CN215416685U - Full-screen fingerprint identification device, display device and terminal - Google Patents
Full-screen fingerprint identification device, display device and terminal Download PDFInfo
- Publication number
- CN215416685U CN215416685U CN202120758850.3U CN202120758850U CN215416685U CN 215416685 U CN215416685 U CN 215416685U CN 202120758850 U CN202120758850 U CN 202120758850U CN 215416685 U CN215416685 U CN 215416685U
- Authority
- CN
- China
- Prior art keywords
- fingerprint
- light source
- fingerprint identification
- light
- full
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Image Input (AREA)
Abstract
The utility model discloses a full screen fingerprint identification device, a display device and a terminal, wherein the full screen fingerprint identification device comprises a controller, a fingerprint identification component and a fingerprint light source, wherein the fingerprint identification component and the fingerprint light source are connected with the controller; the fingerprint identification component is used for identifying a fingerprint area, receiving infrared detection light and forming fingerprint information; the controller is used for controlling the opening of the fingerprint light source in the fingerprint area and the closing of the fingerprint light source in the non-fingerprint area. The full-screen fingerprint identification device provided by the embodiment of the utility model changes the identification light source of the full-screen fingerprint into infrared light by adopting a direct type infrared LED mode, and separates the infrared light from the original display light source, and the fingerprint identification sensor only receives infrared light; in addition, when fingerprint identification is carried out, when the fingerprint touches the screen, only the infrared LED in the fingerprint area can be turned on, and the infrared LED at the periphery can be turned off.
Description
Technical Field
The utility model relates to the technical field of fingerprint identification, in particular to a full-screen fingerprint identification device, a display device and a terminal.
Background
The popularization of the mobile phone with the full screen brings convenience to work and life of people, and changes the habit of using the mobile phone in the past; this is the most significant affiliated screen unlocking scheme. Because the screen fingerprint technology can ensure the complete appearance of the mobile phone body and the dual effects of user experience, the mobile phone manufacturer pays more attention to the technology.
The mobile phone fingerprint identification technology is a very convenient unlocking function for the modern society; the fingerprint identification technology is a biological identification technology, and the fingerprint identification system is a set of pattern identification system comprising fingerprint image acquisition, processing, feature extraction and comparison modules. The method is commonly used in places needing personnel identity confirmation, such as an access control system, an attendance system, a notebook computer, bank internal processing, bank payment and the like.
At the present stage, the fingerprint identification is an operation mode of a single finger, namely a single fingerprint acquisition identifier. The single fingerprint collection identifier only has one area for identifying fingerprints, and can only collect the fingerprints of one finger at a time, and in order to increase the reliability, more fingerprints need to be registered and more fingers need to be identified.
Because a plurality of fingerprints of a person need to be collected, the person needs to press on one fingerprint collection identifier for many times, and the efficiency is low. Because only one fingerprint is acquired at a time, the false rejection rate and the false recognition rate of the identification existing in the fingerprint identification are high, and the identification accuracy is not ideal.
In addition, in the current stage, a scheme of adding a backlight module on the whole screen with a sensor is mostly adopted, and the fingerprint part is operated by taking white light in the original backlight as an identification light source; the fingerprint identification method is easily influenced by ambient light, multiple fingerprints are processed simultaneously, signal interference is high, and the success rate of fingerprint identification is easily reduced.
SUMMERY OF THE UTILITY MODEL
In view of the above-mentioned defects or shortcomings in the prior art, it is desirable to provide a full-screen fingerprint identification device, a display device and a terminal, which can realize full-screen fingerprint identification and improve fingerprint identification precision.
In a first aspect, the application provides a full screen fingerprint identification device, which includes a controller, a fingerprint identification component connected to the controller, and a fingerprint light source, wherein the fingerprint light source is configured to emit infrared detection light to a fingerprint area; the fingerprint identification component is used for identifying a fingerprint area, receiving infrared detection light and forming fingerprint information; the controller is used for controlling the opening of the fingerprint light source in the fingerprint area and the closing of the fingerprint light source in the non-fingerprint area.
