire clear fingerprint image through the light of gathering a plurality of optical fiber propagation, and then carries out fingerprint identification, has avoided fingerprint identification module can't gather the condition of clear fingerprint image when screen protection film 10 is thick, has improved user experience.
Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.
It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.
Claims (7)
1. A screen protective film characterized by comprising an optical fiber group and a fingerprint area;
the optical fiber group includes a plurality of optical fibers arranged in a thickness direction of the screen protective film; the fingerprint area corresponds to an under-screen fingerprint identification area of a terminal screen to be protected by the screen protection film; the optical fiber group is arranged at least in the fingerprint area;
the optical fiber group comprises a plurality of optical fibers which are used for transmitting the light rays on one side of the screen protective film to the other side of the screen protective film in a total reflection mode.
2. The screen protection film according to claim 1, further comprising a display area corresponding to other areas of the terminal screen to be protected except the area for identifying the fingerprint under the screen;
the optical fiber group is also disposed in the display area.
3. The screen protective film according to claim 1 or 2, wherein the optical fiber group includes a plurality of optical fibers arranged in an array.
4. The screen protective film according to claim 1 or 2, wherein the optical fiber has a diameter in a range of 5 micrometers or more and 50 micrometers or less.
5. The screen protective film according to claim 1 or 2, wherein a diameter-depth ratio of the optical fiber is greater than or equal to 1/10.
6. The screen protective film according to claim 1 or 2, wherein the optical fiber is a glass optical fiber or a plastic optical fiber.
7. A terminal, characterized in that the screen of the terminal is covered with the screen protection film of any one of claims 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811644615.2A CN111382640B (en) | 2018-12-29 | 2018-12-29 | Screen protection film and terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811644615.2A CN111382640B (en) | 2018-12-29 | 2018-12-29 | Screen protection film and terminal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111382640A true CN111382640A (en) | 2020-07-07 |
| CN111382640B CN111382640B (en) | 2023-09-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811644615.2A Active CN111382640B (en) | 2018-12-29 | 2018-12-29 | Screen protection film and terminal |
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| CN (1) | CN111382640B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111985391A (en) * | 2020-08-18 | 2020-11-24 | Oppo（重庆）智能科技有限公司 | Detection method and device of protective film, mobile terminal and storage medium |
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| TWI642175B (en) * | 2017-11-03 | 2018-11-21 | 新相光學股份有限公司 | Image sensor and manufacturing method of fingerprint identification device |
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| CN111985391A (en) * | 2020-08-18 | 2020-11-24 | Oppo（重庆）智能科技有限公司 | Detection method and device of protective film, mobile terminal and storage medium |
| CN111985391B (en) * | 2020-08-18 | 2023-11-28 | Oppo（重庆）智能科技有限公司 | Method and device for detecting protective film, mobile terminal and storage medium |
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| CN111382640B (en) | 2023-09-22 |
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