Further, the fingerprint light source comprises a plurality of infrared LED light sources which are connected in parallel.
Further, the fingerprint identification assembly comprises at least one fingerprint identification sensor for receiving and/or emitting a fingerprint optical signal, the fingerprint optical signal being infrared detection light.
Further, the fingerprint identification component also comprises at least one touch sensor for identifying the fingerprint area.
In a second aspect, the application provides a display device, including glass apron, LCD liquid crystal display panel and the backlight unit that sets gradually from top to bottom, still include as above arbitrary full-screen fingerprint identification device.
Further, the fingerprint identification assembly is arranged below the glass cover plate or below the LCD liquid crystal panel.
Furthermore, the backlight module comprises a brightness enhancement film, a diffusion film, a light guide plate and a reflection film which are sequentially arranged from top to bottom.
Furthermore, the backlight module comprises a display light source which is a side light source.
Further, the fingerprint light source sets up the below of backlight unit.
In a third aspect, the present application provides a terminal, where the full screen fingerprint identification apparatus is set as any one of the above.
The technical scheme provided by the embodiment of the utility model can have the following beneficial effects:
the full-screen fingerprint identification device provided by the embodiment of the utility model changes the identification light source of the full-screen fingerprint into infrared light by adopting a direct type infrared LED mode, and separates the infrared light from the original display light source, and the fingerprint identification sensor only receives infrared light; in addition, when fingerprint identification is carried out, when the fingerprint touches the screen, only the infrared LED in the fingerprint area can be turned on, and the infrared LED at the periphery can be turned off.
The white light and the infrared light in the full-screen fingerprint identification device provided by the embodiment of the utility model cannot interfere with each other, the feedback light collected by the fingerprint identification sensor is greatly purified, the noise influence possibly caused by light leakage is reduced, and the success rate of fingerprint judgment can be greatly improved.
Drawings
Other features, objects and advantages of the utility model will become more apparent upon reading of the detailed description of non-limiting embodiments made with reference to the following drawings:
FIG. 1 is a diagram illustrating a structure of a full screen fingerprint in the prior art;
FIG. 2 is a schematic diagram of light transmission during full screen fingerprint identification in the prior art;
FIG. 3 is a block diagram of a full-screen fingerprint identification apparatus according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a display module according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of light transmission during a full-screen fingerprint identification process according to an embodiment of the present invention;
fig. 6 is a schematic diagram of a fingerprint light source according to an embodiment of the present invention.
1. A controller; 2. a fingerprint identification component; 3. a fingerprint light source; 4. an infrared LED light source; 5. A fingerprint recognition sensor; 6. a touch sensor; 7. an LCD liquid crystal panel; 8. a backlight module; 9. a brightness enhancement film; 10. a diffusion sheet; 11. a light guide plate; 12. a reflective sheet; 13. a light source is displayed.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not restrictive of the utility model. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings.
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
Fig. 1-2 are schematic diagrams of a full-Screen fingerprint (Finger Print Screen) of an LCD, fig. 1 shows a general case where a part of a display light source is output by a backlight device, and when fingerprint identification is required, the actuating mechanism still uses white light in the backlight as an identification light source. As shown in fig. 2, after the light passes through the Panel and hits the fingerprint, the reflected light hits the sensor in the Panel again, and a cycle of fingerprint identification is completed; however, the identification light source is a whole display light source, and is easily affected by light around the non-fingerprint area, even if the pixels around the fingerprint are closed, only the pixels of the fingerprint part are opened to allow light to transmit, but because the backlight is in a long and bright shape, micro-leakage light can still penetrate through the screen, and the success rate of fingerprint judgment is reduced.
Please refer to fig. 3-5 in detail, the present application provides a full screen fingerprint identification apparatus, which includes a controller 1, a fingerprint identification component 2 connected to the controller 1, and a fingerprint light source 3, wherein the fingerprint light source 3 is configured to emit infrared detection light to a fingerprint area; the fingerprint identification component 2 is used for identifying a fingerprint area, receiving infrared detection light and forming fingerprint information; the controller 1 is used for controlling the opening of the fingerprint light source 3 in the fingerprint area and closing the fingerprint light source 3 in the non-fingerprint area.
It should be noted that, in this embodiment of the present application, the controller is configured to control turning on or off of the fingerprint light sources in the fingerprint area and the non-fingerprint area, and in different embodiments, the controller may be configured to control turning on or off of all light sources in the fingerprint area, may be configured to control a fingerprint light source in a local fingerprint area in the fingerprint area, and similarly, may be configured to control turning on or off of all light sources in the non-fingerprint area, and may be configured to control turning on or off of a fingerprint light source in a local non-fingerprint area. The number of fingerprint light sources controlled by the controller is not limited by the embodiment of the application.
Further, the fingerprint light source 3 comprises a plurality of infrared LED light sources 4 connected in parallel.
Further, the fingerprint identification assembly 2 comprises at least one fingerprint identification sensor 5 for receiving and/or emitting a fingerprint optical signal, which is infrared detection light.
Further, the fingerprint identification assembly 2 further comprises at least one touch sensor 6 for identifying a fingerprint area.
When the fingerprint identification device is used specifically, the area of the fingerprint touch screen is identified through the touch sensor 6 in the fingerprint identification component 2, the information is transmitted to the controller 1, the controller 1 controls the infrared LED light sources 4 corresponding to the corresponding areas in the fingerprint light sources 3 to be turned on, the infrared LED light sources 4 outside the corresponding areas are in a turned-off state, and the infrared LED light sources 4 emit infrared detection light to the fingerprint area; the infrared light penetrates through the display panel and hits the fingerprint, the reflected infrared light hits the panel again, and reaches the fingerprint identification sensor 5, and fingerprint identification is completed.
In addition, as shown in fig. 6, if the identified fingerprint area is an area i and the infrared LED light sources 4 related thereto are a, b, c, d, the controller 1 turns on the corresponding infrared LED light sources 4. If the fingerprint district that discerns is II districts, when specifically setting up to open, because it has surpassed the inside four infrared LED light source 4's in this district scope, for effective discernment fingerprint edge, can set up the turn-on range of infrared LED light source 4 lamp to III districts. Of course, the range setting may be set according to different application environments, such as a night mode or a day mode.
Examples
The application provides a display device, including glass apron, LCD liquid crystal display panel 7 and the backlight unit 8 that sets gradually from top to bottom, still include full-screen fingerprint identification device, wherein, full-screen fingerprint identification device include controller 1 and with fingerprint identification subassembly 2, fingerprint light source 3 that controller 1 connects.
Fingerprint light source 3 includes a plurality of infrared LED light sources 4 of mutual parallel connection, fingerprint light source 3 sets up backlight unit 8's below. The infrared light source may be an infrared LED4 light source, an infrared Vertical Cavity Surface Emitting Laser (VCSEL), or an infrared Laser Diode (Laser Diode).
The fingerprint identification component 2 is arranged below the glass cover plate or below the LCD liquid crystal panel 7. The fingerprint recognition assembly 2 comprises at least one fingerprint recognition sensor 5 and at least one touch sensor 6.
Note that the fingerprint recognition device 2 is disposed on a carrier substrate including a polymer dispersed liquid crystal film, which is in a transparent state when energized. For example, when the liquid crystal molecules in the polymer dispersed liquid crystal film are electrified, the liquid crystal molecules are in a vertically arranged array state under the action of an electric field, so that light can pass through the bearing substrate nearly without loss; in the non-energized state, the liquid crystal molecules in the polymer-dispersed liquid crystal film take on an array state of a tilt arrangement.
Carry the infrared signal of fingerprint information in this embodiment and effectively pierce through glass apron and direct fingerprint identification subassembly 2 to avoid backlight unit 8 to infrared signal's loss and interference, and then guaranteed that fingerprint information is gathered effectively by the fingerprint identification sensor 5 accuracy on the fingerprint identification subassembly 2.
The backlight module 8 includes a brightness enhancement film 9, a diffusion film 10, a light guide plate 11, and a reflection film 12 sequentially disposed from top to bottom. The backlight module 8 comprises a display light source 13, and the display light source 13 is a side light source.
When the fingerprint identification device is used specifically, the area of the fingerprint touch screen is identified through the touch sensor 6 in the fingerprint identification component 2, the information is transmitted to the controller 1, the controller 1 controls the infrared LED light sources 4 corresponding to the corresponding areas in the fingerprint light sources 3 to be turned on, the infrared LED light sources 4 outside the corresponding areas are in a turned-off state, and the infrared LED light sources 4 emit infrared detection light to the fingerprint area, such as the area A in fig. 5; the infrared light penetrates through the display panel and hits the fingerprint, the reflected infrared light hits the panel again, and reaches the fingerprint identification sensor 5, and fingerprint identification is completed.
It should be noted that the full screen fingerprint identification device can identify a fingerprint at any position of the full screen, and can also identify a plurality of fingerprints simultaneously.
On the other hand, the application provides a terminal, wherein the full-screen fingerprint identification device is arranged on the terminal.
Liquid Crystal Display (LCD) devices have many advantages such as thin body, power saving, and no radiation, and are widely used. Such as: liquid crystal televisions, mobile phones, Personal Digital Assistants (PDAs), digital cameras, computer screens, notebook computer screens, or the like. The terminal may be a liquid crystal television, a mobile phone, a Personal Digital Assistant (PDA), a digital camera, a computer, or a notebook computer. The terminal is often used in places needing personnel identity confirmation, such as an access control system, an attendance system, a notebook computer, bank internal processing, bank payment and the like.
The full-screen fingerprint identification device provided by the embodiment of the utility model changes the identification light source of the full-screen fingerprint into infrared light by adopting a direct type infrared LED mode, and separates the infrared light from the original display light source, and the fingerprint identification sensor only receives infrared light; in addition, when fingerprint identification is carried out, when the fingerprint touches the screen, only the infrared LED in the fingerprint area can be turned on, and the infrared LED at the periphery can be turned off.
The white light and the infrared light in the full-screen fingerprint identification device provided by the embodiment of the utility model cannot interfere with each other, the feedback light collected by the fingerprint identification sensor is greatly purified, the noise influence possibly caused by light leakage is reduced, and the success rate of fingerprint judgment can be greatly improved.
It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, as used herein, refer to an orientation or positional relationship indicated in the drawings that is solely for the purpose of facilitating the description and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and is therefore not to be construed as limiting the utility model.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
Unless defined otherwise, technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. Terms such as "disposed" and the like, as used herein, may refer to one element being directly attached to another element or one element being attached to another element through intervening elements. Features described herein in one embodiment may be applied to another embodiment, either alone or in combination with other features, unless the feature is otherwise inapplicable or otherwise stated in the other embodiment.
The present invention has been described in terms of the above embodiments, but it should be understood that the above embodiments are for purposes of illustration and description only and are not intended to limit the utility model to the scope of the described embodiments. It will be appreciated by those skilled in the art that many variations and modifications may be made to the teachings of the utility model, which fall within the scope of the utility model as claimed.
Claims (10)
1. A full screen fingerprint identification device is characterized in that the device comprises a controller, a fingerprint identification component and a fingerprint light source, wherein the fingerprint identification component and the fingerprint light source are connected with the controller,
the fingerprint light source is used for emitting infrared detection light to the fingerprint area;
the fingerprint identification component is used for identifying a fingerprint area, receiving infrared detection light and forming fingerprint information;
the controller is used for controlling the opening of the fingerprint light source in the fingerprint area and the closing of the fingerprint light source in the non-fingerprint area.
2. Full screen fingerprint recognition device according to claim 1, wherein the fingerprint light source comprises several infrared LED light sources connected in parallel to each other.
3. Full screen fingerprint recognition device according to claim 1, wherein the fingerprint recognition component comprises at least one fingerprint recognition sensor to receive and/or emit a fingerprint optical signal, the fingerprint optical signal being infrared detected light.
4. Full screen fingerprinting device according to claim 3, characterized in that the fingerprinting component further comprises at least one touch sensor for identifying a fingerprint area.
5. A display device comprises a glass cover plate, an LCD liquid crystal panel and a backlight module which are sequentially arranged from top to bottom, and is characterized by further comprising the full-screen fingerprint identification device as claimed in any one of claims 1 to 4.
6. The display device according to claim 5, wherein the fingerprint recognition assembly is disposed under a glass cover plate or under an LCD liquid crystal panel.
7. The display device as claimed in claim 5, wherein the backlight module comprises a brightness enhancement film, a diffusion film, a light guide plate and a reflection film sequentially arranged from top to bottom.
8. The display device according to claim 5, wherein the backlight module comprises a display light source, and the display light source is a side light source.
9. The display device according to claim 5, wherein the fingerprint light source is disposed below the backlight module.
10. A terminal, characterized in that it is provided with a full screen fingerprinting device according to any one of claims 1-4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120758850.3U CN215416685U (en) | 2021-04-14 | 2021-04-14 | Full-screen fingerprint identification device, display device and terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120758850.3U CN215416685U (en) | 2021-04-14 | 2021-04-14 | Full-screen fingerprint identification device, display device and terminal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215416685U true CN215416685U (en) | 2022-01-04 |
Family
ID=79671319
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120758850.3U Active CN215416685U (en) | 2021-04-14 | 2021-04-14 | Full-screen fingerprint identification device, display device and terminal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215416685U (en) |
-
2021
- 2021-04-14 CN CN202120758850.3U patent/CN215416685U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107748874B (en) | Full-screen fingerprint identification OLED module, fingerprint identification method and display device | |
| CN109496314B (en) | Fingerprint recognition device and electronic equipment under screen | |
| US11132526B2 (en) | Fingerprint recognition panel, fingerprint recognition method and display device | |
| CN109716352B (en) | Liquid crystal display fingerprint module, under-screen fingerprint identification system and electronic equipment | |
| CN107832752B (en) | Fingerprint identification panel, full-screen fingerprint identification method and display device | |
| CN107958193B (en) | Display module and electronic equipment | |
| CN109031782B (en) | Display screen assembly, electronic equipment and control method of electronic equipment | |
| WO2020077506A1 (en) | Fingerprint recognition method and apparatus and terminal device with fingerprint recognition function | |
| WO2020077498A1 (en) | Light emitting device, biometric feature detection device, and electronic apparatus | |
| CN109190592B (en) | LCD display device and electronic equipment | |
| CN107958185B (en) | Biological characteristic information sensing method of display module | |
| CN208969685U (en) | Shield lower fingerprint identification device and electronic equipment | |
| CN106372587A (en) | Fingerprint identification method and device | |
| CN109445160A (en) | Display module and display device | |
| CN106599768A (en) | Optical device | |
| US11810395B2 (en) | Optical fingerprint identification apparatus, electronic device and fingerprint identification method | |
| EP3176728B1 (en) | Liquid crystal display assembly and electronic device | |
| CN106775538A (en) | Electronic equipment and biometric discrimination method | |
| CN109992154A (en) | Touch screen and fingerprint identification method with comprehensive screen fingerprint identification function | |
| CN109325384A (en) | Cell type optical identification of fingerprint shows equipment | |
| CN110472620A (en) | Sensing device under a kind of screen | |
| CN109409249A (en) | Information processing method and electronic equipment | |
| CN110110701B (en) | Fingerprint identification module | |
| CN215416685U (en) | Full-screen fingerprint identification device, display device and terminal | |
| CN211319236U (en) | Fingerprint detection device, backlight unit, display screen and electronic equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |